WO2021129854A1

WO2021129854A1 - Wdm-based baseband signal transmission apparatus and method, storage medium, and electronic device

Info

Publication number: WO2021129854A1
Application number: PCT/CN2020/139876
Authority: WO
Inventors: 胡呈欣; 郑自永
Original assignee: 京信网络系统股份有限公司
Priority date: 2019-12-27
Filing date: 2020-12-28
Publication date: 2021-07-01
Also published as: CN111092690A

Abstract

Embodiments of the present invention provide a WDM-based baseband signal transmission apparatus and method, a storage medium, and an electronic device. The apparatus comprises a laser, a light emitting control module, and a light filter assembly arranged on an output optical path of the laser; the light filter assembly is configured to allow an optical signal having a wavelength within a preset wavelength range to pass through; the light emitting control module is configured to obtain a signal format of a baseband signal to be transmitted, and control, according to the signal format of the baseband signal to be transmitted, the laser to output an optical signal having a first preset wavelength or an optical signal having a second preset wavelength, the first preset wavelength being within the preset wavelength range of the light filter assembly, and the second preset wavelength being not within the preset wavelength range of the light filter assembly. The problem that when switching between light emitting and non-light emitting is implemented by turning on or turning off the laser, wavelength drift is serious, the communication quality of neighboring channels is affected, and then the fiber communication effect is affected is solved.

Description

WDM-based baseband signal transmission device, method, storage medium and electronic equipment

Technical field

This application relates to the field of communication technology, and in particular to a WDM-based baseband signal sending device, method, readable storage medium, and electronic equipment.

Background technique

In the field of traditional optical fiber communication, how to make full use of optical fiber to increase its transmission capacity is one of the most common technical demands in the industry. Wavelength Division Multiplexin (WDM) technology is to converge two or more optical signals of different wavelengths through a multiplexer and send them together in the same optical fiber. The receiving end separates the optical signals of different wavelengths through an optical wave demultiplexer, and then splits them to different receivers.

The transmission of optical signals by the existing baseband signal transmission device has bursts in the time domain. Specifically, in practice, as the signal format of the baseband signal changes, it is necessary to switch the baseband signal transmitting device between light-emitting and non-light-emitting. In the prior art, the switching of the baseband signal transmitting device between light-emitting and non-light-emitting is realized by turning on or off the laser. This will cause the wavelength of the optical signal to drift seriously, affect the accuracy of the wavelength, and affect the communication quality of adjacent channels under severe conditions, thereby affecting the effect of optical fiber communication.

Summary of the invention

At least one embodiment of the present invention provides a WDM-based baseband signal transmission device, method, readable storage medium, and electronic equipment to solve the problem of switching between light emission and non-light emission by turning on or turning off the laser, and the wavelength drift is serious. The problem that affects the communication quality of adjacent channels, and then affects the effect of optical fiber communication.

In the first aspect, an embodiment of the present invention provides a baseband signal transmission device based on wavelength division multiplexing. The baseband signal sending device includes: a laser, a light emission control module, and a light filter assembly arranged on the output light path of the laser;

The light filtering component is used to allow light signals with a wavelength in a preset wavelength range to pass;

The light emission control module is configured to obtain the signal format of the baseband signal to be sent, and control the laser to output an optical signal of a first preset wavelength or an optical signal of a second preset wavelength according to the signal format of the baseband signal to be sent For an optical signal, the first preset wavelength is within the preset wavelength range of the light filtering component, and the second preset wavelength is not within the preset wavelength range of the light filtering component.

In the second aspect, an embodiment of the present invention proposes a baseband signal transmission method based on the above-mentioned wavelength division multiplexing-based baseband signal transmission device. The baseband signal transmission method includes the following steps:

Obtain the signal format of the baseband signal to be sent;

According to the signal format of the baseband signal to be sent, the laser is controlled to output an optical signal of a first preset wavelength, or an optical signal of a second preset wavelength, where the first preset wavelength is preset in the light filter assembly Within the wavelength range, the second preset wavelength is not within the preset wavelength range of the light filtering component.

In a third aspect, an embodiment of the present invention also provides a computer-readable storage medium, the storage medium stores a computer program, and the computer program is used to execute any of the baseband signal sending methods provided by the embodiments of the present invention .

