WO2023201902A1

WO2023201902A1 - Method and system for sending multi-mode pilot tone signal, and method and system for receiving multi-mode pilot tone signal

Info

Publication number: WO2023201902A1
Application number: PCT/CN2022/104145
Authority: WO
Inventors: 高建河; 祝成军; 朱全彪; 赵佳丽
Original assignee: 武汉光迅科技股份有限公司
Priority date: 2022-04-20
Filing date: 2022-07-06
Publication date: 2023-10-26
Also published as: CN116961768A

Abstract

The present disclosure relates to a method and system for sending a multi-mode pilot tone signal, and a method and system for receiving a multi-mode pilot tone signal. The sending method comprises: a micro control unit configuring multi-mode pilot tone data, so as to control the amplitude and frequency of a pilot tone signal, and outputting a pilot tone digital signal; an external pilot tone hardware circuit converting the pilot tone digital signal into a pilot tone analog signal; and superposing the pilot tone analog signal on a high-speed data signal of a high-speed laser, so as to form a pilot tone signal channel. In the present disclosure, the selection of various pilot tone modes can be solved by using only one product model, such that the problem of management of far-end optical modules is solved, production costs and inventory pressure are reduced, and a pilot tone mode can be flexibly switched without the need for replacing an optical module on site, thereby reducing the costs for operation and maintenance.

Description

A method and system for transmitting and receiving multi-mode top-adjusting signals

Technical field

The present disclosure relates to the field of optical communication technology, and in particular, to a method and a transmission and reception system for transmitting and receiving multi-mode topping signals.

Background technique

The current 5G fronthaul network requires high bandwidth, low latency and low cost. Since the coverage of 5G base stations is small, more base stations need to be added in number and density than 4G base stations, which has a great impact on the number of optical fibers in the base stations. need. As the cost of new optical fiber deployment increases, the original network optical fiber resources are scarce and unable to meet the demand for optical fiber resources. Therefore, the industry has proposed a 12-wavelength semi-active fronthaul solution Open-WDM (Open Wavelength Division Multiplexing, wavelength division multiplexing), among which China Mobile's MWDM and China Telecom's LWDM solutions are the main ones. In order to realize the remote optical module For management, the semi-active fronthaul optical module adopts two top-adjusting methods: pure amplitude modulation ASK and multi-carrier frequency amplitude modulation ASK. The multi-carrier frequency amplitude modulation method allocates different carrier frequencies to each different wavelength, so that on the trunk fiber, when 12 wavelengths work at the same time, the same photodetector PD can be used to identify different wavelengths based on different frequencies.

When the current semi-active fronthaul solution adopts a pure AM topping solution, the status of each wavelength cannot be monitored on the trunk fiber. When using a multi-carrier frequency amplitude modulation scheme, the same PD can be used on the backbone fiber to monitor the status of 12 wavelengths at the same time. Although multi-carrier frequency amplitude modulation has certain functional advantages, the specific implementation will bring about increased complexity of hardware circuits and software, leading to an increase in costs and technical thresholds, and affecting the popularization of the industry chain. Moreover, the hardware circuits and software of pure amplitude modulation and multi-carrier frequency modulation are different, and different PCBA (Printed Circuit Board Assembly, printed circuit board assembly) and component tables need to be used during production and processing, resulting in an increase in product models and Inventory pressure is not conducive to cost reduction. In network applications, when changing the top adjustment method, you need to go to the site to replace the optical module, which affects normal business and increases maintenance costs. In addition, the current top-down rate of Open-WDM is only 1Kbps, which is low and cannot support larger-capacity data interaction. The real-time interaction is also poor and cannot meet the high-speed requirements of several thousand Kbps in some scenarios.

In view of the above situation, how to overcome the shortcomings of the existing technology and solve the above technical problems is a difficult problem to be solved in this technical field.

Contents of the invention

In view of the above defects or improvement needs of the existing technology, the present disclosure provides a multi-mode topping signal sending and receiving method and sending and receiving system, using the same PCBA to support pure amplitude modulation ASK, multi-carrier frequency amplitude modulation ASK, and frequency modulation FSK. A topping mode. The working mode is selected by configuring the corresponding parameters through the software, so that only one product model is needed to solve the selection of multiple top-adjusting modes, thereby solving the problem of remote optical module management, reducing production costs and inventory pressure, and eliminating If you need to replace the optical module on site, you can flexibly switch to the top adjustment method, which reduces operation and maintenance costs.

The embodiments of the present disclosure adopt the following technical solutions:

In a first aspect, the present disclosure provides a method for sending a multi-mode topping signal, including:

The micro control unit (MCU) configures the multi-mode top-adjusting data, controls the amplitude and frequency of the top-adjusting signal, and outputs the top-adjusting digital signal;

Convert the top-adjusting digital signal into a top-adjusting analog signal through an external top-adjusting hardware circuit;

The top-adjusting analog signal is superimposed on the high-speed data signal emitted by the high-speed laser to form a top-adjusting signal channel.

