CN116131992A - Optical communication method, system, communication device and storage medium - Google Patents

Abstract

The application provides an optical communication method, an optical communication system, communication equipment and a storage medium, which relate to the technical field of communication and are used for guaranteeing the stability of optical power in the optical signal transmission process, so that the transmission performance of an optical communication system is improved. The method comprises the following steps: acquiring a wavelength channel occupied by an opened service in an optical communication system and a total wavelength channel of the optical communication system, and determining the rest wavelength channels of the optical communication system according to the wavelength channel occupied by the opened service and the total wavelength channel; filtering the preset optical noise signal to obtain a first optical wave and a second optical wave; the first light wave and the second light wave have different frequencies; combining the first light wave and the second light wave to obtain combined light waves, and filling the combined light waves into each remaining wavelength channel respectively.

Description

Optical communication method, system, communication device and storage medium

technical field

The present application relates to the technical field of communication, and in particular to an optical communication method, system, communication device and storage medium.

Background technique

Large-capacity and long-distance have always been important evolution directions of optical transmission systems. For example, at present, optical transport network (Optical Transport Network, OTN) system or optical wavelength division multiplexing (Wavelength Division Multiplexing, WDM) system generally adopts coherent optical communication technology. main factor. In order to compensate for fiber loss, an optical amplifier (Optical Amplifier, OA) needs to be placed after each fiber span to compensate for the loss of the fiber span.

However, every time the optical signal is amplified by a stage of OA, the loss of optical power will be caused, which will lead to the deterioration of the system Optical Signal Noise Ratio (OSNR) and the decrease of transmission performance.

Contents of the invention

The present application provides an optical communication method, system, communication device, and storage medium, which are used to ensure the stability of optical power during optical signal transmission, thereby improving the transmission performance of the optical communication system.

In order to achieve the above object, the application adopts the following technical solutions:

In the first aspect, an optical communication method is provided, which is applied to an optical communication system. The method includes: obtaining the wavelength channels occupied by the opened services in the optical communication system and the total wavelength channels of the optical communication system, and according to the occupied wavelength channels of the opened services, The wavelength channel and the total wavelength channel determine the remaining wavelength channels of the optical communication system; filter the preset optical noise signal to obtain the first light wave and the second light wave; the frequencies of the first light wave and the second light wave are different; the first light wave Combine with the second light wave to obtain a combined light wave, and fill the combined light wave into each remaining wavelength channel.

Optionally, the method further includes: acquiring a white noise signal, and performing power amplification on the white noise signal to obtain a preset optical noise signal.

Optionally, performing filtering processing on the preset optical noise signal to obtain the first light wave and the second light wave includes: performing filtering processing on the preset optical noise signal through a wavelength selective switch WSS to obtain the first light wave and the second light wave.

Optionally, the WSS includes a first filtering channel and a second filtering channel; filtering the preset optical noise signal through the wavelength selective switch WSS to obtain the first light wave and the second light wave includes: inputting the preset optical noise signal into the second A filtering channel is used to obtain the first light wave; a preset optical noise signal is input into the second filtering channel to obtain the second light wave.

Optionally, the WSS also includes a waveform integration channel; combining the first light wave and the second light wave to obtain the combined light wave includes: inputting the first light wave and the second light wave into the waveform integration channel, and outputting the combined light wave.

Optionally, filling the combined light waves into the remaining wavelength channels respectively includes: filling the combined light waves into the remaining wavelength channels through an optical coupler.

In a second aspect, an optical communication system is provided, and the optical communication system includes a first optical conversion unit OTU, a second OTU, a wavelength selective switch WSS, an optical coupler, and a first optical amplifier OA; wherein, the first OTU and the optical coupler The input interface of the WSS is connected to the input interface of the optocoupler, the output interface of the optocoupler is connected to the input interface of the first OA, and the output interface of the first OA is connected to the second OTU.

Optionally, there are multiple first OAs, and the first OAs are connected in series.

Optionally, the optical communication system includes a second OA and a third OA; the output interface of the second OA is connected to the input interface of the third OA; the output interface of the third OA is connected to the input interface of the WSS.

