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CN103516433B - A kind of photoelectricity optical repeater, length are away from box and the processing method to upper and lower traveling optical signal - Google Patents

A kind of photoelectricity optical repeater, length are away from box and the processing method to upper and lower traveling optical signal Download PDF

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CN103516433B
CN103516433B CN201210213118.3A CN201210213118A CN103516433B CN 103516433 B CN103516433 B CN 103516433B CN 201210213118 A CN201210213118 A CN 201210213118A CN 103516433 B CN103516433 B CN 103516433B
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optical signal
signal
olt
uplink
photoelectricity
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CN103516433A (en
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张锡芳
付志明
徐继东
刘欣
张德智
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Xuzhou Nuclear Run Light Energy Co., Ltd.
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ZTE Corp
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Abstract

The invention discloses a kind of photoelectricity optical repeater, length away from box and the processing method to upper and lower traveling optical signal, main contents include：The photoelectricity optical repeater in box long carries out reshaping to upper and lower traveling optical signal and amplifies again respectively, and downlink optical signal after reshaping is amplified again export to grow in box 1：N couplers, 1：The downlink optical signal that N couplers will be received is divided into N roads downlink optical signal and exports to coupled optical splitter, and the uplink optical signal of each optical splitter is combined into all the way.On the one hand, grow photoelectricity optical repeater in box carries out reshaping to uplink and downlink signals and amplifies again respectively, and downlink optical signal after reshaping is amplified again is exported, and extends the transmission range of optical signal；On the other hand, 1 in box is grown：The Insertion Loss of N couplers is smaller so that the splitting ratio in increase PON is possibly realized, therefore, the length in the present invention is ensureing the length of optical signal in the case of the transmission away from box, increases the splitting ratio in PON.

Description

A kind of photoelectricity optical repeater, length are away from box and the processing method to upper and lower traveling optical signal
Technical field
The present invention relates to soft exchange technical field, more particularly to a kind of photoelectricity optical repeater, length are away from box and to up-downgoing light The processing method of signal.
Background technology
Under the overall background of global IT application, broadband access quickly grows.Intelligent acess（Fiber-to-the-x, FTTx） Construction mode considerably reduces the construction cost of broadband access network, and is carried with the bandwidth that relatively low cost realizes access network Rise, the propulsion of the integration of three networks is again for the development of FTTx adds powerful power.
With the propulsion of FTTx networkings, the highly desirable reduction FTTx network construction costs of operator and O＆M cost, Large Copacity, few office is the developing direction of Future Access Network.
EPON（Passive Optical Network, PON）Technology is a kind of intelligent acess skill of point-to-multipoint Art.Conventional division multiplexing passive optical network network sometimes（Time Division Multiplexing PON, TDM-PON）With when partial wave Divide mixed multiplexing passive optical network（Hybird PON, H-PON）.
In TDM-PON, system up-downgoing uses single wavelength, and to uplink optical signal, each user uses different time slots It is transmitted, to downlink optical signal, is transmitted using the forms of broadcasting.Fig. 1 is existing TDM-PON structural representations, including：Light Line terminal（Optical Line Terminal, OLT）, optical network unit（Optical Network Unit, ONU）, relaying Device（Mid-Span Extender）And optical splitter（splitter）.
Generally, an OLT connects multiple ONU and constitutes point-to-multipoint knot by a repeater and an optical splitter Structure, shown in Fig. 1 is that 4 OLT pass through 4 repeaters 4 optical splitters of connection, 4 Optical Distribution Networks of formation respectively （Optical Distribution Network, ODN）Structural representation.
In TDM-PON structural representations shown in Fig. 1, on the one hand, for uplink optical signal, it is up that ONU launches The power of optical signal specifies within limits；On the other hand, the Insertion Loss of optical splitter and the splitting ratio of its own are into just Than, splitting ratio is bigger, and Insertion Loss is bigger, therefore, which limits the transmission range of optical signal, to ensure to realize big splitting ratio, Then the transmission range of optical signal will shorten, to guarantee realize optical signal length away from transmission, splitting ratio will reduce, in light splitting In the case of smaller, in order to load more user, it is necessary to set a fairly large number of PON ports.But the PON ends in OLT Mouth quantity is limited, wants newly-increased PON ports, it is necessary to newly-increased OLT, and plurality is set up using the PON ports of newly-increased OLT The ODN of amount.And increase OLT newly and set up greater number of ODN all by increase networking cost and O＆M cost.
In addition, in the TDM-PON structures shown in Fig. 1, the complex structure of repeater realizes that difficulty is big.
In H-PON, system enters the transmission of traveling optical signal using the different light wave of wavelength, is used again below each wavelength Time-multiplexed mode enters the transmission of traveling optical signal.Fig. 2 is the composition structural representation of existing H-PON, including：Mixing optical link Terminal（Hybrid OLT, H-OLT）, repeater（Mid-Span Extender）, mixed optical network unit（Hybrid ONU, H- ONU）And optical splitter.Wherein, local multiple is used to receive and sends difference by H-OLT by local multiplexing demultiplexing device The PON ports of the optical signal of wavelength couple together（Multiple PON ports are now claimed to be multiplexed/demultiplex be connected them one A H-PON port of H-OLT is collectively formed with device）, realize the communication with repeater.Be there is also in above-mentioned H-PON and TDM- The similar problem of PON structure.
In sum, in current passive optical network technique, if there is the length that ensure realizing optical signal away from transmission In the case of, the less problem of splitting ratio.
The content of the invention
A kind of photoelectricity optical repeater is the embodiment of the invention provides, is used to solve repeater structure of the prior art and is answered It is miscellaneous, realize the big problem of difficulty.
A kind of photoelectricity optical repeater, the photoelectricity optical repeater includes：ONU transceiver and OLT transceivers；
The ONU transceiver, for the downlink optical signal of reception to be carried out opto-electronic conversion and to be amplified again export after reshaping Give OLT transceivers, and export after the uplink electrical signals from OLT transceivers are carried out into electro-optic conversion；
The OLT transceivers, the downstream electrical signals for ONU transceiver to be exported are exported after carrying out electro-optic conversion, and The uplink optical signal of reception is carried out into opto-electronic conversion and is exported to ONU transceiver after amplifying reshaping again.
Photoelectricity optical repeater in the embodiment of the present invention, is made up of, due to each transceiver ONU transceiver and OLT transceivers Function is well defined, therefore, simple structure is easier to realize.
The embodiment of the present invention additionally provides a kind of length away from box and the processing method to upper and lower traveling optical signal, is used to solve In PON, it is ensured that the length of optical signal in the case of the transmission, the less problem of splitting ratio.
One kind is long away from box, and the length includes away from box：Photoelectricity optical repeater and 1：N couplers, the N is just whole more than 1 Number；
The photoelectricity optical repeater, for the downlink optical signal from optical line terminal OLT being carried out into reshaping and being put again Exported to 1 after big：N couplers, will be from 1：The uplink optical signal of N couplers carries out reshaping and is exported to OLT after amplifying again；
Described 1：N couplers, for the downlink optical signal of the output of photoelectricity optical repeater to be divided into N roads, and export respectively Itself connected N number of optical splitter is given, and the uplink optical signal that each optical splitter being connected with itself is exported is coupled as all the way After export and give photoelectricity optical repeater.
It is a kind of using above-mentioned length away from box to the processing method of uplink optical signal, methods described includes：
1：N couplers export each optical splitter when the uplink optical signal from coupled each optical splitter is received Uplink optical signal be coupled as exporting afterwards all the way and give photoelectricity optical repeater；
Photoelectricity optical repeater is to 1：The uplink optical signal of N couplers output carries out reshaping and is exported to OLT after amplifying again.
It is a kind of using above-mentioned length away from box to the processing method of downlink optical signal, methods described includes：
Photoelectricity optical repeater enters the downlink optical signal when the downlink optical signal from optical line terminal OLT is received Row reshaping and export to 1 after amplifying again：N couplers；
1：The downlink optical signal of the output of photoelectricity optical repeater is divided into N roads by N couplers, and output gives itself phase respectively N number of optical splitter even.
One kind is long away from box, and the length includes away from box：First multiplexing demultiplexing device, the second multiplexing demultiplexing device, 1：N is coupled Device and n photoelectricity optical repeater, the N are the positive integer more than 1, and the n is the positive integer more than or equal to 2；
First multiplexing demultiplexing device, the descending light for the downlink optical signal from H-OLT to be decomposed into m roads is believed Number, and export respectively to m photoelectricity optical repeater, and the uplink optical signal from photoelectricity optical repeater is synthesized on the way Traveling optical signal is sent to H-OLT, wherein, in the downlink optical signal on the m roads, carry the wavelength of the light wave per road downlink optical signal Different, the m is the positive integer more than 1 and less than or equal to n；
The photoelectricity optical repeater, for by the downlink optical signal from the first multiplexing demultiplexing device carry out reshaping and Exported after amplifying again to the second multiplexing demultiplexing device, and the uplink optical signal from the second multiplexing demultiplexing device is carried out again Shaping and export to the first multiplexing demultiplexing device after amplifying again；
Second multiplexing demultiplexing device, for descending light all the way will to be combined into from photoelectricity optical repeater downlink optical signal Exported to 1 after signal：N couplers, and will be from 1：The uplink optical signal of N couplers is decomposed into k roads uplink optical signal, and divides Do not export to k photoelectricity optical repeater, wherein, in the uplink optical signal of the k roads, carry the ripple of the light wave per road uplink optical signal Length is different, and the k is the positive integer more than 1 and less than or equal to n；
Described 1：N couplers for being divided into N roads and defeated respectively by the downlink optical signal from the second multiplexing demultiplexing device Go out to give itself connected N number of optical splitter, and the uplink optical signal that each optical splitter being connected with itself is exported is coupled as one Exported behind road to the second multiplexing demultiplexing device.