Further, the micro-control unit configures multi-mode top-adjusting data, controls the amplitude and frequency of the top-adjusting signal, and outputs the top-adjusting digital signal, specifically including:

The top adjustment mode selection and parameter configuration module of the micro control unit obtains the top adjustment data configured by the micro control unit, and determines the current top adjustment mode and top adjustment parameters based on the top adjustment data. Among them, the top adjustment mode includes the pure amplitude modulation ASK mode. , one or more of multi-carrier amplitude modulation ASK mode and frequency modulation FSK mode;

The top adjustment data encoding module of the micro control unit encodes the top adjustment data, and outputs the encoded data to the top adjustment digital signal generation module of the micro control unit to control the amplitude of the carrier frequency;

The carrier frequency generation module of the micro control unit sends the set frequency to the top-adjusting digital signal generation module of the micro control unit;

The topping digital signal generation module of the micro control unit superimposes the amplitude of the topping data and the carrier frequency to output a topping digital signal with controlled amplitude.

In a second aspect, the present disclosure provides a method for receiving multi-mode topping signals, including:

The high-speed detector outputs the slow-speed top-adjustment signal to the top-adjustment analog signal extraction unit;

The top-adjusting analog signal extraction unit amplifies and filters the top-adjusting signal, extracts it, and sends it to the micro-control unit;

The micro control unit decodes the acquired top adjustment signal and recovers the original top adjustment data.

Further, the micro-control unit decodes the acquired top-adjusting signal and recovers the original top-adjusting data, which specifically includes:

The amplitude/frequency processing module of the micro control unit identifies one or more of the amplitude, envelope size, and frequency value according to the configured top adjustment mode; among which, the top adjustment mode includes pure amplitude modulation ASK mode and multi-carrier frequency amplitude modulation ASK mode. and one or more of the FM FSK modes;

The topping data decoding and recovery module of the micro control unit decodes and recovers the original topping data based on the identification results of the amplitude/frequency processing module.

Further, the top adjustment data decoding and recovery module of the micro control unit decodes and recovers the original top adjustment data according to the identification results of the amplitude/frequency processing module, which specifically includes:

If the determined top-adjusting mode is a pure amplitude modulation ASK mode, the

numbers

1 and 0 will be identified based on the amplitude of the analog signal, thereby restoring the original debugging data;

If the determined top-up mode is the multi-carrier amplitude modulation ASK mode, the original top-down data is restored according to the amplitude of the analog signal, and the frequency value of the carrier frequency is identified. Based on the corresponding relationship between frequency and wavelength, the currently received signal is identified. wavelength of light;

If the determined top adjustment mode is the frequency modulation FSK mode, based on the predefined rules, the

values

1 and 0 are restored according to the identified frequency values, thereby restoring the original debugging data.

In a third aspect, the present disclosure provides a multi-mode top-adjusting signal sending system, including a microcontrol unit, an external top-adjusting hardware circuit, a high-speed laser, and a high-speed data driver chip, wherein:

The micro-control unit is used to complete the configuration of multi-mode top-adjusting data, control the amplitude and frequency of the top-adjusting signal, and output the top-adjusting digital signal;

The high-speed data driver chip transmits high-speed data signals to the high-speed laser;

The external top-adjusting hardware circuit is used to convert the top-adjustment digital signal output by the micro-control unit into a top-adjustment analog signal, and superimpose it on the high-speed data signal of the high-speed laser to form a top-adjustment signal channel.

Further, the micro-control unit includes a top-adjusting mode selection and parameter configuration module, a top-tuning data encoding module, a carrier frequency generation module, and a top-tuning digital signal generation module, wherein:

The top-adjustment mode selection and parameter configuration module is used to obtain the top-adjustment data configured by the MCU, and determine the current top-adjustment mode and top-adjustment parameters based on the top-adjustment data. Among them, the top-adjustment mode includes pure amplitude modulation ASK mode, multiple One or more of carrier frequency amplitude modulation ASK mode and frequency modulation FSK mode;

The top-adjusting data encoding module is used to encode the top-adjusting data, and outputs the encoded data to the top-adjusting digital signal generation module to control the amplitude of the carrier frequency;

The carrier frequency generation module is used to send the set frequency to the top-adjusting digital signal generation module;

The top-adjusting digital signal generating module is used to superimpose the amplitude of the top-adjusting data and the carrier frequency to output a top-adjusting digital signal with controlled amplitude.