Optionally, the WSS is connected to the input interface of the optocoupler, including: the output interface of the WSS is connected to the input interface of the optocoupler.

Optionally, the WSS further includes a first filtering channel and a second filtering channel; the grid feature of the first filtering channel is different from that of the filtering channel.

Optionally, there are multiple first OTUs, and the first OTUs are connected in parallel.

Optionally, the optical communication system further includes an optical multiplexer and demultiplexer; the first OTU is connected to the input interface of the optical coupler, including: each first OTU is connected to the input interface of the optical coupler through the optical multiplexer and demultiplexer.

Optionally, there are multiple second OTUs, and the second OTUs are connected in parallel.

Optionally, the optical communication system further includes an optical multiplexer and demultiplexer; the output interface of the first OA is connected to the second OTU, including: the output interface of the first OA is connected to each second OTU through the optical multiplexer and demultiplexer.

In a third aspect, a communication device is provided, including: a processor, and a memory for storing instructions executable by the processor; wherein, the processor is configured to execute the instructions, so as to implement the optical communication method in the first aspect above.

In a fourth aspect, a computer-readable storage medium is provided. Instructions are stored on the computer-readable storage medium. When the instructions in the computer-readable storage medium are executed by a processor of the communication device, the communication device can perform the above-mentioned first aspects of optical communication methods.

The technical solution provided by the embodiment of the present application brings at least the following beneficial effects: the wavelength channels occupied by the opened services in the optical communication system and the total wavelength channels of the optical communication system are obtained, and the wavelength channels and the total wavelength channels occupied by the opened services are obtained. channel, which determines the remaining wavelength channels of the optical communication system. Further, the preset optical noise signal is filtered to obtain the first light wave and the second light wave; the frequencies of the first light wave and the second light wave are different; the first light wave and the second light wave are combined to obtain the combined light wave, and The combined lightwaves are respectively filled into the remaining wavelength channels. In this application, through certain combinations and configurations, the noise-filled light that is almost consistent with the waveform of the signal light is obtained. Furthermore, through noise optical filling, the optical communication system always works in a stable state of saturated output (that is, all wavelength channels have optical wave transmission), so as to achieve the purpose of locking the service optical power and make the system more stable.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present application. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic diagram of a point-to-point open optical network transmission provided by an embodiment of the present application;

Fig. 2 is an example diagram of a light detection point provided by the embodiment of the present application;

Fig. 3 is a kind of optical power monitoring figure provided by the embodiment of the present application;

FIG. 4 is one of the structural schematic diagrams of an optical communication system provided by an embodiment of the present application;

FIG. 5 is the second structural schematic diagram of an optical communication system provided by an embodiment of the present application;

FIG. 6 is a working principle diagram of a wavelength selective switch provided in an embodiment of the present application;

FIG. 7 is a functional schematic diagram of a wavelength selective switch provided in an embodiment of the present application;

FIG. 8 is a schematic flowchart of an optical communication method provided in an embodiment of the present application;

FIG. 9 is a spectrum diagram of light waves corresponding to opened services provided by the embodiment of the present application;

Fig. 10 is the spectrogram after secondary OA amplification provided by the embodiment of the present application;

Fig. 11 is the odd wave noise spectrogram obtained by the WSS filtering process provided by the embodiment of the present application;

Fig. 12 is the even wave noise spectrogram obtained by the WSS filtering process provided by the embodiment of the present application;

Fig. 13 is the spectrogram after the combination of odd and even waves provided by the embodiment of the present application;

Fig. 14 is a spectrogram after filling and merging light waves provided by the embodiment of the present application;

Figure 15 is a schematic diagram of the optical power variation range before and after filling provided by the embodiment of the present application;

Fig. 16 is a schematic diagram of the influence of channel closure on the optical power of other channels when the noise light is not filled according to the embodiment of the present application;

FIG. 17 is a schematic diagram of the influence of channel closure on the optical power of other channels after filling noise light provided by the embodiment of the present application;

FIG. 18 is a schematic structural diagram of a management and control device provided in an embodiment of the present application;

FIG. 19 is a schematic structural diagram of a communication device provided by an embodiment of the present application.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

It should be noted that, in the embodiments of the present application, words such as "exemplary" or "for example" are used as examples, illustrations or descriptions. Any embodiment or design scheme described as "exemplary" or "for example" in the embodiments of the present application shall not be interpreted as being more preferred or more advantageous than other embodiments or design schemes. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete manner.

