WO2017220022A1

WO2017220022A1 - Optical transceiver integrated module

Info

Publication number: WO2017220022A1
Application number: PCT/CN2017/089766
Authority: WO
Inventors: 王欣
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-06-23
Filing date: 2017-06-23
Publication date: 2017-12-28
Also published as: CN107547136A

Abstract

An optical transceiver integrated module, comprising: a first optical transceiver component, a second optical transceiver component, a signal processor and a selection controller, wherein the selection controller comprises a selection module and a control module, the first optical transceiver component comprises a light emitting unit and a light receiving unit, and the second optical transceiver component comprises a light emitting unit and a light receiving unit; the selection module selects one of the first optical transceiver component and the second optical transceiver component as a receiving module of the optical transceiver integrated module, and the other one as a transmission module; and the control module is arranged to perform a control operation, such that the signal processor communicates with the light receiving unit in the receiving module, the signal processor performs signal reception processing, the signal processor communicates with the light emitting unit in the signal processor, and the signal processor performs signal emitting processing.

Description

Optical transceiver module

Technical field

The present disclosure relates to the field of communications technologies, for example, to an optical transceiver module.

Background technique

With the continuous development of optical communication technology, the optical transceiver module has been widely used in optical fiber communication systems, which plays the role of converting electrical signals into optical signals and optical signals into electrical signals, and the performance of optical transceiver modules. It has an important impact on the performance of optical fiber communication systems. The optical transceiver module is a key part of the fiber-optic communication system.

The optical transceiver module is composed of two parts: a receiving part and a transmitting part. The receiving part realizes the conversion of the optical signal to the electrical signal, and the optical signal of a certain code rate is input into the optical transceiver module, and then converted into an electrical signal by the light detecting diode, and the electrical signal of the corresponding bit rate is outputted through the preamplifier, and the output electrical signal is generally It is a Positive Emitter-Coupled Logic (PECL) level. The transmitting part realizes the conversion of the electrical signal to the optical signal, and the electrical signal of a certain code rate is driven by the internal driving chip to drive a semiconductor laser (Laser Diode, LD) or a light emitting diode (LED) to emit a modulated light of a corresponding rate. The signal and the internal part of the transmitting part are equipped with an Automatic Power Control (APC) circuit to stabilize the output optical signal power.

The receiving port and the transmitting port of the optical transceiver module in the related art are all fixed manners, that is, the receiving port is connected to the optical fiber with the optical signal sent by the signal transmitting end, and the transmitting port sends the signal to the signal receiving end through the optical fiber. The method of the fixed transceiver port brings a lot of restrictions. When the sending and receiving directions of the two fibers are not matched with the sending and receiving directions of the transceiver port of the optical transceiver module, the fiber needs to be manually pulled out manually and the fiber is re-confirmed. Inserting and reconnecting increases the number of insertions and removals of the optical fiber, resulting in a decrease in the service life of the optical fiber, and repeated manual insertion and removal of the configuration, which reduces the work efficiency.

Summary of the invention

The utility model relates to an optical transceiver module capable of identifying a receiving module and a transmitting module, which solves the problem of low working efficiency caused by manual repeated insertion and removal of optical fibers.

An optical transceiver module includes:

a first optical transceiver assembly including a light emitting unit and a light receiving unit;

a second optical transceiver assembly including a light emitting unit and a light receiving unit;

Signal processor;

Selecting a controller, including a selection module and a control module; wherein

The selection module is configured to select one of the first optical transceiver component and the second optical transceiver component as a receiving module of the optical transceiver module according to an operating mode selection parameter, and the other is used as the optical transceiver a transmitting module of the integrated module;

The control module is configured to perform a control operation such that the signal processor communicates with a light receiving unit in the receiving module, causing the signal processor to perform signal receiving processing such that the signal processor and the signal processor The light emitting unit in the transmitting module communicates, so that the signal processor performs signal transmitting processing.

