CN214228253U - Special ground detection system for transmitting-receiving integrated optical module - Google Patents
Special ground detection system for transmitting-receiving integrated optical module Download PDFInfo
- Publication number
- CN214228253U CN214228253U CN202120451079.5U CN202120451079U CN214228253U CN 214228253 U CN214228253 U CN 214228253U CN 202120451079 U CN202120451079 U CN 202120451079U CN 214228253 U CN214228253 U CN 214228253U
- Authority
- CN
- China
- Prior art keywords
- optical
- module
- transceiver
- splitter
- input end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 291
- 238000001514 detection method Methods 0.000 title claims abstract description 17
- 238000012360 testing method Methods 0.000 claims abstract description 54
- 238000001228 spectrum Methods 0.000 claims abstract description 25
- 239000013307 optical fiber Substances 0.000 claims abstract description 19
- 238000004891 communication Methods 0.000 claims description 28
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 8
- 238000006243 chemical reaction Methods 0.000 description 11
- 230000008033 biological extinction Effects 0.000 description 6
- 230000035945 sensitivity Effects 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 230000003595 spectral effect Effects 0.000 description 4
- 230000001629 suppression Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Images
Landscapes
- Optical Communication System (AREA)
Abstract
The utility model provides a receive and dispatch optical module's special ground detecting system. The system comprises an optical module test board for detachably mounting the to-be-tested transceiver optical module, a first optical splitter for dividing one path into N paths and an upper computer; the optical input end of the first optical splitter is connected with the optical emission port of the to-be-tested transceiver optical module, the N optical output ends of the first optical splitter are connected with the N output channel testing devices in a one-to-one correspondence mode, the first output channel testing devices are first optical power meters, and the optical input end of each first optical power meter is connected with the first optical output end of the corresponding first optical splitter; the second output channel test equipment is a spectrum analyzer, the optical input end of the spectrum analyzer is connected with the second optical output end of the first spectrum analyzer, and the spectrum analyzer is connected with an upper computer. The ground detection process of the receiving and transmitting integrated optical module is integrated, a plurality of performance index tests can be carried out simultaneously, repeated access of optical fibers is not needed, pollution to the end faces of the optical fibers is effectively avoided, and the use efficiency of test equipment is improved.
Description
Technical Field
The utility model belongs to the technical field of optical communication, specifically be a special ground detecting system who relates to a receiving and dispatching optical module.
Background
The transceiver optical module consists of an optoelectronic device, an internal circuit and a transceiver optical interface, and the application of the optical module accelerates the development of the field of optical fiber communication. In order to ensure the production quality of the transceiver module, the key indexes of the satellite-borne transceiver module need to be tested. The key indexes include: the test items of bit error rate, average transmitting power, extinction ratio, center wavelength, spectral width @ -20dB, side mode suppression ratio, receiving sensitivity, saturated optical power and the like. The existing test mode is as follows: the test to a certain index needs to be connected with the test equipment independently, so that the test procedure is complicated in production, the resources such as testers, equipment and sites are wasted, the production cost is increased, and the test efficiency is reduced.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects existing in the prior art, the utility model aims to provide a special ground detection system of a receiving and dispatching integrated optical module.
In order to achieve the above object of the present invention, the present invention provides a special ground detection system for a transceiver module, which comprises an optical module test board for detachably mounting a transceiver module to be tested, a first optical splitter for dividing one path into N paths, and an upper computer; the optical input end of the first optical splitter is connected with the optical emission port of the to-be-tested transceiver optical module, the N optical output ends of the first optical splitter are connected with the N output channel testing devices in a one-to-one correspondence manner, and N is a positive integer greater than or equal to 2; the first output channel test equipment is a first optical power meter, and an optical input end of the first optical power meter is connected with a first optical output end of the first optical splitter; the second output channel test equipment is a spectrum analyzer, the optical input end of the spectrum analyzer is connected with the second optical output end of the first spectrum analyzer, and the upper computer communication end of the spectrum analyzer is connected with the first signal end of the upper computer.
