Control method for adaptive adjustment of extinction ratio of optical module

Abstract

The invention relates to the technical field of laser control, and discloses a control method for adaptively adjusting the 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 an optical module laser, obtaining the average optical power transmitted by the optical signal, converting the optical signal into an electric signal, and sending the electric signal to the optical module laser; acquiring an initial detection current and an initial detection voltage of the current optical signal; and S102, obtaining content data of an initial detection current and an 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 identification model. According to the invention, the system is ensured to carry out data processing and compensation in time, self-adaptive adjustment of the extinction ratio of the optical module is completed, errors generated by small-amplitude fluctuation during use of a precise instrument are solved, stable transmission of signals can be achieved through internal compensation after transmission of electric signals is interfered by the outside, and the accuracy and the reliability of the system are improved. And the stability of optical signal transmission is ensured.

Description

Technical Field

[0001] The present invention and the technical field of laser control, in particular, relate to a control method for adaptively adjusting the extinction ratio of an optical module. Background Art

[0002] In modern information networks, fiber optic communication technology has gradually replaced traditional cable transmission technology and occupied 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 to measure the performance of optical modules. Without any compensation measures, the extinction ratio will change greatly in a wide temperature range, resulting in a surge in the transmission bit error rate. In actual design, if the extinction ratio is too small, the receiving sensitivity will be reduced, and if the extinction ratio is too large, the optical eye diagram will be degraded, which will also reduce the receiving sensitivity. Therefore, in the wide temperature range (-40℃~85℃), the extinction ratio must be kept within a certain narrow range to ensure the receiving sensitivity and thus ensure the correct transmission of data.

[0003] In the past, most of the extinction ratio stabilization methods were based on open-loop control, which has the advantages of being simple to implement and being able to stabilize the extinction ratio within a wider range. However, the extinction ratio in this range has high requirements on the consistency of the laser, which is not conducive to the mass production of optical modules. The search authorization number is: CN109449740B, which discloses an optical module extinction ratio adaptive device and a control method thereof; the device can automatically correct the bias current and modulation current acting on the laser according to the change of the laser current, and the optical module maintains stable optical power and extinction ratio output under a wide temperature range.

[0004] In the prior art, since the electrical signal is interfered with externally during transmission, the signal is unstable during transmission, which indirectly causes the current or voltage to slightly fluctuate, causing the extinction ratio of the optical module to fluctuate slightly. This small fluctuation will cause a large error when the precision instrument is used, affecting its subsequent use. Summary of the invention

[0005] The purpose of the invention is to provide a control method for adaptive adjustment of the extinction ratio of an optical module, set a preset time, ensure that the system can perform data processing and compensation in time, complete the adaptive adjustment of the extinction ratio of the optical module, solve the error caused by small fluctuations in the use of precision instruments, and facilitate the stable transmission of signals through internal compensation after the electrical signal is interfered with by the outside during transmission. It aims to solve the problem in the prior art that the electrical signal is interfered with by the outside during transmission, so the signal is unstable during transmission, which indirectly causes micro-movement of its current or voltage.

[0006] The invention is implemented in this way: a control method for adaptively adjusting the extinction ratio of an optical module is applied to an optical module, and specifically comprises the following steps:

[0007] S101: receiving an optical signal transmitted by the optical module laser, obtaining an average optical power transmitted by the optical signal, converting the optical signal into an electrical signal, and obtaining an initial detection current and an initial detection voltage of the current optical signal;

[0008] S102: Obtain content data of an initial detection current and an initial detection voltage of a current optical signal, input the content data of the initial detection current and the initial detection voltage into a preset data recognition model, and obtain a 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 preset by the system to obtain an extinction ratio correlation index based on the initial detection current and the initial detection voltage;

[0010] S104: determining compensation identifiers of an initial detection current and an initial detection voltage of a current electrical signal according to the extinction ratio correlation index, and synchronously sending a compensation request to a compensation module;

[0011] S105: Receive a compensation request and perform voltage compensation and current modulation on the transmitted point electrical signal, so that the initial detection current and the initial detection voltage reach the preset output current and the preset output voltage preset by the system, drive the optical module laser output according to the output preset output current and the preset output voltage, and adjust the current extinction ratio back to the preset extinction ratio for optical signal transmission.

