CN205982747U - Optical transceiver - Google Patents

Abstract

An embodiment of the utility model provides an optical transceiver, this optical transceiver includes body, two laser emitter, two laser receiver, optic fibre adapter and corresponding light filter. The body is internally provided with a cavity, and the body is provided with a mounting hole communicated with the cavity so as to mount a laser transmitter, a laser receiver and an optical fiber adapter. The optical filter enables the light with different wavelengths emitted by the two laser transmitters to be transmitted to the optical fiber adapter, and enables the light with different wavelengths received by the optical fiber adapter to be transmitted to the corresponding laser receiver. The longitudinal central axes of the two laser transmitters, the two laser receivers and the optical fiber adapter are positioned in the same plane. In the optical transceiver, light propagates in the same two-dimensional plane instead of the three-dimensional plane, and corresponding devices can be arranged in the same plane instead of being distributed in the three-dimensional space. Therefore, the volume of the optical transceiver can be made smaller and thinner.

Description

an optical transceiver

technical field

The utility model relates to the field of optical communication, in particular to an optical transceiver.

Background technique

With the application of optical fiber network becoming more and more popular, especially the gradual implementation of fiber access (FTTH, Fiber To The Home) projects around the world, as well as point-to-point data transmission, especially the promotion of triple play, and fiber-to-the-home network from EPON and GPON are upgraded to the next-generation fiber-to-the-home network (XGPON), and there is a mixed networking situation. The demand for single-fiber four-way components in the market is also increasing, especially for a single-fiber with a narrow interval between two wavelengths. Four-way components. For example, with the vigorous development of high-bandwidth services, many operators have chosen to upgrade from GPON to XG-PON1 to cope with the increasingly urgent bandwidth pressure.

The traditional upgrade solution is an external multiplexing speed-up solution, that is, an external multiplexing device is used to multiplex the optical signals of GPON and XG-PON1 into the same ODN network. However, the external multiplexing speed-up solution needs to add multiple devices, which leads to a series of problems in the upgrade solution, such as high construction cost, large space occupation in the equipment room, complicated fiber optic wiring, and difficult operation and maintenance.

In order to solve the above problems, it is necessary to integrate the optical transceiver modules of GPON and XG-PON1 into the same module. In such a module, the optical transceiver component needs to be four-way, and its package size must be small enough to meet the international standard size requirements of XFP or SFP.

Utility model content

The present application provides an optical transceiver capable of transmitting and receiving light of four wavelengths and having a smaller and thinner volume.

According to the first aspect, an embodiment provides an optical transceiver, the optical transceiver includes a body, a first laser transmitter, a second laser transmitter, a first laser receiver, a second laser receiver, and an optical fiber adapter , the first filter, the second filter, the third filter and the fourth filter. A cavity is formed inside the body, and the body is provided with a first mounting hole, a second mounting hole, a third mounting hole, a fourth mounting hole and a fifth mounting hole, the first mounting hole, the second mounting hole, the third mounting hole , the fourth mounting hole and the fifth mounting hole communicate with the cavity. The first laser transmitter is installed in the first installation hole, the second laser transmitter is installed in the second installation hole, the first laser receiver is installed in the third installation hole, and the second laser receiver is installed in the fourth installation hole Inside, the fiber optic adapter is installed in the fifth mounting hole. The first optical filter is installed in the cavity, and transmits the light of the first wavelength emitted by the first laser transmitter to the fiber adapter, and reflects the light of the second wavelength emitted by the second laser transmitter to the fiber adapter. The second optical filter, the third optical filter and the fourth optical filter are installed in the cavity, and the second optical filter reflects the light of the third wavelength and the light of the fourth wavelength in the light incident by the fiber optic adapter to the first optical filter. Three optical filters, the third optical filter transmits the light of the third wavelength to the first laser receiver and reflects the light of the fourth wavelength to the fourth optical filter, and the fourth optical filter transmits the light of the fourth wavelength to the second laser receiver. The longitudinal central axes of the first laser transmitter, the second laser transmitter, the first laser receiver, the second laser receiver and the fiber optic adapter are located in the same plane.

