Filler-wave management method and system, and control device, storage medium and computer program product

Abstract

Provided in the present disclosure are a filler-wave management method and system, and a control device, a storage medium and a computer program product. The method comprises: on the basis of first optical power of a filler wave generated by a filler-wave unit of a filler-wave management system, a control unit of the filler-wave management system adjusting the optical power of the filler wave, and / or on the basis of second optical power of wavelength-division-multiplexing (WDM) optical signals generated by an optical-layer unit of the filler-wave management system, the control unit of the filler-wave management system adjusting the optical power of the WDM optical signals, wherein the WDM optical signals comprise WDM optical signals, which are in M directions and are generated by means of the optical-layer unit performing WDM on a service wave and the filler wave generated by the filler-wave unit of the filler-wave management system, M being an integer greater than or equal to 1, and the filler wave is generated by the filler-wave unit by using N light sources, N being an integer greater than 1.

Description

Method, system, control device, storage medium and computer program product for managing filler waves

[0001] Cross-reference to Related Applications

[0002] The present disclosure claims priority from Chinese Patent Application No. 202410773294.5 filed on June 14, 2024 in China, the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0003] The present disclosure relates to the field of optical transport network (OTN), and in particular, to a method, system, control device, storage medium and computer program product for managing filler waves. BACKGROUND

[0004] The application of 100-gigabit (G) scale backbone network (i.e., 100G OTN system) has lasted for 10 years, and 400G is a major transformative generational technology to open the next cycle of backbone network. At present, the relevant industry is accelerating the development of 400G technology and industry in coordination, and has clearly adopted 400G technology based on quadrature phase shift keying (QPSK) to meet the long-distance transmission requirements of backbone network. For 400G QPSK, the baud rate is usually 130G, and the corresponding spectral width of each channel (i.e., wave channel) will reach 150 gigahertz (GHz). Therefore, in view of the basic requirement of 400G backbone network (i.e., 400G OTN system) for the number of wave channels (such as 80 wave channels), the total spectral width of the system will reach 12 terahertz (THz), and the existing C-band will be difficult to meet the wavelength planning requirements, and it is necessary to expand the wave band range to C6T+L6T band. In order to guarantee the wave channel power and performance of 400G OTN system, the related technology proposes a filler wave scheme, which realizes multiple wave channels (such as 80 wave channels) of OTN system by combining filler waves with service waves.

[0005] However, there is no effective solution for how to improve the reliability of the filler wave in the related technology. SUMMARY

[0006] To solve the problems in the related art, the embodiments of the present disclosure provide a method, system, control device, storage medium and computer program product for managing filler waves.

[0007] The technical solutions of the embodiments of the present disclosure are implemented as follows:

[0008] The embodiments of the present disclosure provide a method for managing filler waves, applied to a control unit of a filler wave management system, comprising:

[0009] adjust the first optical power of the filling wave generated by the filling wave unit of the filling wave management system;

[0010] and / or,

[0011] adjust the second optical power of the WDM optical signal generated by the optical layer unit of the filling wave management system, the WDM optical signal comprising M-direction WDM optical signals generated by the optical layer unit by WDM of service waves and filling waves generated by the filling wave unit of the filling wave management system, M being an integer greater than or equal to 1; wherein,

[0012] The filling wave is generated by the filling wave unit using N light sources, N being an integer greater than 1.

[0013] In the above scheme, the N light sources form P light source groups, each light source group comprising Q light sources, P and Q both being integers greater than 1; the filling wave unit further comprises N optical attenuators, N first optical splitters, N first monitoring units and P first optical couplers, one optical attenuator, one first optical splitter and one first monitoring unit corresponding to one light source, and one first optical coupler corresponding to one light source group.

[0014] The adjusting of the first optical power of the filling wave generated by the filling wave unit of the filling wave management system comprises:

[0015] receiving the N first optical powers sent by the N first monitoring units;

[0016] based on each first optical power, determining whether the corresponding light source is failed, and in the case where it is determined that the corresponding light source is failed, sending a first control instruction to each optical attenuator except the optical attenuator corresponding to the failed light source in the N optical attenuators, the first control instruction being used to instruct to reduce the attenuation value of the optical attenuator.

[0017] In the above scheme, the optical layer unit comprises M second optical couplers, M second optical splitters, M wavelength selective switches (WSSs) and M second monitoring units, each second optical coupler corresponding to the P first optical couplers, one second optical splitter corresponding to one second optical coupler, each second optical splitter corresponding to the M WSSs, and one WSS corresponding to one second monitoring unit.

[0018] The adjusting of the second optical power of the WDM optical signal generated by the optical layer unit of the filling wave management system comprises:

[0019] receiving M second optical powers sent by the M second monitoring units 2

[0020] judging whether there is a failed light source in the N light sources based on the M 2 second optical powers, and in a case where it is determined that there is a failed light source, sending a second control instruction to a WSS corresponding to the failed light source, the second control instruction being used to instruct to reduce an attenuation value of a branch port.

[0021] The embodiment of the present disclosure further provides a fill-in wave management method applied to a fill-in wave management system, and the method comprises the following steps:

[0022] generating fill-in waves by N light sources of the fill-in wave management system, N being an integer greater than 1;

[0023] monitoring first optical powers of the fill-in waves and reporting the first optical powers to a control unit of the fill-in wave management system, so that the control unit adjusts optical powers of the fill-in waves according to the first optical powers.

[0024] In the above scheme, the N light sources form P light source groups, each light source group comprising Q light sources, P and Q both being integers greater than 1; the fill-in wave management system further comprises N optical attenuators, N first optical splitters, N first monitoring units and P first optical couplers, one optical attenuator, one first optical splitter and one first monitoring unit corresponding to one light source, and one first optical coupler corresponding to one light source group;

[0025] the step of generating fill-in waves by the N light sources of the fill-in wave management system comprises the following steps:

[0026] each of the N light sources sends a first fill-in wave generated by itself to a corresponding optical attenuator;

[0027] each of the N optical attenuators receives the first fill-in wave sent by the corresponding light source, attenuates the first fill-in wave to obtain a second fill-in wave, and sends the second fill-in wave to a corresponding first optical splitter;

[0028] each of the N first optical splitters receives the second fill-in wave sent by the corresponding optical attenuator, splits the second fill-in wave to obtain a third fill-in wave and a fourth fill-in wave, sends the third fill-in wave to a corresponding first monitoring unit, and sends the fourth fill-in wave to a corresponding first optical coupler, the optical power of the fourth fill-in wave being greater than the optical power of the third fill-in wave;

[0029] ​Each of the P first light couplers receives Q fourth filler waves sent by the corresponding Q first optical splitters, converges the Q fourth filler waves to obtain a fifth filler wave, and sends the fifth filler wave to an optical layer unit of the filler wave management system.