It is a kind of using above-mentioned length away from box to the processing method of uplink optical signal, methods described includes：
1：N couplers when the uplink optical signal from coupled each optical splitter is received, by the upper of each optical splitter Traveling optical signal is coupled as exporting afterwards all the way to the second multiplexing demultiplexing device；
Second multiplexing demultiplexing device is by 1：Carrying optical signal in the uplink optical signal of N couplers output, to be decomposed into k roads up Optical signal, and export respectively to k photoelectricity optical repeater, wherein, in the uplink optical signal of the k roads, carry the up light letter per road Number light wave wavelength it is different, the k is the positive integer more than 1 and less than or equal to n；
K photoelectricity optical repeater carries out reshaping and again to the uplink optical signal of the second multiplexing demultiplexing device output respectively Exported after amplification to the first multiplexing demultiplexing device；
The uplink optical signal that k photoelectricity optical repeater is exported is combined into uplink optical signal all the way by the first multiplexing demultiplexing device, And export to H-OLT.
It is a kind of using above-mentioned length away from box to the processing method of downlink optical signal, methods described includes：
First multiplexing demultiplexing device decomposes the downlink optical signal when the downlink optical signal from H-OLT is received It is the downlink optical signal on m roads, and exports respectively to m photoelectricity optical repeater, wherein, in the downlink optical signal on the m roads, carry Wavelength per the light wave of road downlink optical signal is different, and the m is the positive integer more than 1 and less than or equal to n；
M photoelectricity optical repeater carries out reshaping and again to the downlink optical signal of the first multiplexing demultiplexing device output respectively Exported after amplification to the second multiplexing demultiplexing device；
The downlink optical signal on the m roads that the second multiplexing demultiplexing device will be received be combined into downlink optical signal all the way and export to 1：N couplers；
1：The downlink optical signal that second multiplexing demultiplexing device is exported is divided into N roads by N couplers, and output gives certainly respectively The connected N number of optical splitter of body.
In the scheme of the embodiment of the present invention, on the one hand, the length being connected with a PON port of OLT is away from box or with H-OLT's Photoelectricity optical repeater of the connected length in one H-PON port in box carries out reshaping to uplink and downlink signals and amplifies again respectively, And the downlink optical signal output after reshaping is amplified again, extend the transmission range of optical signal；On the other hand, grow in box 1：The Insertion Loss of N couplers is smaller so that the splitting ratio in increase PON is possibly realized, therefore, the length in the present invention is ensureing away from box The length of optical signal increases the splitting ratio in PON in the case of the transmission.
Brief description of the drawings
Fig. 1 is the composition structural representation of the TDM-PON in background technology；
Fig. 2 is the composition structural representation of the H-PON in background technology；
Fig. 3 is the structural representation of the photoelectricity optical repeater in the embodiment of the present invention one；
Fig. 4 is the structural representation of the photoelectricity optical repeater in the embodiment of the present invention one；
Fig. 5 is the principle schematic of the wave-division multiplexer filter separation optical signal in the embodiment of the present invention one；
Fig. 6 is the structural representation of the photoelectricity optical repeater in the embodiment of the present invention one；
Fig. 7 is the structural representation of the photoelectricity optical repeater in the embodiment of the present invention two；
Fig. 8 is the clock signal schematic diagram of the logic unit output in the embodiment of the present invention two；
Fig. 9 is the length in the embodiment of the present invention three away from box structural representation；
Figure 10 is 1 in the embodiment of the present invention three：The structural representation that 4 couplers are connected with multimode fibre and single-mode fiber Figure；
Figure 11 is applied to the structural representation of GPON systems for the length in the embodiment of the present invention three away from box；
Figure 12 is the length in the embodiment of the present invention three away from box structural representation；
Figure 13 is the length in the embodiment of the present invention three away from box structural representation；
Figure 14 is the length in the embodiment of the present invention three away from box structural representation；
Figure 15 is the length in the embodiment of the present invention four away from box structural representation；
Figure 16 is the length in the embodiment of the present invention four away from box structural representation；
Figure 17 is the length in the embodiment of the present invention four away from box structural representation；
Figure 18 is the length in the embodiment of the present invention four away from box structural representation；
Figure 19 is applied to the structural representation of H-PON systems for the length in the embodiment of the present invention four away from box；
Figure 20 is a kind of processing method schematic diagram to uplink optical signal in the embodiment of the present invention five；
Figure 21 is a kind of processing method schematic diagram to downlink optical signal in the embodiment of the present invention six；
Figure 22 is a kind of processing method schematic diagram to uplink optical signal in the embodiment of the present invention seven；
Figure 23 is a kind of processing method schematic diagram to downlink optical signal in the embodiment of the present invention eight.
Specific embodiment
The 1 of the embodiment of the present invention：N in N couplers is the positive integer more than 1, the value of N can according to the actual requirements and It is determined that, in the scheme of the embodiment of the present invention, illustrated so that N takes 4 as an example.
The solution of the present invention is described in detail below by specific embodiment.
Embodiment one
As shown in figure 3, be the structural representation of photoelectricity optical repeater 21 in the embodiment of the present invention one, the smooth electric light relaying Device 21 includes：ONU transceiver 31 and OLT transceivers 32.
The ONU transceiver 31, for carrying out opto-electronic conversion to the downlink optical signal for receiving and amplifying reshaping again, and Exported changing and amplifying the downstream electrical signals obtained after reshaping again to OLT transceivers 32, and to from OLT transceivers 32 Uplink electrical signals carry out electro-optic conversion, and the uplink optical signal output that will be obtained after conversion；
When the photoelectricity optical repeater repeater applications are in TDM-PON, the descending light letter that ONU transceiver 31 is received Number can be from the OLT in the TDM-PON；Now, the uplink optical signal output that ONU transceiver 31 will can be obtained after conversion To the OLT.
When the photoelectricity optical repeater repeater applications are in H-PON, the downlink optical signal that ONU transceiver 31 is received Can be from the H-OLT in the H-PON；Now, ONU transceiver 31 can by the uplink optical signal obtained after conversion export to The H-OLT.
The OLT transceivers 32, for the downstream electrical signals that ONU transceiver 31 is exported to be carried out with electro-optic conversion, and will turn The downlink optical signal output obtained after changing, and uplink optical signal to receiving carries out opto-electronic conversion and amplifies reshaping again, And exported changing and amplifying the uplink electrical signals obtained after reshaping again to ONU transceiver 31.
The uplink optical signal that the OLT transceivers 32 are received can be from 1：N couplers, and can be by after conversion The downlink optical signal for obtaining is exported to 1：N couplers.
Specifically, the OLT transceivers 32 include：First signal adapter 41 and the first smooth diplexer 42, wherein, it is described First signal adapter 41 has uplink optical signal receiving port and downlink optical signal emission port.
The first smooth diplexer 42, for being separated to the optical signal for receiving, when uplink optical signal is received, The uplink optical signal is exported to the uplink optical signal receiving port of the first signal adapter 41, turned from the first signal receiving During the downlink optical signal of the downlink optical signal emission port output of parallel operation 41, by downlink optical signal output；
First signal adapter 41, for the uplink optical signal that uplink optical signal receiving port is received to be carried out into photoelectricity Change and exported to ONU transceiver 31 after amplifying reshaping again, and the downstream electrical signals that ONU transceiver 31 is exported carry out electricity Exported to the first smooth diplexer 42 through downlink optical signal emission port after light conversion.
Specifically, first signal adapter includes：First photoelectric conversion unit 51 and the first electrooptic switching element 52；
First photoelectric conversion unit 51 is used to for uplink optical signal to carry out opto-electronic conversion and amplifies reshaping again；
First electrooptic switching element 52, the downstream electrical signals for ONU transceiver 31 to be exported carry out electro-optic conversion Obtain downlink optical signal.
Above-mentioned first signal adapter 41 is real due to uplink optical signal receiving port and downlink optical signal emission port The transmitting-receiving for having showed optical signal is separated, therefore reduces loss of the optical signal in converter inside, and then improves downlink optical signal Transmission power.
Preferably, the described first smooth diplexer is wave-division multiplexer filter or optical circulator.
When the described first smooth diplexer 42 is wave-division multiplexer filter, the structural representation of the photoelectricity optical repeater is such as Shown in Fig. 4.R shown in Fig. 4 is the reflector port of wave-division multiplexer filter, and P is the transmission port of wave-division multiplexer filter, C It is the public port of wave-division multiplexer filter, wherein：Reflector port R is descending with the first signal adapter 41 by single-mode fiber Optical signal launch port is connected, and transmission port P is by multimode fibre and the uplink optical signal receiving terminal of the first signal adapter 41 Mouth is connected, and public port C can be connected by multimode fibre with other devices in PON, and such as 1：N couplers.
On the basis of above-mentioned annexation, the processing procedure of the optical signal to receiving of the wave-division multiplexer filter For：
To downlink optical signal：The reflector port R of wave-division multiplexer filter receives the descending light from the first signal adapter 41 The downlink optical signal of signal emission port output, wave-division multiplexer filter is passed through public port C and is exported；
To uplink optical signal：The public port C of wave-division multiplexer filter receives uplink optical signal, wave-division multiplexer filter pair It is separated, and it is exported from transmission port P to the downlink optical signal receiving port of the first signal adapter 41.
Above-mentioned wave-division multiplexer filter separates the principle of optical signal as shown in figure 5, as shown in Figure 5, wave-division multiplexer filter The optical signal being input into from public port C is separated using linear filter piece, when the wavelength of the optical signal of input is less than sideband During the sideband wavelength of filter plate, it is exported from P mouthfuls；When the sideband wavelength of the wavelength more than linear filter piece of the optical signal of input When, it is exported from R mouthfuls.