In some embodiments of the present invention, the second optical filter is disposed between the optical fiber adapter and the first optical filter, and transmits light of the first wavelength and light of the second wavelength to the optical fiber adapter.

In the optical transceiver of the embodiment of the present invention, the light propagates in the same two-dimensional plane instead of in the three-dimensional plane. The first laser emitter, the second laser emitter, the first laser receiver, the second laser The receiver and the fiber optic adapter may be arranged in the same plane (ie their longitudinal central axes are in the same plane) instead of being distributed in three-dimensional space. Therefore, the volume of the optical transceiver can be made smaller and thinner, so as to meet the international standard size requirements of XFP or SFP.

Description of drawings

FIG. 1 is a perspective view of an optical transceiver according to an embodiment of the present invention;

Fig. 2 is a three-dimensional exploded schematic diagram of an embodiment of the utility model;

Fig. 3 is a schematic cross-sectional view of an embodiment of the utility model;

Fig. 4 is a cross-sectional exploded schematic diagram of an embodiment of the present invention.

detailed description

The utility model will be described in further detail below through specific embodiments in conjunction with the accompanying drawings.

1 to 4, in some embodiments of the present invention, an optical transceiver may include a body 1, a first laser transmitter 2, a second laser transmitter 3, a first laser receiver 4, a second laser Receiver 5 and fiber optic adapter 6.

Referring to FIG. 4 , a cavity 20 is formed inside the body 1 . The body 1 is also provided with a first mounting hole 11 , a second mounting hole 12 , a third mounting hole 13 , a fourth mounting hole 14 and a fifth mounting hole 15 . The first mounting hole 11, the second mounting hole 12, the third mounting hole 13, the fourth mounting hole 14, and the fifth mounting hole 15 communicate with the cavity 20, so that light can be emitted from devices (hereinafter referred to as One or more of the components described in detail) is emitted and propagates in the cavity and enters another one or more of the devices mounted in the mounting holes. In some embodiments, the first mounting hole 11 , the second mounting hole 12 , the third mounting hole 13 , the fourth mounting hole 14 and the fifth mounting hole 15 may be arranged around the cavity 20 . In some embodiments, the longitudinal central axes of the first mounting hole 11 , the second mounting hole 12 , the third mounting hole 13 , the fourth mounting hole 14 and the fifth mounting hole 15 may lie in the same plane. For example, in some embodiments, the first mounting hole 11, the second mounting hole 12, the third mounting hole 13, the fourth mounting hole 14 and the fifth mounting hole 15 can be cylindrical, and the longitudinal direction of these cylindrical mounting holes The central axes can be in the same plane. The "longitudinal" mentioned here may refer to the mounting direction of devices mounted in these mounting holes.

The first laser emitter 2 may be installed in the first installation hole 11 . For example, in some embodiments, the first laser emitter 2 can be installed in the first installation hole 11 by welding, adhesive bonding, screw connection, buckle connection or other suitable connection methods. The first laser emitter 2 can emit light with a first wavelength.

The second laser emitter 3 may be installed in the second installation hole 12 . For example, in some embodiments, the second laser emitter 3 can be installed in the second installation hole 12 by welding, adhesive bonding, screw connection, buckle connection or other suitable connection methods. The second laser emitter 3 can emit light with a second wavelength.

The first laser receiver 4 may be installed in the third installation hole 13 . For example, in some embodiments, the first laser receiver 4 can be installed in the third installation hole 13 by welding, adhesive bonding, screw connection, buckle connection or other suitable connection methods. The first laser receiver 4 can receive light having a third wavelength.

The second laser receiver 5 may be installed in the fourth installation hole 14 . For example, in some embodiments, the second laser receiver 5 can be installed in the fourth installation hole 14 by welding, adhesive bonding, screw connection, buckle connection or other suitable connection methods. The second laser receiver 5 can receive light having a fourth wavelength.

The fiber optic adapter 6 can be installed in the fifth installation hole 15 . For example, in some embodiments, the optical fiber adapter 6 can be installed in the fifth installation hole 15 by welding, adhesive bonding, screw connection, buckle connection or other suitable connection methods. The fiber optic adapter 6 can be connected to an external optical fiber, so that the light from the first laser transmitter 2 or the second laser transmitter 3 is sent to the external optical fiber, or the light from the outside is sent to the first laser receiver 4 or the second laser receiver 4. Two laser receivers 5 .