Further, the micro control unit includes a first micro control unit and a second micro control unit, and the first micro control unit and the second micro control unit are connected through a data interface, wherein:

The first micro control unit is used to obtain the configured multi-mode top adjustment data, and write the configured top adjustment data into the second micro control unit;

The second micro-control unit is used to receive the configuration of multi-mode top-adjusting data and realize the sending and analysis of the amplitude and frequency information of the top-adjusting signal.

In a fourth aspect, the present disclosure provides a multi-mode top-adjusting signal receiving system, including a microcontrol unit, an top-adjusting analog signal extraction unit, a high-speed detector, and a high-speed data driver chip, wherein:

The high-speed detector is used to convert the optical signal into an electrical signal, and send the converted high-speed data electrical signal to the receiving end of the high-speed data driver chip; the high-speed detector is also used to output the slow speed adjustment signal to The top-adjusting analog signal extraction unit;

The top-adjusting analog signal extraction unit is used to amplify and filter the top-adjusting signal, extract it, and send it to the micro-control unit;

The micro control unit is used to decode the acquired top adjustment signal and recover the original top adjustment data.

Further, the micro-control unit includes an amplitude/frequency processing module and a top-adjusting data decoding and recovery module, wherein:

The amplitude/frequency processing module is used to identify one or more of amplitude, envelope size, and frequency value according to the configured top adjustment mode; wherein the top adjustment mode includes a pure amplitude modulation ASK mode and a multi-carrier frequency amplitude modulation ASK mode. and one or more of the FM FSK modes;

The topping data decoding and recovery module decodes and recovers the original topping data according to the identification result of the amplitude/frequency processing module.

Compared with the existing technology, the beneficial effect of the present disclosure is that through the combination of various modules inside the micro-control unit and the normalized external top-adjusting hardware circuit, three types of top-level adjustment are realized: pure amplitude modulation ASK, multi-carrier frequency amplitude modulation ASK, and frequency modulation FSK. Mode function. That is to say, this disclosure only needs to use the same PCBA to support three top-adjusting modes: pure AM ASK, multi-carrier AM ASK, and frequency modulation FSK. The working mode is selected by configuring the corresponding parameters through software, so that only One product model solves the choice of multiple top-adjusting modes, thereby solving the problem of remote optical module management, reducing production costs and inventory pressure. It can flexibly switch the top-adjusting modes without replacing optical modules on site, reducing costs. Operation and maintenance costs. In addition, the rate adjustment of the present disclosure can support rate configuration from 1 kbps to several thousand Kbps according to customer needs.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present disclosure more clearly, the drawings required to be used in the embodiments of the present disclosure will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 is a flow chart of a method for sending a multi-mode topping signal provided in Embodiment 1 of the present disclosure;

Figure 2 is an expanded flow chart of step 100 in Embodiment 1 of the present disclosure;

Figure 3 is a flow chart of a method for receiving a multi-mode topping signal provided in Embodiment 2 of the present disclosure;

Figure 4 is an expanded flow chart of step 220 in Embodiment 2 of the present disclosure;

Figure 5 is a schematic structural diagram of a multi-mode topping signal transmitting and receiving system provided in Embodiment 3 of the present disclosure;

Figure 6 is a schematic diagram of the top-adjusting digital signal generation of the micro control unit provided in Embodiment 3 of the present disclosure;

Figure 7 is a schematic diagram of the top-adjusting analog signal generation provided by Embodiment 3 of the present disclosure;

Figure 8 is a functional schematic diagram of adjusting the receiving direction provided by Embodiment 3 of the present disclosure;

Figure 9 is a schematic diagram of the corresponding relationship between carrier frequency and wavelength provided in Embodiment 3 of the present disclosure;

Figure 10 is a schematic structural diagram of another system for transmitting and receiving multi-mode topping signals provided in Embodiment 3 of the present disclosure.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present disclosure more clear, the present disclosure will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present disclosure and are not intended to limit the present disclosure.

This disclosure is an architecture of a specific functional system. Therefore, in the specific embodiments, the functional logical relationship of each structural module is mainly explained, and the specific software and hardware implementation methods are not limited.

In addition, the technical features involved in the various embodiments of the present disclosure described below can be combined with each other as long as they do not conflict with each other. The present disclosure will be described in detail below with reference to the accompanying drawings and embodiments.

Example 1:

As shown in FIG. 1 , Embodiment 1 of the present disclosure provides a method for sending a multi-mode TAD signal. The method includes the following steps.

Step 100: The micro control unit configures the multi-mode top adjustment data, controls the amplitude and frequency of the top adjustment signal, and outputs the top adjustment digital signal.

Step 110: Convert the top-adjustment digital signal into a top-adjustment analog signal through an external top-adjustment hardware circuit. Preferably, the external top adjustment hardware circuit is a SINK current source conversion circuit composed of an operational amplifier and an N-MOSFET.

