Control method for adaptive adjustment of extinction ratio of optical module

Abstract

The application belongs to the technical field of laser control, and discloses a control method for adaptive adjustment of extinction ratio of an optical module, which is applied to the optical module and specifically comprises the following steps: S101: receiving an optical signal transmitted by a laser of the optical module, obtaining average optical power transmitted by the optical signal, and then converting the optical signal into an electrical signal to obtain an initial detection current and an initial detection voltage of the current optical signal; S102: obtaining content data of the initial detection current and the initial detection voltage of the current optical signal, and inputting the content data of the initial detection current and the initial detection voltage into a preset data recognition model. The application ensures that the system can timely perform data processing and compensation, complete adaptive adjustment of the extinction ratio of the optical module, solve errors generated by small-amplitude fluctuations when the precision instrument is used, and facilitate stable transmission of the signal after the electrical signal is disturbed by the outside, so as to ensure the stability of the optical signal transmission.

Description

Technical Field

[0001] This invention relates to the technical field of laser control, specifically to a control method for adaptive adjustment of the extinction ratio of an optical module. Background Technology

[0002] In modern information networks, optical fiber communication technology has gradually replaced traditional cable transmission technology and taken a dominant position. Optical modules are the core components of optical fiber communication networks. For the design and production of optical modules, the extinction ratio is one of the important indicators for measuring the performance of optical modules. Without any compensation measures, the extinction ratio will vary greatly over a wide temperature range, which will lead to a surge in the transmission bit error rate. In practical design, if the extinction ratio is too small, it will lead to a decrease in receiver sensitivity, while if the extinction ratio is too large, it will degrade the optical eye diagram, which will also reduce receiver sensitivity. Therefore, the extinction ratio must be kept within a relatively narrow range over a wide temperature range (-40℃ to 85℃) to ensure receiver sensitivity and thus guarantee the correct transmission of data.

[0003] In previous methods for stabilizing the extinction ratio, most were based on open-loop control. The advantage of this approach is its simplicity and ability to stabilize the extinction ratio within a relatively wide range. However, this range of extinction ratios places high demands on the consistency of the laser, which is detrimental to the mass production of optical modules. A search revealed that patent number CN109449740B discloses an adaptive device for the extinction ratio of an optical module and its control method. This device can automatically correct the bias current and modulation current acting on the laser based on changes in the laser current, allowing the optical module to maintain stable optical power and extinction ratio output over a wide temperature range.

[0004] In existing technologies, electrical signals are unstable during transmission due to external interference. This indirectly causes slight fluctuations in current or voltage, resulting in small fluctuations in the extinction ratio of the optical module. Such small fluctuations can cause significant errors when using precision instruments, affecting their later use. Summary of the Invention

[0005] The purpose of this invention is to provide a control method for adaptive adjustment of the extinction ratio of an optical module. By setting a preset time, the system can ensure timely data processing and compensation to complete the adaptive adjustment of the extinction ratio of the optical module. This solves the error caused by small fluctuations in precision instruments during use. It also facilitates stable signal transmission through internal compensation after external interference during signal transmission. The invention aims to address the problem in existing technologies where external interference during signal transmission leads to signal instability, indirectly causing slight fluctuations in current or voltage.

[0006] The invention is achieved through a control method for adaptive adjustment of the extinction ratio of an optical module, applied to optical modules, specifically including the following steps:

[0007] S101: Receives the optical signal transmitted by the laser of the optical module, obtains the average optical power transmitted by the optical signal, converts the optical signal into an electrical signal, and obtains the initial detection current and initial detection voltage of the current optical signal.

[0008] S102: Obtain the initial detection current and initial detection voltage content data of the current optical signal, input the initial detection current and initial detection voltage content data into a preset data recognition model, and obtain the data recognition result output by the data recognition model based on the content data;

[0009] S103: Compare the obtained initial detection current and initial detection voltage data identification results with the preset detection current and preset detection voltage data of the system to obtain the extinction ratio correlation index based on the initial detection current and initial detection voltage.

[0010] S104: Based on the extinction ratio correlation index, determine the compensation flags of the initial detection current and initial detection voltage of the current electrical signal, and send a compensation request to the compensation module synchronously.

[0011] S105: Receives a compensation request and performs voltage compensation and current modulation on the transmitted point electrical signal, so that the initial detection current and initial detection voltage reach the preset output current and preset output voltage of the system. Drives the laser of the optical module to output according to the preset output current and preset output voltage, and adjusts the current extinction ratio back to the preset extinction ratio for optical signal transmission.