[0030] In the above scheme, the first optical power of the filler wave is monitored, and the first optical power is reported to a control unit of the filler wave management system, including:

[0031] Each of the N first monitoring units receives a third filler wave sent by the corresponding first optical splitter, monitors a first optical power of the third filler wave, and reports the first optical power to the control unit.

[0032] In the above scheme, the control unit includes a first control unit, and the method further includes:

[0033] Each of the N optical attenuators, in a case of receiving a first control instruction sent by the first control unit, reduces an attenuation value of itself in response to the first control instruction; the first control instruction is sent by the first control unit based on each of N first optical powers sent by the N first monitoring units, judges whether a corresponding light source is failed, and in a case of determining that the corresponding light source is failed, the first control instruction is used to instruct to reduce the attenuation value of the optical attenuator, and is sent to each of the N optical attenuators except the optical attenuator corresponding to the failed light source.

[0034] The present disclosure also provides a filler wave management method, applied to an optical layer unit of a filler wave management system, including:

[0035] WDM is performed on the service wave and the filler wave generated by a filler unit of the filler wave management system to generate M direction WDM optical signals, M is an integer greater than or equal to 1; the filler wave is generated by the filler unit using N light sources, N is an integer greater than 1;

[0036] The second optical power of the WDM optical signal is monitored, and the second optical power is reported to a control unit of the filler wave management system, so that the control unit adjusts the optical power of the WDM optical signal according to the second optical power.

[0037] In the above scheme, the N light sources form P light source groups, and each light source group includes Q light sources, where P and Q are both integers greater than 1; the optical layer unit includes M second optical couplers, M second beam splitters, M WSSs, and M second monitoring units. Each second optical coupler corresponds to one of the P first optical couplers included in the filling wave unit, one second beam splitter corresponds to one second optical coupler, each second beam splitter corresponds to one of the M WSSs, and one WSS corresponds to one second monitoring unit.

[0038] The step of performing WDM on the service wave and the fill wave generated by the fill wave management unit of the fill wave management system to generate WDM optical signals in M ​​directions includes:

[0039] Each of the M second optical couplers receives P fifth filling waves sent by the P first optical couplers, converges the P fifth filling waves to obtain a sixth filling wave, and sends the sixth filling wave to the corresponding second beam splitter.

[0040] Each of the M second beam splitters receives the sixth filling wave sent by the corresponding second optical coupler, splits the sixth filling wave to obtain M seventh filling waves, and sends a seventh filling wave to each of the M WSSs.

[0041] Each of the M WSSs receives M seventh fill waves sent by the M second optical splitters, performs WDM on the corresponding service wave and the M seventh fill waves, and generates a WDM optical signal in one direction.

[0042] In the above scheme, monitoring the second optical power of the WDM optical signal and reporting the second optical power to the control unit of the fill wave management system includes:

[0043] Each of the M second monitoring units monitors the second optical power of each seventh fill wave received by the corresponding WSS and reports the second optical power to the control unit.

[0044] In the above scheme, the control unit includes: a second control unit; the method further includes:

[0045] Upon receiving a second control command from the second control unit, each of the M WSSs reduces the attenuation value of its branch port in response to the second control command; the second control command is based on the M values ​​sent by the M second monitoring units. 2 A second optical power is used to determine whether there is a failed light source among the N light sources. If a failed light source is determined to exist, a signal is sent to the WSS corresponding to the failed light source.

[0046] The embodiment of the present disclosure further provides a filling wave management system, comprising a filling wave unit, an optical layer unit and a control unit, the filling wave unit comprises N light sources, N is an integer greater than 1; wherein,

[0047] The filling wave unit is configured to generate a filling wave by using the N light sources, monitor a first optical power of the filling wave, and report the first optical power to the control unit;

[0048] The optical layer unit is configured to perform WDM on a service wave and the filling wave to generate M-direction WDM optical signals, monitor a second optical power of the WDM optical signals, and report the second optical power to the control unit, M is an integer greater than or equal to 1;

[0049] The control unit is configured to perform optical power adjustment on the filling wave according to the first optical power, and / or perform optical power adjustment on the WDM optical signals according to the second optical power.

[0050] In the above scheme, the N light sources form P light source groups, each light source group comprises Q light sources, and P and Q are both integers greater than 1; the filling wave unit further comprises N optical attenuators, N first optical splitters, N first monitoring units and P first optical couplers, one optical attenuator, one first optical splitter and one first monitoring unit correspond to one light source, and one first optical coupler corresponds to one light source group; wherein,

[0051] The light source is configured to send a first filling wave generated by itself to the corresponding optical attenuator;

[0052] The optical attenuator is configured to receive the first filling wave sent by the corresponding light source, attenuate the first filling wave to obtain a second filling wave, and send the second filling wave to the corresponding first optical splitter;

[0053] The first optical splitter is configured to receive the second filling wave sent by the corresponding optical attenuator, split the second filling wave to obtain a third filling wave and a fourth filling wave, send the third filling wave to the corresponding first monitoring unit, and send the fourth filling wave to the corresponding first optical coupler, the optical power of the fourth filling wave being greater than the optical power of the third filling wave;

[0054] The first monitoring unit is configured to receive the third filling wave sent by the corresponding first optical splitter, monitor a first optical power of the third filling wave, and report the first optical power to the control unit;

[0055] The first optical coupler is configured to receive Q fourth filler waves transmitted by the corresponding Q first optical splitters, converge the Q fourth filler waves to obtain a fifth filler wave, and transmit the fifth filler wave to the optical layer unit.

[0056] In the scheme, the optical layer unit comprises M second optical couplers, M second optical splitters, M WSSs, and M second monitoring units, each second optical coupler corresponds to the P first optical couplers, one second optical splitter corresponds to one second optical coupler, each second optical splitter corresponds to the M WSSs, one WSS corresponds to one second monitoring unit; wherein,

[0057] The second optical coupler is configured to receive P fifth filler waves transmitted by the P first optical couplers, converge the P fifth filler waves to obtain a sixth filler wave, and transmit the sixth filler wave to the corresponding second optical splitter;

[0058] The second optical splitter is configured to receive the sixth filler wave transmitted by the corresponding second optical coupler, split the sixth filler wave to obtain M seventh filler waves, and transmit one seventh filler wave to each WSS in the M WSSs;

[0059] The WSS is configured to receive the M seventh filler waves transmitted by the M second optical splitters, perform WDM on the corresponding service wave and the M seventh filler waves to generate a WDM optical signal in one direction;

[0060] The second monitoring unit is configured to monitor a second optical power of each seventh filler wave received by the corresponding WSS, and report the second optical power to the control unit.