Step 120: The top-adjusting analog signal is superimposed on the high-speed data signal of the high-speed laser to form a top-adjusting signal channel. Preferably, the top-adjusting analog signal can be superimposed on the high-speed data signal after passing through an inductor. The function of the inductor is to isolate the high-speed data signal on the laser.

The above steps configure the multi-mode top adjustment data through the micro control unit, thereby enabling the transmission of the multi-mode top adjustment signal.

Specifically, as shown in Figure 2, step 100 (the microcontrol unit configures the multi-mode top adjustment data, controls the amplitude and frequency of the top adjustment signal, and outputs the top adjustment digital signal) can be refined into the following steps.

Step 101: The top-adjustment mode selection and parameter configuration module of the micro control unit obtains the top-adjustment data configured by the device's main CPU, and determines the current top-adjustment mode and top-adjustment parameters based on the top-adjustment data. Among them, the top-adjusting mode includes one or more of pure amplitude modulation ASK mode, multi-carrier frequency amplitude modulation ASK mode and frequency modulation FSK mode; the top-adjusting parameters include one of the rate, amplitude, carrier frequency and other parameters of the top-adjusting signal. or more.

Step 102: The top adjustment data encoding module of the micro control unit encodes the top adjustment data, and outputs the encoded data to the top adjustment digital signal generation module of the micro control unit to control the amplitude of the carrier frequency. This step is used to control the amplitude of the topping signal.

Step 103: The carrier frequency generation module of the micro control unit sends the set frequency to the top-adjusting digital signal generation module of the micro control unit. This step is used to control the carrier frequency of the topping signal.

Step 104: The top-adjusting digital signal generation module of the micro control unit superimposes the amplitude of the top-adjusting data and the carrier frequency to output a top-adjusting digital signal with controlled amplitude. In this step, the amplitude of step 102 and the carrier frequency of step 103 are superimposed and output to obtain an amplitude-controlled topping digital signal.

After obtaining the topping digital signal with controlled amplitude, the topping digital signal can be converted into a topping analog signal through step 110, and the topping analog signal can be superimposed on the high-speed data signal of the high-speed laser through step 120. , forming a top-adjusting signal channel.

To sum up, the sending method of this embodiment can realize the three tuning modes of pure amplitude modulation ASK, multi-carrier frequency amplitude modulation ASK, and frequency modulation FSK through the combination of various modules inside the micro control unit and the normalized external tuning hardware circuit. function, thus only one product model is needed to solve the choice of multiple top-adjusting modes, thereby solving the problem of remote optical module management, reducing production costs and inventory pressure, and allowing flexible switching of top-adjusting modes without the need for on-site replacement of optical modules. way, reducing operation and maintenance costs.

Example 2:

As shown in FIG. 3 , Embodiment 2 of the present disclosure provides a method for receiving a multi-mode TIM signal. The method includes the following steps.

Step 200: The high-speed detector outputs the slow top adjustment signal to the top adjustment analog signal extraction unit.

Step 210: The top-adjusting analog signal extraction unit amplifies and filters the top-adjusting signal, extracts it, and sends it to the micro-control unit.

Step 220: The micro control unit decodes the acquired top adjustment signal and recovers the original top adjustment data.

The above steps use the micro control unit to perform decoding and recovery of the multi-mode topping signal, thereby enabling reception of the multi-mode topping signal.

Specifically, as shown in Figure 4, step 220 (the microcontrol unit decodes the acquired top adjustment signal to recover the original top adjustment data) can be refined into the following steps.

Step 221: The amplitude/frequency processing module of the micro control unit identifies one or more of amplitude, envelope size, and frequency value according to the configured top adjustment mode; where the top adjustment mode includes pure amplitude modulation ASK mode, multi-carrier frequency One or more of AM ASK mode and FM FSK mode.

Step 222: The top adjustment data decoding and recovery module of the micro control unit decodes and recovers the original top adjustment data according to the identification result of the amplitude/frequency processing module. Specifically, if the determined top-adjusting mode is pure amplitude modulation ASK mode, the

numbers

1 and 0 are identified according to the amplitude of the analog signal, thereby restoring the original debugging data; if the determined top-adjusting mode is multi-carrier frequency amplitude modulation In ASK mode, the original tuning data is restored according to the amplitude of the analog signal, and the frequency value of the carrier frequency is identified at the same time. According to the corresponding relationship between frequency and wavelength, the currently received optical wavelength is identified; if the determined tuning mode is frequency modulation In FSK mode, based on predefined rules, the

values

Through the above method, this embodiment can realize the reception of top-tuning signals, and supports the reception and decoding of three top-tuning modes: pure amplitude modulation ASK, multi-carrier frequency amplitude modulation ASK, and frequency modulation FSK. Therefore, only one product model is needed to solve the choice of multiple top-adjusting modes, thereby solving the problem of remote optical module management, reducing production costs and inventory pressure, and the top-adjusting mode can be flexibly switched without on-site replacement of optical modules. , reduce operation and maintenance costs.