In a fourth aspect, an embodiment of the present invention also provides an electronic device, the electronic device including:

processor;

A memory for storing executable instructions of the processor;

The processor is configured to read the executable instruction from the memory, and execute the executable instruction to implement any one of the baseband signal sending methods provided in the embodiments of the present invention.

The embodiment of the present invention adds a light filter component that allows optical signals with a wavelength in a preset wavelength range to pass, and sets the laser to output the optical signal of the first preset wavelength according to the signal format of the baseband signal to be sent, or the first Two optical signals of preset wavelengths, the first preset wavelength is within the preset wavelength range of the light filter assembly, and the second preset wavelength is not within the preset wavelength range of the light filter assembly, and can pass Adjusting the laser to output optical signals of different wavelengths realizes the switching of the baseband signal transmitting device between light-emitting and non-light-emitting. This method can reduce the variation range of the laser control signal (such as current, temperature or mechanical angle, etc.), and solves the problem of switching between light emission and non-light emission by turning on or off the laser, and the wavelength drift is serious, which affects neighboring Channel communication quality, which affects the effect of optical fiber communication, reduces the drift of the optical signal wavelength, improves the accuracy of the wavelength, improves the quality of adjacent channel communication, and further improves the effect of optical fiber communication.

Description of the drawings

Figure 1 is a diagram of the relationship between the wavelength of the optical signal emitted by a laser and the change of the current value provided in the research process of the present invention;

2 is a structural block diagram of a baseband signal sending device provided by an embodiment of the present invention;

FIG. 3 is a structural block diagram of another baseband signal sending apparatus provided by an embodiment of the present invention;

4 is a structural block diagram of another baseband signal sending apparatus provided by an embodiment of the present invention;

FIG. 5 is a flowchart of a method for transmitting a baseband signal according to an embodiment of the present invention;

FIG. 6 is a flowchart of another method for transmitting baseband signals according to an embodiment of the present invention;

FIG. 7 is a flowchart of filter wavelength configuration in a baseband signal transmission method provided by an embodiment of the present invention

FIG. 8 is a schematic diagram of the hardware structure of an electronic device provided by an embodiment of the present invention.

Detailed ways

Hereinafter, exemplary embodiments according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application, and it should be understood that the present application is not limited by the exemplary embodiments described herein.

The baseband signal sending device in the prior art only includes a laser and a light-emitting control module. The light-emitting control module is used to control the laser to output an optical signal with a preset wavelength according to the baseband signal to be sent. With regard to the existing baseband signal transmission device, the switch of the baseband signal transmission device light-emitting and non-light-emitting is realized by turning on or off the laser. Exemplarily, if the laser is a current-regulated laser, the laser is provided with a preset current control signal, that is, a bias current is provided to the laser to control the laser to emit light; the laser is controlled to not emit light by stopping the current control signal provided to the laser. FIG. 1 is a diagram of the relationship between the wavelength of the optical signal emitted by a laser and the change of the current value provided by the present invention during the research process. Referring to Figure 1, after the laser is turned on, as time goes by, the current value gradually increases from 0, the wavelength of the optical signal emitted by the laser gradually increases, and the range of wavelength variation gradually increases. The greater the wavelength range, the more serious the wavelength drift, and the greater the impact on the wavelength accuracy. In the field of traditional wavelength division multiplexing, the requirements for wavelength accuracy are strict, and insufficient accuracy will cause interference to adjacent optical channel communications, thereby affecting the effect of optical fiber communications.

In view of this, the embodiment of the present invention provides a solution for a baseband signal sending device based on wavelength division multiplexing, by adding a light filter component that allows optical signals with a wavelength in a preset wavelength range to pass, and setting the baseband signal according to the to-be-transmitted baseband The signal format of the signal controls the laser to output an optical signal of a first preset wavelength, or an optical signal of a second preset wavelength, where the first preset wavelength is within the preset wavelength range of the light filter component, and the The second preset wavelength is not within the preset wavelength range of the light filter assembly. In this way, it is possible to switch between emitting and not emitting light of the baseband signal sending device by adjusting the laser to output optical signals of different wavelengths. This method can reduce the range of laser control signals (such as current, temperature, or mechanical angle), thereby reducing the wavelength drift of the optical signal, improving the accuracy of the wavelength, improving the quality of adjacent channel communication, and improving the effect of optical fiber communication.