It should also be noted that, in the embodiments of the present application, "的 (English: of)", "corresponding (English: corresponding, relevant)" and "corresponding (English: corresponding)" can sometimes be used in combination. It should be pointed out that , when the difference is not emphasized, the meanings they want to express are consistent.

In order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish the same or similar items with basically the same functions and functions. A skilled person can understand that words such as "first" and "second" do not limit the quantity and execution order.

Before explaining the embodiment of the present application in detail, some related technologies involved in the embodiment of the present application will be introduced first.

Large-capacity and long-distance have always been important evolution directions of optical transmission systems. At present, optical transport network (Optical Transport Network, OTN) system or optical wavelength division multiplexing (Wavelength Division Multiplexing, WDM) system generally adopts coherent optical communication technology. factor. In order to compensate for fiber loss, an optical amplifier (Optical Amplifier, OA) needs to be placed through each fiber span to compensate for the loss of the fiber span.

Exemplarily, as shown in FIG. 1 , a schematic diagram of a point-to-point open optical network transmission is shown, wherein the open line system can connect different terminal devices (for example, optical transport units (Optical Transport Unit, OTU) of different manufacturers )). The multiplexer/demultiplexer at the source end combines the optical signals from OTUs from different manufacturers and couples them into the optical cable. After a certain distance, the optical power is attenuated. An optical amplifier (OA) should be installed on the way to restore the optical power to the original level. After multi-stage transmission and amplification, it reaches the sink and is received by the OTU.

The above-mentioned transmission process will introduce noise, which will reduce the performance index of the optical network. When the index is lower than the threshold of the receiving end, the system will generate bit errors, resulting in information transmission failure.

The current open optical network is mainly used for data center interconnection and metropolitan area transmission network, with short distances and low requirements on system performance. With the development of technology, the open optical network will gradually enter the field of long-distance transmission. In long-distance optical networks, signal optical power is a crucial factor affecting transmission performance. When optical power fluctuates, drifts, and is unstable, it is most likely to generate bit errors after multi-stage OA amplification. Therefore, ensuring the stability of the optical power of each channel is a very important technical means of the optical communication system.

At present, the common method of compensating the span loss is to monitor the optical power of each fiber span through the optical power monitoring unit, and send the monitoring results to power adjustment nodes such as gain flattening filters, adjustable attenuation combiners, or optical amplifiers. Feedback is performed so that the power adjustment node adjusts the optical power of the optical fiber span.

Exemplarily, as shown in FIG. 2 , an example diagram of light detection points is shown. Wherein, a monitoring point is provided at the output end of the OA to monitor the optical power of each channel. When it is found that the optical power changes or drifts, adjust the transmitted optical power of the OTU to ensure the stability of the optical power on the optical cable line.

However, in the early stage of project construction, when the service channels are not fully configured, the OA equipment needs to operate at a lower power, and the optical power at this time is prone to drift and jitter. For example, as shown in Figure 3, a 6-hour long-term monitoring of the single-wavelength optical power of the 400Gb/s optical transmission system found that when the number of channels is small, the optical power is in an unstable state and tends to drift upwards gradually.

In addition, when there are few service channels in the system, the process of adding and dropping waves will also affect the optical power of other channels. In an open optical network, terminal equipment and line systems come from different manufacturers. Since it is difficult to strictly unify all parameter indicators, the monitoring and adjustment of the network by the management and control system often cannot achieve the same level as that of a single manufacturer system. Reflected in the accuracy and real-time.