Example 3:

As shown in Figure 5, Embodiment 3 of the present disclosure provides a multi-mode top-adjusting signal sending and receiving system, including a micro-control unit, an external top-adjusting hardware circuit, a high-speed laser, a high-speed data driver chip, and a top-adjusting analog signal extraction unit. and high-speed detectors. Among them, the micro control unit can be divided into a first micro control unit MCU1 and a second micro control unit MCU2. The first micro control unit MCU1 and the second micro control unit MCU2 are connected through a data interface; the first micro control unit MCU1 is used to obtain equipment The main CPU configures the multi-mode top adjustment data, and writes the configured top adjustment data into the second micro control unit MCU2; the second micro control unit MCU2 is used to receive the configuration of the multi-mode top adjustment data, and realize the adjustment Transmission and analysis of signal amplitude and frequency information.

After the optical module is inserted into the device, the device communicates with the optical module MCU1 through the I2C1 interface, monitors the working status of the optical module, adjusts and configures the working parameters of the optical module, and can also send and receive top-level data frames for the top-level optical module. The top adjustment mechanism of the second micro control unit MCU2 is configured through the main CPU of the device, and then stored in the first micro control unit MCU1. The configuration is then sent to the computer through the data interface between the first micro control unit MCU1 and the second micro control unit MCU2 The second micro control unit MCU2. In most cases, no changes are made midway after the top adjustment mechanism is configured. In this embodiment, the user can also change the top adjustment mechanism midway as needed, such as changing from pure AM ASK to multi-carrier AM ASK, or from multi-carrier AM ASK to frequency modulation FSK.

The basic working process of the multi-mode top adjustment in this embodiment is as follows: after the optical module is powered on and initialized, it works in a certain top adjustment mode by default. For example, it works on pure AM ASK by default. The main CPU of the device can configure the top adjustment mode to multi-carrier frequency amplitude modulation ASK or frequency modulation FSK mode through the I2C1 interface. After the top-adjustment mode configuration is completed, the second micro-control unit MCU2 starts to send and receive top-adjustment signals according to the selected mode. Among them, the method of multi-carrier frequency amplitude modulation is to superimpose a waveform and amplitude of a specified frequency when sending amplitude 1, and represent amplitude 1 through the envelope amplitude. The frequency modulation FSK method has better working stability and anti-interference ability. This frequency modulation method uses different frequencies to represent the

number

0 and 1. For example, the 1KHz frequency represents the number 0, and the 10KHz frequency represents the number 1.

Based on the system provided above, this embodiment also divides the system into two subsystems: sending and receiving. The two subsystems are described below.

Referring to FIG. 5 , the transmission subsystem provided by this embodiment (that is, the multi-mode top-adjusting signal transmission system) includes a microcontrol unit, an external top-adjusting hardware circuit, a high-speed laser, and a high-speed data driver chip. Among them, the micro-control unit is used to complete the configuration of multi-mode topping data, realize the control of the topping signal amplitude and frequency, and output the topping digital signal; the high-speed data driver chip transmits the high-speed data signal to the high-speed On the laser; the external top-adjusting hardware circuit is used to convert the top-adjusting digital signal output by the micro-control unit into a top-adjusting analog signal, and superimposes it on the high-speed data signal emitted by the high-speed laser after passing through an inductor. Form a topping signal channel.

In this preferred embodiment, the micro-control unit of the sending subsystem includes a tuning mode selection and parameter configuration module, a tuning data encoding module, a carrier frequency generation module, and a tuning digital signal generation module. Among them, the top-adjustment mode selection and parameter configuration module is used to obtain the top-adjustment data configured by the main CPU of the device, and determine the current top-adjustment mode and top-adjustment parameters based on the top-adjustment data, where the top-adjustment mode includes pure amplitude modulation One or more of ASK mode, multi-carrier amplitude modulation ASK mode and frequency modulation FSK mode. The top-adjusting data encoding module is used to encode the top-adjusting data, and outputs the encoded data to the top-adjusting digital signal generation module to control the amplitude of the carrier frequency. The carrier frequency generating module is used to send the set frequency to the top-adjusting digital signal generating module. The top-adjusting digital signal generating module is used to superimpose the amplitude of the top-adjusting data and the carrier frequency to output a top-adjusting digital signal with controlled amplitude.