Fig. 2 is a structural block diagram of a baseband signal sending device provided by an embodiment of the present invention. Referring to FIG. 2, the baseband signal sending device includes: a laser 11, a light emission control module 12, and a light filter assembly 13 arranged on the output optical path of the laser 11. The light filter component 13 is used to allow the optical signal with a wavelength in the preset wavelength range to pass; the light control module 12 is used to obtain the signal format of the baseband signal to be sent, and control the laser 11 to output the second signal according to the signal format of the baseband signal to be sent An optical signal of a preset wavelength, or an optical signal of a second preset wavelength, the first preset wavelength is within the preset wavelength range of the light filtering component 13, and the second preset wavelength is not within the preset wavelength range of the light filtering component 13 Inside.

The baseband signal refers to the original electric signal sent by the information source (also called the sending end) without modulation. In this application, the baseband signal is a digital baseband signal. The digital baseband signal refers to the electrical waveform (voltage or current) of the message code. Each digital baseband signal is formed by arranging a plurality of binary symbols 0 and a plurality of binary symbols 1. In this application, the signal format of the baseband signal corresponds to the binary symbol. Optionally, the signal format of the baseband signal includes 0 and 1. Among them, the signal format 0 of the baseband signal corresponds to the binary symbol 0, and the signal format 1 of the baseband signal corresponds to the binary symbol 1. Alternatively, signal format 0 of the baseband signal corresponds to binary symbol 1, and signal format 1 of the baseband signal corresponds to binary symbol 0.

In this application, the laser 11 may be a current-regulated laser, a temperature-regulated laser, or a mechanically-regulated laser. The laser 11 may also be any two or a combination of two or more of a current-regulated laser, a temperature-regulated laser, and a mechanically-regulated laser.

Among them, the current-regulated laser 11 refers to a laser with different wavelengths based on current control technology. The working principle is to change the current of the fiber grating and the phase control part at different positions in the tunable laser, so that the relative refractive index of the fiber grating will change, and different spectra will be generated. The superposition of different spectra generated by the fiber grating in different regions Select a specific wavelength to generate the required specific wavelength laser.

The working principle of temperature-regulated lasers, such as Distributed Feedback Laser (DFB), is to adjust the temperature in the laser cavity so that the DFB can emit lasers of different wavelengths.

Mechanically adjustable lasers are generally implemented by Micro-Electro-Mechanical System (MEMS). A tunable laser based on mechanical control technology mainly includes DFB laser array, tiltable MEMs lens and other control and auxiliary parts. There are several DFB laser arrays for the DFB laser array area. Select the required specific wavelength by controlling the rotation angle of the MEMs lens, so as to output the required specific wavelength of light.

In the embodiment of the present invention, by adding a light filter assembly 13 that allows optical signals with a wavelength in the preset wavelength range to pass, and setting the laser 11 to output the optical signal of the first preset wavelength according to the signal format of the baseband signal to be sent, or the first Two optical signals with preset wavelengths, the first preset wavelength is within the preset wavelength range of the light filter assembly 13, and the second preset wavelength is not within the preset wavelength range of the light filter assembly 13. In other words, when the laser 11 outputs the first The optical signal of the preset wavelength, since the first preset wavelength is within the preset wavelength range of the light filter assembly 13, it can pass through the light filter assembly 13 and continue to be transmitted, which is equivalent to the baseband signal sending device emitting light. When the laser 11 outputs an optical signal of the second preset wavelength, since the second preset wavelength is not within the preset wavelength range of the light filter assembly 13, it cannot pass through the light filter assembly 13, which is equivalent to the baseband signal sending device not Glow. In this way, by controlling the laser 11 to output the optical signal of the first preset wavelength or the optical signal of the second preset wavelength, it is possible to switch between emitting and not emitting the baseband signal transmission device.

Since in the process of controlling the laser 11 to output the optical signal of the first preset wavelength or the optical signal of the second preset wavelength, the laser 11 itself is always in a light-emitting state, in practice, only the size of the laser control signal needs to be changed.