[0012] Further, in S101, an optical signal transmitted by an optical module is received, and an average optical power transmitted by the optical signal is obtained, including:

[0013] The optical signal input is monitored by a monitoring module, wherein the monitoring module is connected to an extinction ratio compensation circuit, and when the monitoring module monitors the optical signal input, the extinction ratio compensation circuit is triggered to start;

[0014] Detecting whether the optical signal sending end monitored by the monitoring module is the laser output of the optical module;

[0015] If the optical signal transmitting end is an optical module laser output, the conversion of the current optical signal is started 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] Furthermore, in S102, the content data of the initial detection current and the initial detection voltage are input into a preset data recognition model, including:

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

[0018] The content data of the initial detection current and the initial detection voltage of the current optical signal are obtained, and the content data are input into a plurality of data recognition models for recognition, so that the data recognition model stops after feedback of the content data of the initial detection current and the initial detection voltage of the current optical signal matches the data threshold in the data recognition model.

[0019] Further, in S103, comparing the obtained initial detection current and initial detection voltage data identification result with the preset detection current and preset detection voltage data preset by the system includes:

[0020] Acquire content data of the initial detection current and the initial detection voltage identified in the data identification model;

[0021] Obtaining preset target detection current and target detection voltage data preset in the system;

[0022] By comparing the content data with the initial detection current and the initial detection voltage, the associated current value and voltage value required to compensate the current initial detection current and the initial detection voltage are obtained. The associated current value and voltage value are calculated by the system to maintain stable optical power and extinction ratio output under the preset target detection current and target detection voltage.

[0023] Furthermore, the preset target detection current and target detection voltage data are obtained in the following manner:

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

[0025] When the temperature changes, the optimal extinction ratio output after timely responding to the external temperature is calculated to obtain the target detection current and target detection voltage data required for the optimal extinction ratio output after the external temperature is changed.

[0026] Further, obtaining an extinction ratio correlation index based on the initial detection current and the initial detection voltage includes:

[0027] Generate a current correlation index of the optical signal according to the correlation current value, the correlation voltage value, the target detection current, the target detection voltage and a preset correlation index generation model;

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

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

[0030] Further, in S104, the compensation identifiers of the initial detection current and the 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 the initial detection voltage of the extinction ratio correlation index and the target detection current and the target detection voltage;

[0032] The compensation value of the extinction ratio corresponding to the preset extinction ratio correlation index and the current extinction ratio is obtained and sent 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 converted from the optical signal, so that the extinction ratio of the compensated optical signal is within the threshold of the preset extinction ratio correlation index;

[0035] It is detected whether the current value and voltage value of the compensated electrical signal are within the threshold of the target detection current and target detection voltage data. If not, the circuit compensation is continued.

[0036] Furthermore, the average optical power transmitted by the optical signal is detected by using an optical power meter to measure the output average optical power of the optical module laser until the output average optical power reaches a constant value during the transmission of the optical signal, and then the current average optical power is recorded.

[0037] Further, in S105, according to the preset output current and the preset output voltage, the optical module laser output is driven, 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, the optical signal transmission is performed under the compensated extinction ratio within the system preset time;

[0039] When the preset time is reached, the average optical power transmitted by the optical signal is obtained again, and then the optical signal is converted into an electrical signal, and the initial detection current and initial detection voltage of the current optical signal are obtained to perform adaptive adjustment of the extinction ratio.

[0040] Compared with the prior art, the control method for adaptively adjusting the extinction ratio of an optical module provided by the invention has the following beneficial effects:

[0041] 1. Detect the optical signal sent by the optical module laser to obtain the initial detection current and initial detection voltage of the current optical signal, and then compare the initial detection current and initial detection voltage of the current optical signal 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 associated current value and voltage value required for compensation, and complete the compensation of the initial detection current and initial detection voltage through the compensation module, so that the extinction ratio of the compensated optical signal can be within the threshold of the preset optical signal extinction ratio, and set the preset time to ensure that the system can perform data processing and compensation in time, complete the adaptive adjustment of the extinction ratio of the optical module, solve the error caused by small fluctuations when precision instruments are used, and facilitate the stable transmission of the signal through internal compensation after the electrical signal is disturbed by the outside during transmission, thereby ensuring the stability of the optical signal transmission;

[0042] 2. The system obtains the external temperature of the current optical module in real time to facilitate the determination of the optimal extinction ratio output under the current external temperature. When the temperature changes within the preset time, the system promptly responds to the optimal extinction ratio output after the external temperature changes, calculates the target detection current and target detection voltage data required for the optimal extinction ratio output after the external temperature changes, and outputs them, so that the channel extinction ratio of the optical signal is always maintained at the optimal state within a wide temperature range, achieving the effect of adaptive adjustment of the extinction ratio of the optical module. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A schematic flow chart of the control method for adaptively adjusting the extinction ratio of an optical module proposed in the invention;

[0044] Figure 2 A schematic block diagram of the process of receiving an optical signal transmitted by an optical module and obtaining the average optical power transmitted by the optical signal in the control method for adaptively adjusting the extinction ratio of an optical module proposed in the invention;

[0045] Figure 3 A schematic flow chart of a method for obtaining target detection current and target detection voltage data preset in the control method for adaptively adjusting the extinction ratio of an optical module proposed in the invention;

[0046] Figure 4 A structural schematic diagram of an optical module system in a control method for adaptively adjusting the extinction ratio of an optical module 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 adaptively adjusting the extinction ratio of the optical module proposed in the invention. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the invention more clearly understood, the invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the invention and are not used to limit the invention.