The sideband wavelength of the linear filter piece can determine according to the wave-length coverage of upper and lower traveling optical signal, for example：Assuming that The wave-length coverage of uplink optical signal is 1260 nanometers（nm）~ 1360nm, the wave-length coverage of downlink optical signal for 1480nm ~ 1550nm, then sideband wave is long is less than 1480nm more than 1360nm, for example, 1450nm can be taken.
When the described first smooth diplexer 42 is optical circulator, structural representation such as Fig. 6 institutes of the photoelectricity optical repeater Show.Optical circulator shown in Fig. 6 has three ports, respectively port 1, port 2 and port 3,（Represented with 1,2,3 in Fig. 6）, Wherein：Port 1 is connected by single-mode fiber with the downlink optical signal emission port of the first signal adapter 41, and port 3 is by more Mode fiber is connected with the uplink optical signal receiving port of the first signal adapter 41, and port 2 can be by multimode fibre and the external world It is connected.
On the basis of above-mentioned annexation, the processing procedure of optical signal of the optical circulator to receiving is：
To downlink optical signal：The port 1 of optical circulator receives the downlink optical signal transmitting terminal from the first signal adapter 41 The downlink optical signal of mouth output, is directed to port 2；
To uplink optical signal：The port 2 of optical circulator receives the uplink optical signal of extraneous input, is directed to port 3 simultaneously Export to the downlink optical signal receiving port of the first signal adapter 41.
In above-mentioned optical circulator, port 1 is the input port of optical signal, and port 2 is the input/output end port of optical signal, Port 3 is the output port of optical signal, and the transmission path of optical signal can only be from port 1 to port 2, or from port 2 to port 3, other transmission paths are forbidden.
Specifically, the ONU transceiver 31 includes：The smooth diplexer 44 of secondary signal converter 43 and second.
The second smooth diplexer 44, for being identified to the optical signal for receiving, when downlink optical signal is received, The downlink optical signal is exported to secondary signal converter 43, the up light letter from the output of secondary signal converter 43 is being received Number when, by the uplink optical signal output exported to OLT through current divider；
The secondary signal converter 43, electric light is carried out for the first photoelectricity to be turned into the uplink electrical signals that unit 51 exports Through exporting to the second smooth diplexer 43 after conversion, and the downlink optical signal that the second smooth diplexer 43 is exported is carried out into opto-electronic conversion And exported to the first electrooptic switching element 52 after amplifying reshaping again；
Specifically, the secondary signal converter includes：Second photoelectric conversion unit 53 and the second electrooptic switching element 54；
Second photoelectric conversion unit 53 is used to for the downlink optical signal that the second smooth diplexer 43 is exported to carry out photoelectricity turn Change and amplify reshaping again；
Second electrooptic switching element 54, for the uplink electrical signals that the first photoelectric conversion unit 51 is exported to be carried out into electricity Light is converted to uplink optical signal.
Photoelectricity optical repeater in the embodiment of the present invention one, is made up of, due to each transmitting-receiving ONU transceiver and OLT transceivers Device function is well defined, therefore, simple structure is easier to realize.
Embodiment two
Needed it when the transmitting of uplink optical signal is not carried out in view of the ONU transceiver 31 in photoelectricity optical repeater 21 Emission switch is closed, and stops the operation for uplink optical signal, to avoid the crosstalk of other optical signals, it is ensured that photoelectricity optical repeater Normal work；And ONU transceiver 32 keeps reset state in time when this receives uplink optical signal, in order to The uplink optical signal that next time is input into it is processed, the embodiment of the present invention two is based on the basis of embodiment one, to photoelectricity The structure of optical repeater makees further optimization, and its schematic diagram is as shown in Figure 7.
The photoelectricity optical repeater 21 also includes：Logic unit 33；
The OLT transceivers 32, are additionally operable to export detection signal to logic unit, and the detection signal is OLT transceivers What the power and the length of duration of the uplink optical signal according to input were exported.The detection signal can be:Signal detection （Signal Detect, SD）Signal or dropout（Lost of Signal, LOS）Signal, the detection signal is SD signals When, detection signal is high level effectively when OLT receivers receive uplink optical signal；When the detection signal is LOS signals, inspection Survey signal effective when OLT receivers do not receive uplink optical signal, be low level；
The logic unit 33, for when the detection signal for receiving is SD signals and invalid detection signal, indicating ONU to receive Hair device and OLT receivers stop performing the operation for uplink optical signal, are SD signals and detection letter in the detection signal for receiving When number effectively, ONU transceiver and OLT receivers is indicated to perform the operation for uplink optical signal；It is in the detection signal for receiving When LOS signals and effective detection signal, ONU transceiver and OLT receivers is indicated to stop performing the operation for uplink optical signal, When the detection signal for receiving is LOS signals and invalid detection signal, ONU transceiver and OLT receivers is indicated to perform for upper The operation of traveling optical signal.
In order to further be processed uplink optical signal so that from the letter of the uplink optical signal of photoelectricity optical repeater output Preferably, preferably, the photoelectricity optical repeater 21 also includes clock data recovery unit 34, clock unit 35 and fixed again for number quality Shi Danyuan 36, wherein：
Clock data recovery unit 34, the downstream electrical signals for receiving the output of ONU transceiver 31, and from the descending telecommunications Clock signal is extracted in number, clock signal is exported to clock unit 35, the downstream electrical signals are exported to OLT transceivers 32；
Clock unit 35, for according to requirement of the timing unit 36 to timing parameter again, the clock signal to receiving to be entered Row treatment, obtains reference clock, and the reference clock is exported to timing unit 36 again；
Timing unit 36 again, the uplink electrical signals for receiving the output of OLT transceivers 32, using the reference clock for receiving The uplink electrical signals are carried out with timing again, and the uplink electrical signals after timing again are exported to ONU transceiver 31.
The logic unit 33, is additionally operable to, when the detection signal for receiving is effective, indicate again timing unit 36 pairs locally to post Storage is resetted, or, when the detection signal for receiving is invalid, indicate again timing unit 36 to carry out the register of its own Reset, reset the register of its own in order to timing unit again, be that the uplink electrical signals for receiving next time carry out timing again.
Specifically, logic unit 33 is after the detection signal for receiving the output of OLT transceivers, following signal is exported, to refer to Show that corresponding device or unit in photoelectricity optical repeater carry out the operation to uplink optical signal.Here it is SD signals with detection signal As a example by illustrate.
Reset2 is the reset signal that logic unit is exported to OLT transceivers, in SD invalidating signals, indicates OLT transmitting-receivings Device stops the operation for uplink optical signal, when SD signals are effective, indicates OLT transceivers to perform the behaviour for uplink optical signal Make；
Reset1 is the reset signal that logic unit is exported to timing unit again, when SD signals are effective, indicates timing again The local register of unit 36 pairs resets；
Tx_burst is the switch controlling signal that logic unit is exported to ONU transceiver, and when SD signals are effective, OLT is received Hair device performs the operation for uplink optical signal.
Assuming that the uplink optical signal OLT Optical that receive of OLT transceivers (guard times in Fig. 8 as shown in Figure 8 （Guard Time）, represent does not have upward signal to be input into OLT transceivers in the time period), then OLT transceivers are exported to logic The SD signals of unit, and logic unit is as follows according to the process of reset2, reset1 and Tx_burst of SD signal outputs：
[1], at the t1 moment, uplink optical signal is input into OLT transceivers, by time delay tdelay1, OLT is defeated to logic unit Go out high level（SD signals show have uplink optical signal to be input into high level in Fig. 8）；
[2], logic unit detects SD signals for high level, by time delay tdelay6, it is defeated to ONU transceiver at the t2 moment Go out high level（Tx_burst in Fig. 8 is now high level）, indicate ONU transceiver to open emission switch, perform for up The operation of optical signal.
[3], logic unit detects SD signals for high level, by time delay tdelay4, it is defeated to OLT transceivers at the t3 moment Go out low level（Reset2 in Fig. 8 is now low level）, indicate the revocation of OLT transceivers to reset, perform and be directed to uplink optical signal Operation.
[4], logic unit is after the t3 moment, by time delay tdelay5, reset signal is exported to timing unit again at the t4 moment （Reset1 in Fig. 8 is now high level）, indicate again timing unit to reset, then timing unit resets local register, opens Begin to perform the fixed cycle operator again for the uplink electrical signals being input into.
[5], at the t5 moment, uplink optical signal is not had to be input into OLT transceivers, OLT transceivers are by time delay tdelay2In t6 Carve and export low level to logic unit（SD signals in Fig. 8 are now low level）.
[6], logic unit detects detection signal for low level and keeps certain width Tth（The Tth can be by logic The register of unit is configured）, by time delay tdelay6, low level is exported to ONU transceiver at the t7 moment（Tx_ in Fig. 8 Burst is now low level）, indicate ONU transceiver to close emission switch, stop the operation for uplink optical signal.
[7], logic unit detects SD signals for low level, by time delay tdelay3, it is defeated to OLT transceivers at the t8 moment Go out high level（Reset2 in Fig. 8 is now high level）, indicate OLT transceivers to reset, stop the behaviour for uplink optical signal Make, and keep reset state.
Above-mentioned tdelay1、tdelay2Can be configured by the register of OLT transceivers, tdelay3、tdelay4、tdelay5、 tdelay6Can be configured by the register of logic unit.What above-mentioned reset1 and reset2 showed is high level effectively, when So, it is also possible to be configured to Low level effective.
By the scheme of the embodiment of the present invention two, photoelectricity optical repeater realizes reshaping to uplink optical signal, puts again Big and timing again so that export preferable to the uplink optical signal quality of OLT or H-OLT, improve the reliability of fiber optic communication, by Photoelectricity optical repeater in the embodiment of the present invention two can carry out reshaping to up light, amplify again and timing and to descending again Optical signal carries out reshaping, amplifies again, therefore, the photoelectricity optical repeater in the embodiment of the present invention can zoom out the transmission of optical signal Distance.