Exemplarily, referring to Fig. 1, if the laser is a current-regulated laser, when the first bias current I1 is provided to the laser, the laser outputs an optical signal of the first preset wavelength (this optical signal meets the needs of the user and can be filtered by light Component 13); when the second bias current I2 is provided to the laser, the laser outputs an optical signal of the second preset wavelength (this optical signal does not meet the needs of the user and cannot pass through the light filter component 13); when the laser is not provided with a bias Current, that is, the bias current signal is 0 at this time, the laser is turned off, and no optical signal is output. It can be considered that the wavelength of the optical signal is 0 at this time. In practice, you can set |I1-I2| to be smaller than |I1-0|. In this way, compared with the solution of providing the laser with the first bias current I1 or 0 to realize the switching between light and no light, the first bias current I1 and the second bias current I2 are provided to the laser to realize light and no light. The switching scheme can reduce the variation range of the bias current, thereby reducing the variation range of the wavelength of the optical signal. Therefore, the baseband signal transmitting device provided by the present application can reduce the drift of the wavelength of the optical signal, improve the accuracy of the wavelength, improve the communication quality of the adjacent channel, and further improve the optical fiber communication effect.

It should be emphasized that, in practice, in the process of switching the laser 11 from outputting an optical signal of the first preset wavelength to an optical signal of the second preset wavelength, or switching the laser 11 to output an optical signal of the second preset wavelength In the process of switching to the optical signal of the first preset wavelength, the variation range of the laser control signal (such as current, temperature or mechanical angle, etc.) can be set as small as possible to further reduce the drift of the optical signal wavelength and improve the accuracy of the wavelength. Improve the quality of adjacent channel communication, thereby improving the effect of optical fiber communication.

Fig. 3 is a structural block diagram of another baseband signal sending apparatus provided by an embodiment of the present invention. Referring to FIG. 3, in the baseband signal sending device, the light emitting control module 12 includes: a signal format obtaining unit 121 and a first signal sending unit 122. Wherein, the signal format obtaining unit 121 is used to obtain the signal format of the baseband signal to be sent; the first signal sending unit 122 is used to send the first wavelength control signal to the laser 11 when the baseband signal to be sent is the first signal format, So that the laser 11 outputs the optical signal of the first preset wavelength based on the first wavelength control signal; and is used to send the second wavelength control signal to the laser 11 when the baseband signal to be sent is in the second signal format, so that the laser 11 is based on The second wavelength control signal outputs an optical signal of the second preset wavelength. The essence of this setting is that when the baseband signal to be sent is in the first signal format, the baseband signal sending device finally outputs an optical signal, that is, emitting light; when the baseband signal to be sent is in the second signal format, the baseband signal sending device finally does not Output light signal, that is, no light.

Optionally, the first signal format is 0 and the second signal format is 1; or, the first signal format is 1 and the second signal format is 0.

In the above technical solution, the laser 11 may include one of a current-regulated laser, a temperature-regulated laser, and a mechanically-regulated laser. Or the laser 11 may also include a combination of the above-mentioned lasers.

Both the first wavelength control signal and the second wavelength control signal are one of a current control signal, a temperature adjustment signal or a mechanical adjustment signal.

Exemplarily, for the current-regulated laser 11, the first wavelength control signal and the second wavelength control signal may be both current control signals. For a temperature-regulated laser, it can be set that the first wavelength control signal and the second wavelength control signal are both temperature-regulating signals. For a mechanically adjustable laser, it can be set that the first wavelength control signal and the second wavelength control signal are both mechanically adjustable signals.

Taking into account that in practice, the temperature of the filter is different, and the range of wavelengths that it allows to pass is different. To this end, optionally, the light filter assembly 13 includes a temperature control filter 131 and a constant temperature control module 132; the constant temperature control module 132 is used to control the temperature of the temperature control filter 131 to stabilize. This arrangement can make the light filtering effect of the light filter assembly 13 stable, thereby enabling it to stably allow the optical signal of the first preset wavelength to pass through, and prohibit the optical signal of the second preset wavelength from passing, so as to improve the reliability of the baseband signal sending device. the goal of.