The following describes the multi-mode topping transmission (TX) function of the system: In the topping sending direction, the device writes the topping data frame to be sent into the storage area of the first microcontrol unit MCU1 (TX/RX topping) through the I2C1 interface. In data storage 1), after the data frame is written, the completion flag is set to trigger the first microcontrol unit MCU1 to read the data. Then the first micro control unit MCU1 writes the top adjustment data into the storage area of the second micro control unit MCU2 through the internal data interface 2. After the data frame is written, the top adjustment data sending function of the second micro control unit MCU2 is triggered, as shown in Figure 6 As shown, it is a schematic diagram of the top-adjusting digital signal generation of the micro control unit. The second micro-control unit MCU2 first determines the current top-adjustment mode and top-adjustment rate through the top-adjustment mode selection and parameter configuration module, and then uses the top-adjustment data encoding module. The topping data is encoded and the encoded data is output to the topping digital signal generation module to control the amplitude of the carrier frequency. At the same time, the carrier frequency generation module also sends the set frequency to the topping digital signal generation module. In the topping digital signal generation module, the amplitude of the topping data and the carrier frequency are superimposed in a certain way to output a topping digital signal with controlled amplitude.

As shown in Figure 7, it is a schematic diagram of the top-adjusting analog signal generation. After the top-adjusting digital signal generation module outputs the top-adjusting digital signal with a controlled amplitude, the top-adjusting digital signal passes through the operational amplifier and external amplifier of the second microcontrol unit MCU2. The SINK current source conversion circuit composed of N-MOSFET (that is, the external top-adjusting hardware circuit) is converted into a top-adjusting analog signal. The final top-adjusting analog signal passes through an inductor and is superimposed on the high-speed signal of the original laser to form a top-adjusting signal. aisle. The purpose of the inductor is to isolate the high-speed data signals on the laser.

Referring to Figure 5, the receiving subsystem (that is, the receiving system for multi-mode topping signals) provided in this embodiment includes a micro control unit, a topping analog signal extraction unit, a high-speed detector and a high-speed data driver chip, wherein the high-speed The detector is used to convert the optical signal into an electrical signal, and send the converted high-speed data electrical signal to the receiving end of the high-speed data driver chip; the high-speed detector is also used to output the slow speed adjustment signal to the adjustment signal. The top analog signal extraction unit; the top analog signal extraction unit is used to amplify and filter the top signal, extract it, and send it to the micro control unit; the micro control unit is used to decode the acquired top signal Restore the original topping data.

In this preferred embodiment, the micro-control unit includes an amplitude/frequency processing module and a top-adjusted data decoding and recovery module, wherein the amplitude/frequency processing module is used to identify the amplitude and envelope size according to the configured top-adjusted mode. , one or more of the frequency values; wherein, the topping mode includes one or more of the pure amplitude modulation ASK mode, the multi-carrier amplitude modulation ASK mode and the frequency modulation FSK mode; the topping data decoding and recovery module is based on the amplitude /The identification result of the frequency processing module is used to decode and recover the original topping data.

The following describes the multi-mode top-receiving (RX) function of the system: As shown in Figure 8, in the top-receiving direction, the high-speed detector PD converts the optical signal into an electrical signal, and the high-speed data electrical signal is directly sent to the receiving driver chip. end. The slow top-adjusting signal is output from the photocurrent monitoring pin of the high-speed detector PD and sent to the top-adjusting analog signal extraction unit. In the extraction unit, the weak top-adjustment signal is amplified by the amplifier according to the top-adjustment mode, filtered and extracted, and then sent to the amplitude/frequency processing module of the second micro-control unit MCU2. According to the originally configured topping mode, the amplitude/frequency processing module identifies one or more of the amplitude, envelope size, and frequency value, and then outputs the restored digital topping signal through the topping data decoding and recovery module.

When determining the amplitude and frequency of the analog signal, the preset operating mode is used. If it is a pure amplitude modulation ASK mode, the decision is made only based on the amplitude of the analog signal, and the

numbers

1 and 0 are identified. Since there is only amplitude, the wavelength ID cannot be identified.

If it is a multi-carrier amplitude modulation ASK mode, the original modulation data is restored based on the amplitude of the analog signal, and the frequency value of the carrier frequency is identified. Based on the corresponding relationship between frequency and wavelength, the currently received optical wavelength ID is identified. For example, the China Mobile Open-WDM specification stipulates that the corresponding relationship between carrier frequency and wavelength is shown in Figure 9. You can refer to the corresponding relationship in Figure 9 to obtain the wavelength corresponding to the frequency.