Embodiment three
As shown in figure 9, the structural representation for the length in the embodiment of the present invention three away from box, the length includes away from box：Photoelectricity Optical repeater 21 and 1：4 couplers 22.
The photoelectricity optical repeater 21, for carrying out reshaping and amplifying again the downlink optical signal from OLT after export To 1：4 couplers, will be from 1：The uplink optical signal of 4 couplers carries out reshaping and is exported to OLT after amplifying again；
Described 1：N couplers 22 for being divided into 4 tunnels and defeated respectively by the downlink optical signal of the output of photoelectricity optical repeater Go out to give itself 4 connected optical splitter, and the uplink optical signal that each optical splitter being connected with itself is exported is coupled as one Exported behind road to photoelectricity optical repeater 21.
Preferably, it is described in order to reduce uplink optical signal by 1：The Insertion Loss of 4 couplers, photoelectricity optical repeater 21 and 1：4 Coupler 22 passes through multimode fibre（Multi-Mode Fiber, MMF）It is connected.
Due to 1：4 couplers 22 have the asymmetry of optical signal loss, the i.e. loss of optical signal with optical signal by certainly The direct of travel of body is relevant, when optical signal from single-mode fiber (Single Mode Fiber, SMF) through 1：4 couplers 22 are transferred to Multimode fibre, the loss of optical signal is 1dB；And work as optical signal from multimode fibre through 1：4 couplers 22 are transferred to single-mode fiber, light The loss of signal and 1:The loss of 4 optical splitters is identical, is 10lg (1/4) dB, therefore, in embodiments of the invention in light electric light After device 21 and 1：4 couplers 22 pass through multimode fibre（Multi-Mode Fiber, MMF）Be connected, and pair with downlink optical signal Loss, is made up by photoelectricity optical repeater 21 to the increase of the multiplication factor of downlink optical signal.
Specifically, 1：The structural representation that 4 couplers 22 are connected with multimode fibre and single-mode fiber is as shown in Figure 10, its Middle multimode fibre and 1：The multimode port of 4 couplers is connected, single-mode fiber and 1：The single mode port of 4 couplers is connected.
When 4 road uplink optical signals are transferred to 1 by multiple single-mode fibers：During 4 coupler, 1：4 couplers are up to 4 tunnel Optical signal utilizes flowcollector aggregation scheme FlowCollector（Such as：Lens, fusion vertebral pulling mode）It is combined into and export all the way to multimode fibre.
Preferably, the length also includes away from box：Current divider 23 and local management unit 24；
The current divider 23, for the downlink optical signal from OLT to be divided into two-way, exports to local management unit all the way 24, another road is exported to the photoelectricity optical repeater 21, and the photoelectricity optical repeater 21 and local management unit are exported Uplink optical signal be forwarded to OLT.
The local management unit 24, for entering line parameter to photoelectricity optical repeater 21 according to the downlink optical signal for receiving Configuration, and report local parameter information to OLT.
Specifically, the local management unit 24 receives the letter of the parameter configuration comprising photoelectricity optical repeater 21 from OLT The downlink optical signal of breath, and managed by ONU and control interface using the parameter configuration（ONU Management and Control Interface, OMCI）Passage is to the power of the transmitting optical signal of photoelectricity optical repeater 21, the work(of reception optical signal Rate and its operating voltage and bias current configured, managed and safeguarded to photoelectricity optical repeater, and the OMCI passages are local Passage between administrative unit and photoelectricity optical repeater.
It should be noted that the local management unit in the present embodiment three receives the downlink optical signal from current divider 23 coming Parameter configuration is carried out to photoelectricity optical repeater, now, the configuration information is exported away from the PON ports that box is connected from the length, But the local management unit in the scheme of the present embodiment one is not limited to receive from the PON being connected away from box with the length belonging to it The downlink optical signal of port, it is also possible to receive the parameter configuration in the downlink optical signal of other PON ports from OLT, Realize to the parameter configuration of photoelectricity optical repeater, management and safeguard using the parameter configuration.
Length in the embodiment of the present invention three is applied to time division multiplex away from box（Time Division Multiplexer) In PON system, for example：Ether PON（Ethernet Passive Optical Networks, EPON）System, gigabit PON （Gigabit-capable Passive Optical Networks, GPON）System, 10,000,000,000 PON（10G-PON）System, XG- PON system, in different systems, can enter to the requirement according to each system of photoelectricity optical repeater of the length of the invention in box The corresponding configuration of row, to adapt to corresponding system.
Due in the scheme of the embodiment of the present invention three, on the one hand, the photoelectricity optical repeater in box long is believed up-downgoing light Number reshaping is carried out and has amplified again, extended the transmission range of optical signal, on the other hand, due to 1:N couplers are to up light The Insertion Loss of signal is smaller, can increase the splitting ratio in TDM-PON away from box using the length in the embodiment of the present invention.Therefore, it can , increase splitting ratio big away from transmission situation in the length of guarantee optical signal is realized, and then causes to utilize the PON ports of negligible amounts, just More user can be loaded.
Figure 11 shows that the length in the embodiment of the present invention three is applied to the structural representation of GPON systems away from box, in fig. 11 1 is included in box with long:As a example by 4 couplers, by length of the invention away from box, 4 ODN in background technology are set up Under one PON port of the OLT of GPON, while also achieving big splitting ratio, more ONU can be connected, namely service is more User, and then reduce networking cost and O＆M cost.
The function of the structure and the composition device away from box long away from box long of above-described embodiment three pairs is described, preferably, Photoelectricity optical repeater in the embodiment of the present invention three can be the photoelectricity optical repeater in the embodiment of the present invention one and embodiment two.
When the photoelectricity optical repeater during photoelectricity optical repeater is Fig. 3, the structure of length in the embodiment of the present invention three away from box As shown in figure 12, wherein, OLT transceivers 32, for carrying out electro-optic conversion to the downstream electrical signals that ONU transceiver 31 is exported, and The downlink optical signal obtained after conversion is exported to 1：4 couplers 22, and to from 1：The uplink optical signal of 4 couplers 22 enters Row opto-electronic conversion and amplify reshaping again, and conversion and will again amplify the uplink electrical signals obtained after reshaping and export and be received to ONU Hair device 31.
The first smooth diplexer 42, for being separated to the optical signal for receiving, is receiving from 1：N couplers During 22 uplink optical signal, the uplink optical signal is exported to the uplink optical signal receiving port of the first signal adapter 41, Receive from the downlink optical signal that the downlink optical signal emission port of the first signal adapter 41 is exported when, by the downlink optical signal Export to 1：4 couplers 22；
When the described first smooth diplexer 42 is wave-division multiplexer filter, structural representation of the length away from box such as Figure 13 institutes Show.The public port C of the reflector port of wave-division multiplexer filter passes through multimode fibre and 1 in Figure 13：The multimode end of N couplers 22 Mouth is connected.
On the basis of above-mentioned annexation, the processing procedure of the optical signal to receiving of the wave-division multiplexer filter For：
To downlink optical signal：The reflector port R of wave-division multiplexer filter receives the descending light from the first signal adapter 41 The downlink optical signal of signal emission port output, wave-division multiplexer filter is separated to downlink optical signal, is passed through public Port C is exported to 1：The multimode port of 4 couplers 22；
To uplink optical signal：The public port C of wave-division multiplexer filter receives 1：The multimode port output of 4 couplers 22 Uplink optical signal, wave-division multiplexer filter is separated to it, and it is exported to the first signal adapter 41 from transmission port P Downlink optical signal receiving port.
Because optical signal is smaller to multimode fibre Insertion Loss from single-mode fiber, and from multimode fibre to single-mode fiber Insertion Loss compared with Greatly, therefore, in the transmitting procedure of wave-division multiplexer filter, downlink optical signal signal is through single-mode optics for above-mentioned upper and lower traveling optical signal Fine input reflection port R to public port C, Insertion Loss is smaller；Uplink optical signal is saturating from public port C to what is be connected with multimode fibre Penetrate port P Insertion Loss also smaller.
When the described first smooth diplexer 42 is optical circulator, structural representation of the length away from box is as shown in figure 14.Figure Optical circulator shown in 14 has three ports, respectively port 1, port 2 and port 3,（Represented with 1,2,3 in Figure 14）, its In：Port 1 is connected by single-mode fiber with the downlink optical signal emission port of the first signal adapter 41, and port 3 passes through multimode Optical fiber is connected with the uplink optical signal receiving port of the first signal adapter 41, and port 2 passes through multimode fibre and 1：4 couplers 22 Multimode port be connected.
On the basis of above-mentioned annexation, the processing procedure of optical signal of the optical circulator to receiving is：
To downlink optical signal：The port 1 of optical circulator receives the downlink optical signal transmitting terminal from the first signal adapter 41 The downlink optical signal of mouth output, is directed to port 2 and exports to 1：The multimode port of N couplers 22；
To uplink optical signal：The port 2 of optical circulator receives 1：The up light letter of the multimode port output of 4 couplers 22 Number, it is directed to port 3 and exports to the downlink optical signal receiving port of the first signal adapter 41.
The second smooth diplexer 44, for being separated to the optical signal for receiving, is receiving from the descending of OLT During optical signal, the downlink optical signal is exported to secondary signal converter 43, exported from secondary signal converter 43 receiving Uplink optical signal when, by the uplink optical signal output exported to OLT through current divider 23.
By the scheme of the embodiment of the present invention three, the photoelectricity optical repeater in box long is realized to uplink optical signal again Shaping, amplify again and again timing so that export to OLT uplink optical signal quality preferably, improve the reliability of fiber optic communication, Reshaping can be carried out to up light away from box due to the length in the embodiment of the present invention three, amplified again and timing and descending light is believed again Number carry out reshaping, amplify again, therefore, the length in the embodiment of the present invention can zoom out the transmission range of optical signal away from box, and this is just Allow that the length in the embodiment of the present invention is placed from OLT remote positions away from box.