The optical transceiver module of the embodiment includes: a first optical transceiver assembly including a light emitting unit and a light receiving unit; a second optical transceiver assembly including a light emitting unit and a light receiving unit; and a signal processor disposed from the first One of the optical transceiver component or the second optical transceiver component receives the first signal and transmits a second signal to the other; the selection module is configured to select a parameter from the first optical transceiver component and the device according to an operating mode One of the second optical transceiver components is selected as the receiving module of the optical transceiver integrated optical module, and the other is the transmitting module of the optical transceiver integrated optical module; and the control module is configured to control the signal processor and the The light receiving unit in the receiving module communicates to enable the signal processor to perform signal receiving processing, and controls the signal processor to communicate with the light emitting unit in the transmitting module to cause the signal processor to perform signal transmission processing. . The optical transceiver module can identify and switch the receiving module and the transmitting module according to the signal parameters output by the first optical transceiver unit or the second optical transceiver unit, and does not need to manually insert and remove the optical fiber, and the working efficiency is high.

DRAWINGS

1 is a schematic overall view of an optical transceiver module according to an embodiment;

2 is a schematic diagram showing the internal structure of the optical transceiver module shown in FIG. 1;

3 is a block diagram showing the structure of the optical transceiver module shown in FIG. 1;

4 is a structural block diagram of the selection module of FIG. 3;

Figure 5 is a structural diagram 1 of the control module of Figure 3;

FIG. 6 is a structural diagram 2 of the control module of FIG. 3.

detailed description

In order to make the technical solutions clearer, the technical solutions will be described in detail below with reference to the accompanying drawings and embodiments. The technical features in the following embodiments and the embodiments may be arbitrarily combined with each other without conflict.

As shown in FIG. 1 and FIG. 2, the embodiment provides an optical transceiver module 100. The optical transceiver module 100 can include a first optical transceiver component 110, a second optical transceiver component 120, a selection controller 130, and a signal. The processor 140, the circuit board 150, the optical fiber connector 160, the pull ring 170, and the outer casing 180.

The signal output end of the first optical transceiver component 110 and the signal output end of the second optical transceiver component 120 are respectively connected to the circuit board 150, and the selection controller 130 and the signal processor 140 are both disposed on The first end of the optical fiber connector 160 is connected to the first optical transceiver component 110 and the second optical transceiver component 120, and the second end is connected to an optical fiber. In this embodiment, the number of the optical fiber connectors may be two, and the two optical fiber connectors 160 are respectively connected to the first optical transceiver component 110 and the second optical transceiver component 120.

Optionally, the pull ring 170 is disposed on an outer side of the outer casing and is located at one end of the optical transceiver module 100 for connecting an optical fiber.

Optionally, the outer casing 180 includes a base 181 and a cover 182. The base 181 is integrally formed with the outer cover 182, and a receiving cavity is formed therebetween for receiving the first optical transceiver component 110. The second optical transceiver component 120, the selection controller 130, the signal processor 140, and a portion of the circuit board 150. The outer casing 180 is provided with a first end of the pull ring 170, and is provided with an opening, so that an optical fiber can be connected to the optical fiber connector 160 through an opening, and the pull ring 170 can be used for fastening the optical fiber to the optical fiber. The connection of the device. The second end of the housing 180 is for connection with an external terminal device.

Please refer to FIG. 3. FIG. 3 is a structural block diagram of the optical transceiver module 100 shown in FIG. The first optical transceiver component 110 includes a light emitting unit 111 and a light receiving unit 112. The second optical transceiver component 120 includes a light emitting unit 121 and a light receiving unit 122. In the present embodiment, the light emitting unit 111 is the same as the light emitting unit 121, and the light receiving unit 112 is the same as the light receiving unit 122.