[0061] In the scheme, the control unit comprises a first control unit configured to receive N first optical powers transmitted by the N first monitoring units, determine whether the corresponding light source is failed based on each first optical power, and transmit a first control instruction to each optical attenuator except the optical attenuator corresponding to the failed light source in the N optical attenuators in a case where it is determined that the corresponding light source is failed, the first control instruction being used to instruct to reduce the attenuation value of the optical attenuator.

[0062] The optical attenuator is further configured to, in a case where the first control instruction transmitted by the first control unit is received, reduce the attenuation value of the optical attenuator in response to the first control instruction.

[0063] In the scheme, the control unit comprises a second control unit configured to receive M 2 second optical powers transmitted by the M 2a second light power, determining whether there is a failed light source in the N light sources, and in a case where it is determined that there is a failed light source, sending a second control instruction to a WSS corresponding to the failed light source, the second control instruction being used to instruct to reduce the attenuation value of the branch port;

[0064] The WSS is further configured to, in a case where the second control instruction sent by the second control unit is received, reduce the attenuation value of the branch port in response to the second control instruction.

[0065] The present disclosure further provides a control device, comprising a communication interface and a processor, wherein,

[0066] The processor is configured to:

[0067] perform light power adjustment on the filler wave according to a first light power of the filler wave generated by a filler unit of the filler wave management system;

[0068] and / or,

[0069] perform light power adjustment on the WDM optical signal according to a second light power of the WDM optical signal generated by an optical layer unit of the filler wave management system, the WDM optical signal comprising M-direction WDM optical signals generated by the optical layer unit through WDM of service waves and filler waves generated by a filler unit of the filler wave management system, M being an integer greater than or equal to 1; wherein,

[0070] The filler wave is generated by N light sources, N being an integer greater than 1.

[0071] The present disclosure further provides a control device, comprising a processor and a memory for storing a computer program capable of running on the processor,

[0072] The processor is configured to, when the computer program is run, perform the steps of any of the above methods of the control unit side of the filler wave management system.

[0073] The present disclosure further provides a storage medium having a computer program stored thereon, the computer program being executed by a processor to implement the steps of any of the above methods of the control unit side of the filler wave management system.

[0074] The present disclosure further provides a computer program product comprising a computer program, the computer program being executed by a processor to implement the steps of any of the above methods of the control unit side of the filler wave management system.

[0075] The filling wave management method, system, control device, storage medium and computer program product provided by the embodiments of the present disclosure, the method comprises: a control unit of a filling wave management system performs optical power adjustment on a filling wave according to a first optical power of the filling wave generated by a filling unit of the filling wave management system; and / or performs optical power adjustment on a WDM optical signal according to a second optical power of the WDM optical signal generated by an optical layer unit of the filling wave management system, the WDM optical signal comprises M-direction WDM optical signals generated by the optical layer unit by WDM on service waves and filling waves generated by the filling unit of the filling wave management system, and M is an integer greater than or equal to 1; the filling wave is generated by the filling unit using N light sources, and N is an integer greater than 1. The scheme provided by the embodiments of the present disclosure, the control unit performs optical power adjustment on the filling wave according to the first optical power of the filling wave generated by the filling unit, and / or performs optical power adjustment on the WDM optical signal according to the second optical power of the WDM optical signal generated by the optical layer unit, the filling wave is generated by the filling unit using N (N is an integer greater than 1) light sources, and the WDM optical signal comprises M (M is an integer greater than or equal to 1) -direction WDM optical signals generated by the optical layer unit by WDM on service waves and filling waves; in this way, on the one hand, since the filling wave is generated by the filling unit using multiple light sources, the problem of sharp change in the performance of the OTN system caused by failure of a single light source can be avoided, the reliability of the filling wave is improved, that is, high reliability of the filling wave is achieved, so that the performance of the OTN system can be guaranteed; on the other hand, since the control unit can perform optical power adjustment on the filling wave according to the first optical power of the filling wave generated by the filling unit and / or perform optical power adjustment on the WDM optical signal according to the second optical power of the WDM optical signal generated by the optical layer unit, when one or more light sources fail and cause filling wave failure, the control unit can discover the filling wave failure in time through monitoring of the optical power (that is, the first optical power and / or the second optical power), and can solve the failure in time through optical power adjustment, so that rapid recovery of the performance of the OTN system can be achieved, the influence of filling wave failure on the performance of the OTN system is reduced, and the performance of the OTN system can be further guaranteed. In general, the scheme provided by the embodiments of the present disclosure, based on multiple filling wave light sources and linkage between the multiple filling wave light sources, can achieve protection and backup of the filling wave and rapid recovery after filling wave failure, so that in a 400G OTN system, or even in a future 800G and above ultra-wide spectrum OTN system, the performance of the OTN system can be effectively guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0076] FIG. 1 is a schematic diagram of a 400G QPSK C6T+L6T spectrum of a sending end and after 80km transmission;

[0077] FIG. 2 is a schematic diagram of a filling wave scheme of the related art;

[0078] Fig. 3 is a schematic diagram of a structure of a fill wave management system according to an embodiment of the present disclosure;

[0079] Fig. 4 is a schematic diagram of another structure of a fill wave management system according to an embodiment of the present disclosure;

[0080] Fig. 5 is a schematic diagram of a flow of a fill wave management method according to an embodiment of the present disclosure;

[0081] Fig. 6 is a schematic diagram of a flow of another fill wave management method according to an embodiment of the present disclosure;

[0082] Fig. 7 is a schematic diagram of a flow of a third fill wave management method according to an embodiment of the present disclosure;

[0083] Fig. 8 is a schematic diagram of a structure of a fill wave management device according to an embodiment of the present disclosure;

[0084] Fig. 9 is a schematic diagram of a structure of a control device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0085] The present disclosure will be described in further detail below with reference to the accompanying drawings and embodiments.

[0086] In related technologies, compared with the spectrum width of only 4 THz in the 100G era, the 400G spectrum is expanded to 12 THz (corresponding to the C6T+L6T band), which is close to the gain peak of the stimulated Raman scattering (SRS) effect of 13.4 THz. Specifically, Fig. 1 is a schematic diagram of 400G QPSK C6T+L6T spectra at a sending end and after 80 km transmission. As can be seen from the test results shown in Fig. 1, in the case that the power of each wavelength at the sending end is relatively flat, the power difference between each wavelength at the receiving end reaches 7 decibels (dB) after 80 km G.652.D fiber transmission, and a significant SRS effect is generated. In addition, in the actual deployment and application of the 100G OTN system, 100G ports and wavelengths are usually configured according to business needs and protection needs, and other wave channels (i.e., channels) are idle, and the port configuration is flexibly increased when there is a new demand, and multiple wave channels (such as 80 wave channels) are not directly configured. For the 400G OTN system, different SRS effects are generated by configuring different numbers of wave channels and occupying different wavelength positions, which causes the newly added wavelength to affect the power and performance of the already configured wave channels in the OTN system, and brings great challenges to system planning and actual application.