It can be seen that the fewer the number of service channels that have been opened, the more the number of OAs, the greater the range of optical power jitter, and the easier it is to generate bit errors at the receiving end. Therefore, it is necessary to design an optical power stabilization solution.

In view of this, this application provides an optical communication method, which makes the OA work in a state where the output optical power is nearly saturated by filling the vacant channel with optical power, so as to achieve the purpose of locking the optical power of the service and make the system more stable .

The optical communication method provided by the embodiment of the present application will be described in detail below with reference to the accompanying drawings.

Fig. 4 shows an exemplary application scenario diagram provided by the embodiment of the present application. As shown in FIG. 4 , the optical communication method provided in the embodiment of the present application may be applicable to an optical communication system 10 . The optical communication system 10 includes a first optical conversion unit OTU (11), a second OTU (12), a wavelength selection switch (Wavelength Selection Switch, WSS) (13), an optical coupler (Optical Coupler, OC) (14) and a first An optical amplifier OA (15); wherein, the first OTU (11) is connected with the input interface of the optocoupler (14), WSS (13) is connected with the input interface of the optocoupler (14), and the optocoupler (14) The output interface of the first OA (15) is connected with the input interface of the first OA (15), and the output interface of the first OA (15) is connected with the second OTU (12).

Optionally, as shown in FIG. 5, there are multiple first OAs (15), and the first OAs are connected in series.

In practical applications, the number of the first OA (15) can be flexibly set according to the size of the transmission distance. After the signal is amplified by a first OA, after a certain transmission distance and part of it is lost, it enters the next second OA for amplification, so as to ensure that the signal can reach the second OTU (12) smoothly.

Optionally, as shown in FIG. 5 , the optical communication system 10 includes a second OA (16) and a third OA (17). Wherein, the output interface of the second OA (16) is connected to the input interface of the third OA (17); the output interface of the third OA (17) is connected to the input interface of the WSS (13).

Optionally, as shown in Fig. 5, the output interface of the WSS (13) is connected to the input interface of the optocoupler (14).

Optionally, as shown in FIG. 5 , the WSS (13) further includes a first filtering channel and a second filtering channel; wherein, the grid characteristics of the first filtering channel are different from those of the filtering channel.

Optionally, as shown in FIG. 5, there are multiple first OTUs (11), and the first OTUs are connected in parallel.

Optionally, as shown in FIG. 5 , the optical communication system 10 further includes an optical multiplexer (18). Each first OTU (11) is connected to the input interface of the optical coupler (14) through an optical multiplexer (18).

Optionally, as shown in FIG. 5, there are multiple second OTUs (12), and the second OTUs (12) are connected in parallel. The output interface of the first OA (15) is connected to each second OTU (12) through an optical multiplexer (18).

It should be noted that the wavelength selective switch (WSS) is the core device of a new generation of reconfigurable optical add-drop multiplexer (Reconfigurable Optical Add-Drop Multiplexer, ROADM) technology, which uses free space optical switching technology, can be in all directions Provide channels with wavelength granularity, support remote reconfiguration of all through ports and add/drop ports, support adding/dropping any wavelength from any port, and support reconfiguration of line and local add/drop wavelengths.

Figure 6 shows the basic principle of wavelength selective switch (WSS) operation. Among them, after receiving the optical signal, the WSS device demultiplexes each wavelength according to different spatial positions; the wavelength selection unit can change the phase of a certain wavelength through the liquid crystal on silicon (LCOS) according to the need, so as to adjust the attenuation and attenuation of each wavelength. switch function.

Taking the 9-dimensional WSS device as an example, as shown in Figure 7, after the signal light enters the WSS device from the left port, each wavelength is demultiplexed according to the spatial position, and assigned to 9 different ports for output. The number of wavelengths output by each port and the sequence number of wavelengths can be adjusted.

The optical communication method provided in the embodiment of the present application will be described below with reference to the optical communication system shown in FIG. 4 .

Fig. 8 is a schematic flowchart of an optical communication method according to some exemplary embodiments. In some embodiments, the above optical communication method can be applied to the optical communication system as shown in FIG. 4 , and can also be applied to other similar communication systems.

