CN111092690A - WDM-based baseband signal transmission device, method, storage medium and electronic device - Google Patents
WDM-based baseband signal transmission device, method, storage medium and electronic device Download PDFInfo
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- CN111092690A CN111092690A CN201911375754.4A CN201911375754A CN111092690A CN 111092690 A CN111092690 A CN 111092690A CN 201911375754 A CN201911375754 A CN 201911375754A CN 111092690 A CN111092690 A CN 111092690A
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- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
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Abstract
The embodiment of the invention provides a baseband signal transmitting device, a baseband signal transmitting method, a baseband signal transmitting storage medium and electronic equipment based on WDM, wherein the device comprises: the device comprises a laser, a light emitting control module and a light ray filtering component, wherein the light ray filtering component is arranged on an output light path of the laser; the light ray filtering component is used for allowing optical signals with the wavelength within a preset wavelength range to pass through; the light emission control module is used for acquiring a signal format of a baseband signal to be transmitted, and controlling the laser to output an optical signal with a first preset wavelength or an optical signal with a second preset wavelength according to the signal format of the baseband signal to be transmitted, wherein the first preset wavelength is within a 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, so that the problems that switching between light emission and non-light emission is realized by turning on or off the laser, wavelength drift is serious, communication quality of adjacent channels is influenced, and further the optical fiber communication effect is influenced are solved.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a WDM-based baseband signal transmitting apparatus, a WDM-based baseband signal transmitting method, a readable storage medium, and an electronic device.
Background
In the field of traditional optical fiber communication, how to fully utilize optical fibers to improve the transmission capacity of the optical fibers is the most common technical requirement in the industry. Wavelength Division Multiplexing (WDM) technology is to combine two or more optical signals with different wavelengths together through a multiplexer and then transmit the signals in the same optical fiber. The receiving end separates the optical signals with different wavelengths through the optical wave demultiplexer and then shunts the optical signals to different receivers.
The prior baseband signal transmitting device transmits optical signals in a burst in a time domain. Specifically, in practice, it is necessary to switch between light emission and non-light emission of the baseband signal transmission device as the signal format of the baseband signal changes. In the prior art, the switching between the light emitting and non-light emitting of the baseband signal transmitting device is realized by turning on or off the laser. Therefore, the wavelength drift of the optical signal is serious, the precision of the wavelength is influenced, the communication quality of adjacent channels is influenced under the severe condition, and the effect of optical fiber communication is further influenced.
Disclosure of Invention
At least one embodiment of the present invention provides a WDM-based baseband signal transmission apparatus, a WDM-based baseband signal transmission method, a readable storage medium, and an electronic device, so as to solve the problems that switching between light emission and non-light emission is realized by turning on or off a laser, wavelength drift is severe, adjacent channel communication quality is affected, and further, optical fiber communication effect is affected.
In a first aspect, an embodiment of the present invention provides a baseband signal transmitting apparatus based on wavelength division multiplexing. The baseband signal transmitting apparatus includes: the device comprises a laser, a light emitting control module and a light ray filtering component, wherein the light ray filtering component is arranged on an output light path of the laser;
the light ray filtering component is used for allowing optical signals with the wavelength within a preset wavelength range to pass through;
the light emission control module is configured to acquire a signal format of a baseband signal to be transmitted, and control the laser to output an optical signal with a first preset wavelength or an optical signal with a second preset wavelength according to the signal format of the baseband signal to be transmitted, where the first preset wavelength is within a 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 a second aspect, an embodiment of the present invention provides a baseband signal transmitting method based on the above baseband signal transmitting apparatus based on wavelength division multiplexing, where the baseband signal transmitting method includes the following steps:
acquiring a signal format of a baseband signal to be transmitted;
and controlling the laser to output an optical signal with a first preset wavelength or an optical signal with a second preset wavelength according to the signal format of the baseband signal to be transmitted, wherein 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 a third aspect, an embodiment of the present invention further provides a computer-readable storage medium, where the storage medium stores a computer program, and the computer program is configured to execute any one of the baseband signal transmission methods provided in the embodiments of the present invention.
In a fourth aspect, an embodiment of the present invention further provides an electronic device, where the electronic device includes:
a processor;
a memory for storing the processor-executable instructions;
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 transmission methods provided in the embodiments of the present invention.