In the wavelength division multiplexing technology, multiple lasers 11 simultaneously transmit multiple lasers of different wavelengths on a single optical fiber. In practice, the choice of laser wavelength needs to be determined according to the configuration of the receiver or the needs of the user. It can be seen from the above solutions that when the baseband signal sending device emits light, the wavelength of the finally emitted optical signal is within the wavelength range of the optical signal that the light filter assembly 13 can allow to pass. In other words, the wavelength of the laser light emitted by the baseband signal transmitting device is determined by the light filter assembly 13. To this end, optionally, the temperature control filter 131 includes a semiconductor cooler 1311 and a filter body 1312; the thermostatic control module 132 is connected to the semiconductor cooler 1311, and is used to control the operation of the semiconductor cooler 1311 to make the filter The main body 1312 is at different working temperatures; the working temperature of the filter main body 1312 is different, and the preset wavelength range of the filter main body changes accordingly. Exemplarily, the central wavelength in the preset wavelength range of the filter body is defined as λ, and λ is positively correlated with the working temperature of the filter body 1312. By adjusting the temperature of the filter main body 1312, the wavelength range of the optical signal that the filter main body 1312 can allow to pass through can be changed, so that the wavelength of the optical signal emitted when the baseband signal transmitting device emits light can meet the needs of different users.

On the basis of the above technical solution, optionally, the thermostat control module 132 includes: a configuration instruction receiving unit, configured to receive a wavelength configuration instruction, and generate a temperature control signal based on the wavelength configuration instruction; a second signal sending unit, configured to transmit the temperature The control signal is sent to the semiconductor refrigerator. The wavelength configuration command can be generated according to the configuration of the receiver or the needs of the user. The purpose of this setting is to provide a way to configure the wavelength of the filter (that is, adjust the wavelength range of the optical signal allowed by the filter body 1312 according to the configuration of the receiver or the needs of the user) to meet the needs of different users .

It should be noted that, in practice, usually, for a certain receiver or user, the configuration of the receiver or the user's requirement is determined, therefore, only one filter wavelength configuration is performed.

On the basis of the above technical solutions, optionally, the thermostatic control module 132 and the light-emitting control module 12 are integrated in a thermostat controller. The purpose of this setting is to further keep the wavelength of the laser output from the baseband signal transmitting device constant, reduce the possibility of wavelength drift, improve the accuracy of the wavelength, improve the quality of adjacent channel communication, and further improve the effect of optical fiber communication.

Fig. 4 is a structural block diagram of another baseband signal sending apparatus provided by an embodiment of the present invention. Referring to FIG. 4, in the baseband signal sending device, the laser 11 can be a FP (Fabry-perot) laser, a DFB (Distributed Feedback Laser) laser, or an EML laser (Electlro-absorption Modulated Laser). The MCU receives the wavelength configuration instruction, generates a temperature control signal based on the wavelength configuration instruction, and sends the temperature control signal to the TEC and its control circuit, so that the filter body is at a set working temperature. The MCU also obtains the signal format of the baseband signal to be sent. The bias current control circuit sends the first wavelength control signal to the APC when the baseband signal to be sent is in the first signal format, and sends the second wavelength control signal to the APC when the baseband signal to be sent is in the second signal format. APC (Automatic Power Control) is an automatic power control circuit. After receiving the first wavelength control signal, the APC controls the laser drive IC to output the first bias current signal to control the laser 11 to output the optical signal of the first preset wavelength. After receiving the second wavelength control signal, the APC controls the laser driving IC to output a second bias current signal to control the laser 11 to output an optical signal of the second preset wavelength. At the same time, the APC also receives the bias current signal fed back by the laser 11 to correct the first bias current signal or the second bias current signal according to the feedback bias current signal to stabilize the bias current applied to the laser. When the bias current is stable, the wavelength of the optical signal output by the laser remains stable.

The MCU is also connected to the ATC through a TEC temperature control circuit. ATC (Automatic Temperature Control) is an automatic temperature control circuit for stabilizing the temperature of the light-emitting device integrated in the laser 11. When the temperature is higher than the set temperature, ATC makes the TEC (Thermo Electric Cooler) in the laser assembly work, the TEC component absorbs heat, and the temperature will drop; when the temperature is lower than the set temperature, the ATC control circuit makes the cooling When the TEC component is working, the temperature will rise, so that the working temperature of the laser tends to be stable, so as to ensure that the temperature of the laser die is stable and unchanging, so as to achieve stable and further control of the wavelength of the optical signal emitted from the laser.