As shown in FIG. 8 , the optical communication method provided by the embodiment of the present application includes the following S201-S204.

S201. Obtain wavelength channels occupied by activated services in the optical communication system and total wavelength channels of the optical communication system, and determine remaining wavelength channels of the optical communication system according to the wavelength channels occupied by activated services and the total wavelength channels.

As a possible implementation manner, the management and control device acquires the wavelength channels occupied by services opened in the optical communication system and the total wavelength channels of the optical communication system. Further, the management and control device subtracts the wavelength channels occupied by opened services from the total wavelength channels of the optical communication system to obtain the remaining wavelength channels of the optical communication system.

In practical applications, the management and control device may be deployed in the optical communication system shown in FIG. 4 to manage and control the optical communication system. The management and control device may be any communication device with management and control functions, and the embodiment of the present application does not limit the specific form of the management and control device.

It should be noted that the total wavelength channels of an optical communication system is the maximum number of wavelength channels that the optical communication system can carry. The number of channels is configured according to the actual situation of the optical communication system. wavelength channels. Assuming that the wavelength channels occupied by the opened services are λ1~2, λ24~25, and λ47~48, then the rest of the wavelength channels (λ3~23, λ26~46) are temporarily empty and are called remaining wavelength channels.

FIG. 9 shows a spectrum diagram of the light wave corresponding to the above-mentioned opened service. Wherein, the horizontal axis represents the wavelength, and the vertical axis represents the optical power. It can be seen from the spectrum diagram that there are only 6 light waves that have opened services, and the rest are noise waves. At this time, since the number of optical waves of the opened services is small, the OA device needs to operate at a lower power, which may easily cause drift and jitter of the optical power of the opened services.

S202. The management and control device performs filtering processing on the preset optical noise signal to obtain a first light wave and a second light wave.

Wherein, the frequencies of the first light wave and the second light wave are different.

As a possible implementation manner, the control device acquires a white noise signal, and performs power amplification on the white noise signal to obtain a preset optical noise signal. Further, the management and control device filters the preset optical noise signal through the wavelength selective switch WSS to obtain the first light wave and the second light wave.

Exemplarily, the management and control device can be cascaded through two levels of OA (such as the second OA (16) and the third OA (17) in Figure 5), the first level of OA (such as the second OA (16)) has no input, White noise with low power is generated through spontaneous radiation, which is used as the input of the second-stage OA (such as the third OA (17)), and after being amplified by the second-stage OA, a flat high-power wide-spectrum light source is generated as shown in Figure 10 .

Further, referring to Figure 5, the wide-spectrum light source is input through the IN port of the main optical channel of the WSS with a bidirectional structure, and the odd-numbered waves (odd) and even-numbered waves (even) are filtered out by the two down-wave dimension ports of DM1 and DM2, that is, DM1 is set To block all even waves, allow odd waves to pass; set DM2 to block all odd waves and allow even waves to pass. Since WSS has the feature of adjustable grid, the spectral width of wavelength can be flexibly set according to the requirements of optical network parameters, such as: 200Gb/s system channel is 75GHz interval, 400Gb/s system channel is 100GHz interval. FIG. 11 shows an odd wave noise spectrum obtained by WSS filtering, and FIG. 12 shows an even wave noise spectrum obtained by WSS filtering.

S203. The management and control device combines the first light wave and the second light wave to obtain a combined light wave.

As a possible implementation manner, the management and control device inputs the first light wave and the second light wave into the waveform integration channel, and outputs the combined light wave.

Exemplarily, referring to FIG. 5 , the two up-wave dimension ports AM1 and AM2 in the WSS combine the odd and even waves, and output the combined light waves through the OUT port of the main optical channel as noise light for filling. Fig. 13 shows the spectrogram after combining odd and even waves.

S204. The management and control device respectively fills the combined light waves into each remaining wavelength channel.

As a possible implementation manner, the management and control device respectively fills the combined light waves into the remaining wavelength channels through optical couplers.