In the embodiment of the present utility model, the optical transceiver may further include a first optical filter 7 , a second optical filter 8 , a third optical filter 9 and a fourth optical filter 10 .

Referring to FIG. 3 and FIG. 4 , the first optical filter 7 , the second optical filter 8 , the third optical filter 9 and the fourth optical filter 10 are all disposed in the cavity 20 of the body 1 . For example, in some embodiments, the first optical filter 7 , the second optical filter 8 , the third optical filter 9 and the fourth optical filter 10 can be bonded at proper positions in the cavity 20 by adhesive.

In the embodiment of the utility model, the first laser transmitter 2, the second laser transmitter 3, the first laser receiver 4, the second laser receiver 5, the optical fiber adapter 6, the first filter 7, the second filter The relative positions and angles between the optical sheet 8, the third optical filter 9 and the fourth optical filter 10, and the first optical filter 7, the second optical filter 8, the third optical filter 9 and the fourth optical filter The optical properties of the four filters 10 (for example, light transmission properties or light reflection properties, etc.) can be flexibly set, as long as the setting can meet the light propagation path described in detail below.

The first laser emitter 2 may emit light having a first wavelength. The light of the first wavelength propagates to the first optical filter 7 and enters the optical fiber adapter 6 through the first optical filter 7 . That is, the first optical filter 7 transmits the light with the first wavelength emitted by the first laser transmitter 2 to the optical fiber adapter 6 .

The second laser emitter 3 can emit light having a second wavelength. The light of the second wavelength is incident on the first filter 7 . The first optical filter 7 reflects the light of the second wavelength to the optical fiber adapter 6 . Here, the first optical filter 7 may completely or partially reflect the light of the second wavelength.

That is, in some embodiments, the first filter 7 transmits light of a first wavelength and reflects light of a second wavelength.

The optical fiber adapter 6 can receive light from the outside through an optical fiber, and the light can include a light component with a third wavelength and a light component with a fourth wavelength (hereinafter respectively referred to as light with a third wavelength and light with a fourth wavelength) . After entering the optical fiber adapter 6 , the light exits from the optical fiber adapter 6 and enters the second optical filter 8 . The second filter 8 reflects the light of the third wavelength and the light of the fourth wavelength to the third filter 9 . The third optical filter 9 transmits the light of the third wavelength therethrough and enters the first laser receiver 4 , and reflects the light of the fourth wavelength therefrom to the fourth optical filter 10 . The fourth optical filter 10 transmits the light of the fourth wavelength therethrough and enters the second laser receiver 5 .

That is, in some embodiments, the second optical filter 8 reflects the light of the third wavelength and the light of the fourth wavelength, and the third optical filter 9 transmits the light of the third wavelength so that it is incident on the first laser receiver 4 and The light of the fourth wavelength is reflected, and the fourth filter 10 transmits the light of the fourth wavelength to be incident on the second laser receiver 5 .

In this way, through the aforementioned second optical filter 8, third optical filter 9 and fourth optical filter 10, the light of the third wavelength and the light of the fourth wavelength in the incident light of the optical fiber adapter 6 are effectively separated and are respectively incident on the first laser receiver 4 and the second laser receiver 5 to be detected respectively.

In the foregoing embodiments, the foregoing first wavelength, second wavelength, third wavelength and fourth wavelength may be different from each other.

In the foregoing embodiments, the difference between the foregoing third wavelength and the fourth wavelength may be as small as 40 nanometers, or even as small as 10 nanometers. In this way, light with a wavelength difference as small as 40 or even 10 nanometers can be resolved and received by the optical transceiver of the utility model.

In this way, through the aforementioned first laser transmitter 2, second laser transmitter 3, first laser receiver 4, second laser receiver 5, optical fiber adapter 6, first optical filter 7, second optical filter 8 And the appropriate setting of the third optical filter 9, the optical transceiver in the embodiment of the utility model can realize the emission of light of two wavelengths (that is, the light of the first wavelength and the light of the second wavelength) and the light of two wavelengths Reception of light (ie, light of the third wavelength and light of the fourth wavelength).