In the embodiment of the invention, by additionally arranging the light filtering component which allows the optical signal with the wavelength within the preset wavelength range to pass through, and controlling the laser to output the optical signal with the first preset wavelength or the optical signal with the second preset wavelength according to the signal format of the baseband signal to be transmitted, wherein 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 switching between the light emitting and non-light emitting of the baseband signal transmitting device can be realized by adjusting the optical signal with different wavelengths output by the laser. The mode can reduce the variation range of the control signal (such as current, temperature or mechanical angle) of the laser, solves the problems that the existing mode of turning on or off the laser realizes the switching between light emitting and non-light emitting, the wavelength drift is serious, the communication quality of adjacent channels is influenced, and the optical fiber communication effect is further influenced, reduces the drift of the wavelength of the optical signal, improves the precision of the wavelength, improves the communication quality of the adjacent channels, and further improves the optical fiber communication effect.
Drawings
The above and other objects, features and advantages of the present application will become more apparent by describing in more detail embodiments of the present application with reference to the attached drawings. The accompanying drawings are included to provide a further understanding of the embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings, like reference numbers generally represent like parts or steps.
FIG. 1 is a graph of wavelength of an optical signal emitted by a laser as a function of current value during a study in accordance with the present invention;
fig. 2 is a block diagram of a baseband signal transmitting apparatus according to an embodiment of the present invention;
fig. 3 is a block diagram of another baseband signal transmitting apparatus according to an embodiment of the present invention;
fig. 4 is a block diagram of another baseband signal transmitting apparatus according to 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 according to an embodiment of the present invention
Fig. 8 is a schematic diagram of a hardware structure of an electronic device according to an embodiment of the present invention.
Detailed Description
Hereinafter, example embodiments according to the present application will be described in detail with reference to the accompanying drawings. It should be understood that the described embodiments are only some embodiments of the present application and not all embodiments of the present application, and that the present application is not limited by the example embodiments described herein.
The prior art base band signal transmitting device only comprises a laser and a light emitting control module. And the light emitting control module is used for controlling the laser to output an optical signal with a preset wavelength according to the baseband signal to be transmitted. For the existing baseband signal transmitting device, the switching between the light emitting and non-light emitting of the baseband signal transmitting device is realized by turning on or off the laser. For example, if the laser is a current-regulated laser, the laser is controlled to emit light by providing a preset current control signal to the laser, that is, providing a bias current to the laser; the laser is controlled not to emit light by stopping the supply of the current control signal to the laser. Fig. 1 is a graph of the wavelength of an optical signal emitted by a laser as a function of current value during the course of a study according to the present invention. Referring to fig. 1, after the laser is turned on, the current value gradually increases from 0 with the passage of time, the wavelength of the optical signal emitted by the laser gradually increases, and the wavelength variation range gradually increases. The larger the wavelength variation range is, the more serious the wavelength drift is, and the larger the influence on the wavelength accuracy is. In the traditional wavelength division multiplexing field, the requirement on wavelength precision is strict, and the interference on adjacent optical channel communication can be caused due to insufficient precision, so that the effect of optical fiber communication is influenced.
In view of the above, an embodiment of the present invention provides a scheme of a baseband signal transmitting apparatus based on wavelength division multiplexing, in which a light filtering component is added to allow an optical signal with a wavelength within a preset wavelength range to pass through, and a laser is controlled to output an optical signal with a first preset wavelength or an optical signal with a second preset wavelength according to a signal format of the baseband signal to be transmitted, where 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, so that switching between light emission and non-light emission of the baseband signal transmitting apparatus can be achieved by adjusting the laser to output optical signals with different wavelengths. The mode can reduce the variation range of laser control signals (such as current, temperature or mechanical angle) so as to reduce the wavelength drift of optical signals, improve the wavelength precision, improve the communication quality of adjacent channels and further improve the optical fiber communication effect.