Exemplarily, referring to FIG. 5 , the combined optical wave formed in S203 is filled into each remaining wavelength channel through an optical coupler, so as to form a full-wave transmission on the communication line.

Figure 14 shows the spectrogram after filling the combined light waves into the remaining wavelength channels respectively. Compared with the spectrogram of the light waves corresponding to the opened services shown in Figure 9, the waveform of the combined light wave is almost the same as the signal light waveform, so that , so that the network can run in a stable saturated state even when it is initially light-loaded, improving system stability.

Taking the above 6-wave system as an example (service channels are λ1~2, λ24~25, λ47~48, fully equipped with 48 waves), the single-wave optical power before filling the noise light was monitored for 6 hours, and the results are shown in Table 1. .

Table 1 Power monitoring results of unfilled noise light

The single-wave optical power after filling the noise light was monitored for 6 hours, and the results are shown in Table 2.

Table 2 Power monitoring results after filling noise light

Figure 15 shows the change of optical power before and after filling. It can be seen that within a 6-hour monitoring period, after filling with noise light, the change range of signal optical power is reduced by more than 0.2dB.

In addition, when the system expands/retires the network, it reduces the impact of the wave increase and decrease process on the optical power of other service channels. For example, the above-mentioned 6-wave system is still investigated, and optical power monitoring is carried out during the process of increasing and decreasing waves: the service channels are λ1~2, λ24~25, and λ47~48, a total of 6 waves. During the test, λ1~2 is turned off, and λ24~25 is investigated. , the change of optical power of λ47~48, the test results are shown in Figure 16 and Figure 17. Among them, FIG. 16 is a schematic diagram of the influence of channel closing on the optical power of other channels when the noise light is not filled, and FIG. 17 is the influence of channel closing on the optical power of other channels after filling the noise light. The test results show that when the noise light is not filled, the optical power of other channels changes by more than 1dB before and after turning off λ1,2; after filling the noise light, the optical power of other channels changes only 0.43dB before and after turning off λ1,2 .

The technical solution provided by the embodiment of the present application brings at least the following beneficial effects: the wavelength channels occupied by the opened services in the optical communication system and the total wavelength channels of the optical communication system are obtained, and according to the occupied wavelength channels of the opened services, The wavelength channels and the total wavelength channels determine the remaining wavelength channels of the optical communication system. Further, filtering the preset optical noise signal to obtain a first light wave and a second light wave; the frequencies of the first light wave and the second light wave are different; combining to obtain combined light waves, and respectively filling the combined light waves into each of the remaining wavelength channels. In this application, through certain combinations and configurations, the noise-filled light that is almost consistent with the waveform of the signal light is obtained. Furthermore, through noise optical filling, the optical communication system always works in a stable state of saturated output (that is, all wavelength channels have optical wave transmission), so as to achieve the purpose of locking the service optical power and make the system more stable.

The foregoing embodiments mainly introduce the solutions provided by the embodiments of the present application from the perspective of devices (devices). It can be understood that, in order to implement the above method, the device or equipment includes hardware structures and/or software modules corresponding to the execution of each method flow, and these hardware structures and/or software modules corresponding to the execution of each method flow can constitute a determination of material information device. Those skilled in the art should easily realize that, in combination with the algorithm steps of the examples described in the embodiments of the invention described herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software drives hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

The embodiment of the present application can divide the functional modules of the device or equipment according to the above method examples. For example, the device or equipment can divide each functional module corresponding to each function, or integrate two or more functions into one processing module. . The above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules. It should be noted that the division of modules in the embodiment of the present application is schematic, and is only a logical function division, and there may be other division methods in actual implementation.

Fig. 18 is a schematic structural diagram of a management and control device according to an exemplary embodiment. Referring to FIG. 18 , the management and control device 30 provided by the embodiment of the present application includes an acquisition unit 301 and a processing unit 302 .