[0012] Further, in S101, receiving the optical signal transmitted by the optical module and obtaining the average optical power transmitted by the optical signal includes:

[0013] The monitoring module monitors the optical signal input. The monitoring module is connected to the extinction ratio compensation circuit. When the monitoring module monitors the optical signal input, it triggers the extinction ratio compensation circuit to start.

[0014] The detection module checks whether the optical signal transmitter detected by the monitoring module is the output of the optical module laser.

[0015] If the optical signal transmitting end is an output of an optical module laser, the current optical signal conversion is initiated according to the extinction ratio compensation circuit, and the average optical power transmitted by the optical signal is detected and acquired at the same time.

[0016] Further, in S102, the initial detection current and initial detection voltage data are input into a preset data recognition model, including:

[0017] Obtain multiple data recognition models, and sort the data thresholds of the multiple data recognition models in ascending order;

[0018] The initial detection current and initial detection voltage of the current optical signal are acquired, and the data is input into multiple data recognition models for recognition. The recognition stops when the data recognition model returns the initial detection current and initial detection voltage data of the current optical signal and matches the data threshold in the model.

[0019] Furthermore, in S103, the comparison between the acquired initial detection current and initial detection voltage data identification results and the preset detection current and preset detection voltage data preset by the system includes:

[0020] Acquire the initial detection current and initial detection voltage data identified in the data recognition model;

[0021] Acquire the preset target detection current and target detection voltage data within the system;

[0022] By comparing the data with the initial detection current and initial detection voltage, the associated current value and associated voltage value that need to be compensated for the current initial detection current and initial detection voltage are obtained. The associated current value and associated voltage value are calculated by the system to maintain stable optical power and extinction ratio output under the target detection current and target detection voltage.

[0023] Furthermore, the preset method for acquiring target detection current and target detection voltage data is as follows:

[0024] The system acquires the current external temperature of the optical module in real time and determines the optimal extinction ratio output at the current external temperature;

[0025] When the temperature changes, it promptly responds to the optimal extinction ratio output after the external temperature changes, and calculates the target detection current and target detection voltage data required for the optimal extinction ratio output after the external temperature changes.

[0026] Furthermore, the extinction ratio correlation index based on the initial probe current and the initial probe voltage is obtained, including:

[0027] The current correlation index of the optical signal is generated based on the correlation current value, the correlation voltage value, the target detection current, the target detection voltage, and the preset correlation index generation model.

[0028] Obtain the current correlation index and the average optical power transmitted by the optical signal, and obtain the extinction ratio correlation index;

[0029] Determine whether the extinction ratio correlation index is greater than the system preset extinction ratio correlation index. If so, establish the compensation relationship between the initial detection current and initial detection voltage of the extinction ratio correlation index and the target detection current and target detection voltage.

[0030] Further, in S104, the compensation flags of the initial detection current and initial detection voltage of the current electrical signal are determined, and a compensation request is synchronously sent to the compensation module, including:

[0031] The controller obtains the compensation relationship between the initial detection current and initial detection voltage and the target detection current and target detection voltage, which are related to the extinction ratio correlation index.

[0032] Obtain the compensation value between the extinction ratio and the current extinction ratio based on the preset extinction ratio correlation index and send it to the compensation module.

[0033] Further, in S105, receiving a compensation request and performing voltage compensation and current modulation on the transmitted point electrical signal includes:

[0034] After the compensation module identifies the compensation value, it compensates the corresponding electrical signal under the optical signal conversion, so that the extinction ratio of the compensated optical signal is within the threshold of the preset extinction ratio correlation index.

[0035] The circuit compensation process is performed to check whether the current and voltage values ​​of the compensated electrical signals are within the threshold values ​​of the target detection current and target detection voltage data. If not, the circuit compensation continues.

[0036] Furthermore, the method for detecting and acquiring the average optical power transmitted by the optical signal is as follows: use an optical power meter to measure the average output optical power of the optical module laser until the average output optical power reaches a constant value during optical signal transmission, and then record the current average optical power.

[0037] Further, in S105, the laser output of the optical module is driven according to the preset output current and preset output voltage, and the current extinction ratio is adjusted back to the preset extinction ratio for optical signal transmission, including:

[0038] After adjusting the current extinction ratio back to the preset extinction ratio, optical signal transmission under the compensated extinction ratio is performed within the preset time of the system.