Example IV
In in view of existing passive optical network system, in order to increase the bandwidth of user, wavelength-division multiplex technique and time-division are answered Combined with technology, while applying in passive optical network, now this kind of system is referred to as wavelength-division and time-division multiplexing passive light Network system, now the optical line terminal in the system is mixing optical line terminal（Hybird OLT, H-OLT）, ODN is mixing ODN（Hybird ODN）, ONU is also accordingly mixing ONU（Hybird ONU,H-ONU）, in order to be able to improve in this kind of system Splitting ratio under transmission long, the embodiment of the present invention four provides a kind of long away from box, and its structural representation is as shown in figure 15, the length Include away from box：First multiplexing demultiplexing device 41, the second multiplexing demultiplexing device 42,1：N couplers 43 and n photoelectricity optical repeater 44, the N are the positive integer more than 1, and the n is the positive integer more than 2, wherein：
First multiplexing demultiplexing device 41, for will be decomposed from the downlink optical signal of mixed light line terminal H-OLT It is the downlink optical signal on m roads, and exports respectively to m photoelectricity optical repeater, and by from the up light continued in photoelectricity light Signal synthesizes uplink optical signal all the way and is sent to H-OLT, wherein, in the downlink optical signal on the m roads, carry per the descending light in road The wavelength of the light wave of signal is different, and the m is the positive integer more than 1 and less than or equal to n；
The photoelectricity optical repeater 44, for the downlink optical signal from the first multiplexing demultiplexing device to be carried out into reshaping Exported after amplifying again to the second multiplexing demultiplexing device, and the uplink optical signal from the second multiplexing demultiplexing device is carried out Reshaping and export to the first multiplexing demultiplexing device after amplifying again；
Second multiplexing demultiplexing device 42, it is descending all the way for that will be combined into from photoelectricity optical repeater downlink optical signal Exported to 1 after optical signal：N couplers, and will be from 1：The uplink optical signal of N couplers is decomposed into k roads uplink optical signal, and Export respectively to k photoelectricity optical repeater, wherein, in the uplink optical signal of the k roads, carry the light wave of every road uplink optical signal Wavelength is different, and the k is the positive integer more than 1 and less than or equal to n；
Described 1：N couplers 43, described 1：N couplers, for by the downlink optical signal from the second multiplexing demultiplexing device It is divided into N roads, and output gives itself connected N number of optical splitter respectively, and by the upper of each optical splitter being connected with itself output Traveling optical signal is coupled as exporting afterwards all the way to the second multiplexing demultiplexing device.
Preferably, in the photoelectricity optical repeater 44 the default light wave for bearing downlink optical signal wavelength and first In the downlink optical signal that multiplexing demultiplexing device sends, for identical, the photoelectricity that carries the wavelength of light wave of the downlink optical signal The up light that the default wavelength for carrying the light wave of uplink optical signal and the second multiplexing demultiplexing device send in optical repeater It is identical for carrying the wavelength of light wave of the uplink optical signal in signal；
First multiplexing demultiplexing device 41, specifically for the downlink optical signal from H-OLT is decomposed under m roads Traveling optical signal, and respectively exported m roads downlink optical signal respectively according to the wavelength of the light wave for carrying each road downlink optical signal To Wavelength matched photoelectricity optical repeater；
Second multiplexing demultiplexing device 42, specifically for will be from 1：The uplink optical signal of N couplers is decomposed into k roads Uplink optical signal, and k roads uplink optical signal is distinguished defeated according to the wavelength of the light wave for carrying each road uplink optical signal respectively Go out to Wavelength matched photoelectricity optical repeater.
For example：Assuming that the number of length photoelectricity optical repeater in box is 3, respectively photoelectricity optical repeater 1, photoelectricity Optical repeater 2 and photoelectricity optical repeater 3, wherein：
The wavelength of the default light wave for bearing downlink optical signal is λ in photoelectricity optical repeater 11, it is default Wavelength X for carrying the light wave of uplink optical signal4；
The wavelength of the default light wave for bearing downlink optical signal is λ in photoelectricity optical repeater 22, it is default Wavelength X for carrying the light wave of uplink optical signal5；
The wavelength of the default light wave for bearing downlink optical signal is λ in photoelectricity optical repeater 23, it is default Wavelength X for carrying the light wave of uplink optical signal6；
Then be decomposed into the downlink optical signal from H-OLT in the downlink optical signal on 3 tunnels by the first multiplexing demultiplexing device 41, It is λ by the wavelength of light wave1Downlink optical signal export to photoelectricity optical repeater 1, by the wavelength of light wave be λ2Downlink optical signal it is defeated Go out to photoelectricity optical repeater 2, be λ by the wavelength of light wave3Downlink optical signal export to photoelectricity optical repeater 3；
Then the second multiplexing demultiplexing device 42, specifically for will be from 1：The uplink optical signal of N couplers is decomposed on k roads It is λ by the wavelength of light wave in traveling optical signal4Uplink optical signal export to photoelectricity optical repeater 1, by the wavelength of light wave be λ5's Uplink optical signal is exported to photoelectricity optical repeater 2, is λ by the wavelength of light wave6Uplink optical signal export and give photoelectricity optical repeater 3。
Preferably, the photoelectricity optical repeater includes：Optical network unit ONU transceiver and OLT transceivers；
The ONU transceiver, for the downlink optical signal from the first multiplexing demultiplexing device to be carried out into opto-electronic conversion and again Export and give OLT transceivers after amplifying reshaping, and export after the uplink electrical signals from OLT transceivers are carried out into electro-optic conversion To the first multiplex/demultiplex；
The OLT transceivers, the downstream electrical signals for ONU transceiver to be exported are exported to second after carrying out electro-optic conversion Multiplex/demultiplex, and after carrying out the uplink optical signal from the second multiplex/demultiplex opto-electronic conversion and amplify reshaping again Export to ONU transceiver.
Preferably, the photoelectricity optical repeater also includes：Logic unit；
The OLT transceivers, are additionally operable to export detection signal to logic unit, when the detection signal is SD signals, detection Signal is high level effectively when OLT receivers receive the uplink optical signal of the second multiplexing demultiplexing device output, the detection When signal is LOS signals, detection signal does not receive the uplink optical signal of the second multiplexing demultiplexing device output in OLT receivers Shi Youxiao, is low level；
The logic unit, for when the detection signal for receiving is SD signals and invalid detection signal, indicating ONU transmitting-receivings Device and OLT receivers stop performing the operation for uplink optical signal, are SD signals and detection signal in the detection signal for receiving When effectively, ONU transceiver and OLT receivers is indicated to perform the operation for uplink optical signal；It is LOS in the detection signal for receiving When signal and effective detection signal, ONU transceiver and OLT receivers is indicated to stop performing the operation for uplink optical signal, When the detection signal of reception is LOS signals and invalid detection signal, ONU transceiver and OLT receivers is indicated to perform for up The operation of optical signal.
Preferably, the photoelectricity optical repeater also includes clock data recovery unit, clock unit and timing unit again, its In：
Clock data recovery unit, the downstream electrical signals for receiving ONU transceiver output, and from the downstream electrical signals Clock signal is extracted, clock signal is exported to clock unit, the downstream electrical signals are exported to OLT transceivers；
Clock unit, for according to requirement of the timing unit to timing parameter again, at the clock signal that receives Reason, obtains reference clock, and the reference clock is exported to timing unit again；
Timing unit again, the uplink electrical signals for receiving the output of OLT transceivers, using the reference clock for receiving to institute Stating uplink electrical signals carries out timing again, and the uplink electrical signals after timing again are exported to ONU transceiver.
Preferably, the logic unit, is additionally operable to, when the detection signal for receiving is effective, indicate again timing unit to local Register is resetted, or, when the detection signal for receiving is invalid, indicate again timing unit to answer local register Position.
Preferably, the OLT transceivers include：Signal adapter and light diplexer, wherein, the signal adapter has Uplink optical signal receiving port and downlink optical signal emission port；
The smooth diplexer, for being separated to the optical signal for receiving, is receiving from the second multiplex/demultiplex During the uplink optical signal of device, the uplink optical signal is exported to the uplink optical signal receiving port of signal adapter, received From the downlink optical signal that the downlink optical signal emission port of signal adapter is exported when, the downlink optical signal is exported to second and is answered With/demultiplexer；
The signal adapter, for by the uplink optical signal that uplink optical signal receiving port is received carry out opto-electronic conversion and Exported to ONU transceiver after amplifying reshaping again, and by ONU transceiver export downstream electrical signals carry out electro-optic conversion after pass through Downlink optical signal emission port is exported to light diplexer.
Preferably, the length is managed away from box in order to realize H-OLT, the length also includes away from box：One or more Current divider 45, and one or more local management units 46, at this point it is possible to three kinds of different length realizes H- away from box structure OLT is managed to length away from box, these three different length away from box structure respectively as shown in Figure 16, Figure 17 and Figure 18, separately below The structure away from box long is illustrated with reference to Figure 16, Figure 17 and Figure 18.
For the length in Figure 16 away from box structure：It is except including the first multiplexing demultiplexing device 41, the second multiplex/demultiplex Device 42,1：Outside N couplers 43 and n photoelectricity optical repeater 44, also including a current divider 45 and a local management unit 46； Wherein：
The current divider 45, for the downlink optical signal from H-OLT to be divided into two-way, exports give local management list all the way Unit 46, another road is exported to first multiplexing demultiplexing device 41, and first multiplexing demultiplexing device defeated 41 is gone out Uplink optical signal is forwarded to H-OLT；
The local management unit 46, for being entered to the n photoelectricity optical repeater according to the downlink optical signal for receiving Line parameter is configured, and reports local parameter information to H-OLT.