Fig. 2 is a block diagram of a baseband signal transmitting apparatus according to an embodiment of the present invention. Referring to fig. 2, the baseband signal transmitting apparatus includes: the laser device comprises a laser 11, a light-emitting control module 12 and a light filtering assembly 13 arranged on an output light path of the laser device 11. A light filtering component 13 for allowing light signals with wavelengths in a preset wavelength range to pass through; the light emission control module 12 is configured to obtain a signal format of a baseband signal to be transmitted, and control the laser 11 to output an optical signal with a first preset wavelength or an optical signal with a second preset wavelength according to the signal format of the baseband signal to be transmitted, where the first preset wavelength is within a 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.
The baseband signal refers to the original electrical signal sent by an information source (also called a transmitting end) without modulation. In this application, the baseband signal is a digital baseband signal. The digital baseband signal refers to an electrical waveform (voltage or current) of a 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 binary symbols. Optionally, the signal format of the baseband signal includes 0 and 1. 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, the signal format 0 of the baseband signal corresponds to the binary symbol 1, and the signal format 1 of the baseband signal corresponds to the binary symbol 0.
In the present 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 combination of two or more of a current regulated laser, a temperature regulated laser, and a mechanically regulated laser.
The current-regulated laser 11 is a laser that forms different wavelengths based on a current control technique. The working principle is that the relative refractive index of the fiber grating can be changed by changing the current of the fiber grating and the phase control part at different positions in the tunable laser, so as to generate different spectrums, and the selection of specific wavelength is carried out by the superposition of the different spectrums generated by the fiber gratings in different areas, so as to generate the laser with the required specific wavelength.
A temperature-regulated Laser, such as a Distributed Feedback Laser (DFB), operates by regulating the temperature within a Laser cavity, thereby allowing the DFB to emit Laser light at different wavelengths.
Mechanically tuned lasers are typically implemented using Micro-Electro-mechanical systems (MEMS). A tunable laser based on mechanical control technology mainly comprises a DFB laser array, a tiltable MEMs lens and other control and auxiliary parts. There are several DFB laser arrays for the DFB laser array area. The rotation angle of the MEMs lens is controlled to select the required specific wavelength, so that the light with the required specific wavelength is output.
In the embodiment of the present invention, by adding the light filtering component 13 that allows the optical signal with the wavelength within the preset wavelength range to pass through, and setting the optical signal with the first preset wavelength or the optical signal with the second preset wavelength to be output by controlling the laser 11 according to the signal format of the baseband signal to be transmitted, 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, in other words, when the laser 11 outputs the optical signal with the first preset wavelength, since the first preset wavelength is within the preset wavelength range of the light filtering component 13, it can continue to transmit after passing through the light filtering component 13, which is equivalent to that the baseband signal transmitting device emits light. When the laser 11 outputs the optical signal with the second predetermined wavelength, the second predetermined wavelength is not within the predetermined wavelength range of the optical filter 13, and the optical filter 13 cannot be penetrated by the second predetermined wavelength, which is equivalent to that the baseband signal transmitting device does not emit light. Thus, the switching between the light emitting and non-light emitting of the baseband signal transmitting device can be realized by controlling the laser 11 to output the optical signal with the first preset wavelength or the optical signal with the second preset wavelength.
Since the laser 11 is always in the light emitting state in the process of controlling the laser 11 to output the optical signal with the first preset wavelength or the optical signal with the second preset wavelength, in practice, only the size of the laser control signal needs to be changed.
Illustratively, with continued reference to fig. 1, if the laser is a current regulated laser, when a first bias current I1 is provided to the laser, the laser outputs an optical signal at a first predetermined wavelength (the optical signal is satisfactory for users and can pass through the optical filter assembly 13); when the second bias current I2 is provided to the laser, the laser outputs an optical signal with a second preset wavelength (the optical signal does not meet the user's requirement and cannot pass through the optical filter assembly 13); when the bias current is not supplied to the laser, that is, when the bias current signal is 0, the laser is turned off and does not output the optical signal, it can be considered that the wavelength of the optical signal is 0 at this time. In practice, I1-I2 can be set to be less than I1-0. Thus, compared with the scheme that the laser is provided with the first bias current I1 or 0 to realize the switching between the light state and the non-light state, the scheme that the laser is provided with the first bias current I1 and the second bias current I2 to realize the switching between the light state and the non-light state can reduce the variation range of the bias current and further reduce the variation range of the wavelength of the optical signal. Therefore, the baseband signal transmitting device provided by the application can reduce the wavelength drift of the optical signal, improve the wavelength precision, improve the adjacent channel communication quality 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 the optical signal with the first preset wavelength to outputting the optical signal with the second preset wavelength, or in the process of switching the laser 11 from outputting the optical signal with the second preset wavelength to outputting the optical signal with the first preset wavelength, the variation range of the laser control signal (such as current, temperature, mechanical angle, or the like) may be set as small as possible, so as to further reduce the wavelength drift 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.