[0049] The implementation of the invention is described in detail below in conjunction with specific embodiments.

[0050] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on the invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

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

[0052] S101: receiving an optical signal transmitted by the optical module laser, obtaining an average optical power transmitted by the optical signal, converting the optical signal into an electrical signal, and obtaining an initial detection current and an initial detection voltage of the current optical signal;

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

[0054] The optical signal input is monitored by a monitoring module, and the monitoring module is connected to an extinction ratio compensation circuit. When the monitoring module monitors the optical signal input, the extinction ratio compensation circuit is triggered to start;

[0055] Detect whether the optical signal sending end monitored by the monitoring module is the laser output of the optical module;

[0056] If the optical signal transmitting end is the output of the optical module laser, the conversion of the current optical signal is started according to the extinction ratio compensation circuit, and the average optical power transmitted by the optical signal is detected and obtained at the same time;

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

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

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

[0060] Obtaining content data of an initial detection current and an initial detection voltage of a current optical signal, and inputting the content data into a plurality of data recognition models for recognition, so that the data recognition model stops after feedback of the content data of an initial detection current and an initial detection voltage of the current optical signal matches a 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 preset by the system to obtain an extinction ratio correlation index based on the initial detection current and the initial detection voltage;

[0062] The step of comparing the obtained initial detection current and initial detection voltage data identification results with the preset detection current and preset detection voltage data preset by the system includes:

[0063] Acquire content data of the initial detection current and the initial detection voltage identified in the data identification model;

[0064] Obtaining preset target detection current and target detection voltage data preset in the system;

[0065] By comparing the content data of the initial detection current and the initial detection voltage, the associated current value and voltage value required to compensate the current initial detection current and the initial detection voltage are obtained. The associated current value and voltage value are calculated by the system to maintain stable optical power and extinction ratio output under the preset target detection current and target detection voltage;

[0066] S104: determining the compensation identifier of the initial detection current and the initial detection voltage of the current electrical signal according to the extinction ratio correlation index, and synchronously sending a compensation request to the compensation module;

[0067] The method of determining the compensation identifiers of the initial detection current and the initial detection voltage of the current electrical signal and synchronously sending a compensation request to the compensation module includes:

[0068] The controller obtains 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. The controller is MCU, which is the central processor of the optical module system.

[0069] Obtaining a compensation value of the extinction ratio corresponding to the preset extinction ratio correlation index and the current extinction ratio and sending it to the compensation module;

[0070] S105: receiving a compensation request and performing voltage compensation and current modulation on the electrical signal at the transmission point, so that the initial detection current and the initial detection voltage reach the preset output current and the preset output voltage preset by the system, driving the optical module laser output according to the preset output current and the preset output voltage, adjusting the current extinction ratio back to the preset extinction ratio for optical signal transmission, detecting the optical signal sent and transmitted by the optical module laser, obtaining the initial detection current and the initial detection voltage of the current optical signal, and then comparing the initial detection current and the initial detection voltage of the current optical signal with the preset detection current and the preset detection voltage data generated by the system detecting the optimal extinction ratio at the current temperature, obtaining the associated current value and the voltage value required for compensation, completing the compensation of the initial detection current and the initial detection voltage through the compensation module, so that the extinction ratio of the compensated optical signal can be within the threshold of the preset optical signal extinction ratio, completing the adaptive adjustment of the extinction ratio of the optical module, solving the error caused by small fluctuations when precision instruments are used, facilitating the stable transmission of the signal through internal compensation after the electrical signal is disturbed by the outside during transmission, and ensuring the stability of the optical signal transmission.