The first optical transceiver component 110 is connected to the selection controller 130. Specifically, the light emitting unit 111 and the light receiving unit 112 are respectively connected to the selection controller 130. The second optical transceiver component 120 is connected to the selection controller 130. Optionally, the light emitting unit 121 and the light receiving unit 122 are respectively connected to the selection controller 130.

The signal processor 140 is coupled to the selection controller 130. The signal processor 140 is configured to receive a first signal from one of the first optical transceiver component 110 or the second optical transceiver component 120 and to transmit a second signal to the other. The signal processor 140 is further configured to be connected to an external terminal device for signal transmission. For example, when the first optical transceiver component 110 functions as a receiving module, and when the second optical transceiver component 120 functions as a transmitting module, when the first optical transceiver component 110 has an optical signal input, the optical receiving unit The optical signal is received by the optical signal and converted into an electrical signal, and the first signal may be an electrical signal after photoelectric conversion. The signal processor 140 processes the first signal and uses the processed electrical signal as the second signal.

In this embodiment, although the first optical transceiver component 110 and the second optical transceiver component 120 each include a light emitting unit and a light receiving unit, only the first optical transceiver component 110 and the second optical transceiver component may be included. One of the 120s is used as the receiving module of the optical transceiver module 100, and the other is used as the transmitting module of the optical transceiver module 100. At the same time, the signal processor 140 can be used as the The first optical transceiver component 110 of the receiving module or the light receiving unit of the second optical transceiver component 120 receives the first signal. At the same time, the signal processor 140 may receive a first signal from one of the light receiving unit 112 of the first optical transceiver component 110 or the light receiving unit 122 of the second optical transceiver component 120, The light emitting unit 111 of the first optical transceiver unit 110 and the light emitting unit 121 of the second optical transceiver unit 120 may not operate.

The signal processor 140 may send a second signal to a light emitting unit that is the first optical transceiver component 110 or the second optical transceiver component 120 of the transmitting module. At the same time, the signal processor 140 may send a second signal to one of the light emitting unit 111 or the light emitting unit 121, the light receiving unit 112 and the second light of the first optical transceiver component 110. The light receiving unit 122 of the transceiver component 120 may not operate.

The selection controller 130 can include a selection module 131 and a control module 132.

The selection module 131 is configured to select one of the first optical transceiver component 110 and the second optical transceiver component 120 as a receiving module of the optical transceiver integrated optical module 100 according to an operating mode selection parameter, and another As a transmission module of the optical transceiver integrated optical module 100.

Optionally, after the optical receiving unit of the first optical transceiver component 110 or the second optical transceiver component 120 receives the optical signal, the optical transceiver component that receives the optical signal outputs a signal as an operation mode selection parameter, where The selection module 131 can receive the working mode selection parameter, and select one of the first optical transceiver component 110 and the second optical transceiver component 120 as the optical transceiver integrated optical module according to the working mode selection parameter. The receiving module of 100 is the transmitting module of the optical transceiver integrated optical module 100.

In this embodiment, the working mode selection parameter may be an electrical signal output by the first optical transceiver component 110 or the second optical transceiver component 120. For example, when the first optical transceiver component 110 functions as the receiving module, the second optical transceiver component 120 receives a noise light signal due to interference of other signals or factors, and the first optical transceiver component 110 And the second optical transceiver component 120 has an associated signal input. At this time, because the optical signal received by the second optical transceiver component 120 is the noise of the optical signal received by the first optical transceiver component 110, the second optical transceiver component The received optical signal is weak, the electrical signal output by the second optical transceiver component 120 is small, and the selection module 131 can select a larger electrical signal as the operating mode selection parameter.