If it is frequency modulation FSK mode, according to the predefined rules, the

values

1 and 0 are restored according to the identified frequency value, and the original debugging data is restored. For example: a frequency of 1KHz represents the number 1, and a frequency of 10KHz represents the number 0. In addition, different frequency combinations can be specified for different wavelengths. For example: the frequency combination corresponding to the wavelength 1267nm is 1KHz/10KHz, 1KHz represents the number 1, and 10KHz represents the number 0. The frequency combination corresponding to the wavelength 1274nm is 15KHz/24KHz, where 15KHz represents the number 1 and 24KHz represents the number 0. In this way, at the receiving end, as long as the frequency is identified as 10KHz, it corresponds to the wavelength of 1267nm, and if there is 24KHz in the frequency, it corresponds to the wavelength of 1274nm. This enables identification of data and wavelength ID at the same time.

With the advancement of the manufacturing process and the improvement of integration of the micro control unit MCU, in another implementation of this embodiment, the functions of the first micro control unit MCU1 and the second micro control unit MCU2 can be merged into one micro control unit MCU. To complete, for example, as shown in Figure 10, it merges the I2C1 interface of the original first micro-control unit MCU1 with the device and the TX/RX adjustment data storage 1 module into the original second micro-control unit MCU2, so that it can save The original internal data interfaces of the first micro control unit MCU1 and the second micro control unit MCU2 are removed, and directly connected to each functional module through the TX/RX top data storage 1 module. The functions of other functional modules are consistent with the functions of the original second micro-control unit MCU2, and will not be described again here.

To sum up, this embodiment can complete the function of interacting with the main CPU of the device through the micro control unit, and can also realize pure amplitude modulation ASK and multi-load through the combination of various modules inside the micro control unit and the normalized external top-adjusting hardware circuit. Functions of the three top-adjusting modes of frequency amplitude modulation ASK and frequency modulation FSK. That is to say, this disclosure only needs to use the same PCBA (the micro-control unit is located on the PCBA) to support three top-adjusting modes: pure amplitude modulation ASK, multi-carrier frequency amplitude modulation ASK, and frequency modulation FSK. The corresponding parameters are configured through software. Select the working mode, so that only one product model is needed to solve the choice of multiple top adjustment modes, thereby solving the problem of remote optical module management, reducing production costs and inventory pressure, and there is no need to replace the optical module on site. Flexible switching of top adjustment methods reduces operation and maintenance costs. In addition, the rate adjustment of the present disclosure can support rate configuration from 1 kbps to several thousand Kbps according to customer needs.

Those of ordinary skill in the art can understand that all or part of the steps in the various methods of the embodiments can be completed by instructing relevant hardware through a program. The program can be stored in a computer-readable storage medium. The storage medium can include: Read memory (ReadOnlyMemory, abbreviated as: ROM), random access memory (RandomAccessMemory, abbreviated as: RAM), magnetic disk or optical disk, etc.

The above are only preferred embodiments of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present disclosure shall be included in the protection of the present disclosure. within the range. Contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

A method for sending multi-mode topping signals, which is characterized by including:

The micro-control unit configures the multi-mode top-adjusting data, controls the amplitude and frequency of the top-adjusting signal, and outputs the top-adjusting digital signal;

Convert the top-adjusting digital signal into a top-adjusting analog signal through an external top-adjusting hardware circuit;

The top-adjusting analog signal is superimposed on the high-speed data signal emitted by the high-speed laser to form a top-adjusting signal channel.
The multi-mode top adjustment signal sending method according to claim 1, characterized in that the micro control unit configures the multi-mode top adjustment data, realizes the control of the amplitude and frequency of the top adjustment signal, and outputs the top adjustment digital signal Specifically include:

The top adjustment mode selection and parameter configuration module of the micro control unit obtains the top adjustment data configured by the micro control unit, and determines the current top adjustment mode and top adjustment parameters based on the top adjustment data, wherein the top adjustment mode includes One or more of pure AM ASK mode, multi-carrier frequency AM ASK mode and frequency modulation FSK mode;

The top-adjusting data encoding module of the micro-control unit encodes the top-adjusting data, and outputs the encoded data to the top-adjusting digital signal generation module of the micro-control unit to control the amplitude of the carrier frequency;

The carrier frequency generation module of the micro control unit sends the set frequency to the top-adjusting digital signal generation module of the micro control unit;

The top-adjusting digital signal generation module of the micro-control unit superimposes the amplitude of the top-adjusting data and the carrier frequency to output a top-adjusting digital signal with controlled amplitude.
A method for receiving multi-mode topping signals, which is characterized by including:

The high-speed detector outputs the slow-speed top-adjustment signal to the top-adjustment analog signal extraction unit;

The top-adjusting analog signal extraction unit amplifies and filters the top-adjusting signal, extracts it, and sends it to the micro-control unit;