[0039] Once the preset time has elapsed, the average optical power transmitted by the optical signal is acquired again, and then the optical signal is converted into an electrical signal. The initial detection current and initial detection voltage of the current optical signal are then acquired to adaptively adjust the extinction ratio.

[0040] Compared with existing technologies, the control method for adaptive adjustment of the extinction ratio of the optical module provided by the invention has the following beneficial effects:

[0041] 1. By detecting the optical signal transmitted by the laser module, the initial detection current and initial detection voltage of the current optical signal are obtained. Then, the initial detection current and initial detection voltage of the current optical signal are compared with the preset detection current and preset detection voltage data generated by the system detecting the optimal extinction ratio at the current temperature. The required compensation related current value and related voltage value are obtained. The compensation module completes the compensation of the initial detection current and initial detection voltage, so that the extinction ratio of the compensated optical signal can be within the preset extinction ratio threshold. Furthermore, a preset time is set to ensure that the system can perform data processing and compensation in a timely manner, and complete the adaptive adjustment of the extinction ratio of the optical module. This solves the error caused by small fluctuations when using precision instruments. It also facilitates stable signal transmission through internal compensation after the electrical signal is interfered with during transmission, ensuring the stability of optical signal transmission.

[0042] 2. The system acquires the current external temperature of the optical module in real time, which facilitates the determination of the optimal extinction ratio output at the current external temperature. When the temperature changes within a preset time, the system responds promptly to the optimal extinction ratio output after the external temperature changes. It calculates and outputs the target detection current and target detection voltage data required for the optimal extinction ratio output after the external temperature changes, so that the channel extinction ratio of the optical signal is always kept in the optimal state within a wide temperature range, achieving the effect of adaptive adjustment of the optical module extinction ratio. Attached Figure Description

[0043] Figure 1 A flowchart illustrating the control method for adaptive adjustment of the extinction ratio of the optical module proposed in this invention;

[0044] Figure 2 The flowchart of the control method for adaptive adjustment of optical module extinction ratio proposed in the invention is as follows: receiving the optical signal transmitted by the optical module and obtaining the average optical power transmitted by the optical signal.

[0045] Figure 3 A flowchart illustrating the acquisition method of preset target detection current and target detection voltage data in the control method for adaptive adjustment of optical module extinction ratio proposed in this invention;

[0046] Figure 4 A schematic diagram of the optical module system in the control method for adaptive adjustment of optical module extinction ratio proposed in the invention;

[0047] Figure 5 This is a schematic diagram of the controller structure of the optical module system in the control method for adaptive adjustment of the extinction ratio of the optical module proposed in the invention. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of the invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0049] The implementation of the invention will be described in detail below with reference to specific embodiments.

[0050] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of the invention, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0051] Reference Figure 1-5 As shown, the control method for adaptive adjustment of the extinction ratio of an optical module, applied to an optical module, specifically includes the following steps:

[0052] S101: Receives the optical signal transmitted by the laser of the optical module, obtains the average optical power transmitted by the optical signal, converts the optical signal into an electrical signal, and obtains the initial detection current and initial detection voltage of the current optical signal.

[0053] The process of receiving the optical signal transmitted by the optical module and obtaining the average optical power transmitted by the optical signal includes:

[0054] The monitoring module monitors the optical signal input. The monitoring module is connected to the extinction ratio compensation circuit. When the monitoring module monitors the optical signal input, it triggers the extinction ratio compensation circuit to start.

[0055] The detection and monitoring module checks whether the optical signal transmitter detected by the detection and monitoring module is the output of the optical module laser.

[0056] If the optical signal transmitter is an optical module laser output, the current optical signal conversion is initiated according to the extinction ratio compensation circuit, and the average optical power transmitted by the optical signal is detected and acquired at the same time.

[0057] S102: Obtain the initial detection current and initial detection voltage content data of the current optical signal, input the initial detection current and initial detection voltage content data into the preset data recognition model, and obtain the data recognition result output by the data recognition model based on the content data;

[0058] The process of inputting the initial detection current and initial detection voltage data into a preset data recognition model includes:

[0059] Obtain multiple data recognition models and sort the data thresholds of the multiple data recognition models in ascending order;

[0060] The system acquires the initial detection current and initial detection voltage data of the current optical signal, inputs the data into multiple data recognition models for recognition, and stops when the data recognition model returns the initial detection current and initial detection voltage data of the current optical signal and matches the data threshold in the data recognition model.