Please refer to FIG. 4. FIG. 4 is a structural block diagram of the selection module 131 of FIG. Optionally, the selection module 131 includes a conversion unit 1311, a determination unit 1312, and a selection unit 1313. The conversion unit 1311 is configured to convert the electrical signal to an optical power value. The determining unit 1312 is configured to determine whether the optical power value is greater than a predetermined threshold, and whether the duration of the optical power value is greater than a predetermined threshold exceeds the preset time. The selecting unit 1313 is configured to select the first optical transceiver component 110 as the receiving module if the optical power value of the first optical transceiver component is greater than the predetermined threshold and the duration exceeds a predetermined time. The second optical transceiver component 120 is configured as the transmitting module; and if the optical power value of the second optical transceiver component 120 is greater than the predetermined threshold and the duration exceeds a predetermined time, the second light is selected The transceiver component 120 serves as the receiving module, and selects the first optical transceiver component 110 as the transmitting module.

When an optical signal is input, the light receiving unit 112 of the first optical transceiver component 110 (or the light receiving unit 122 of the second optical transceiver component 120) receives the optical signal and receives the received light. The signal is converted into an electrical signal that is output from the output of the first optical transceiver component 110 (or the second optical transceiver component 120), ie, from the light receiving unit 112 (or the light receiving unit) 122) Output.

When the selection module 131 receives the first optical transceiver component 110 (or the second optical transceiver group) After the electrical signal outputted by the output of the device 120), the converting unit 1311 converts the electrical signal to an optical power value according to a preset calculation method, and sends the optical power value to the determining Unit 1312. The determining unit 1312 compares the optical power value with a preset threshold, and determines whether the optical power value is greater than the predetermined threshold (preset threshold), that is, whether the electrical signal is greater than the predetermined threshold, and continues Whether the time exceeds the preset time. The determining unit 1312 outputs the result of the determination to the selecting unit 1313, and if the optical power value is greater than the predetermined threshold (that is, the electrical signal is greater than a threshold), and the duration exceeds a preset time, the The selecting unit 1313 selects the first optical transceiver component 110 (or the second optical transceiver component 120) as the receiving module of the optical transceiver module 100, and the second optical transceiver component 120 (or the first optical transceiver The component 110) is used as a transmitting module of the optical transceiver integrated optical module 100.

Optionally, the selecting module 131 is configured to: the optical power value converted by the electrical signal output by the light receiving unit of the first optical transceiver component 110 is greater than a predetermined threshold, and the duration exceeds a preset time. Selecting the first optical transceiver component 110 as the receiving module, the second optical transceiver component 120 as the transmitting module, and converting the electrical signal outputted by the light receiving unit of the second optical transceiver component 120 When the optical power value is greater than the predetermined threshold and the duration exceeds the preset time, the second optical transceiver component 120 is selected as the receiving module, and the first optical transceiver component 110 serves as the transmitting module.

In this embodiment, the predetermined threshold may be -35 dBm, and the preset time may be 30 ms. The predetermined threshold and the preset time may be correspondingly set according to different optical modules used.

In this embodiment, the electrical signal output by the first optical transceiver component 110 or the second optical transceiver component 120 can be used as the working mode selection parameter, and the first light can be determined and selected by using the operating mode selection parameter. One of the transceiver component 110 or the second optical transceiver component 120 serves as the receiving module and the other is the transmitting module. Optionally, a splitting component, such as a wavelength division multiplexer, is disposed at one end of the optical signal input of the first optical transceiver component 110 and the second optical transceiver component 120, and a small portion of the optical signal is separated by using the splitting component. A small portion of the optical signal is transmitted to the selection controller 130, and the selection controller 130 determines and selects the transmission module and the receiving module of the optical transceiver module.

The control module 132 is configured to control the signal processor 140 to communicate with a light receiving unit in the receiving module to cause the signal processor 140 to perform signal receiving processing, and to control the signal processor 140 and the transmitting a light emitting unit in the module communicates to cause the signal processor to perform a signal Send processing.