The obtaining unit 301 is configured to obtain the wavelength channels occupied by the opened services in the optical communication system and the total wavelength channels of the optical communication system, and determine the remaining wavelengths of the optical communication system according to the wavelength channels occupied by the opened services and the total wavelength channels channel;

The processing unit 302 is configured to filter the preset optical noise signal to obtain a first light wave and a second light wave; the frequencies of the first light wave and the second light wave are different;

The processing unit 302 is further configured to combine the first light wave and the second light wave to obtain a combined light wave, and respectively fill the combined light wave into each remaining wavelength channel.

Fig. 19 is a schematic structural diagram of a communication device provided by the present application. As shown in Fig. 19, the communication device 40 may include at least one processor 401 and a memory 402 for storing processor-executable instructions, wherein the processor 401 is configured to execute the instructions in the memory 402, so as to realize the optical communication method.

In addition, the communication device 40 may further include a communication bus 403 and at least one communication interface 404 .

The processor 401 may be a processor (central processing units, CPU), a micro-processing unit, an ASIC, or one or more integrated circuits for controlling the execution of programs in the solution of this application.

Communication bus 403 may include a path for communicating information between the components described above.

The communication interface 404 uses any device such as a transceiver for communicating with other devices or communication networks, such as Ethernet, radio access network (radio access network, RAN), wireless local area network (wireless local area networks, WLAN), etc.

Memory 402 may be read-only memory (read-only memory, ROM) or other types of static storage devices that can store static information and instructions, random access memory (random access memory, RAM) or other types that can store information and instructions It can also be an electrically erasable programmable read-only memory (electrically erasable programmable read-only memory, EEPROM), read-only disc (compact discread-only memory, CD-ROM) or other optical disc storage, optical disc storage (including compressed optical disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), magnetic disk storage medium or other magnetic storage device, or a computer that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer Any other medium, but not limited to it. The memory may exist independently and be connected to the processor 401 through a bus. The memory can also be integrated with the processor 401 .

Wherein, the memory 402 is used to store instructions for executing the solution of the present application, and the execution is controlled by the processor 401 . The processor 401 is configured to execute the instructions stored in the memory 402, so as to realize the functions in the method of the present application.

As an example, with reference to FIG. 18 , the functions implemented by the acquisition unit 301 and the processing unit 302 in the management and control device 30 are the same as those of the processor 401 in FIG. 19 .

In a specific implementation, as an embodiment, the processor 401 may include one or more CPUs, for example, CPU0 and CPU1 in FIG. 19 .

In a specific implementation, as an embodiment, the communication device 40 may include multiple processors, for example, the processor 401 and the processor 407 in FIG. 19 . Each of these processors may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (eg, computer program instructions).

In a specific implementation, as an embodiment, the communication device 40 may further include an output device 405 and an input device 406 . Output device 405 is in communication with processor 401 and may display information in a variety of ways. For example, the output device 405 may be a liquid crystal display (liquid crystal display, LCD), a light emitting diode (light emitting diode, LED) display device, a cathode ray tube (cathode ray tube, CRT) display device, or a projector (projector), etc. . The input device 406 communicates with the processor 401 and can accept input from the user object in various ways. For example, the input device 406 may be a mouse, a keyboard, a touch screen device, or a sensing device, among others.

Those skilled in the art can understand that the structure shown in FIG. 19 does not constitute a limitation on the communication device 40, and may include more or less components than shown in the figure, or combine some components, or adopt a different component arrangement.

In addition, the present application also provides a computer-readable storage medium. When instructions in the computer-readable storage medium are executed by a processor of the communication device, the communication device can execute the optical communication method provided by the above-mentioned embodiments.

In addition, the present application also provides a computer program product, including computer instructions, which, when the computer instructions are run on the communication device, cause the communication device to execute the optical communication method provided in the above-mentioned embodiments.

Other embodiments of the present application will be readily apparent to those skilled in the art from consideration of the specification and practice of the invention invented herein. This application is intended to cover any modification, use or adaptation of the application, these modifications, uses or adaptations follow the general principles of the application and include common knowledge or conventional technical means in the technical field not invented by the application . The specification and examples are to be considered exemplary only, with a true scope and spirit of the application indicated by the appended claims.