For the length in Figure 17 away from box structure：It is except including the first multiplexing demultiplexing device 41, the second multiplex/demultiplex Device 42,1：Outside N couplers 43 and n photoelectricity optical repeater 44, also including n current divider 45 and a local management unit 46, And the n current divider 45 is corresponded with n photoelectricity optical repeater 44；Wherein：
The current divider 45, it is defeated all the way for the downlink optical signal from the first multiplexing demultiplexing device 41 to be divided into two-way Go out to local management unit 46, another road is exported to corresponding photoelectricity optical repeater 44, and will be from corresponding The uplink optical signal of photoelectricity optical repeater is forwarded to the first multiplexing demultiplexing device 41；
The local management unit 46, for according to the downlink optical signal that receives to the n photoelectricity optical repeater 44 Parameter configuration is carried out, and local parameter information is reported to H-OLT.
For the length in Figure 18 away from box structure：It is except including the first multiplexing demultiplexing device 41, the second multiplex/demultiplex Device 42,1：Outside N couplers 43 and n photoelectricity optical repeater 44, also including n current divider 45 and n local management unit 46, and And the n current divider 45 is corresponded with n photoelectricity optical repeater 44, the n local manager is relayed with n light electric light Device is corresponded；Wherein：
The current divider 45, it is defeated all the way for the downlink optical signal from the first multiplexing demultiplexing device 41 to be divided into two-way Go out to corresponding photoelectricity optical repeater 44, another road output gives the corresponding local management list of the photoelectricity optical repeater 44 Unit 46, and the uplink optical signal from corresponding photoelectricity optical repeater 44 is forwarded to the first multiplexing demultiplexing device 41；
The local management unit 46, for according to the downlink optical signal photoelectricity optical repeater corresponding with itself for receiving Parameter configuration is carried out, and local parameter information is reported to H-OLT.
Specifically, any photoelectricity optical repeater in above-mentioned Figure 15, Figure 16, Figure 17 and Figure 18, can be the He of embodiment one Photoelectricity optical repeater in embodiment two, the internal structure and operation principle of photoelectricity optical repeater can be with embodiment one and implementations It is identical in example two, repeat no more here.
It should be noted that the downlink optical signal that the local management unit in the present embodiment four is received to relay light electric light Device carries out parameter configuration, and now, the configuration information is exported away from the PON ports that box is connected from the length, but the present embodiment four Scheme in local management unit be not limited to believe using the descending light of PON ports being connected away from box with the length where it Number, it is also possible to using the parameter configuration in the downlink optical signal of other PON ports from OLT, using the parameter configuration Information realization is to the parameter configuration of photoelectricity optical repeater, management and safeguards.
Length in the embodiment of the present invention four is applied to time-division wavelength-division multiplex away from box（Time Division Multiplexer, Wave Division Multiplexer) PON system in.
Due in the scheme of the embodiment of the present invention four, on the one hand, the photoelectricity optical repeater in box long is believed up-downgoing light Number reshaping is carried out and has amplified again, extended the transmission range of optical signal, on the other hand, due to 1:N couplers are to up light The Insertion Loss of signal is smaller, can increase the splitting ratio in H-PON away from box using the length in the embodiment of the present invention.Therefore, it can reality Ensure that the length of optical signal is big away from transmission situation now, increase splitting ratio, and then cause using the PON ports of negligible amounts, so that it may To load more user.
Figure 19 shows that the length in the embodiment of the present invention four is applied to the structural representation of H-PON away from box, in wherein Figure 19 H-PON ports can be made up of the PON array of ports of H-OLT, 1 is included in box with long in Figure 19:4 couplers are Example, by length of the invention away from box, 4 ODN is set up under a PON port of H-OLT, while also achieving big light splitting Than, more H-ONU can be connected, namely more users are serviced, the efficiency of ODN is set up in the PON ports that improve H-OLT.
Embodiment five
Based on the length in above-described embodiment embodiment three away from box, the embodiment of the present invention five proposes a kind of to uplink optical signal Processing method, as shown in figure 20, methods described includes：
Step 101：1：N couplers when the uplink optical signal from coupled each optical splitter is received, by each point The uplink optical signal of light device is coupled as exporting afterwards all the way gives photoelectricity optical repeater；
Step 102：Photoelectricity optical repeater is to 1：The uplink optical signal of N couplers output is defeated after carrying out reshaping and amplifying again Go out to OLT.
Preferably, photoelectricity optical repeater is to 1：The uplink optical signal of N couplers output carries out reshaping, amplifies again and fixed again When after export to OLT.
Preferably, photoelectricity optical repeater is to 1：After the uplink optical signal of N couplers output carries out reshaping and amplifies again, Methods described also includes：
Current divider receives reshaping and the uplink optical signal after amplifying again, and outputs this to OLT；
Preferably, photoelectricity optical repeater is to 1：The uplink optical signal of N couplers output carries out reshaping and amplifies specific again For：
OLT transceivers are to from 1：The uplink optical signal of N couplers carries out opto-electronic conversion and is exported after amplifying reshaping again To ONU transceiver；
ONU transceiver is exported to OLT after carrying out electro-optic conversion to the uplink electrical signals from OLT transceivers.
Embodiment six
Based on the length in above-described embodiment three away from box, the embodiment of the present invention five proposes a kind for the treatment of side to downlink optical signal Method, as shown in figure 21, methods described includes：
Step 201：Photoelectricity optical repeater is descending by this when the downlink optical signal from optical line terminal OLT is received Optical signal carries out reshaping and is exported to 1 after amplifying again：N couplers.
Preferably, when the downlink optical signal from optical line terminal OLT is received, light electric light is relayed photoelectricity optical repeater The downlink optical signal that device will be received carries out reshaping, amplify again and export to 1 after timing again：N couplers.
Step 202：1：The downlink optical signal of the output of photoelectricity optical repeater is divided into N roads by N couplers, and export respectively to The N number of optical splitter being connected with itself.
Preferably, before the downlink optical signal that photoelectricity optical repeater will be received carries out reshaping and amplifies again, the side Method also includes：
Downlink optical signal from OLT is divided into two-way by current divider, is exported all the way to local management unit, another road output To the photoelectricity optical repeater；
Local management unit carries out parameter configuration according to the downlink optical signal for receiving to photoelectricity optical repeater.
Preferably, the downlink optical signal that photoelectricity optical repeater will be received carries out reshaping and amplifies again specially：
ONU transceiver carries out opto-electronic conversion to the downlink optical signal from OLT and to amplify export after reshaping again to be received to OLT Hair device；
OLT transceivers carry out electro-optic conversion to the downstream electrical signals that ONU transceiver is exported.To from 1：N couplers it is upper Traveling optical signal carries out opto-electronic conversion and is exported to ONU transceiver after amplifying reshaping again.
Embodiment seven
Based on the length in above-described embodiment four away from box, the embodiment of the present invention seven proposes a kind for the treatment of side to uplink optical signal Method, as shown in figure 22, methods described includes：
Step 301：1：N couplers when the uplink optical signal from coupled each optical splitter is received, by each point The uplink optical signal of light device is coupled as exporting afterwards all the way to the second multiplexing demultiplexing device；
Step 302：Second multiplexing demultiplexing device is by 1：The up light in k roads is decomposed into the uplink optical signal of N couplers output Signal, and export respectively to k photoelectricity optical repeater, wherein, in the uplink optical signal of the k roads, carry per road uplink optical signal Light wave wavelength it is different, the k is the positive integer more than 1 and less than or equal to n；
Step 303：K photoelectricity optical repeater is carried out again to the uplink optical signal that the second multiplexing demultiplexing device is exported respectively Shaping and export to the first multiplexing demultiplexing device after amplifying again；
Preferably, k photoelectricity optical repeater carries out whole again to the uplink optical signal of the second multiplexing demultiplexing device output respectively Shape, amplify again and again timing after export to the first multiplexing demultiplexing device；
Step 304：Be combined into the uplink optical signal that k photoelectricity optical repeater is exported on the way by the first multiplexing demultiplexing device Traveling optical signal is simultaneously exported and gives mixing optical line terminal H-OLT.
Embodiment eight
Based on the length in above-described embodiment four away from box, the embodiment of the present invention eight proposes a kind for the treatment of side to downlink optical signal Method, as shown in figure 23, methods described includes：
Step 401：First multiplexing demultiplexing device when the downlink optical signal from H-OLT is received, by the descending light Signal decomposition is the downlink optical signal on m roads, and is exported respectively to m photoelectricity optical repeater, wherein, the descending light letter on the m roads In number, carry different per the wavelength of the light wave of road downlink optical signal, the m is the positive integer more than 1 and less than or equal to n；
Step 402：M photoelectricity optical repeater is carried out again to the downlink optical signal that the first multiplexing demultiplexing device is exported respectively Shaping and export to the second multiplexing demultiplexing device after amplifying again；
Preferably, m photoelectricity optical repeater carries out whole again to the downlink optical signal of the first multiplexing demultiplexing device output respectively Shape, amplify again and again timing after export to the second multiplexing demultiplexing device；
Step 403：The downlink optical signal on the m roads that the second multiplexing demultiplexing device will be received is combined into downlink optical signal all the way And export to 1：N couplers；
Step 404：1：The downlink optical signal that second multiplexing demultiplexing device is exported is divided into N roads by N couplers, and defeated respectively Go out to give itself connected N number of optical splitter.
Obviously, those skilled in the art can carry out various changes and modification without deviating from essence of the invention to the present invention God and scope.So, if these modifications of the invention and modification belong to the scope of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to comprising these changes and modification.