[0071] In this embodiment, the preset target detection current and target detection voltage data are obtained in the following manner:

[0072] The system obtains the external temperature of the current 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 external temperature, and calculates the target detection current and target detection voltage data required for the optimal extinction ratio output after the external temperature. The system obtains the external temperature of the current optical module in real time, which is convenient for determining the optimal extinction ratio output at the current external temperature, and when the temperature changes within a preset time, it promptly responds to the optimal extinction ratio output after the external temperature, calculates and outputs the target detection current and target detection voltage data required for the optimal extinction ratio output after the external temperature, so that the channel extinction ratio of the optical signal is always maintained in the optimal state within a wide temperature range, achieving the effect of adaptive adjustment of the extinction ratio of the optical module.

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

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

[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 converted from the optical signal, so that the extinction ratio of the compensated optical signal is within the threshold of the preset extinction ratio correlation index;

[0078] It is detected whether the current value and voltage value of the compensated electrical signal are within the threshold of the target detection current and target detection voltage data. If not, the circuit compensation is continued.

[0079] In this embodiment, the average optical power transmitted by the optical signal is detected by using an optical power meter to measure the output average optical power of the optical module laser until the output average optical power reaches a constant value during the optical signal transmission, and then the current average optical power is recorded.

[0080] In S105 of this embodiment, the optical module laser output is driven according to the preset output current and the 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, the optical signal transmission is performed under the compensated extinction ratio within the system preset time;

[0082] When the preset time is reached, the average optical power transmitted by the optical signal is obtained again, and then the optical signal is converted into an electrical signal, and the initial detection current and initial detection voltage of the current optical signal are obtained to perform adaptive adjustment of 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 to monitor and compensate the current optical signal. At the same time, it monitors the external temperature to ensure that the extinction ratio of the optical module is kept within a certain narrow range within a wide temperature range (-40℃~85℃) to ensure the 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, and the request unit sends commands for subsequent signal compensation.

[0085] The technical solution detects the optical signal transmitted by the optical module laser to obtain the initial detection current and initial detection voltage of the current optical signal, and then compares the initial detection current and initial detection voltage of the current optical signal 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 associated current value and voltage value required for compensation, and completes the compensation of the initial detection current and the initial detection voltage through the compensation module, so that the extinction ratio of the compensated optical signal can be within the threshold of the preset optical signal extinction ratio. The system also obtains the external temperature of the current optical module in real time to facilitate determining the optimal extinction ratio output at the current external temperature, and when the temperature changes within the preset time, promptly responds to the optimal extinction ratio output after the external temperature, calculates and outputs the target detection current and target detection voltage data required for the optimal extinction ratio output after the partial temperature, so that the channel extinction ratio of the optical signal is always maintained in the optimal state within a wide temperature range, achieving the effect of adaptive adjustment of the extinction ratio of the optical module.

[0086] Since the system sets a preset time, it ensures that the system can process and compensate data in a timely manner and complete the adaptive adjustment of the extinction ratio of the optical module, which solves the error caused by small fluctuations when precision instruments are used. It is convenient for the electrical signal to be transmitted by external interference through internal compensation to achieve stable signal transmission, thereby ensuring the stability of optical signal transmission.

[0087] In this embodiment, the entire operation process can be controlled by a computer, and with the addition of a PLC, etc., automated operation control can be achieved. In each operation link, sensors can be set up to provide signal feedback to achieve sequential execution of steps. These are all common knowledge of current automated control and will not be described in detail in this embodiment.

[0088] The above description is only 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 principle of the invention should be included in the scope of protection of the invention.

Claims

1. A control method for adaptively adjusting the extinction ratio of an optical module, characterized in that: Applied to optical modules, specifically including the following steps: S101: receiving an optical signal transmitted by the optical module laser, obtaining an average optical power transmitted by the optical signal, converting the optical signal into an electrical signal, and obtaining an initial detection current and an initial detection voltage of the current optical signal; S102: Obtain content data of an initial detection current and an initial detection voltage of a current optical signal, input the content data of the initial detection current and the initial detection voltage into a preset data recognition model, and obtain a data recognition result output by the data recognition model based on the content data; S103: Compare the obtained initial detection current and initial detection voltage data identification results with the preset detection current and preset detection voltage data preset by the system to obtain an extinction ratio correlation index based on the initial detection current and the initial detection voltage; S104: determining compensation identifiers of an initial detection current and an initial detection voltage of a current electrical signal according to the extinction ratio correlation index, and synchronously sending a compensation request to a compensation module; S105: Receive a compensation request and perform voltage compensation and current modulation on the transmitted point electrical signal, so that the initial detection current and the initial detection voltage reach the preset output current and the preset output voltage preset by the system, drive the optical module laser output according to the output preset output current and the preset output voltage, and adjust the current extinction ratio back to the preset extinction ratio for optical signal transmission.