[0061] S103: Compare the obtained initial detection current and initial detection voltage data identification results with the preset detection current and preset detection voltage data of the system to obtain the extinction ratio correlation index based on the initial detection current and initial detection voltage.

[0062] The comparison between the acquired initial detection current and initial detection voltage data identification results and the preset detection current and preset detection voltage data of the system includes:

[0063] Acquire the initial detection current and initial detection voltage data identified in the data recognition model;

[0064] Acquire the preset target detection current and target detection voltage data within the system;

[0065] By comparing the data with the initial detection current and initial detection voltage, the associated current and associated voltage values ​​that need to be compensated for the current initial detection current and initial detection voltage are obtained. The associated current and associated voltage values ​​are calculated by the system to maintain stable optical power and extinction ratio output under the target detection current and target detection voltage preset by the system.

[0066] S104: Based on the extinction ratio correlation index, determine the compensation flags of the initial detection current and initial detection voltage of the current electrical signal, and send a compensation request to the compensation module synchronously.

[0067] This includes determining the compensation flags for the initial detection current and initial detection voltage of the current electrical signal, and synchronously sending a compensation request to the compensation module, including:

[0068] The controller obtains the compensation relationship between the initial detection current and initial detection voltage and the target detection current and target detection voltage based on the extinction ratio correlation index. The controller is the MCU, which is the central processing unit of the optical module system.

[0069] Obtain the compensation value between the extinction ratio and the current extinction ratio based on the preset extinction ratio correlation index and send it to the compensation module;

[0070] S105: Receives a compensation request and performs voltage compensation and current modulation on the transmitted electrical signal, causing the initial detection current and initial detection voltage to reach the preset output current and preset output voltage of the system. Drives the optical module laser output based on the preset output current and preset output voltage, adjusting the current extinction ratio back to the preset extinction ratio for optical signal transmission. By detecting the optical signal transmitted by the optical module laser, the initial detection current and initial detection voltage of the current optical signal are obtained. Then, the initial detection current and initial detection voltage of the current optical signal are compared with the preset detection current and preset detection voltage data generated by the system detecting the optimal extinction ratio at the current temperature to obtain the required compensation-related current and related voltage values. The compensation module completes the compensation of the initial detection current and initial detection voltage, ensuring that the extinction ratio of the compensated optical signal is within the preset extinction ratio threshold. This achieves adaptive adjustment of the optical module extinction ratio, solving the error caused by small fluctuations in precision instruments during use. It also facilitates stable signal transmission through internal compensation after external interference during transmission, ensuring the stability of optical signal transmission.

[0071] In this embodiment, the preset method for obtaining target detection current and target detection voltage data is as follows:

[0072] The system acquires the current external temperature of the optical module in real time and determines the optimal extinction ratio output at the current external temperature. When the temperature changes, it promptly responds to the optimal extinction ratio output after the change in external temperature, calculates the target detection current and target detection voltage data required for the optimal extinction ratio output at the current external temperature, and outputs the target detection current and target detection voltage data required for the optimal extinction ratio output at the current external temperature. This ensures that the channel extinction ratio of the optical signal is always kept in the optimal state over a wide temperature range, achieving the effect of adaptive adjustment of the optical module's extinction ratio.

[0073] In this embodiment, obtaining the extinction ratio correlation index based on the initial detection current and the initial detection voltage includes: generating the current correlation index of the optical signal based on the correlation current value, the correlation voltage value, the target detection current, the target detection voltage, and a preset correlation index generation model;

[0074] Obtain the current correlation index and the average optical power transmitted by the optical signal, and obtain the extinction ratio correlation index;

[0075] Determine whether the extinction ratio correlation index is greater than the system preset extinction ratio correlation index. If so, establish the compensation relationship between the initial detection current and initial detection voltage of the extinction ratio correlation index and the target detection current and target detection voltage.

[0076] In S105 of this embodiment, receiving a compensation request and performing voltage compensation and current modulation on the transmitted point electrical signal includes:

[0077] After the compensation module identifies the compensation value, it compensates the corresponding electrical signal under the optical signal conversion, so that the extinction ratio of the compensated optical signal is within the threshold of the preset extinction ratio correlation index.

[0078] The circuit compensation process is performed to check whether the current and voltage values ​​of the compensated electrical signals are within the threshold values ​​of the target detection current and target detection voltage data. If not, the circuit compensation continues.

[0079] In this embodiment, the method for detecting and acquiring the average optical power transmitted by the optical signal is as follows: the average output optical power of the optical module laser is measured using an optical power meter until the average output optical power reaches a constant value during optical signal transmission, and then the current average optical power is recorded.