Fig. 3 is a block diagram of another baseband signal transmitting apparatus according to an embodiment of the present invention. Referring to fig. 3, in the baseband signal transmission apparatus, the light emission control module 12 includes: a signal format acquisition unit 121 and a first signal transmission unit 122. The signal format obtaining unit 121 is configured to obtain a signal format of a baseband signal to be sent; a first signal sending unit 122, configured to send a first wavelength control signal to the laser 11 when the baseband signal to be sent is in a first signal format, so that the laser 11 outputs an optical signal with a first preset wavelength based on the first wavelength control signal; and is configured to send a second wavelength control signal to the laser 11 when the baseband signal to be sent is in a second signal format, so that the laser 11 outputs an optical signal with a second preset wavelength based on the second wavelength control signal. The essence of the arrangement is that when the baseband signal to be transmitted is in the first signal format, the baseband signal transmitting device finally outputs an optical signal, that is, emits light; when the baseband signal to be transmitted is in the second signal format, the baseband signal transmitting device finally outputs no optical signal, that is, does not emit light.
Optionally, the first signal format is 0, and the second signal format is 1; alternatively, 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 regulation type laser, a temperature regulation type laser, and a mechanical regulation type laser. Alternatively, the laser 11 may comprise a combination of several of the above-mentioned lasers.
The first wavelength control signal and the second wavelength control signal are both one of a current control signal, a temperature adjustment signal or a mechanical adjustment signal.
For example, for the current-regulated laser 11, the first wavelength control signal and the second wavelength control signal may both be set to be current control signals. For a temperature regulated laser, both the first wavelength control signal and the second wavelength control signal may be set to be temperature regulated signals. For a mechanically tuned laser, the first wavelength control signal and the second wavelength control signal may both be set to be mechanical tuning signals.
It is considered that in practice the filters will pass different ranges of wavelengths depending on their temperature. To this end, optionally, the light filtering assembly 13 includes a temperature control filter 131 and a constant temperature control module 132; the constant temperature control module 132 is configured to control the temperature stability of the temperature control filter 131. The arrangement can stabilize the filtering effect of the light filtering component 13, so that the light filtering component can stably allow the optical signal with the first preset wavelength to pass through and forbid the optical signal with the second preset wavelength from passing through, thereby achieving the purpose of improving the reliability of the baseband signal transmitting device.
In the wavelength division multiplexing technique, a plurality of lasers 11 simultaneously transmit a plurality of laser beams having different wavelengths on a single optical fiber. In practice, the selection of the laser wavelength is required according to the configuration of the receiver or the requirements of the user. As can be seen from the above solutions, when the baseband signal transmitting apparatus emits light, the wavelength of the finally emitted optical signal is within the wavelength range of the optical signal that the optical filtering component 13 can allow to pass through. In other words, the wavelength of the laser emitted from the baseband signal transmitting device is determined by the light filtering component 13. To this end, the temperature control filter 131 optionally includes a semiconductor cooler 1311 and a filter body 1312; the constant temperature control module 132 is connected to the semiconductor refrigerator 1311, and is used for controlling the semiconductor refrigerator 1311 to operate, so that the filter body 1312 is at different operating temperatures; the predetermined wavelength range of the filter main body changes with the operating temperature of the filter main body 1312. Illustratively, the central wavelength in the predetermined wavelength range of the filter body is defined as λ, and λ is positively correlated with the operating 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 requirements of different users.
On the basis of the above technical solution, optionally, the thermostatic control module 132 includes: the configuration instruction receiving unit is used for receiving a wavelength configuration instruction and generating a temperature control signal based on the wavelength configuration instruction; and the second signal sending unit is used for sending the temperature control signal to the semiconductor refrigerator. The wavelength configuration instruction can be generated according to the configuration condition of the receiver or the requirement of a user. The purpose of this is to provide a way to configure the wavelength of the optical filter (i.e. to adjust the wavelength range of the optical signal that the optical filter main body 1312 can allow to pass through according to the configuration of the receiver or the user's requirement), so as to meet the requirements of different users.