The technical scheme is as follows: the ground detection process of the receiving and transmitting integrated optical module is integrated, the system can simultaneously measure the output average optical power, the output optical signal center wavelength, the output optical signal spectrum width and the side mode rejection ratio, the repeated access of an optical path (such as an optical fiber) is not needed, the pollution of the end surface of the optical fiber is effectively avoided, the use efficiency of test equipment is enhanced, the receiving and transmitting integrated optical module is detachably mounted, and the batch ground detection of the optical modules is conveniently realized; and the first optical splitter divides the light emission port of the optical module into N paths, so that the N paths of channels can be conveniently measured at the same time, and the performance index to be tested can be conveniently expanded.
In a preferred embodiment of the present invention, the optical module test board is provided with a first data communication interface for connecting a data communication terminal of the transceiver optical module to be tested; when N is larger than 2, the third output channel testing equipment comprises a digital sampler and an error code detector, wherein the optical input end of the digital sampler is connected with the third optical output end of the first optical splitter, the data output end of the digital sampler is connected with the test signal input end of the error code detector, the data communication interface of the error code detector is connected with the first data communication interface, the upper computer communication end of the error code detector is connected with the second signal end of the upper computer, and the upper computer communication end of the digital sampler is connected with the third signal end of the upper computer.
The technical scheme is as follows: the extinction ratio of the output optical signal of the transceiver-integrated optical module to be tested can be tested while the first output channel testing device and the second output channel testing device are used for measuring through the error code meter and the digital sampler, the difference between the data signal sent to the transceiver-integrated optical module to be tested and the optical signal output after the data signal is subjected to electro-optical conversion through the transceiver-integrated optical module to be tested can be analyzed through the error code meter, the error rate of the electro-optical conversion part of the transceiver-integrated optical module to be tested is obtained based on the difference, and the accuracy of the error rate of the transceiver-integrated optical module to be tested is evaluated.
The present invention provides a preferable embodiment, further comprising a first variable optical attenuator, wherein the optical input end of the first variable optical attenuator is connected to the third optical output end of the first optical splitter, and the optical output end of the first variable optical attenuator is connected to the optical input end of the digital sampler.
The technical scheme is as follows: the first variable optical attenuator can adjust the light power of the input digital sampler and adapt to the input light power range of the digital sampler.
The utility model discloses an in a preferred embodiment, when N is greater than 3, still include broadband light source, second variable optical attenuator, divide the second optical divider of two routes all the way, the optical fiber coupler that two routes closed all the way, and the second optical power meter, broadband light source's the optical output end and the optical input end of second variable optical attenuator are connected, and the optical output end and the optical input end of second optical divider of second variable optical attenuator are connected, and the first optical output end and the optical input end of second optical power meter of second optical divider are connected, and the second optical output end and the first optical input end of optical fiber coupler of second optical divider are connected, and the second optical input end and the fourth optical output end of first optical divider of optical fiber coupler are connected, and optical fiber coupler's output and the optical receiving port of the integrative optical module of awaiting measuring receiving and dispatching are connected.
The technical scheme is as follows: the second variable optical attenuator can be used for adjusting the light power of a broadband light source input into a light receiving port of the to-be-tested transceiver optical module, the light power input into the to-be-tested transceiver optical module can be obtained through the light power measured by the second light power meter and the splitting ratio of the second optical splitter, and performance indexes such as the saturation light power, the sensitivity and the error rate of the to-be-tested transceiver optical module can be conveniently tested by being matched with third output channel testing equipment. In the process of testing the error rate, the error code meter sends a digital signal to the to-be-tested transceiver optical module, the to-be-tested transceiver optical module converts the digital signal into a corresponding optical signal to be transmitted, the optical fiber coupler realizes self-receiving of the transmitted optical signal of the to-be-tested transceiver optical module, the to-be-tested transceiver optical module converts the self-received optical signal into an electrical signal to be output to the error code meter, and the error code meter compares the received electrical signal with the transmitted electrical signal to obtain the integral error rate of the electro-optic conversion and the electro-optic conversion of the to-be-tested transceiver optical module.
In a preferred embodiment of the present invention, all or part of the optical connection path is connected by an optical fiber.