[0080] In S105 of this embodiment, the optical module laser is driven to output according to the preset output current and preset output voltage, and the current extinction ratio is adjusted back to the preset extinction ratio for optical signal transmission, including:

[0081] After adjusting the current extinction ratio back to the preset extinction ratio, optical signal transmission under the compensated extinction ratio is performed within the preset time of the system.

[0082] Once the preset time has elapsed, the average optical power transmitted by the optical signal is acquired again, and then the optical signal is converted into an electrical signal. The initial detection current and initial detection voltage of the current optical signal are then acquired to adaptively adjust the extinction ratio.

[0083] Specifically, the optical module system includes an optical module laser, a monitoring module, a temperature measurement module, a controller, and a compensation module. It monitors and compensates for the current optical signal, and monitors the external temperature to ensure that the extinction ratio of the optical module remains within a relatively narrow range over a wide temperature range (-40℃ to 85℃), thus ensuring receiving sensitivity.

[0084] The controller includes a data identification unit, a data comparison unit, and a request unit. The data identification unit and the data comparison unit acquire and process the initial detection current and initial detection voltage of the current optical signal, while the request unit sends commands for subsequent signal compensation.

[0085] This technical solution detects the optical signal transmitted by the laser in the optical module, obtaining the initial detection current and initial detection voltage of the current optical signal. It then compares these initial detection current and voltage with preset detection current and voltage data generated by the system to determine the optimal extinction ratio at the current temperature. The system then obtains the necessary compensation-related current and voltage values, and a compensation module completes the compensation of the initial detection current and voltage. This ensures that the extinction ratio of the compensated optical signal remains within the preset extinction ratio threshold. Furthermore, the system acquires the external temperature of the optical module in real time to determine the optimal extinction ratio at the current external temperature. When the temperature changes within a preset time, the system promptly responds to the change in external temperature and outputs the optimal extinction ratio. It calculates and outputs the target detection current and target detection voltage data required for the optimal extinction ratio at the desired temperature, ensuring that the channel extinction ratio of the optical signal always remains at its optimal state over a wide temperature range, achieving the effect of adaptive adjustment of the optical module's extinction ratio.

[0086] Because the system has a preset time, it can process and compensate data in a timely manner, and complete the adaptive adjustment of the extinction ratio of the optical module. This solves the error caused by small fluctuations when using precision instruments. It also makes it easier for the electrical signal to be transmitted stably after being interfered with by external factors, and ensures the stability of the optical signal transmission.

[0087] In this embodiment, the entire operation process can be controlled by a computer, along with a PLC, to achieve automated operation control. In each operation stage, sensors can be set up to provide signal feedback and ensure that the steps are performed sequentially. These are all conventional knowledge in current automation control, and will not be elaborated on in this embodiment.

[0088] The above description is merely a preferred embodiment of the invention and is not intended to limit the invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A control method for adaptive adjustment of the extinction ratio of an optical module, characterized in that, When applied to optical modules, the specific steps include: S101: Receives the optical signal transmitted by the laser of the optical module, obtains the average optical power transmitted by the optical signal, converts the optical signal into an electrical signal, and obtains the initial detection current and initial detection voltage of the current optical signal. The process of receiving the optical signal transmitted by the optical module and obtaining the average optical power transmitted by the optical signal includes: The monitoring module monitors the optical signal input. The monitoring module is connected to the extinction ratio compensation circuit. When the monitoring module monitors the optical signal input, it triggers the extinction ratio compensation circuit to start. The detection module checks whether the optical signal transmitter detected by the monitoring module is the output of the optical module laser. If the optical signal transmitting end is the output of the optical module laser, the current optical signal conversion is initiated according to the extinction ratio compensation circuit, and the average optical power transmitted by the optical signal is detected and acquired at the same time. S102: Obtain the initial detection current and initial detection voltage content data of the current optical signal, input the initial detection current and initial detection voltage content data into a preset data recognition model, and obtain the data recognition result output by the data recognition model based on the content data; The process of inputting the initial detection current and initial detection voltage data into a preset data recognition model includes: Obtain multiple data recognition models, and sort the data thresholds of the multiple data recognition models in ascending order; The initial detection current and initial detection voltage of the current optical signal are acquired, and the data is input into multiple data recognition models for recognition. The recognition stops when the data recognition model returns the initial detection current and initial detection voltage of the current optical signal and matches the data threshold in the model. S103: Compare the obtained initial detection current and initial detection voltage data identification results with the preset detection current and preset detection voltage data of the system to obtain the extinction ratio correlation index based on the initial detection current and initial detection voltage. The preset methods for obtaining target detection current and target detection voltage data are as follows: The system acquires the current external temperature of the optical module in real time and determines the optimal extinction ratio output at the current external temperature; When the temperature changes, the system responds promptly to the optimal extinction ratio output after the external temperature changes, and calculates the target detection current and target detection voltage data required for the optimal extinction ratio output after the external temperature changes. S104: Based on the extinction ratio correlation index, determine the compensation flags of the initial detection current and initial detection voltage of the current electrical signal, and send a compensation request to the compensation module synchronously. S105: Receives a compensation request and performs voltage compensation and current modulation on the transmitted point electrical signal, so that the initial detection current and initial detection voltage reach the preset output current and preset output voltage of the system. Drives the laser of the optical module to output according to the preset output current and preset output voltage, and adjusts the current extinction ratio back to the preset extinction ratio for optical signal transmission.