An embodiment of the present invention also provides a baseband signal transmission method. FIG. 5 is a flowchart of a baseband signal transmission method provided by an embodiment of the present invention. The baseband signal sending method is applicable to any baseband signal sending apparatus provided in the embodiment of the present invention.

Referring to FIG. 5, the baseband signal sending method includes the following steps:

S210: Acquire the signal format of the baseband signal to be sent.

S210. Control the laser to output an optical signal of a first preset wavelength or an optical signal of a second preset wavelength according to the signal format of the baseband signal to be sent, the first preset wavelength is within the preset wavelength range of the light filtering component, and the second The preset wavelength is not within the preset wavelength range of the light filter component.

Since the baseband signal sending method provided by the embodiment of the present invention is applicable to any baseband signal sending device provided in the embodiment of the present invention, it has the same or corresponding beneficial effects as the applicable baseband signal sending device, and will not be repeated here.

Optionally, when the baseband signal to be sent is in the first signal format, the first wavelength control signal is sent to the laser, so that the laser outputs an optical signal of the first preset wavelength based on the first wavelength control signal; and, when the baseband signal to be sent is When the signal is in the second signal format, the second wavelength control signal is sent to the laser, so that the laser outputs an optical signal of the second preset wavelength based on the second wavelength control signal.

FIG. 6 is a flowchart of another method for transmitting baseband signals according to an embodiment of the present invention. In Figure 6, signal format 0 of the baseband signal corresponds to binary symbol 0, and signal format 1 of the baseband signal corresponds to binary symbol 1. Referring to FIG. 6, the baseband signal sending method includes the following steps:

S310. Acquire the signal format of the baseband signal to be sent.

S320: Determine whether the signal format of the baseband signal to be sent is 0, if it is, execute S330, if not, execute S340.

S330. Send a second wavelength control signal to the laser, so that the laser outputs an optical signal of the second preset wavelength based on the second wavelength control signal, and the baseband signal sending device does not emit light.

S340. Send a first wavelength control signal to the laser, so that the laser outputs an optical signal of a first preset wavelength based on the first wavelength control signal, and the baseband signal sending device emits light.

It should be noted that since each digital baseband signal is formed by arranging multiple binary symbols 0 and multiple binary symbols 1, if the current baseband signal has not been sent, repeat S310 after S330 and S340. If the current baseband signal is sent, it ends after S330 and S340.

FIG. 7 is a flowchart of filter wavelength configuration in a baseband signal transmission method provided by an embodiment of the present invention. See Figure 7,

S410. Receive a wavelength configuration instruction, and generate a temperature control signal based on the wavelength configuration instruction.

S420: Send the temperature control signal to the semiconductor cooler, so that the semiconductor cooler works, and the filter body is at a set operating temperature.

This setting is beneficial to meet the needs of different users and improve the universality of the baseband signal transmission method.

An embodiment of the present invention also provides a computer-readable storage medium, where the storage medium stores a computer program, and the computer program is used to execute the baseband signal sending method provided in the embodiment of the present application.

The embodiment of the present invention also provides an electronic device. FIG. 8 is a schematic diagram of the hardware structure of an electronic device provided by an embodiment of the present invention. As shown in FIG. 8, the electronic device includes:

One or more processors 501, one processor 501 is taken as an example in FIG. 8;

Memory 502;

The electronic device may further include: an input device 503 and an output device 504.

The processor 501, the memory 502, the input device 503, and the output device 504 in the electronic device may be connected through a bus or other methods. In FIG. 8, the connection through a bus is taken as an example.

As a non-transitory computer-readable storage medium, the memory 502 can be used to store software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the baseband signal sending method in the embodiment of the present invention. The processor 501 executes various functional applications and data processing of the server by running the software programs, instructions, and modules stored in the memory 502, that is, implements the baseband signal sending method of the foregoing method embodiment.