The micro control unit decodes the acquired top adjustment signal and recovers the original top adjustment data.
The multi-mode topping signal receiving method according to claim 3, characterized in that the micro-control unit decodes the acquired topping signal to recover the original topping data, which specifically includes:

The amplitude/frequency processing module of the micro control unit identifies one or more of amplitude, envelope size, and frequency value according to the configured top adjustment mode; wherein the top adjustment mode includes pure amplitude modulation ASK mode, multi-carrier One or more of frequency modulation ASK mode and frequency modulation FSK mode;

The topping data decoding and recovery module of the micro control unit decodes and recovers the original topping data according to the identification result of the amplitude/frequency processing module.
The multi-mode topping signal receiving method according to claim 4, characterized in that the topping data decoding and recovery module of the micro control unit decodes and recovers the original topping data according to the identification result of the amplitude/frequency processing module. include:

If the determined top-adjusting mode is the pure amplitude modulation ASK mode, the numbers 1 and 0 are identified according to the amplitude of the analog signal, thereby restoring the original debugging data;

If the determined top-tuning mode is the multi-carrier amplitude modulation ASK mode, the original top-tuning data is restored according to the amplitude of the analog signal, and the frequency value of the carrier frequency is identified. According to the relationship between frequency and wavelength, Correspondence, identify the currently received light wavelength;

If the determined top adjustment mode is the frequency modulation FSK mode, based on predefined rules, the values 1 and 0 are restored according to the identified frequency values, thereby restoring the original debugging data.
A multi-mode top-adjusting signal sending system is characterized by including a micro-control unit, an external top-adjusting hardware circuit, a high-speed laser and a high-speed data driver chip, wherein:

The micro-control unit is used to complete the configuration of multi-mode top-adjusting data, control the amplitude and frequency of the top-adjusting signal, and output the top-adjusting digital signal;

The high-speed data driver chip transmits high-speed data signals to the high-speed laser;

The external top-adjustment hardware circuit is used to convert the top-adjustment digital signal output by the microcontrol unit into a top-adjustment analog signal, and superimpose it on the high-speed data signal of the high-speed laser to form a top-adjustment signal channel.
The multi-mode topping signal sending system according to claim 6, characterized in that the micro-control unit includes a topping mode selection and parameter configuration module, a topping data encoding module, a carrier frequency generation module, and a topping Digital signal generation module, including:

The top adjustment mode selection and parameter configuration module is used to obtain the top adjustment data configured by the micro control unit, and determine the current top adjustment mode and top adjustment parameters based on the top adjustment data, wherein the top adjustment mode includes pure top adjustment. One or more of AM ASK mode, multi-carrier frequency AM ASK mode and frequency modulation FSK mode;

The top-adjusting data encoding module is used to encode the top-adjusting data, and outputs the encoded data to the top-adjusting digital signal generation module to control the amplitude of the carrier frequency;

The carrier frequency generation module is used to send the set frequency to the top-adjusting digital signal generation module;

The top-adjusting digital signal generating module is used to superimpose the amplitude of the top-adjusting data and the carrier frequency to output a top-adjusting digital signal with controlled amplitude.
The multi-mode top-adjusting signal sending system according to any one of claims 6-7, characterized in that the micro-control unit includes a first micro-control unit and a second micro-control unit, and the first micro-control unit and The second micro control unit is connected through a data interface, where:

The first micro control unit is used to obtain the configured multi-mode top adjustment data, and write the configured top adjustment data into the second micro control unit;

The second micro-control unit is used to receive the configuration of the multi-mode top-adjusting data and realize the sending and analysis of the amplitude and frequency information of the top-adjusting signal.
A multi-mode top-adjusting signal receiving system, which is characterized by including a micro-control unit, a top-adjusting analog signal extraction unit, a high-speed detector and a high-speed data driver chip, wherein:

The high-speed detector is used to convert the optical signal into an electrical signal, and send the converted high-speed data electrical signal to the receiving end of the high-speed data driver chip; the high-speed detector is also used to output the slow speed adjustment signal to The top-adjusting analog signal extraction unit;

The top-adjusting analog signal extraction unit is used to amplify and filter the top-adjusting signal, extract it, and send it to the micro-control unit;

The micro control unit is configured to decode the acquired top adjustment signal and recover the original top adjustment data.
The multi-mode topping signal receiving system according to claim 9, characterized in that the micro control unit includes an amplitude/frequency processing module and a topping data decoding and recovery module, wherein:

The amplitude/frequency processing module is used to identify one or more of amplitude, envelope size, and frequency value according to the configured top adjustment mode; wherein the top adjustment mode includes pure amplitude modulation ASK mode, multi-carrier frequency amplitude modulation One or more of ASK mode and FM FSK mode;

The topping data decoding and recovery module decodes and recovers the original topping data according to the identification result of the amplitude/frequency processing module.