In the embodiment of the present utility model, the longitudinal center axes of the aforementioned first laser transmitter 2, second laser transmitter 3, first laser receiver 4, second laser receiver 5 and fiber optic adapter 6 are located in the same plane (See Fig. 3 and Fig. 4), like this, make the optical paths of the light of the aforementioned first wavelength, the light of the second wavelength, the light of the third wavelength and the light of the fourth wavelength in the optical transceiver in the same plane ( That is, in the plane where the cross-section shown in Fig. 3 and Fig. 4 is located). Therefore, in the optical transceiver of the embodiment of the utility model, the light propagates in the same two-dimensional plane, rather than in a three-dimensional plane. The first laser transmitter 2, the second laser transmitter 3, and the first laser receiver 4. The second laser receiver 5 and the optical fiber adapter 6 can be arranged in the same plane (ie, their longitudinal central axes are in the same plane), instead of being distributed in three-dimensional space. Therefore, the volume of the optical transceiver can be made smaller and thinner, so as to meet the international standard size requirements of XFP or SFP.

Here, the "longitudinal" may refer to the installation direction of these components in the installation holes of the main body 1 .

Referring to Fig. 3 and Fig. 4, in some embodiments of the present utility model, the second optical filter 8 can be arranged between the optical fiber adapter 6 and the first optical filter 7, that is, the light of the aforementioned first wavelength and the second optical filter The light of the wavelength is on the optical path from the first optical filter 7 to the optical fiber adapter 6 . The position and angle of the second optical filter 8 relative to other elements of the optical transceiver and the optical properties (for example, light transmission and light reflection properties) of the second optical filter 8 itself can be set appropriately so that the aforementioned first wavelength The light and the light of the second wavelength pass through the second filter 8 and enter the optical fiber adapter 6 . That is, the second optical filter 8 transmits the light of the aforementioned first wavelength and the aforementioned light of the second wavelength to the optical fiber adapter 6 . In this way, the structure of the optical transceiver can be made more compact, and the volume of the optical transceiver can be further reduced.

The above uses specific examples to illustrate the utility model, which is only used to help understand the utility model, and is not intended to limit the utility model. For those skilled in the technical field to which the utility model belongs, some simple deduction, deformation or replacement can also be made according to the idea of the utility model.

Claims (2)

1. a kind of optical transceiver is it is characterised in that include：

Body, described body interior forms cavity, described body be provided with the first installing hole, the second installing hole, the 3rd installing hole, 4th installing hole and the 5th installing hole, described first installing hole, the second installing hole, the 3rd installing hole, the 4th installing hole and the 5th Installing hole is connected with described cavity；

First laser transmitter, described first laser transmitter is arranged on described first installation in the hole；

Second laser transmitter, described second laser transmitter is arranged on described second installation in the hole；

First laser receiver, described first laser receiver is arranged on described 3rd installation in the hole；

Second laser receiver, described second laser receiver is arranged on described 4th installation in the hole；

Fiber adapter, described fiber adapter is arranged on described 5th installation in the hole；

First optical filter, described first optical filter is arranged in described cavity, and described in transmission, first laser transmitter sends First wave length light to described fiber adapter, and reflect the light of the second wave length that described second laser transmitter sends to institute State fiber adapter；

Second optical filter, the 3rd optical filter and the 4th optical filter, described second optical filter, described 3rd optical filter and the described 4th Optical filter is arranged in described cavity, and described second optical filter reflection is by the 3rd wavelength in the incident light of described fiber adapter Light and the 4th wavelength light to described 3rd optical filter, the light of described 3rd filter transmission the 3rd wavelength swashs to described first Optical receiver and reflect the light of the 4th wavelength to described 4th optical filter, the light of described 4th filter transmission the 4th wavelength is to institute State second laser receiver；

Wherein said first laser transmitter, described second laser transmitter, described first laser receiver, described second laser The longitudinal center axis of receiver and described fiber adapter is located in approximately the same plane.

2. optical transceiver as claimed in claim 1 it is characterised in that：Described second optical filter is arranged on described fiber adapter And described first optical filter between, and the light of the light of first wave length described in transmission and described second wave length is to described fiber adapters Device.