[0087] To solve the above problems, the related technology proposes a filling wave scheme as shown in FIG. 2 to generate a wide spectrum light source (i.e. filling wave) through an Amplified Spontaneous Emission (ASE) noise source, the wavelength range covers 80 channels of the 400G OTN system, and the service wavelength and the filling wave generated by the noise source are combined through a WSS to realize 80 channels of the OTN system. Specifically, after the filling wave generated based on the ASE noise source and the service wavelength are combined through the WSS, the addition and deletion of any service wavelength can be flexibly realized. For example, initially, three service wavelengths are opened, corresponding to the 1st, 2nd and 80th channels respectively, and the filling wave covers the wavelength range of the 80 channels. After the WSS, the filling wave occupies 77 channels other than the 1st, 2nd and 80th channels, and together with the three service channels, it forms 80 channels. If the 8th channel is newly configured as a service wavelength according to the service needs, the WSS can be controlled to make the filling wave occupy 76 channels other than the 1st, 2nd, 8th and 80th channels, and the 8th channel originally occupied by the filling wave is turned off, and the newly configured service wavelength of the 8th channel is combined, and it still maintains 80 channels and realizes the newly added service wavelength.

[0088] However, with the introduction of the filling wave, once the subsystem for realizing the filling wave in the 400G OTN system fails, such as the filling wave light source fails, it will cause the performance of the entire OTN system to change sharply, and even become unusable. Therefore, how to realize high reliability of the filling wave, and how to quickly recover after the filling wave fails become new problems.

[0089] Based on this, in various embodiments of the present disclosure, the control unit adjusts the optical power of the filler wave according to the first optical power of the filler wave generated by the filler wave unit, and / or adjusts the optical power of the WDM optical signal according to the second optical power of the WDM optical signal generated by the optical layer unit, the filler wave is generated by the filler wave unit using N (N is an integer greater than 1) light sources, and the WDM optical signal includes M (M is an integer greater than or equal to 1) directional WDM optical signals generated by the optical layer unit by WDM of service waves and filler waves; in this way, on the one hand, since the filler wave is generated by the filler wave unit using multiple light sources, the problem of sharp change in the performance of the OTN system caused by failure of a single light source can be avoided, the reliability of the filler wave is improved, i.e., high reliability of the filler wave is achieved, so that the performance of the OTN system can be guaranteed; on the other hand, since the control unit can adjust the optical power of the filler wave according to the first optical power of the filler wave generated by the filler wave unit and / or adjust the optical power of the WDM optical signal according to the second optical power of the WDM optical signal generated by the optical layer unit, when one or more light sources fail and cause the filler wave to fail, the control unit can discover the filler wave failure in time through monitoring of the optical power (i.e., the first optical power and / or the second optical power), and can solve the failure in time through optical power adjustment, so that rapid recovery of the performance of the OTN system can be achieved, the impact of the filler wave failure on the performance of the OTN system can be reduced, and thus the performance of the OTN system can be further guaranteed. In general, the scheme provided in the embodiments of the present disclosure can achieve protection and backup of the filler wave based on multiple filler wave light sources and linkage between the multiple filler wave light sources, and can achieve rapid recovery after filler wave failure, so that in a 400G OTN system, or even in a future 800G and above ultra-wide spectrum OTN system, the performance of the OTN system can be effectively guaranteed.

[0090] Specifically, the embodiments of the present disclosure provide a filler wave management system, as shown in FIG. 3, which includes a filler wave unit 301, an optical layer unit 302, and a control unit 303, the filler wave unit 301 includes N light sources, N is an integer greater than 1; wherein,

[0091] The filler wave unit 301 is configured to generate filler waves using the N light sources, monitor the first optical power of the filler waves, and report the first optical power to the control unit 303;

[0092] The optical layer unit 302 is configured to WDM of service waves and the filler waves to generate M directional WDM optical signals, monitor the second optical power of the WDM optical signals, and report the second optical power to the control unit 303, M is an integer greater than or equal to 1;

[0093] The control unit 303 is configured to adjust the optical power of the filling wave according to the first optical power, and / or adjust the optical power of the WDM optical signal according to the second optical power.

[0094] In actual application, the specific values of N and M can be set according to requirements, and M can be equal to or different from N, which is not limited in the embodiments of the present disclosure.

[0095] In actual application, the filling wave management system can be deployed in an OTN system, which can include a 400G OTN system, an 800G OTN system, etc. The OTN system includes a plurality of wave channels (i.e., channels), that is, each of the WDM optical signals in the M directions has a plurality of wave channels, and the specific number of the plurality of wave channels can be set according to requirements, such as 80, 96, 120, etc., which is not limited in the embodiments of the present disclosure. In addition, it can be understood that the OTN system can include a specific service unit, which can send a specific service wave to the optical layer unit 302.

[0096] In an embodiment, the N light sources can form P light source groups, each light source group including Q light sources, and P and Q are both integers greater than 1; the filling wave unit 301 can further include N optical attenuators, N first optical splitters, N first monitoring units, and P first optical couplers, one optical attenuator, one first optical splitter, and one first monitoring unit corresponding to one light source, and one first optical coupler corresponding to one light source group; wherein,

[0097] The light source is configured to send the first filling wave generated by itself to the corresponding optical attenuator;

[0098] The optical attenuator is configured to receive the first filling wave sent by the corresponding light source, attenuate the first filling wave to obtain a second filling wave, and send the second filling wave to the corresponding first optical splitter;

[0099] The first optical splitter is configured to receive the second filling wave sent by the corresponding optical attenuator, split the second filling wave to obtain a third filling wave and a fourth filling wave, send the third filling wave to the corresponding first monitoring unit, and send the fourth filling wave to the corresponding first optical coupler, the optical power of the fourth filling wave being greater than that of the third filling wave;

[0100] The first monitoring unit is configured to receive the third filling wave sent by the corresponding first optical splitter, monitor the first optical power of the third filling wave, and report the first optical power to the control unit 303;

[0101] The first optical coupler is configured to receive Q fourth filler waves transmitted by the corresponding Q first optical splitters, converge the Q fourth filler waves to obtain a fifth filler wave, and transmit the fifth filler wave to the optical layer unit 302.