It should be noted that, in practice, generally, for a certain receiver or user, the configuration of the receiver or the user's requirement is determined, and therefore, the filter wavelength configuration is performed only once.
On the basis of the above technical solutions, optionally, the thermostatic control module 132 and the lighting control module 12 are integrated in a thermostatic controller. The purpose of this arrangement is to further keep the wavelength of the laser light output from the baseband signal transmission 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 optical fiber communication effect.
Fig. 4 is a block diagram of another baseband signal transmitting apparatus according to an embodiment of the present invention. Referring to fig. 4, in the baseband signal transmitting apparatus, the Laser 11 may be an FP (Fabry-Perot) Laser, a dfb (distributed feedback Laser) Laser, or an EML (electro-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 a control circuit thereof, so that the optical filter main body is at a set working temperature. The MCU also obtains the signal format of the baseband signal to be transmitted. The bias current control circuit sends a first wavelength control signal to the APC when the baseband signal to be sent is in a first signal format, and sends a second wavelength control signal to the APC when the baseband signal to be sent is in a 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 driving IC to output a first bias current signal to control the laser 11 to output an optical signal with a 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 with a second preset wavelength. While the APC also receives a 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 fed back 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 is kept stable.
The MCU is also connected to an ATC (automatic Temperature control) through a TEC Temperature control circuit, which 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, the ATC enables a refrigerator (TEC) in the laser assembly to work, a TEC component absorbs heat, and the temperature is reduced; when the temperature is lower than the set temperature, the ATC control circuit enables the refrigerator to work, the TEC component is heated, and the temperature is increased, so that the working temperature of the laser tends to be stable, the temperature of the tube core of the laser is guaranteed to be stable and unchanged, and the wavelength of an optical signal emitted from the laser is further controlled stably.
An embodiment of the present invention further provides a baseband signal sending method, and fig. 5 is a flowchart of a baseband signal sending method provided in an embodiment of the present invention. The baseband signal transmitting method is suitable for any baseband signal transmitting device provided by the embodiment of the invention.
Referring to fig. 5, the baseband signal transmitting method includes the steps of:
s210, acquiring a signal format of a baseband signal to be transmitted.
S210, controlling the laser to output an optical signal with a first preset wavelength or an optical signal with a second preset wavelength according to a signal format of a baseband signal to be transmitted, where the first preset wavelength is within a preset wavelength range of the optical filter assembly, and the second preset wavelength is not within the preset wavelength range of the optical filter assembly.
Since the baseband signal transmitting method provided by the embodiment of the present invention is applicable to any one of the baseband signal transmitting apparatuses provided by the embodiments of the present invention, the method has the same or corresponding beneficial effects as the applicable baseband signal transmitting apparatus, and details are not repeated here.
Optionally, when the baseband signal to be transmitted is in a first signal format, transmitting a first wavelength control signal to the laser, so that the laser outputs an optical signal with a first preset wavelength based on the first wavelength control signal; and when the baseband signal to be transmitted is in a second signal format, transmitting a second wavelength control signal to the laser, so that the laser outputs an optical signal with a second preset wavelength based on the second wavelength control signal.
Optionally, the first signal format is 0, and the second signal format is 1; alternatively, the first signal format is 1 and the second signal format is 0.
Fig. 6 is a flowchart of another method for transmitting baseband signals according to an embodiment of the present invention. In fig. 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 transmission method includes the steps of:
s310, obtaining a signal format of a baseband signal to be transmitted.
S320, determining whether the signal format of the baseband signal to be transmitted is 0, if so, performing S330, and if not, performing S340.
And S330, sending a second wavelength control signal to the laser so that the laser outputs an optical signal with a second preset wavelength based on the second wavelength control signal, and the baseband signal sending device does not emit light.
S340, sending a first wavelength control signal to the laser, so that the laser outputs an optical signal with 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 a plurality of binary symbols 0 and a plurality of binary symbols 1, if the current baseband signal is not completely transmitted, S310 is repeatedly executed after S330 and S340. If the current baseband signal is transmitted, it is ended after S330 and S340.