Claims (25)

1. a kind of photoelectricity optical repeater, it is characterised in that the photoelectricity optical repeater includes：Optical network unit ONU transceiver and Optical line terminal OLT transceiver；
The ONU transceiver, for the downlink optical signal of reception being carried out into opto-electronic conversion and being exported to OLT after amplifying reshaping again Transceiver, and the uplink electrical signals from OLT transceivers are carried out to export after electro-optic conversion；
The OLT transceivers, the downstream electrical signals for ONU transceiver to be exported are exported after carrying out electro-optic conversion, and will be connect The uplink optical signal of receipts carries out opto-electronic conversion and is exported to ONU transceiver after amplifying reshaping again；
Wherein, the photoelectricity optical repeater also includes：Logic unit；The OLT transceivers, are additionally operable to be exported to logic unit and examine Signal is surveyed, when the detection signal is signal detection SD signals, detection signal is effective when OLT receivers receive uplink optical signal, It is high level；When the detection signal is dropout LOS signals, detection signal is not when OLT receivers receive uplink optical signal Effectively, it is low level；The logic unit, for when the detection signal for receiving is SD signals and invalid detection signal, indicating ONU transceiver and OLT receivers stop performing the operation for uplink optical signal, are SD signals and inspection in the detection signal for receiving When survey signal is effective, ONU transceiver and OLT receivers is indicated to perform the operation for uplink optical signal；In the detection letter for receiving When number being LOS signals and effective detection signal, ONU transceiver and OLT receivers is indicated to stop performing for uplink optical signal Operation, when the detection signal for receiving is LOS signals and invalid detection signal, indicates ONU transceiver and OLT receivers to perform pin Operation to uplink optical signal.
2. photoelectricity optical repeater as claimed in claim 1, it is characterised in that the photoelectricity optical repeater also includes clock data Recovery unit, clock unit and timing unit again, wherein：
Clock data recovery unit, the downstream electrical signals for receiving ONU transceiver output, and extracted from the downstream electrical signals Clock signal, clock signal is exported to clock unit, and the downstream electrical signals are exported to OLT transceivers；
Clock unit, for according to requirement of the timing unit to timing parameter again, the clock signal to receiving to be processed, obtained To reference clock, and the reference clock is exported to timing unit again；
Timing unit again, the uplink electrical signals for receiving the output of OLT transceivers, using the reference clock for receiving on described Horizontal electrical signal carries out timing again, and the uplink electrical signals after timing again are exported to ONU transceiver.
3. photoelectricity optical repeater as claimed in claim 2, it is characterised in that
The logic unit, is additionally operable to, when the detection signal for receiving is effective, indicate again timing unit to carry out local register Reset, or, when the detection signal for receiving is invalid, indicate again timing unit to reset local register.
4. photoelectricity optical repeater as claimed in claim 1, it is characterised in that the OLT transceivers include：Signal adapter and Light diplexer, wherein, the signal adapter has uplink optical signal receiving port and downlink optical signal emission port；
The smooth diplexer, for being separated to the optical signal for receiving, when uplink optical signal is received, by the up light Signal output is launched to the uplink optical signal receiving port of signal adapter the downlink optical signal from signal adapter is received During the downlink optical signal of port output, by downlink optical signal output；
The signal adapter, for the uplink optical signal that uplink optical signal receiving port is received being carried out into opto-electronic conversion and being put again Exported to ONU transceiver after big reshaping, and the downstream electrical signals that ONU transceiver is exported are carried out after electro-optic conversion through descending Optical signal launch port is exported to light diplexer.
5. photoelectricity optical repeater as claimed in claim 4, it is characterised in that the smooth diplexer be wave-division multiplexer filter or Optical circulator.
6. it is a kind of long away from box, it is characterised in that the length includes away from box：Photoelectricity optical repeater and 1：N couplers, the N is big In 1 positive integer；
The photoelectricity optical repeater, after the downlink optical signal from optical line terminal OLT is carried out reshaping and amplified again Export to 1：N couplers, will be from 1：The uplink optical signal of N couplers carries out reshaping and is exported to OLT after amplifying again；
Described 1：N couplers, for the downlink optical signal of the output of photoelectricity optical repeater to be divided into N roads, and output gives respectively Itself connected N number of optical splitter, and the uplink optical signal that each optical splitter being connected with itself is exported is coupled as rear defeated all the way Go out and give photoelectricity optical repeater；
The photoelectricity optical repeater includes：Optical network unit ONU transceiver and OLT transceivers；The ONU transceiver, for inciting somebody to action Downlink optical signal from OLT carries out opto-electronic conversion and to amplify export after reshaping again to give OLT transceivers, and will be from OLT The uplink electrical signals of transceiver are exported to OLT after carrying out electro-optic conversion；The OLT transceivers, for export ONU transceiver Downstream electrical signals are exported to 1 after carrying out electro-optic conversion：N couplers, and will be from 1：The uplink optical signal of N couplers carries out light Electricity is changed and exported to ONU transceiver after amplifying reshaping again；
The photoelectricity optical repeater also includes：Logic unit；The OLT receivers, are additionally operable to logic unit output detection letter Number, when the detection signal is signal detection SD signals, detection signal receives 1 in OLT receivers：The output of N couplers it is up During optical signal effectively, it is high level, when the detection signal is LOS signals, detection signal does not receive 1 in OLT receivers：N is coupled During the uplink optical signal of device output effectively, it is low level；The logic unit, for receive detection signal be SD signals and When detection signal is invalid, ONU transceiver and OLT receivers is indicated to stop performing the operation for uplink optical signal, what is received When detection signal is SD signals and effective detection signal, ONU transceiver and OLT receivers is indicated to perform for uplink optical signal Operation；When the detection signal for receiving is dropout LOS signals and effective detection signal, ONU transceiver and OLT is indicated to receive Device stops performing the operation for uplink optical signal, when the detection signal for receiving is LOS signals and invalid detection signal, indicates ONU transceiver and OLT receivers perform the operation for uplink optical signal.
7. it is as claimed in claim 6 long away from box, it is characterised in that the length also includes away from box：Current divider and local management list Unit；
The current divider, for the downlink optical signal from OLT to be divided into two-way, exports to local management unit all the way, another Road is exported to the photoelectricity optical repeater, and the uplink optical signal that the photoelectricity optical repeater and local management unit are exported It is forwarded to OLT；
The local management unit, for carrying out parameter configuration to photoelectricity optical repeater according to the downlink optical signal for receiving, with And report local parameter information to OLT.
8. it is as claimed in claim 6 long away from box, it is characterised in that the photoelectricity optical repeater also includes clock and data recovery list First, clock unit and again timing unit, wherein：
Clock data recovery unit, the downstream electrical signals for receiving ONU transceiver output, and extracted from the downstream electrical signals Clock signal, clock signal is exported to clock unit, and the downstream electrical signals are exported to OLT transceivers；
Clock unit, for according to requirement of the timing unit to timing parameter again, the clock signal to receiving to be processed, obtained To reference clock, and the reference clock is exported to timing unit again；
Timing unit again, the uplink electrical signals for receiving the output of OLT transceivers, using the reference clock for receiving on described Horizontal electrical signal carries out timing again, and the uplink electrical signals after timing again are exported to ONU transceiver.
9. as claimed in claim 8 long away from box, it is characterised in that
The logic unit, is additionally operable to, when the detection signal for receiving is effective, indicate again timing unit to carry out local register Reset, or, when the detection signal for receiving is invalid, indicate again timing unit to reset local register.
10. it is as claimed in claim 6 long away from box, it is characterised in that the OLT transceivers include：Signal adapter and light are double News device, wherein, the signal adapter has uplink optical signal receiving port and downlink optical signal emission port；
The smooth diplexer, for being separated to the optical signal for receiving, is receiving from 1：The up light letter of N couplers Number when, the uplink optical signal is exported to the uplink optical signal receiving port of signal adapter, receiving from signal adapter Downlink optical signal emission port output downlink optical signal when, the downlink optical signal is exported to 1：N couplers；
The signal adapter, for the uplink optical signal that uplink optical signal receiving port is received being carried out into opto-electronic conversion and being put again Exported to ONU transceiver after big reshaping, and the downstream electrical signals that ONU transceiver is exported are carried out after electro-optic conversion through descending Optical signal launch port is exported to light diplexer.
11. is as claimed in claim 10 long away from box, it is characterised in that the smooth diplexer is wave-division multiplexer filter or the ring of light Row device.
12. length as described in claim 6-11 is any is away from box, it is characterised in that the length is applied to time division multiplexing tdm away from box Passive optical network PON system in.