Claims (17)

1. A kind of optical communication method, is characterized in that, is applied to optical communication system, and described method comprises: Obtaining the wavelength channels occupied by the opened services in the optical communication system and the total wavelength channels of the optical communication system, and determining the optical communication channel according to the wavelength channels occupied by the opened services and the total wavelength channels The remaining wavelength channels of the system; Filtering the preset optical noise signal to obtain a first light wave and a second light wave; the frequencies of the first light wave and the second light wave are different; Combining the first light wave and the second light wave to obtain a combined light wave, and filling the combined light wave into each of the remaining wavelength channels. 2. The optical communication method according to claim 1, wherein the method further comprises: Acquire a white noise signal, and perform power amplification on the white noise signal to obtain the preset optical noise signal. 3. The optical communication method according to claim 1, wherein said filtering the preset optical noise signal to obtain the first light wave and the second light wave comprises: The preset optical noise signal is filtered by a wavelength selective switch WSS to obtain the first light wave and the second light wave. 4. The optical communication method according to claim 3, wherein the WSS includes a first filter channel and a second filter channel; the preset optical noise signal is filtered by the wavelength selective switch WSS, Obtaining the first light wave and the second light wave includes: inputting the preset optical noise signal into the first filter channel to obtain the first light wave; Inputting the preset optical noise signal into the second filter channel to obtain the second light wave. 5. The optical communication method according to claim 4, wherein the WSS further comprises a waveform integration channel; the combining of the first light wave and the second light wave to obtain a combined light wave comprises: The first light wave and the second light wave are input into the waveform integration channel, and the combined light wave is output. 6. The optical communication method according to claim 1, wherein said filling said combined light waves into each of said remaining wavelength channels respectively comprises: The combined light waves are respectively filled into the remaining wavelength channels through an optical coupler. 7. An optical communication system, characterized in that, the optical communication system comprises a first optical conversion unit OTU, a second OTU, a wavelength selective switch WSS, an optical coupler, and a first optical amplifier OA; Wherein, the first OTU is connected to the input interface of the optical coupler, the WSS is connected to the input interface of the optical coupler, and the output interface of the optical coupler is connected to the input interface of the first OA , the output interface of the first OA is connected to the second OTU. 8. The optical communication system according to claim 7, wherein there are multiple first OAs, and each of the first OAs is connected in series. 9. The optical communication system according to claim 8, wherein the optical communication system comprises a second OA and a third OA; the output interface of the second OA is connected to the input interface of the third OA ; The output interface of the third OA is connected to the input interface of the WSS. 10. The optical communication system according to claim 9, wherein the WSS is connected to the input interface of the optical coupler, comprising: The output interface of the WSS is connected to the input interface of the optocoupler. 11. The optical communication system according to claim 10, wherein the WSS further comprises a first filtering channel and a second filtering channel; the grid feature of the first filtering channel and the grid of the filtering channel The characteristics are different. 12. The optical communication system according to claim 7, wherein there are multiple first OTUs, and the first OTUs are connected in parallel. 13. The optical communication system according to claim 12, wherein the optical communication system also includes an optical multiplexer and demultiplexer; the first OTU is connected to the input interface of the optical coupler, including: Each of the first OTUs is connected to the input interface of the optical coupler through the optical multiplexer/demultiplexer. 14. The optical communication system according to claim 7, wherein there are multiple second OTUs, and the second OTUs are connected in parallel. 15. The optical communication system according to claim 14, wherein the optical communication system further comprises an optical multiplexer and demultiplexer; the output interface of the first OA is connected to the second OTU, comprising: The output interface of the first OA is connected to each of the second OTUs through the optical multiplexer/demultiplexer. 16. A communication device, characterized by comprising: a processor, and a memory for storing instructions executable by the processor; wherein, the processor is configured to execute the instructions, so as to implement claims 1-6 The optical communication method described in any one. 17. A computer-readable storage medium, with instructions stored on the computer-readable storage medium, wherein when the instructions in the computer-readable storage medium are executed by a processor of a communication device, the communication The device is capable of executing the optical communication method according to any one of claims 1-6.

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