[0102] Here, it can be understood that N is equal to P multiplied by Q, and by grouping the N light sources, failure of one or more first optical couplers can be avoided, thereby further guaranteeing the performance of the OTN system.

[0103] In actual application, specific values of P and Q can be set as needed, and the attenuation value of the optical attenuator and the splitting ratio (i.e., the branching ratio) of the first optical splitter can also be set as needed, and the embodiments of the present disclosure do not limit this.

[0104] In actual application, one light source corresponds to one optical attenuator, one first optical splitter, and one first monitoring unit, which can also be understood as that the light source, the optical attenuator, the first optical splitter, and the first monitoring unit are one-to-one associated or one-to-one corresponding; one light source group corresponds to one first optical coupler, which can also be understood as that the one light source group is associated with one first optical coupler.

[0105] In actual application, the first filler wave generated by the light source can be wide-spectrum ASE noise. It can be understood that the wavelength range of the first filler wave can cover all service wave channels of the OTN system.

[0106] In an embodiment, the optical layer unit 302 can include M second optical couplers, M second optical splitters, M WSSs, and M second monitoring units, each second optical coupler corresponds to the P first optical couplers, one second optical splitter corresponds to one second optical coupler, each second optical splitter corresponds to the M WSSs, one WSS corresponds to one second monitoring unit; wherein,

[0107] The second optical coupler is configured to receive P fifth filler waves transmitted by the P first optical couplers, converge the P fifth filler waves to obtain a sixth filler wave, and transmit the sixth filler wave to the corresponding second optical splitter;

[0108] The second optical splitter is configured to receive the sixth filler wave transmitted by the corresponding second optical coupler, split the sixth filler wave to obtain M seventh filler waves, and transmit one seventh filler wave to each WSS in the M WSSs;

[0109] The WSS is configured to receive M seventh filler waves transmitted by the M second optical splitters, perform WDM on the corresponding service wave and the M seventh filler waves to generate a directional WDM optical signal.

[0110] The second monitoring unit is configured to monitor a second optical power of each seventh filling wave received by the corresponding WSS, and report the second optical power to the control unit 303.

[0111] In actual application, the splitting ratio (i.e., the branching ratio) of the second optical splitter can be set as needed, and the embodiments of the present disclosure do not limit this. In addition, it can be understood that the number of the second optical couplers, the second optical splitters, the WSSs, and the second monitoring units are equal, each WSS corresponds to a different optical transmission line, i.e., each WSS corresponds to a direction of an optical transmission line, and there are a plurality of channels in the direction of an optical transmission line, such as 80, 96, or 120 channels.

[0112] In actual application, each second optical coupler corresponds to the P first optical couplers, and it can also be understood that each second optical coupler is associated with each first optical coupler in the P first optical couplers; one second optical splitter corresponds to one second optical coupler, and it can also be understood that one second optical splitter is associated with one second optical coupler; each second optical splitter corresponds to the M WSSs, and it can also be understood that each second optical splitter is associated with each WSS in the M WSSs; one WSS corresponds to one second monitoring unit, and it can also be understood that one WSS is associated with one second monitoring unit.

[0113] In an embodiment, the control unit 303 can include a first control unit configured to receive the N first optical powers sent by the N first monitoring units, determine whether the corresponding light source is failed based on each first optical power, and in a case where it is determined that the corresponding light source is failed, send a first control instruction to each optical attenuator except the optical attenuator corresponding to the failed light source, the first control instruction being used to instruct to reduce the attenuation value of the optical attenuator.

[0114] Correspondingly, the optical attenuator is also configured to, in a case where the first control instruction sent by the first control unit is received, reduce the attenuation value of itself in response to the first control instruction.

[0115] In actual application, the specific manner in which the first control unit determines whether the corresponding light source is failed based on each first light power can be set as needed, and the embodiments of the present disclosure do not make any limitation in this regard. Exemplarily, a specific threshold value can be set in advance as needed, when the first light power is lower than the threshold value, the first control unit can determine that the corresponding light source is failed, that is, it can be determined that a fill-in wave failure occurs, and the first control instruction can be sent to each optical attenuator except the optical attenuator corresponding to the failed light source, so as to reduce the attenuation value of each optical attenuator except the optical attenuator corresponding to the failed light source, that is, to improve the light power value of the fill-in wave (i.e., the second fill-in wave) after the optical attenuator of the other optical path (i.e., the optical path corresponding to the non-failed light source), so as to be able to improve the total light power of the fill-in wave (i.e., the M seventh fill-in wave) received by the WSS, compensate for the decrease in fill-in wave light power caused by the failure of the light source, and thus effectively guarantee the performance of the OTN system. In addition, it can be understood that the specific reduction ratio or reduction manner of the attenuation value corresponding to the first control instruction can also be set as needed, and the embodiments of the present disclosure do not make any limitation in this regard.

[0116] In an embodiment, the control unit 303 can include a second control unit configured to receive the M 2 second light powers sent by the M 2 second monitoring units, determine whether there is a failed light source in the N light sources based on the M second light powers, and send a second control instruction to the WSS corresponding to the failed light source in a case where it is determined that there is a failed light source, the second control instruction being configured to instruct to reduce the attenuation value of the branch port.

[0117] Correspondingly, the WSS is further configured to, in a case where the second control instruction sent by the second control unit is received, reduce the attenuation value of the branch port in response to the second control instruction.

[0118] In actual application, the specific manner in which the second control unit determines whether there is a failed light source in the N light sources based on the M 2 second light powers can be set as needed, and the embodiments of the present disclosure do not make any limitation in this regard. Exemplarily, a specific threshold value can be set in advance as needed, when the M 2When one or more of the second optical powers are lower than the threshold value, the second control unit can determine that there is a failed light source in the N light sources, i.e., that a fill-in wave failure occurs, and can determine that the current OTN system has a light source failure problem (i.e., a light source failure condition), and can send the second control instruction to the WSS corresponding to the failed light source (the WSS corresponding to the failed light source can also be understood as the WSS corresponding to the one or more second optical powers lower than the threshold value) to reduce the attenuation value of the WSS branch port injected by the fill-in wave (i.e., the M seventh fill-in wave), i.e., to increase the fill-in wave optical power value in the WSS, so as to compensate for the fill-in wave optical power drop caused by one or more light source failures, thereby effectively guaranteeing the performance of the OTN system. In addition, it can be understood that the specific reduction ratio or reduction mode of the attenuation value corresponding to the second control instruction can also be set as needed, and the second control instruction can correspond to all or part of the branch ports of the WSS, such as the branch ports corresponding to the one or more second optical powers lower than the threshold value, and the embodiments of the present disclosure are not limited in this regard.