The technical scheme is as follows: the connection implementation is convenient, and the test accuracy is improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a system block diagram of a preferred embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, or may be connected between two elements through an intermediate medium, or may be directly connected or indirectly connected, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
The utility model provides a special ground detection system of a transceiver optical module, in a preferred embodiment, as shown in figure 1, the system comprises an optical module test board for detachably mounting a transceiver optical module to be tested, a first optical splitter for dividing one path into N paths and an upper computer; the optical input end of the first optical splitter is connected with the optical emission port of the to-be-tested receiving and transmitting all-in-one optical module, N optical output ends of the first optical splitter are connected with N output channel testing devices in a one-to-one correspondence mode, and N is a positive integer greater than or equal to 2; the first output channel test equipment is a first optical power meter, and an optical input end of the first optical power meter is connected with a first optical output end of the first optical splitter; the second output channel test equipment is a spectrum analyzer, the optical input end of the spectrum analyzer is connected with the second optical output end of the first spectrum analyzer, and the upper computer communication end of the spectrum analyzer is connected with the first signal end of the upper computer.
In this embodiment, preferably, the optical module test board is provided with a mounting mechanism for mounting the transceiver optical module to be tested, and the mounting mechanism is preferably, but not limited to, a groove matched with the shape of the transceiver optical module, or a locking mechanism and a pressing plate structure as disclosed in chinese patent with publication number CN203881810U, or a female pin socket in mating connection with the pin header on the optical module to be tested. Preferably, the first optical splitter equally divides the input optical signal by N. Preferably, all optical signal connection paths are connected by optical fibers. The upper computer is preferably but not limited to a PC computer, and analysis software with various performance indexes is loaded on the PC computer, and the analysis software is existing software, which is not an improvement point of the present application and is not described herein again.
In this embodiment, the optical module test board is further provided with a power interface. Preferably, the system also comprises a first power supply connected with the power interface and a second power supply for supplying power to the upper computer, the error code detector and the spectrum analyzer, wherein the first power supply provides 3.3V direct current, and the second power supply provides 220V alternating current.
In an application scenario of this embodiment, N is 4, a splitting ratio of two channels of the first splitter is 1:1:1:1, and tests such as a center wavelength, a 20dB spectral width, and a side-mode suppression ratio of an optical signal output by the optical module are performed simultaneously. The specific process is as follows: turning on a first power supply and a second power supply, and turning on switches of the upper computer, the first optical power meter, the optical module test board and the optical spectrum analyzer; selecting the laser type in the spectrum analyzer to be consistent with the laser type of the to-be-tested transceiver optical module, setting the scanning width of the spectrum analyzer, obtaining the central wavelength, the 20dB spectral width and the side mode suppression ratio of the to-be-tested transceiver optical module by using the automatic measurement function of the spectrum analyzer, and transmitting the measurement result to an upper computer for displaying.
In a preferred embodiment, the optical module test board is provided with a first data communication interface connected with a data communication end of a to-be-tested transceiver optical module; when N is greater than 2, as shown in fig. 1, the third output channel testing device includes a digital sampler and an error code detector, an optical input end of the digital sampler is connected to a third optical output end of the first optical splitter, a data output end of the digital sampler is connected to a test signal input end of the error code detector, a data communication interface of the error code detector is connected to the first data communication interface, an upper computer communication end of the error code detector is connected to a second signal end of the upper computer, and an upper computer communication end of the digital sampler is connected to a third signal end of the upper computer.
In the present embodiment, the first data communication interface is preferably, but not limited to, a UART interface, including four pins RX-, RX +, TX-, and TX +. Preferably, the to-be-tested transceiver optical module is provided with six pins, namely, an RX pin, an RX + pin, a TX + pin, a GND pin and a VCC pin, the optical module test board is provided with 6 corresponding pin sockets, the first data communication interface is connected with the pin sockets through PCB wiring, and the first data communication interface is connected with the to-be-tested transceiver optical module after the pin socket of the to-be-tested transceiver optical module is inserted into the pin socket.