13. is a kind of long away from box, it is characterised in that the length includes away from box：First multiplexing demultiplexing device, the second multiplex/demultiplex Device, 1：N couplers and n photoelectricity optical repeater, the N are the positive integer more than 1, and the n is the positive integer more than or equal to 2；
First multiplexing demultiplexing device, for the downlink optical signal from mixed light line terminal H-OLT to be decomposed into m roads Downlink optical signal, and export respectively to m photoelectricity optical repeater, and will be closed from the uplink optical signal of photoelectricity optical repeater H-OLT is sent to as uplink optical signal all the way, wherein, in the downlink optical signal on the m roads, carry per road downlink optical signal The wavelength of light wave is different, and the m is the positive integer more than 1 and less than or equal to n；
The photoelectricity optical repeater, for the downlink optical signal from the first multiplexing demultiplexing device being carried out into reshaping and being put again Exported to the second multiplexing demultiplexing device after big, and the uplink optical signal from the second multiplexing demultiplexing device is carried out into reshaping Exported after amplifying again to the first multiplexing demultiplexing device；
Second multiplexing demultiplexing device, for downlink optical signal all the way will to be combined into from photoelectricity optical repeater downlink optical signal After export to 1：N couplers, and will be from 1：The uplink optical signal of N couplers is decomposed into k roads uplink optical signal, and defeated respectively Go out to k photoelectricity optical repeater, wherein, in the uplink optical signal of the k roads, carry mutual per the wavelength of the light wave of road uplink optical signal Differ, the k is the positive integer more than 1 and less than or equal to n；
Described 1：N couplers, for the downlink optical signal from the second multiplexing demultiplexing device to be divided into N roads, and export respectively to The N number of optical splitter being connected with itself, and by each optical splitter being connected with itself export uplink optical signal be coupled as all the way after Export to the second multiplexing demultiplexing device；
The photoelectricity optical repeater includes：Optical network unit ONU transceiver and OLT transceivers；The ONU transceiver, for inciting somebody to action Downlink optical signal from the first multiplexing demultiplexing device carries out opto-electronic conversion and to amplify export after reshaping again to give OLT transceivers, And exported to the first multiplex/demultiplex after the uplink electrical signals from OLT transceivers are carried out into electro-optic conversion；The OLT is received Hair device, the downstream electrical signals for ONU transceiver to be exported are exported to the second multiplex/demultiplex after carrying out electro-optic conversion, and Uplink optical signal from the second multiplex/demultiplex is carried out into opto-electronic conversion and is exported to ONU transceiver after amplifying reshaping again；
The photoelectricity optical repeater also includes：Logic unit；The OLT receivers, are additionally operable to logic unit output detection letter Number, when the detection signal is signal detection SD signals, it is defeated that detection signal receives the second multiplexing demultiplexing device in OLT receivers During the uplink optical signal for going out effectively, it is high level, when the detection signal is LOS signals, detection signal is not received in OLT receivers To the second multiplexing demultiplexing device output uplink optical signal when effectively, be low level；The logic unit, in reception When detection signal is SD signals and invalid detection signal, ONU transceiver and OLT receivers is indicated to stop performing for up light letter Number operation, when the detection signal for receiving is SD signals and effective detection signal, indicate ONU transceiver and OLT receivers to hold Operation of the hand-manipulating of needle to uplink optical signal；When the detection signal for receiving is dropout LOS signals and effective detection signal, indicate ONU transceiver and OLT receivers stop performing the operation for uplink optical signal, the detection signal for receiving be LOS signals and When detection signal is invalid, ONU transceiver and OLT receivers is indicated to perform the operation for uplink optical signal.
14. is as claimed in claim 13 long away from box, it is characterised in that default under carrying in the photoelectricity optical repeater In the downlink optical signal that the wavelength of the light wave of traveling optical signal and the first multiplexing demultiplexing device send, for carrying the descending light letter Number light wave wavelength it is identical, the default wavelength and for carrying the light wave of uplink optical signal in the photoelectricity optical repeater It is identical for carrying the wavelength of light wave of the uplink optical signal in the uplink optical signal that two multiplexing demultiplexing devices send；
First multiplexing demultiplexing device, the descending light specifically for the downlink optical signal from H-OLT to be decomposed into m roads is believed Number, and respectively exported m roads downlink optical signal to wavelength respectively according to the wavelength of the light wave for carrying each road downlink optical signal The photoelectricity optical repeater of matching；
Second multiplexing demultiplexing device, specifically for will be from 1：The uplink optical signal of N couplers is decomposed into the up light in k roads Signal, and respectively exported k roads uplink optical signal to ripple respectively according to the wavelength of the light wave for carrying each road uplink optical signal The photoelectricity optical repeater of matching long.
15. is as claimed in claim 13 long away from box, it is characterised in that the length also includes away from box：Current divider and local management Unit；
The current divider, for the downlink optical signal from H-OLT to be divided into two-way, exports to the local management list all the way Unit, another road is exported to first multiplexing demultiplexing device, and the up light that first multiplexing demultiplexing device is exported Signal is forwarded to H-OLT；
The local management unit, for entering line parameter to the n photoelectricity optical repeater according to the downlink optical signal for receiving Configuration, and report local parameter information to H-OLT.
16. is as claimed in claim 13 long away from box, it is characterised in that the length also includes away from box：Local management unit and n are individual Current divider, the n current divider is corresponded with n photoelectricity optical repeater；
The current divider, for the downlink optical signal from the first multiplexing demultiplexing device to be divided into two-way, exports to local all the way Administrative unit, another road output gives itself corresponding photoelectricity optical repeater, and will be from smooth electric light corresponding with itself Uplink optical signal after device output is forwarded to the first multiplexing demultiplexing device；
The local management unit, for entering line parameter to the n photoelectricity optical repeater according to the downlink optical signal for receiving Configuration, and report local parameter information to H-OLT.
17. is as claimed in claim 13 long away from box, it is characterised in that the length also includes away from box：N current divider and n sheet Ground administrative unit, the n current divider is corresponded with n photoelectricity optical repeater；The n local manager and n photoelectricity Optical repeater is corresponded；
The current divider, for the downlink optical signal from the first multiplexing demultiplexing device to be divided into two-way, output all the way gives certainly The corresponding photoelectricity optical repeater of body, another road output gives the corresponding local management unit of the photoelectricity optical repeater, and will Uplink optical signal from photoelectricity optical repeater corresponding with itself is forwarded to the first multiplexing demultiplexing device；
The local management unit, for being carried out according to the downlink optical signal pair photoelectricity optical repeater corresponding with itself for receiving Parameter configuration, and report local parameter information to H-OLT.
18. is as claimed in claim 13 long away from box, it is characterised in that the photoelectricity optical repeater also includes clock and data recovery Unit, clock unit and timing unit again, wherein：
Clock data recovery unit, the downstream electrical signals for receiving ONU transceiver output, and extracted from the downstream electrical signals Clock signal, clock signal is exported to clock unit, and the downstream electrical signals are exported to OLT transceivers；
Clock unit, for according to requirement of the timing unit to timing parameter again, the clock signal to receiving to be processed, obtained To reference clock, and the reference clock is exported to timing unit again；
Timing unit again, the uplink electrical signals for receiving the output of OLT transceivers, using the reference clock for receiving on described Horizontal electrical signal carries out timing again, and the uplink electrical signals after timing again are exported to ONU transceiver.
19. is as claimed in claim 18 long away from box, it is characterised in that
The logic unit, is additionally operable to, when the detection signal for receiving is effective, indicate again timing unit to carry out local register Reset, or, when the detection signal for receiving is invalid, indicate again timing unit to reset local register.
20. is as claimed in claim 13 long away from box, it is characterised in that the OLT transceivers include：Signal adapter and light are double News device, wherein, the signal adapter has uplink optical signal receiving port and downlink optical signal emission port；
The smooth diplexer, for being separated to the optical signal for receiving, is receiving from the second multiplexing demultiplexing device During uplink optical signal, the uplink optical signal is exported to the uplink optical signal receiving port of signal adapter, received from letter During the downlink optical signal of the downlink optical signal emission port output of number converter, by the downlink optical signal export to the second multiplexing/ Demultiplexer；
The signal adapter, for the uplink optical signal that uplink optical signal receiving port is received being carried out into opto-electronic conversion and being put again Exported to ONU transceiver after big reshaping, and the downstream electrical signals that ONU transceiver is exported are carried out after electro-optic conversion through descending Optical signal launch port is exported to light diplexer.
21. length as described in claim 13-20 is any is away from box, it is characterised in that the length is applied to Wave time division and mixes away from box In the passive optical network PON system of conjunction multiplexing.
Length described in a kind of 22. utilization claims 6 is away from box to the processing method of uplink optical signal, it is characterised in that the side Method includes：
1：N couplers when the uplink optical signal from coupled each optical splitter is received, by each optical splitter export it is upper Traveling optical signal is coupled as exporting afterwards all the way gives photoelectricity optical repeater；
Photoelectricity optical repeater is to 1：The uplink optical signal of N couplers output carries out reshaping and is exported to OLT after amplifying again.
Length described in a kind of 23. utilization claims 6 is away from box to the processing method of downlink optical signal, it is characterised in that the side Method includes：
Photoelectricity optical repeater is carried out again the downlink optical signal when the downlink optical signal from optical line terminal OLT is received Shaping and export to 1 after amplifying again：N couplers；
1：The downlink optical signal of the output of photoelectricity optical repeater is divided into N roads by N couplers, and output gives what itself was connected respectively N number of optical splitter.
Length described in a kind of 24. utilization claims 13 is away from box to the processing method of uplink optical signal, it is characterised in that the side Method includes：
1：N couplers when the uplink optical signal from coupled each optical splitter is received, by the up light of each optical splitter Signal is coupled as exporting afterwards all the way to the second multiplexing demultiplexing device；
Second multiplexing demultiplexing device is by 1：K roads uplink optical signal is decomposed into the uplink optical signal of N couplers output, and respectively Export to k photoelectricity optical repeater, wherein, in the uplink optical signal of the k roads, carry the wavelength of the light wave per road uplink optical signal Different, the k is the positive integer more than 1 and less than or equal to n；
K photoelectricity optical repeater carries out reshaping and amplifies again to the uplink optical signal of the second multiplexing demultiplexing device output respectively After export to the first multiplexing demultiplexing device；
The uplink optical signal that k photoelectricity optical repeater is exported is combined into uplink optical signal all the way by the first multiplexing demultiplexing device, and defeated Go out to H-OLT.
Length described in a kind of 25. utilization claims 13 is away from box to the processing method of downlink optical signal, it is characterised in that the side Method includes：
The downlink optical signal is decomposed into m by the first multiplexing demultiplexing device when the downlink optical signal from H-OLT is received The downlink optical signal on road, and export respectively to m photoelectricity optical repeater, wherein, in the downlink optical signal on the m roads, carry every The wavelength of the light wave of road downlink optical signal is different, and the m is the positive integer more than 1 and less than or equal to n；
M photoelectricity optical repeater carries out reshaping and amplifies again to the downlink optical signal of the first multiplexing demultiplexing device output respectively After export to the second multiplexing demultiplexing device；
The downlink optical signal on the m roads that the second multiplexing demultiplexing device will be received is combined into downlink optical signal all the way and exports to 1：N couplings Clutch；
1：The downlink optical signal that second multiplexing demultiplexing device is exported is divided into N roads by N couplers, and output gives itself phase respectively N number of optical splitter even.
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