[0119] In actual application, the structure of the fill-in wave management system can also be as shown in FIG. 4, which includes two parts of a device level and a control level. The function of the device level is equivalent to the function of the control unit 303, and the function of the control level is equivalent to the functions of the fill-in wave unit 301 and the optical layer unit 302. Specifically, the device level can include N light sources, N optical attenuators, N optical splitters 1 (i.e., the first optical splitters), N optical power monitoring units 1 (i.e., the first monitoring units), and P optical couplers 1 (i.e., the first optical couplers) on the light source side (equivalent to the fill-in wave unit 301); and the device level can further include M optical couplers 2 (i.e., the second optical couplers), M optical splitters 2 (i.e., the second optical splitters), and M WSSs on the WSS side (equivalent to the optical layer unit 302); and the control level can include a fill-in wave board card control unit (i.e., the first control unit) and an optical layer system control unit (i.e., the second control unit).

[0120] Wherein, at the light source side, each light source can generate wide-spectrum ASE noise, i.e. generate a filler wave (i.e. the first filler wave), the wavelength range of the filler wave can cover all service wave channels of the OTN system; each optical attenuator is located at the output end of a corresponding light source, can make the filler wave (i.e. the first filler wave) reduce a certain optical power value, and can also adjust the attenuation value according to the instruction of the filler wave board card control unit (i.e. the first control instruction), thereby adjusting the optical power value of the filler wave (i.e. the second filler wave) after attenuation by the optical attenuator. The optical splitter 1 can divide the filler wave (i.e. the second filler wave) into two paths (i.e. the third filler wave and the fourth filler wave) with different optical power, the path with smaller optical power (i.e. the third filler wave) can be sent to the optical power monitoring unit 1 to monitor the optical power of the filler wave, and the path with larger optical power (i.e. the fourth filler wave) can be sent to the optical coupler 1. The optical power monitoring unit 1 can be used to monitor the optical power of the corresponding filler wave (i.e. the third filler wave), and send the optical power data (i.e. the first optical power) to the filler wave board card control unit. The optical coupler 1 can divide the N light sources into multiple groups (i.e. P groups), each group corresponds to an optical coupler 1, and can converge the filler waves (i.e. the Q fourth filler waves) generated by the multiple light sources in the group together; in this way, the light source grouping method can avoid the failure of a single optical coupler 1 leading to the failure of all filler waves.

[0121] At the WSS side, each optical coupler 2 can be connected to the P optical couplers 1 on the light source side, and can converge the filler waves (i.e. the P fifth filler waves) generated by the corresponding N light sources together. Each optical splitter 2 can be connected to M WSSs respectively, and each WSS can correspond to a line direction (i.e. each WSS can correspond to the direction of an optical transmission line); each optical splitter 2 can send the converged filler waves generated by the N light sources to multiple WSSs (i.e. send a seventh filler wave to each WSS), thereby realizing filler wave protection for multiple line aspects (i.e. multiple line directions). Each WSS can combine and split the filler wave and the service wave. In addition, an optical power monitoring unit 2 can be arranged on the WSS, which is used to monitor the optical power of the branch port and send the optical power data (i.e. the second optical power) to the optical layer system control unit.

[0122] At the control level, the filler wave board card control unit can determine whether the corresponding light source is failed according to the size of the reported optical power information (i.e., the first optical power), and if the corresponding light source is determined to be failed, an instruction (i.e., the first control instruction) can be issued to the optical attenuator other than the light source to adjust (i.e., reduce) the attenuation value of the optical attenuator of other light paths, i.e., to increase the optical power value of the filler wave (i.e., the second filler wave) attenuated by the optical attenuator of other light paths, so as to increase the total optical power of the filler wave (i.e., the M seventh filler wave) received by the WSS, thereby compensating for the decrease in the optical power of the filler wave caused by the failure of the light source. The optical layer system control unit can determine whether there is a problem of light source failure (i.e., the case of light source failure) according to the size of the reported optical power information (i.e., the second optical power), and if it is determined that there is a problem of light source failure, an instruction (i.e., the second control instruction) can be issued to the corresponding WSS to adjust (i.e., reduce) the attenuation value of the WSS branch port to which the filler wave is injected, i.e., to increase the filler wave optical power value in the WSS, thereby compensating for the decrease in the optical power of the filler wave caused by the failure of one or more light sources.

[0123] Specifically, when the filler wave board card control unit implements filler wave fault recovery, each light source can independently generate wide-spectrum ASE noise, i.e., generate a filler wave (i.e., the first filler wave), and the wavelength range of the filler wave can cover all service wave channels of the OTN system. For the filler wave generated by each light source, the following process exists: the filler wave (i.e., the first filler wave) generated by the light source is attenuated by the optical attenuator, thereby reducing a certain optical power value, and then the filler wave (i.e., the second filler wave) is divided into two paths with different optical power values by the subsequent optical splitter 1, wherein the path with smaller optical power (i.e., the third filler wave) is sent to the optical power monitoring unit 1 to monitor the optical power of the filler wave, and the path with larger optical power (i.e., the fourth filler wave) is sent to the optical coupler 1; the optical power monitoring unit 1 receives the filler wave, monitors the optical power of the filler wave, and sends the optical power data (i.e., the first optical power) to the filler wave board card control unit; the filler wave board card control unit determines whether the light source is failed according to the size of the reported optical power information (i.e., the first optical power); if it is determined that the light source is failed, the filler wave board card control unit can issue an instruction (i.e., the first control instruction) to the optical attenuator other than the light source to adjust (i.e., reduce) the attenuation value of the optical attenuator of other light paths, thereby increasing the optical power value of the filler wave (i.e., the second filler wave) attenuated by the optical attenuator of other light paths, so as to increase the total optical power of the filler wave (i.e., the M seventh filler wave) received by the WSS, thereby compensating for the decrease in the optical power of the filler wave caused by the failure of the light source.