In this embodiment, the error detector is preferably, but not limited to, an existing product of a high-speed serial error detector with model number SL3120A, and the test signal input terminal of the error detector is preferably, but not limited to, a TRIGGER terminal. Preferably, the digital sampler may include an electro-optical conversion unit, where the electro-optical conversion unit converts an optical signal output by the third optical output terminal of the first optical splitter into a corresponding electrical signal and transmits the electrical signal to a test signal input terminal of the error detector; preferably, the digital sampler does not perform a mere photoelectric conversion, but converts the input optical signal into an electrical signal, which may be an eye diagram signal of the optical signal, and the digital sampler is preferably, but not limited to, 86100D of the existing model number Kesight. The upper computer is connected with the error code detector and the spectrum analyzer through GPIB cables.
In this embodiment, as shown in fig. 1, the optical sampling device further includes a first variable optical attenuator, an optical input end of the first variable optical attenuator is connected to the third optical output end of the first optical splitter, and an optical output end of the first variable optical attenuator is connected to an optical input end of the digital sampler. Preferably, the digital sampler further comprises a fourth power supply for supplying power to the digital sampler, and the fourth power supply provides 220V alternating current.
In an application scenario of this embodiment, tests of average transmission power, bit error rate and extinction ratio of the optical output channel of the transceiver optical module to be tested, and center wavelength, 20dB spectral width and side mode suppression ratio of the output optical signal of the optical module can be performed. After the first power supply, the second power supply and the fourth power supply are turned on, and the upper computer, the first optical power meter, the optical module test board, the switch of the optical spectrum analyzer, the digital sampler and the error code instrument are turned on, the steps before the test of other performance indexes except the error rate and the extinction ratio of the optical output channel of the transceiver optical module to be tested are referred to, and are not repeated herein.
In this application scenario, the specific test process of the bit error rate is as follows: according to the technical indexes of the to-be-tested transceiving optical module, setting the speed, the code pattern, the level and the like of an error code meter, wherein the error code meter transmits a reference DATA signal (an electric signal) to the to-be-tested transceiving optical module through a DATA communication interface (DATA _ OUT +, DATA _ OUT-) and a first DATA communication interface of the error code meter, the to-be-tested transceiving optical module converts the reference DATA signal into a corresponding optical signal and transmits the optical signal to a first optical splitter through an optical output port of the to-be-tested transceiving optical module, a third optical output end of the first optical splitter outputs a part of the optical signal after splitting to a first adjustable optical attenuator, the first adjustable optical attenuator adjusts the amplitude range of the optical signal to the allowable input range of a digital sampler, and the error code meter compares the value of the signal output by the digital sampler with the reference DATA signal after the signal is divided by the splitting ratio of a third optical output end of the first optical splitter to obtain an error rate, and transmitting the error rate image and the result to an upper computer for displaying, and recording the error rate of the optical module when the error rate displayed by the upper computer is stable. The error rate is the error rate of the electro-optical conversion part of the to-be-tested transceiver optical module and is used for evaluating the accuracy of the electro-optical conversion of the to-be-tested transceiver optical module.
In the application scenario, the testing process of the extinction ratio is as follows: setting the speed, the code pattern, the level and the like of an error code meter according to the technical indexes of the to-be-tested transceiver optical module, and setting the wavelength of the second variable optical attenuator to be the same as the wavelength of the to-be-tested transceiver optical module; the digital sampler has no light input, and the digital sampler is calibrated after the digital sampler is started and preheated; the second adjusting optical attenuator makes the optical power input to the digital sampler be in the input optical power range recommended by the equipment; opening a corresponding channel button on the digital sampler and selecting an optical filter with a corresponding speed according to the ground detection requirement; selecting 'extraction Ratio' on the digital sampler, and recording the Extinction Ratio of the transmitting-receiving all-in-one optical module to be tested.
In a preferred embodiment, as shown in fig. 1, when N is greater than 3, the optical transceiver module further includes a broadband light source, a second variable optical attenuator, a second optical splitter that splits two paths of light, a fiber coupler that combines two paths of light into one path of light, and a second optical power meter, where an optical output end of the broadband light source is connected to an optical input end of the second variable optical attenuator, an optical output end of the second variable optical attenuator is connected to an optical input end of the second optical splitter, a first optical output end of the second optical splitter is connected to an optical input end of the second optical power meter, a second optical output end of the second optical splitter is connected to a first optical input end of the fiber coupler, a second optical input end of the fiber coupler is connected to a fourth optical output end of the first optical splitter, and an output end of the fiber coupler is connected to an optical receiving port of the transceiver module to be tested.