Optionally, the control module 132 is connected to the selection module 131. After the receiving module and the transmitting module of the optical transceiver module 100 are selected, the control module 132 controls the path between the signal processor 140 and the light receiving unit of the receiving module to be turned on, and A path between the signal processor 140 and a light emitting unit of the transmitting module is controlled to be turned on. The control module 132 can also control the disconnection between the signal processor 140 and the light emitting unit in the receiving module, and control the light receiving in the signal processor 140 and the transmitting module. The path between the units is broken.

Please refer to FIG. 4 and FIG. 5 . FIG. 4 is a structural block diagram of the control module 132 , and FIG. 5 is a structural diagram 1 of the control module 132 . The control module 132 can include four conductive switches 1321. For example, when the first optical transceiver component 110 functions as the receiving module and the second optical transceiver component 120 functions as the transmitting module, The conduction switch 1321 between the signal processor 140 and the light receiving unit 112 is turned on, and the conduction switch 1321 between the signal processor 140 and the light emitting unit 121 is turned on, The turn-on switch 1321 between the signal processor 140 and the light-emitting unit 111 is turned off, and the turn-on switch 1321 between the signal processor 140 and the light-receiving unit 122 is turned off.

FIG. 6 is a structural diagram of the control module 132. Referring to FIG. 6, if the first optical transceiver component 110 is used as the transmitting module, and the second optical transceiver component 120 is used as the receiving module, The conduction switch 1321 between the signal processor 140 and the light receiving unit 122 is turned on, and the conduction switch 1321 between the signal processor 140 and the light emitting unit 111 is turned on, The turn-on switch 1321 between the signal processor 140 and the light emitting unit 121 is turned off, and the turn-on switch 1321 between the signal processor 140 and the light receiving unit 112 is turned off.

In this embodiment, the on switch 1321 can be a single pole single throw switch, and the number of the on switches can be 4. The turn-on switch 1321 can also be two single-pole double-throw switches, and the first single-pole double-throw switch can respectively control the path between the optical transmitting unit 111 of the first optical transceiver unit and the signal processor 140, and the light receiving unit 112 and The path between the signal processors 140, the second single-pole double-throw switch can respectively control the path between the optical transmitting unit 121 of the second optical transceiver unit and the signal processor 140, and the light receiving unit 122 and the signal processor 140 The path between.

In this embodiment, by controlling the conduction switch to control the path between the optical transceiver unit and the light receiving unit and the signal processor, the transmission of the control signal, and maintaining the path between the control optical transceiver unit and the light receiving unit and the signal processor. Turning on, controlling the light of the receiving module by sending a control command The receiving unit and the light emitting unit of the transmitting module operate, and the light emitting unit of the receiving module and the receiving unit of the transmitting module do not work to perform signal transmission. The light emitting unit 111, the light receiving unit 112, the light emitting unit 121, and the light receiving unit 122 may all be connected to the signal processor 140 through the control module 132, and the control module controls The light receiving unit in the receiving module operates to enable the signal processor to receive a signal sent by the light receiving unit, and the control module 132 can control the light emitting unit in the transmitting module to operate, so that the signal processing The device sends a signal to the light emitting unit, and the control module controls whether the light emitting unit in the receiving module and the light receiving unit in the transmitting module do not work.

The optical signal is received by the first optical transceiver component 110 and selected as the receiving module of the optical transceiver module 100 as an example.

When an optical signal is input at the first optical transceiver component 110, the optical receiving unit 112 receives the optical signal, and photoelectrically converts the optical signal into an electrical signal, the electrical signal from the The output of the first optical transceiver component 110 is output to the selection controller 130.

After the selection module 131 receives the electrical signal from the output end of the first optical transceiver component 110, that is, after receiving the electrical signal from the light receiving unit 112, the converting unit 1311 converts by electro-optical The electrical signal is converted to an optical power value and the optical power value is transmitted to the determining unit 1312.