The memory 502 may include a program storage area and a data storage area. The program storage area may store an operating system and an application program required by at least one function; the data storage area may store data created according to the use of the electronic device, and the like. In addition, the memory 502 may include a high-speed random access memory, and may also include a non-transitory memory, such as at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state storage devices. In some embodiments, the memory 502 may optionally include a memory remotely provided with respect to the processor 501, and these remote memories may be connected to the terminal device through a network. Examples of the aforementioned networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

The input device 503 can be used to receive input digital or character information, and generate key signal input related to user settings and function control of the electronic device. The output device 504 may include a display device such as a display screen.

Claims

A baseband signal sending device, characterized by comprising: a laser, a light emission control module, and a light filter assembly arranged on the output light path of the laser;

The light filtering component is used to allow light signals with a wavelength in a preset wavelength range to pass;

The light emission control module is used to obtain the signal format of the baseband signal to be sent, and control the laser to output the optical signal of the first preset wavelength or the light of the second preset wavelength according to the signal format of the baseband signal to be sent. Signal, the first preset wavelength is within the preset wavelength range of the light filtering component, and the second preset wavelength is not within the preset wavelength range of the light filtering component.
The baseband signal sending device according to claim 1, wherein the light emitting control module comprises:

A signal format acquisition unit for acquiring the signal format of the baseband signal to be sent;

The first signal sending unit is configured to send a first wavelength control signal to the laser when the baseband signal to be sent is in the first signal format, so that the laser outputs the first wavelength control signal based on the first wavelength control signal An optical signal of a preset wavelength; and used to send a second wavelength control signal to the laser when the baseband signal to be sent is in the second signal format, so that the laser outputs based on the second wavelength control signal The optical signal of the second preset wavelength.
The baseband signal transmitting device according to claim 2, wherein:

If the first signal format is 0, the second signal format is 1; or,

If the first signal format is 1, the second signal format is 0.
The baseband signal transmitting device according to claim 2, wherein:

The laser includes one or more of a current-regulated laser, a temperature-regulated laser, and a mechanically-regulated laser.
The baseband signal sending device according to claim 1, wherein the light filter assembly includes a temperature control filter and a temperature control module;

The constant temperature control module is used to control the temperature stability of the temperature control filter.
The baseband signal sending device according to claim 5, wherein the temperature control filter includes a semiconductor cooler and a filter body;

The thermostatic control module is connected to the semiconductor refrigerator, and is used to control the operation of the semiconductor refrigerator so that the filter body is at different operating temperatures.
The baseband signal sending device according to claim 6, wherein the thermostat control module comprises:

A configuration instruction receiving unit, configured to receive a wavelength configuration instruction, and generate a temperature control signal based on the wavelength configuration instruction;

The second signal sending unit is used to send the temperature control signal to the semiconductor refrigerator.
A baseband signal sending method based on the baseband signal sending device of any one of claims 1-7, characterized in that it comprises the following steps:

Obtain the signal format of the baseband signal to be sent;

According to the signal format of the baseband signal to be sent, the laser is controlled to output an optical signal of a first preset wavelength or an optical signal of a second preset wavelength, where the first preset wavelength is at the preset wavelength of the light filter component Within the range, the second preset wavelength is not within the preset wavelength range of the light filter component.
8. The baseband signal sending method according to claim 8, wherein when the baseband signal to be sent is in the first signal format, a first wavelength control signal is sent to the laser, so that the laser is based on the first signal format. The wavelength control signal outputs an optical signal of the first preset wavelength; and,

When the baseband signal to be sent is in the second signal format, sending a second wavelength control signal to the laser, so that the laser outputs an optical signal of a second preset wavelength based on the second wavelength control signal.
The baseband signal transmission method according to claim 9, wherein the first signal format is 0 and the second signal format is 1; or, the first signal format is 1, and the second signal format is Is 0.
The baseband signal sending method according to claim 8, characterized in that it further comprises:

Receiving a wavelength configuration instruction, and generating a temperature control signal based on the wavelength configuration instruction;

The temperature control signal is sent to the semiconductor cooler to make the semiconductor cooler work, and the filter body is at a set operating temperature.
A computer-readable storage medium, wherein the storage medium stores a computer program, and the computer program is used to execute the baseband signal transmission method of any one of claims 8-11.
An electronic device, characterized in that, the electronic device includes:

processor;

A memory for storing executable instructions of the processor;

The processor is configured to read the executable instruction from the memory, and execute the executable instruction to implement the baseband signal sending method of any one of claims 8-11.