In this embodiment, the splitting ratio of the second optical splitter is preferably 1: 1. Preferably, the broadband light source further comprises a third power supply for supplying power to the broadband light source, and the third power supply provides 5V direct current.
In an application scenario of the present embodiment, the receiving sensitivity and the saturation optical power of the transceiver module to be tested are tested. The test process of the receiving sensitivity is as follows: turning on a first power supply, a second power supply, a third power supply and a fourth power supply, and turning on switches of an upper computer, an error code meter, an optical module test board, a broadband light source, a second optical power meter and a digital sampler; setting the speed, code pattern, level and the like of an error code meter according to the technical index of the transmitting-receiving integrated optical module to be tested; setting the wavelength of a second variable optical attenuator and a second optical power meter to be the same as the wavelength of the to-be-tested transceiver optical module; calibrating a broadband light source; by debugging the first optical attenuator, the minimum output optical power which can keep the error rate of the error code meter stable is found, namely the receiving sensitivity value of the transceiver optical module to be tested is obtained, and the maximum output optical power which can keep the error rate of the error code meter stable is found, namely the saturated optical power of the transceiver optical module to be tested is obtained.
In an application scenario of this embodiment, an error rate of an electro-optical conversion and an optical-to-electrical conversion of a transceiver module to be tested is tested, in the process of testing the error rate, an error detector sends a digital signal to the transceiver module to be tested, the transceiver module to be tested converts the digital signal into a corresponding optical signal for transmission, self-reception of a transmission optical signal of the transceiver module to be tested is achieved through an optical fiber coupler, the transceiver module to be tested converts the self-received optical signal into an electrical signal and outputs the electrical signal to the error detector, and the error detector compares the received electrical signal with the transmitted electrical signal to obtain the transceiver module to be tested.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (8)
1. A special ground detection system for a transceiver optical module is characterized by comprising an optical module test board for detachably mounting the transceiver optical module to be tested, a first optical splitter for dividing one path into N paths and an upper computer;
the optical input end of the first optical splitter is connected with the optical emission port of the to-be-tested transceiver optical module, the N optical output ends of the first optical splitter are connected with the N output channel testing devices in a one-to-one correspondence manner, and N is a positive integer greater than or equal to 2;
the first output channel test equipment is a first optical power meter, and an optical input end of the first optical power meter is connected with a first optical output end of the first optical splitter;
the second output channel test equipment is a spectrum analyzer, the optical input end of the spectrum analyzer is connected with the second optical output end of the first spectrum analyzer, and the upper computer communication end of the spectrum analyzer is connected with the first signal end of the upper computer.
2. The special ground detection system for a transceiver module as claimed in claim 1, wherein said optical module test board is provided with a first data communication interface for connecting a data communication terminal of a transceiver module to be tested;
when N is larger than 2, the third output channel testing equipment comprises a digital sampler and an error code detector, wherein the optical input end of the digital sampler is connected with the third optical output end of the first optical splitter, the data output end of the digital sampler is connected with the test signal input end of the error code detector, the data communication interface of the error code detector is connected with the first data communication interface, the upper computer communication end of the error code detector is connected with the second signal end of the upper computer, and the upper computer communication end of the digital sampler is connected with the third signal end of the upper computer.
3. The special ground detection system for a transceiver module as recited in claim 2, further comprising a first variable optical attenuator, an optical input of said first variable optical attenuator being connected to a third optical output of said first optical splitter, and an optical output of said first variable optical attenuator being connected to an optical input of said digital sampler.
4. A special ground detection system of transceiver integrated optical module as claimed in one of claims 1-3, it is characterized in that when N is more than 3, the optical fiber coupler also comprises a broadband light source, a second variable optical attenuator, a second optical splitter for splitting one path into two paths, and an optical fiber coupler for combining two paths into one path, and the optical output end of the broadband light source is connected with the optical input end of a second variable optical attenuator, the optical output end of the second variable optical attenuator is connected with the optical input end of a second optical splitter, the first optical output end of the second optical splitter is connected with the optical input end of a second optical power meter, the second optical output end of the second optical splitter is connected with the first optical input end of an optical fiber coupler, the second optical input end of the optical fiber coupler is connected with the fourth optical output end of the first optical splitter, and the output end of the optical fiber coupler is connected with the optical receiving port of the to-be-tested receiving and transmitting integrated optical module.