The determining unit 1312 compares the optical power value with a predetermined threshold, determines whether the optical power value is greater than the predetermined threshold, and whether the duration exceeds the preset time. The determining unit 1312 transmits the determination result to the selection unit 1313. If the optical power value is greater than -35 dBm and the duration exceeds 30 ms, the selection module 131 selects the first optical transceiver component 110 as the optical transceiver unit. The receiving module of the optical module 100, and the second optical transceiver component 120 serves as a transmitting module of the optical transceiver module 100.

The control module 132 controls a path between the signal processor 140 and the light receiving unit 112 of the first optical transceiver component 110 to conduct signal transmission, and the control module 132 controls the signal processor 140. A path between the light emitting unit 121 of the second optical transceiver unit 120 is turned on for signal transmission, and the control module 132 controls the signal processor 140 and the light emitting unit of the first optical transceiver unit 110 The path between the 111 is broken, and the path between the signal processor 140 and the light receiving unit 122 of the second optical transceiver unit 120 is controlled to be disconnected.

The light receiving unit 112 of the first optical transceiver component 110 serves as the optical transceiver module. The light receiving unit in the receiving module of the block 100 and the light emitting unit 121 of the second optical transceiver unit 120 serve as a light emitting unit in the transmitting module of the optical transceiver module 100.

If the optical power value is greater than -35 dBm, but the duration does not exceed 30 ms, or the optical power value is less than -35 dBm, the selection controller 130 may re-detect the first optical transceiver component 110 and the second light. Whether the transceiver component 120 has an optical signal input, and performs calculation comparison and selection again.

The selection module 131 and the control module 132 can be implemented by a central processor, a digital signal processor (DSP) or a Field Programmable Gate Array (FPGA), a central processing unit, a DSP and The FGPA may contain a storage medium storing executable instructions arranged to perform the above method. The storage medium may be a non-transitory storage medium, including: a read-only memory (ROM) or a random access memory (RAM), and the like, or a temporary storage device. medium.

The above is described by taking an optical signal input at the first optical transceiver component 110 as an example. When an optical signal is input at the second optical transceiver component 120, the selection controller 130 detects that the selection process is the same. of. When the second optical transceiver module 120 is used as the receiving module of the optical transceiver module 100, and the first optical transceiver component 110 is used as the transmitting module of the optical transceiver module 100, the second optical transceiver component 120 The light receiving unit 122 can be used as a light receiving unit in the receiving module of the optical transceiver module 100, and the light emitting unit 111 of the first optical transceiver module 110 is used as a transmitting module of the optical transceiver module 100. Light emitting unit.

The optical transceiver module of the embodiment includes: a first optical transceiver component including a light emitting unit and a light receiving unit; a second optical transceiver component including a light emitting unit and a light receiving unit; and a selecting module configured to select a parameter according to an operating mode Selecting one of the first optical transceiver component and the second optical transceiver component as a receiving module of the optical transceiver integrated optical module, and the other as a transmitting module of the optical transceiver integrated optical module; a signal processor And configured to receive a first signal from the receiving module, and send a second signal to the sending module; the control module is configured to control the signal processor to communicate with the light receiving unit in the receiving module, so that the signal processor Performing signal receiving processing, and controlling the signal processor to communicate with the light emitting unit in the transmitting module to cause the signal processor to perform signal transmitting processing. The optical transceiver module recognizes and switches the receiving module and the transmitting module according to the signal parameters output by the first optical transceiver component or the second optical transceiver component, and does not need to manually insert and remove the optical fiber, and has high work efficiency.

The optical transceiver module 100 in the foregoing embodiment can automatically switch between the receiving module and the sending module. The optical transceiver integrated optical module 100 can also implement manual switching of the receiving module and the transmitting module. The manual switching of the receiving module and the transmitting module is implemented as follows.

When the optical transceiver module 100 is connected to the external terminal device, one of the first optical transceiver component 110 or the second optical transceiver component 120 may be the receiving module and the other is the transmitting module. After the optical fiber is inserted, after the reverse connection occurs, the receiving module and the transmitting module may be switched by a control program in the external terminal device.