2. The control method for adaptive adjustment of the extinction ratio of the optical module as described in claim 1, characterized in that, In S103, the comparison between the acquired initial detection current and initial detection voltage data identification results and the preset detection current and preset detection voltage data of the system includes: Acquire the initial detection current and initial detection voltage data identified in the data recognition model; Acquire the preset target detection current and target detection voltage data within the system; By comparing the data with the initial detection current and initial detection voltage, the associated current value and associated voltage value that need to be compensated for the current initial detection current and initial detection voltage are obtained. The associated current value and associated voltage value are calculated by the system to maintain stable optical power and extinction ratio output under the target detection current and target detection voltage.

3. The control method for adaptive adjustment of the extinction ratio of the optical module as described in claim 2, characterized in that, Obtain the extinction ratio correlation index based on the initial probe current and the initial probe voltage, including: The current correlation index of the optical signal is generated based on the correlation current value, the correlation voltage value, the target detection current, the target detection voltage, and the preset correlation index generation model. Obtain the current correlation index and the average optical power transmitted by the optical signal, and obtain the extinction ratio correlation index; Determine whether the extinction ratio correlation index is greater than the system preset extinction ratio correlation index. If so, establish the compensation relationship between the initial detection current and initial detection voltage of the extinction ratio correlation index and the target detection current and target detection voltage.

4. The control method for adaptive adjustment of the extinction ratio of the optical module as described in claim 3, characterized in that, In S104, the compensation flags for the initial probe current and initial probe voltage of the current electrical signal are determined, and a compensation request is synchronously sent to the compensation module, including: The controller obtains the compensation relationship between the initial detection current and initial detection voltage and the target detection current and target detection voltage, which are related to the extinction ratio correlation index. Obtain the compensation value between the extinction ratio and the current extinction ratio based on the preset extinction ratio correlation index and send it to the compensation module.

5. The control method for adaptive adjustment of the extinction ratio of the optical module as described in claim 4, characterized in that, In S105, receiving a compensation request and performing voltage compensation and current modulation on the transmitted point electrical signal includes: After the compensation module identifies the compensation value, it compensates the corresponding electrical signal under the optical signal conversion, so that the extinction ratio of the compensated optical signal is within the threshold of the preset extinction ratio correlation index. The circuit compensation process is performed to check whether the current and voltage values ​​of the compensated electrical signals are within the threshold values ​​of the target detection current and target detection voltage data. If not, the circuit compensation continues.

6. The control method for adaptive adjustment of the extinction ratio of an optical module as described in claim 1, characterized in that, The method for detecting and acquiring the average optical power transmitted by the optical signal is as follows: use an optical power meter to measure the average output optical power of the optical module laser until the average output optical power reaches a constant value during optical signal transmission, and then record the current average optical power.

7. The control method for adaptive adjustment of the extinction ratio of the optical module as described in claim 6, characterized in that, In S105, the laser output of the optical module is driven according to the preset output current and preset output voltage, and the current extinction ratio is adjusted back to the preset extinction ratio for optical signal transmission, including: After adjusting the current extinction ratio back to the preset extinction ratio, optical signal transmission under the compensated extinction ratio is performed within the preset time of the system. Once the preset time has elapsed, the average optical power transmitted by the optical signal is acquired again, and then the optical signal is converted into an electrical signal. The initial detection current and initial detection voltage of the current optical signal are then acquired to adaptively adjust the extinction ratio.

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