Fig. 7 is a flowchart of filter wavelength configuration in a baseband signal transmission method according to an embodiment of the present invention. With reference to figure 7 of the drawings,
s410, receiving a wavelength configuration instruction, and generating a temperature control signal based on the wavelength configuration instruction.
And S420, sending the temperature control signal to the semiconductor cooler so that the semiconductor cooler works and the filter body is at the set working temperature.
Therefore, the method is beneficial to meeting the requirements of different users and improving the universality of the baseband signal transmitting method.
The embodiment of the present invention further 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 transmitting method provided in the embodiment of the present application.
The computer program may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + +, or the like, and conventional procedural programming languages, such as the "C" programming language or similar programming languages, to carry out the operations of embodiments of the present application. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server.
The computer-readable storage medium may take any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may include, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
The embodiment of the invention also provides the electronic equipment. Fig. 8 is a schematic diagram of a hardware structure of an electronic device according to an embodiment of the present invention, and as shown in fig. 8, the electronic device includes:
one or more processors 501, one processor 501 being exemplified in fig. 8;
a 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 by a bus or other means, and fig. 8 illustrates the connection by the bus as an example.
The memory 502, which is a non-transitory computer-readable storage medium, may be used for storing software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the baseband signal transmission method in the embodiments of the present invention. The processor 501 executes various functional applications of the server and data processing, that is, implements the baseband signal transmission method of the above-described method embodiment, by executing software programs, instructions, and modules stored in the memory 502.
The memory 502 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to use of the electronic device, and the like. Further, the memory 502 may include high speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, memory 502 may optionally include memory located remotely from processor 501, which may be connected to the terminal device via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input device 503 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the electronic apparatus. The output device 504 may include a display device such as a display screen.
The foregoing describes the general principles of the present application in conjunction with specific embodiments, however, it is noted that the advantages, effects, etc. mentioned in the present application are merely examples and are not limiting, and they should not be considered essential to the various embodiments of the present application. Furthermore, the foregoing detailed description of the invention is provided for the purpose of illustration and understanding only, and is not intended to be limiting, since the detailed description is not intended to be exhaustive or to limit the invention to the precise form disclosed.
The block diagrams of devices, apparatuses, systems referred to in this application are only given as illustrative examples and are not intended to require or imply that the connections, arrangements, configurations, etc. must be made in the manner shown in the block diagrams. These devices, apparatuses, devices, systems may be connected, arranged, configured in any manner, as will be appreciated by those skilled in the art. Words such as "including," "comprising," "having," and the like are open-ended words that mean "including, but not limited to," and are used interchangeably therewith. The words "or" and "as used herein mean, and are used interchangeably with, the word" and/or, "unless the context clearly dictates otherwise. The word "such as" is used herein to mean, and is used interchangeably with, the phrase "such as but not limited to".
It should also be noted that in the devices, apparatuses, and methods of the present application, the components or steps may be decomposed and/or recombined. These decompositions and/or recombinations are to be considered as equivalents of the present application.
The previous description of the inventive aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the application. Thus, the present application is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The foregoing description has been presented for purposes of illustration and description. Furthermore, this description is not intended to limit embodiments of the application to the form of the invention herein disclosed. While a number of example aspects and embodiments have been discussed above, those of skill in the art will recognize certain variations, modifications, alterations, additions and sub-combinations thereof.
Claims (13)
1. A baseband signal transmission apparatus, comprising: the device comprises a laser, a light emitting control module and a light ray filtering component, wherein the light ray filtering component is arranged on an output light path of the laser;
the light ray filtering component is used for allowing optical signals with the wavelength within a preset wavelength range to pass through;
the light emission control module is configured to acquire a signal format of a baseband signal to be transmitted, and control the laser to output an optical signal with a first preset wavelength or an optical signal with a second preset wavelength according to the signal format of the baseband signal to be transmitted, where the first preset wavelength is within a preset wavelength range of the light filtering assembly, and the second preset wavelength is not within the preset wavelength range of the light filtering assembly.