For example, when the optical transceiver module 100 is connected to an external terminal device, the first optical transceiver component 110 is a receiving module, and the second optical transceiver component 120 is a transmitting module. At the same time, the first optical transceiver component 110 is switched to a transmitting module by switching in a control program in the external terminal device, and the second optical transceiver component is switched to the receiving module. The control program of the external terminal device can be a virtual button or a hardware button, and can be switched by pressing a button.

The mode of manual switching in the above method can be switched by one button on the external terminal device, and the optical fiber is not required to be manually inserted and removed repeatedly, and the working efficiency is high.

Industrial applicability

The utility model relates to an optical transceiver module, which solves the problem of low work efficiency caused by manual repeated insertion and removal of optical fibers.

Claims

An optical transceiver module includes:

a first optical transceiver assembly including a light emitting unit and a light receiving unit;

a second optical transceiver assembly including a light emitting unit and a light receiving unit;

Signal processor;

Selecting a controller, including a selection module and a control module; wherein

The selection module is configured to select one of the first optical transceiver component and the second optical transceiver component as a receiving module of the optical transceiver module according to an operating mode selection parameter, and the other is used as the optical transceiver a transmitting module of the integrated module;

The control module is configured to perform a control operation such that the signal processor communicates with a light receiving unit in the receiving module, causing the signal processor to perform signal receiving processing such that the signal processor and the signal processor The light emitting unit in the transmitting module communicates, so that the signal processor performs signal transmitting processing.
The module of claim 1 wherein said operational mode selection parameter is an electrical signal output by said first optical transceiver component or said second optical transceiver component.
The module of claim 2, wherein the selection module is configured to: convert an electrical signal outputted by the optical receiving unit of the first optical transceiver component into an optical power value greater than a predetermined threshold, and the optical power value continues to be greater than When the duration of the predetermined threshold exceeds a preset time, the first optical transceiver component is selected as the receiving module, and the second optical transceiver component is used as the transmitting module;

Selecting the second optical transceiver when the optical power value output by the optical receiving unit of the second optical transceiver unit is converted to an optical power value greater than a predetermined threshold, and the optical power value continues to be greater than a predetermined threshold for a duration exceeding a preset time. The component serves as the receiving module, and the first optical transceiver component functions as the transmitting module.
The module of claim 3 wherein said selection module comprises:

a conversion unit configured to convert the electrical signal and obtain an optical power value;

a determining unit, configured to determine whether the optical power value is greater than the predetermined threshold, and whether the duration exceeds the preset time;

a selection unit, configured to select the first optical transceiver component as the receiving module if the optical power value of the first optical transceiver component is greater than the predetermined threshold and the duration exceeds a predetermined time a second optical transceiver component as the transmitting module; if the optical power value of the second optical transceiver component is greater than the predetermined threshold and the duration exceeds a predetermined time, selecting the second optical transceiver component as the The receiving module selects the first optical transceiver component as the transmitting module.
The module of claim 3 wherein said predetermined threshold is -35 dBm and - is a negative sign.
The module of claim 3 wherein said preset time is 30 ms.
The module of claim 1 wherein said control module controls conduction of a path between said signal processor and a light receiving unit of said receiving module and controls said signal processor and said transmitting The path between the light emitting units in the module is turned on;

The control circuit controls a path between the signal processor and a light emitting unit in the receiving module to be disconnected, and controls a path between the signal processor and a light receiving unit in the transmitting module disconnect.
The module of claim 1 , wherein the control module controls operation of the light receiving unit in the receiving module, so that the signal processor receives a signal sent by the light receiving unit in the receiving module, The control module controls operation of the light emitting unit in the transmitting module to cause the signal processor to send a signal to the light emitting unit in the transmitting module;

The control module controls the light emitting unit in the receiving module to be inoperative and controls the sending The light receiving unit in the module does not work.