[0124] When the optical layer system control unit implements the filler wave fault recovery, each light source can independently generate wide-spectrum ASE noise, that is, generate the filler wave (that is, the first filler wave), and the wavelength range of the filler wave can cover all service wave channels of the OTN system. The filler wave (that is, the first filler wave) generated by the light source is attenuated by the optical attenuator to reduce a certain optical power value, and then the filler wave (that is, the second filler wave) is divided into two paths with different optical powers by the subsequent optical splitter 1, wherein the path with a larger optical power (that is, the fourth filler wave) is sent to the optical coupler 1 on the light source side. Here, the N light sources are divided into multiple groups (that is, P groups), and each group corresponds to an optical coupler 1 on the light source side, which is used to converge the filler waves generated by multiple light sources corresponding to the group. In this way, the grouping method can avoid the failure of a single optical coupler 1 leading to the failure of all filler waves. Each optical coupler 2 on the WSS side is connected to the P optical couplers 1 on the light source side, which is used to converge the filler waves (that is, the P fifth filler waves) generated by the corresponding N light sources, and then the converged filler waves generated by the N light sources are sent to multiple WSSs (that is, one seventh filler wave is sent to each WSS) through the subsequent optical splitter 2, so that the filler wave protection on multiple line aspects (that is, multiple line directions) can be implemented. The WSS branch ports receive the filler wave and the service wave respectively, perform wave combining, monitor the optical power of the branch port through the optical power monitoring unit 2, and send the optical power data (that is, the second optical power) to the optical layer system control unit. The optical layer system control unit can determine whether there is a light source failure problem (that is, the light source failure condition) according to the size of the optical power information (that is, the second optical power) reported by the WSS. If it is determined that there is a light source failure problem, the optical layer system control unit can issue an instruction (that is, the second control instruction) to the corresponding WSS to adjust (that is, reduce) the attenuation value of the filler wave injected into the WSS branch port, that is, to improve the filler wave optical power value in the WSS, so as to compensate for the filler wave optical power drop caused by one or more light source failures.

[0125] In actual application, the above control layer can be implemented by a control device, that is, the filler wave board card control unit and the optical layer system control unit can be arranged on the control device, and the control device can be implemented by a main control board card. The device layer can be implemented by a controlled device, which can include a WSS independent board card and other specific board cards, and M WSSs can be arranged on the WSS independent board card, and other components of the device layer can be arranged on the other specific board cards. The service unit of the OTN system can be implemented by a specific service board card, which can send specific service waves to the WSS independent board card.

[0126] Correspondingly, the disclosure also provides a filler wave management method applied to the filler unit of the filler wave management system, as shown in FIG. 5, which includes the following steps.

[0127] Step 501: generating a filling wave by using N light sources of the filling wave unit, N being an integer greater than 1;

[0128] Step 502: monitoring a first optical power of the filling wave, and reporting the first optical power to a control unit of the filling wave management system, so that the control unit adjusts the optical power of the filling wave according to the first optical power.

[0129] In an embodiment, the N light sources form P light source groups, each light source group including Q light sources, P and Q being integers greater than 1; the filling wave unit further includes N optical attenuators, N first optical splitters, N first monitoring units and P first optical couplers, one optical attenuator, one first optical splitter and one first monitoring unit corresponding to one light source, and one first optical coupler corresponding to one light source group; accordingly, the generating a filling wave by using N light sources of the filling wave unit can include:

[0130] Each of the N light sources sends a first filling wave generated by itself to a corresponding optical attenuator;

[0131] Each of the N optical attenuators receives the first filling wave sent by the corresponding light source, attenuates the first filling wave to obtain a second filling wave, and sends the second filling wave to a corresponding first optical splitter;

[0132] Each of the N first optical splitters receives the second filling wave sent by the corresponding optical attenuator, splits the second filling wave to obtain a third filling wave and a fourth filling wave, sends the third filling wave to a corresponding first monitoring unit, and sends the fourth filling wave to a corresponding first optical coupler, the optical power of the fourth filling wave being greater than that of the third filling wave;

[0133] Each of the P first optical couplers receives Q fourth filling waves sent by corresponding Q first optical splitters, converges the Q fourth filling waves to obtain a fifth filling wave, and sends the fifth filling wave to an optical layer unit of the filling wave management system.

[0134] In an embodiment, the monitoring a first optical power of the filling wave, and reporting the first optical power to a control unit of the filling wave management system can include:

[0135] Each of the N first monitoring units receives the third filling wave sent by the corresponding first optical splitter, monitors a first optical power of the third filling wave, and reports the first optical power to the control unit.

[0136] In an embodiment, the control unit comprises a first control unit; accordingly, the method can further comprise:

[0137] Each of the N optical attenuators, in a case of receiving a first control instruction sent by the first control unit, decreases its own attenuation value in response to the first control instruction; the first control instruction is sent by the first control unit to each of the N optical attenuators except the optical attenuator corresponding to the failed optical source, based on each of the N first optical powers sent by the N first monitoring units, to determine whether the corresponding optical source is failed, and the first control instruction is used to instruct to decrease the attenuation value of the optical attenuator.

[0138] Accordingly, the embodiments of the present disclosure further provide a method for managing a filler wave, applied to an optical layer unit of a filler wave management system, as shown in FIG. 6, the method comprises:

[0139] Step 601: WDM is performed on service waves and filler waves generated by a filler unit of the filler wave management system, to generate M-direction WDM optical signals, M being an integer greater than or equal to 1; the filler waves are generated by the filler unit using N optical sources, N being an integer greater than 1;

[0140] Step 602: monitoring a second optical power of the WDM optical signals, and reporting the second optical power to a control unit of the filler wave management system, so that the control unit adjusts the optical power of the WDM optical signals according to the second optical power.

[0141] In an embodiment, the N optical sources form P optical source groups, each optical source group comprising Q optical sources, P and Q both being integers greater than 1; the optical layer unit comprises M second optical couplers, M second optical splitters, M WSSs and M second monitoring units, each second optical coupler corresponding to the P first optical couplers included in the filler unit, one second optical splitter corresponding to one second optical coupler, each second optical splitter corresponding to the M WSSs, and one WSS corresponding to one second monitoring unit; accordingly, the WDM performed on the service waves and the filler waves generated by the filler unit of the filler wave management system to generate M-direction WDM optical signals can comprise:

[0142] Each of the M second optical couplers receives P fifth filler waves sent by the P first optical couplers, converges the P fifth filler waves to obtain a sixth filler wave, and sends the sixth filler wave to a corresponding second optical splitter;

[0143] Each of the M second optical splitters receives the sixth filler wave sent by the corresponding second optical coupler, splits the sixth filler wave to obtain M seventh filler waves, and sends one seventh filler wave to each of the M WSSs;

[0144] Each of the M WSSs receives the M seventh filler waves sent by the M second optical splitters, performs WDM on the corresponding service wave and the M seventh filler waves, and generates a directional WDM optical signal.

[0145] In an embodiment, the monitoring of the second optical power of the WDM optical signal and the reporting of the second optical power to the control unit of the filler wave management system can include:

[0146] Each of the M second monitoring units monitors the second optical power of each seventh filler wave received by the corresponding WSS and reports the second optical power to the control unit.

[0147] In an embodiment, the control unit includes a second control unit, and correspondingly, the method can further include:

[0148] Each of the M WSSs, upon receiving a second control instruction sent by the second control unit, reduces the attenuation value of the branch port in response to the second control instruction; the second control instruction is sent by the second control unit based on the M second optical powers received from the M second monitoring units. 2 determines that there is a failed optical source, sends a second control instruction to the WSS corresponding to the failed optical source.