2. The baseband signal transmission apparatus according to claim 1, wherein the light emission control module comprises:
a signal format obtaining unit, configured to obtain a signal format of a baseband signal to be sent;
a first signal sending unit, configured to send a first wavelength control signal to the laser device when the baseband signal to be sent is in a first signal format, so that the laser device outputs an optical signal with the first preset wavelength based on the first wavelength control signal; and the optical signal processing unit is used for sending a second wavelength control signal to the laser when the baseband signal to be sent is in a second signal format, so that the laser outputs an optical signal with a second preset wavelength based on the second wavelength control signal.
3. The baseband signal transmission apparatus according to claim 2, wherein:
if the first signal format is 0, the second signal format is 1; alternatively, the first and second electrodes may be,
if the first signal format is 1, the second signal format is 0.
4. The baseband signal transmission apparatus according to claim 2,
the laser comprises one or more of a current-regulated laser, a temperature-regulated laser and a mechanical-regulated laser.
5. The baseband signal transmitting device according to claim 1, wherein the light filtering assembly includes a temperature control filter and a constant temperature control module;
the constant temperature control module is used for controlling the temperature stability of the temperature control optical filter.
6. The baseband signal transmission apparatus according to claim 5, wherein the temperature-controlled filter includes a semiconductor refrigerator and a filter body;
the constant temperature control module is connected with the semiconductor refrigerator and used for controlling the semiconductor refrigerator to work so as to enable the optical filter main body to be at different working temperatures.
7. The baseband signal transmitting apparatus according to claim 6, wherein the constant temperature control module comprises:
the device comprises a configuration instruction receiving unit, a temperature control unit and a control unit, wherein the configuration instruction receiving unit is used for receiving a wavelength configuration instruction and generating a temperature control signal based on the wavelength configuration instruction;
and the second signal sending unit is used for sending the temperature control signal to the semiconductor refrigerator.
8. A baseband signal transmission method based on the baseband signal transmission apparatus according to any one of claims 1 to 7, comprising the steps of:
acquiring a signal format of a baseband signal to be transmitted;
and controlling the laser to output an optical signal with a first preset wavelength or an optical signal with a second preset wavelength according to the signal format of the baseband signal to be transmitted, wherein 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.
9. The method according to claim 8, wherein when the baseband signal to be transmitted is in a first signal format, a first wavelength control signal is transmitted to the laser, so that the laser outputs an optical signal with a first preset wavelength based on the first wavelength control signal; and the number of the first and second groups,
and when the baseband signal to be transmitted is in a second signal format, transmitting a second wavelength control signal to the laser, so that the laser outputs an optical signal with a second preset wavelength based on the second wavelength control signal.
10. The method for transmitting baseband signals 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 0.
11. The method for transmitting baseband signals according to claim 8, further comprising:
receiving a wavelength configuration instruction, and generating a temperature control signal based on the wavelength configuration instruction;
and sending the temperature control signal to the semiconductor cooler so that the semiconductor cooler works and the optical filter main body is at a set working temperature.
12. A computer-readable storage medium, wherein the storage medium stores a computer program for executing the baseband signal transmission method according to any one of claims 8 to 11.
13. An electronic device, characterized in that the electronic device comprises:
a processor;
a memory for storing the processor-executable instructions;
the processor is configured to read the executable instructions from the memory and execute the executable instructions to implement the baseband signal transmission method according to any one of claims 8 to 11.
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| CN201911375754.4A CN111092690A (en) | 2019-12-27 | 2019-12-27 | WDM-based baseband signal transmission device, method, storage medium and electronic device |
| PCT/CN2020/139876 WO2021129854A1 (en) | 2019-12-27 | 2020-12-28 | Wdm-based baseband signal transmission apparatus and method, storage medium, and electronic device |
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| WO2021129854A1 (en) * | 2019-12-27 | 2021-07-01 | 京信网络系统股份有限公司 | Wdm-based baseband signal transmission apparatus and method, storage medium, and electronic device |
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| CN111092690A (en) * | 2019-12-27 | 2020-05-01 | 京信通信系统（中国）有限公司 | WDM-based baseband signal transmission device, method, storage medium and electronic device |
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| EP2507877A1 (en) * | 2009-12-02 | 2012-10-10 | Huawei Technologies Co. Ltd. | Method and system for wavelength stabilization and locking for wavelength division multiplexing transmitters |
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