2. The control method for adaptively adjusting the extinction ratio of an optical module according to claim 1, characterized in that: In S101, an optical signal transmitted by an optical module is received, and an average optical power transmitted by the optical signal is obtained, including: The optical signal input is monitored by a monitoring module, wherein the monitoring module is connected to an extinction ratio compensation circuit, and when the monitoring module monitors the optical signal input, the extinction ratio compensation circuit is triggered to start; Detecting whether the optical signal sending end monitored by the monitoring module is the laser output of the optical module; If the optical signal transmitting end is an optical module laser output, the conversion of the current optical signal is started 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.

3. The control method for adaptively adjusting the extinction ratio of an optical module according to claim 2, characterized in that: In S102, the content data of the initial detection current and the initial detection voltage are input into a preset data recognition model, including: Acquire multiple data recognition models, and sort the data thresholds of the multiple data recognition models in ascending order; The content data of the initial detection current and the initial detection voltage of the current optical signal are obtained, and the content data are input into a plurality of data recognition models for recognition, so that the data recognition model stops after feedback of the content data of the initial detection current and the initial detection voltage of the current optical signal matches the data threshold in the data recognition model.

4. The control method for adaptively adjusting the extinction ratio of an optical module according to claim 3, characterized in that: In S103, comparing the obtained initial detection current and initial detection voltage data identification results with the preset detection current and preset detection voltage data preset by the system includes: Acquire content data of the initial detection current and the initial detection voltage identified in the data identification model; Obtaining preset target detection current and target detection voltage data preset in the system; By comparing the content data with the initial detection current and the initial detection voltage, the associated current value and voltage value required to compensate the current initial detection current and the initial detection voltage are obtained. The associated current value and voltage value are calculated by the system to maintain stable optical power and extinction ratio output under the preset target detection current and target detection voltage.

5. The control method for adaptively adjusting the extinction ratio of an optical module according to claim 4, characterized in that: The preset target detection current and target detection voltage data are obtained as follows: The system obtains the external temperature of the current optical module in real time and determines the optimal extinction ratio output under the current external temperature; When the temperature changes, the optimal extinction ratio output after timely responding to the external temperature is calculated to obtain the target detection current and target detection voltage data required for the optimal extinction ratio output after the external temperature is changed.

6. The control method for adaptively adjusting the extinction ratio of an optical module according to claim 5, characterized in that: Obtain extinction ratio correlation indices based on initial detection current and initial detection voltage, including: Generate a current correlation index of the optical signal according to the correlation current value, the correlation voltage value, the target detection current, the target detection voltage and a preset correlation index generation model; Obtain the current correlation index and the average optical power transmitted by the optical signal to obtain the extinction ratio correlation index; It is determined whether the extinction ratio correlation index is greater than the system preset extinction ratio correlation index. If so, a compensation relationship between the initial detection current, initial detection voltage and the target detection current, target detection voltage of the extinction ratio correlation index is established.

7. The control method for adaptively adjusting the extinction ratio of an optical module according to claim 6, characterized in that: In S104, the compensation identifiers of the initial detection current and the initial detection 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 the initial detection voltage of the extinction ratio correlation index and the target detection current and the target detection voltage; The compensation value of the extinction ratio corresponding to the preset extinction ratio correlation index and the current extinction ratio is obtained and sent to the compensation module.

8. The control method for adaptively adjusting the extinction ratio of an optical module according to claim 7, characterized in that: In S105, receiving a compensation request and performing voltage compensation and current modulation on the transmitted point electrical signal, including: After the compensation module identifies the compensation value, it compensates the corresponding electrical signal converted from the optical signal, so that the extinction ratio of the compensated optical signal is within the threshold of the preset extinction ratio correlation index; It is detected whether the current value and voltage value of the compensated electrical signal are within the threshold of the target detection current and target detection voltage data. If not, the circuit compensation is continued.

9. The control method for adaptively adjusting the extinction ratio of an optical module according to claim 2, characterized in that: The method for detecting and obtaining the average optical power transmitted by the optical signal is as follows: use an optical power meter to measure the output average optical power of the optical module laser until the output average optical power during the optical signal transmission reaches a constant value, and then record the current average optical power.

10. The control method for adaptively adjusting the extinction ratio of an optical module according to claim 9, characterized in that: In S105, according to the preset output current and the preset output voltage, the optical module laser is driven to output, 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, the optical signal transmission is performed under the compensated extinction ratio within the system preset time; When the preset time is reached, the average optical power transmitted by the optical signal is obtained again, and then the optical signal is converted into an electrical signal, and the initial detection current and initial detection voltage of the current optical signal are obtained to perform adaptive adjustment of the extinction ratio.

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