5. The special ground detection system for transceiver module as claimed in claim 4, wherein all or part of the optical connection path is connected by optical fiber.
6. The special ground detection system for a transceiver module as claimed in claim 5, wherein said optical module test board further comprises a power interface.
7. The special ground detection system for a transceiver module as recited in claim 6, further comprising a first power source connected to said power interface, a second power source for powering the host computer, the error detector and the spectrum analyzer, a third power source for powering the broadband light source, and a fourth power source for powering the digital sampler.
8. The special ground detection system for transceiver module as claimed in claim 7, wherein said first power supply provides 3.3V dc, said second power supply provides 220V ac, said third power supply provides 5V dc, and said fourth power supply provides 220V ac.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120451079.5U CN214228253U (en) | 2021-03-02 | 2021-03-02 | Special ground detection system for transmitting-receiving integrated optical module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120451079.5U CN214228253U (en) | 2021-03-02 | 2021-03-02 | Special ground detection system for transmitting-receiving integrated optical module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214228253U true CN214228253U (en) | 2021-09-17 |
Family
ID=77692889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120451079.5U Active CN214228253U (en) | 2021-03-02 | 2021-03-02 | Special ground detection system for transmitting-receiving integrated optical module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214228253U (en) |
-
2021
- 2021-03-02 CN CN202120451079.5U patent/CN214228253U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105606890B (en) | A kind of light wave element frequency response characteristic parameter measuring apparatus | |
| US8138778B1 (en) | Apparatus for high density low cost automatic test applications | |
| CN108923850B (en) | Parallel multi-channel optical module testing device for 40Gbs, 100Gbs and 120Gbs | |
| CN104898037A (en) | Test apparatus, calibration device, calibration method and test method | |
| CA2298338C (en) | A cable testing apparatus | |
| CN216751765U (en) | Device for evaluating transceiving performance parameters of optical module through multi-channel test | |
| US8508237B2 (en) | Network analyzer calibrator having electrical and electrooptical components | |
| CN214228253U (en) | Special ground detection system for transmitting-receiving integrated optical module | |
| CN110068784A (en) | On-line self-diagnosis and System with Real-Time, method and light wave component analysis instrument | |
| CN112688731A (en) | Multichannel TEC quick temperature change system | |
| US8103164B2 (en) | High frequency noise measurement board | |
| CN117129828A (en) | ATE test device for optical transceiver chip | |
| CN209767539U (en) | Device for generating test signal and test system | |
| CN110058099A (en) | A kind of automatic rapid measurement device of electrooptic modulator frequency response and method | |
| CN114414993B (en) | Method for testing frequency response of chip of electro-optical intensity modulator | |
| CN115333617A (en) | Multichannel optical module evaluation board and optical module test system | |
| CN213693706U (en) | Multichannel TEC temperature change system | |
| CN110057546A (en) | A kind of low cost simple light eye figure measurement method for extinction ratio and system | |
| CN110174569B (en) | Measuring device for phase response consistency of high-speed photoelectric detector | |
| CN208353343U (en) | Four road integrated laser receiver Performance Test Systems | |
| CN114401042B (en) | Characteristic measurement and analysis system for visible light communication device | |
| CN217469958U (en) | Optical module wavelength test system | |
| Debie et al. | Improved error correction technique for on-wafer lightwave measurements of photodetectors | |
| CN110365403A (en) | A kind of Terahertz Broad-band Modulated Signal measuring device and method | |
| CN215897731U (en) | Single-fiber four-way Combopon OLT optical module test system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 401120 39-1, Building 1, No. 64, Middle Huangshan Avenue, Yubei District, Chongqing Patentee after: China Star Network Application Co.,Ltd. Address before: 618 Liangjiang Avenue, Longxing Town, Yubei District, Chongqing Patentee before: Dongfanghong Satellite Mobile Communication Co.,Ltd. |
|
| CP03 | Change of name, title or address |