[0149] Correspondingly, the embodiments of the present disclosure also provide a filler wave management method applied to a control unit of a filler wave management system, as shown in FIG. 7, the method includes:

[0150] Step 701: receiving a first optical power of a filler wave generated by a filler unit of a filler wave management system and / or a second optical power of a WDM optical signal generated by an optical layer unit; the filler wave is generated by the filler unit using N optical sources, and N is an integer greater than 1; the WDM optical signal includes M directional WDM optical signals generated by the optical layer unit performing WDM on service waves and the filler wave generated by the filler unit of the filler wave management system, and M is an integer greater than or equal to 1;

[0151] Step 702: performing optical power adjustment on the filler wave according to the first optical power, and / or performing optical power adjustment on the WDM optical signal according to the second optical power.

[0152] In an embodiment, the N light sources form P light source groups, each light source group including Q light sources, P and Q are integers greater than 1; the filling wave unit further includes N optical attenuators, N first optical splitters, N first monitoring units and P first optical couplers, one optical attenuator, one first optical splitter and one first monitoring unit correspond to one light source, and one first optical coupler corresponds to one light source group; accordingly, receiving the first optical power can include:

[0153] receiving N first optical powers sent by the N first monitoring units;

[0154] The first optical power of the filling wave generated by the filling wave management system of the filling wave unit can include:

[0155] Based on each first optical power, it is determined whether the corresponding light source is failed, and in the case where it is determined that the corresponding light source is failed, a first control instruction is sent to each optical attenuator in the N optical attenuators except the optical attenuator corresponding to the failed light source, and the first control instruction is used to instruct to reduce the attenuation value of the optical attenuator.

[0156] In an embodiment, the optical layer unit includes M second optical couplers, M second optical splitters, M WSSs and M second monitoring units, each second optical coupler corresponds to the P first optical couplers, one second optical splitter corresponds to one second optical coupler, each second optical splitter corresponds to the M WSSs, and one WSS corresponds to one second monitoring unit; accordingly, receiving the second optical power can include:

[0157] receiving M second optical powers sent by the M second monitoring units; 2

[0158] The second optical power of the WDM optical signal generated by the optical layer unit of the filling wave management system can include:

[0159] Based on the M 2 second optical powers, it is determined whether there is a failed light source in the N light sources, and in the case where it is determined that there is a failed light source, a second control instruction is sent to the WSS corresponding to the failed light source, and the second control instruction is used to instruct to reduce the attenuation value of the branch port.

[0160] ​The filling wave management system and method provided by the embodiments of the present disclosure, the filling wave management system comprises a filling wave unit, an optical layer unit and a control unit, the filling wave unit comprises N light sources, N is an integer greater than 1; wherein, the filling wave unit is used for generating a filling wave by using the N light sources, monitoring a first optical power of the filling wave, and reporting the first optical power to the control unit; the optical layer unit is used for WDM of a service wave and the filling wave, generating M direction WDM optical signals, monitoring a second optical power of the WDM optical signals, and reporting the second optical power to the control unit, M is an integer greater than or equal to 1; the control unit is used for adjusting the optical power of the filling wave according to the first optical power, and / or adjusting the optical power of the WDM optical signals according to the second optical power. The scheme provided by the embodiments of the present disclosure, the control unit adjusts the optical power of the filling wave according to the first optical power of the filling wave generated by the filling wave unit, and / or adjusts the optical power of the WDM optical signals according to the second optical power of the WDM optical signals generated by the optical layer unit, the filling wave is generated by the filling wave unit using N (N is an integer greater than 1) light sources, and the WDM optical signals comprise M (M is an integer greater than or equal to 1) direction WDM optical signals generated by the optical layer unit by WDM of the service wave and the filling wave; in this way, on the one hand, since the filling wave is generated by the filling wave unit using multiple light sources, the problem of sharp change of OTN system performance caused by failure of a single light source can be avoided, the reliability of the filling wave is improved, that is, high reliability of the filling wave is realized, so that the performance of the OTN system can be guaranteed; on the other hand, since the control unit can adjust the optical power of the filling wave according to the first optical power of the filling wave generated by the filling wave unit and / or adjust the optical power of the WDM optical signals according to the second optical power of the WDM optical signals generated by the optical layer unit, when one or more light sources fail and cause filling wave failure, the control unit can discover the filling wave failure in time through monitoring of the optical power (i.e. the first optical power and / or the second optical power), and can solve the failure in time through optical power adjustment, so that rapid recovery of the performance of the OTN system can be realized, the influence of the filling wave failure on the performance of the OTN system is reduced, and the performance of the OTN system can be further guaranteed. In general, the scheme provided by the embodiments of the present disclosure can realize protection and backup of the filling wave based on multiple filling wave light sources and linkage between the multiple filling wave light sources, and can realize rapid recovery after filling wave failure, so that in a 400G OTN system, or even in a future 800G and above ultra-wide spectrum OTN system, the performance of the OTN system can be effectively guaranteed.

[0161] To implement the control unit side method of the filling wave management system according to the embodiments of this disclosure, this disclosure also provides a filling wave management device, disposed on a control device, as shown in FIG8. The device includes: a first control unit 801 and / or a second control unit 802; wherein,

[0162] The first control unit 801 is used to adjust the optical power of the filling wave according to the first optical power of the filling wave generated by the filling wave unit of the filling wave management system; the filling wave is generated by the filling wave unit using N light sources, where N is an integer greater than 1;

[0163] The second control unit 802 is used to adjust the optical power of the WDM optical signal according to the second optical power of the WDM optical signal generated by the optical layer unit of the filling wave management system. The WDM optical signal includes M WDM optical signals generated by the optical layer unit through WDM of the service wave and the filling wave generated by the filling wave unit of the filling wave management system, where M is an integer greater than or equal to 1.

[0164] In one embodiment, the N light sources form P light source groups, each light source group including Q light sources, where P and Q are both integers greater than 1; the filling wave unit further includes: N optical attenuators, N first beam splitters, N first monitoring units, and P first optical couplers, with one light source corresponding to one optical attenuator, one first beam splitter, and one first monitoring unit, and one light source group corresponding to one first optical coupler; correspondingly, the first control unit 801 is specifically used for:

[0165] Receive N first optical powers transmitted by the N first monitoring units;

[0166] Based on each first optical power, it is determined whether the corresponding light source is faulty. If the corresponding light source is determined to be faulty, a first control command is sent to each of the N optical attenuators except for the optical attenuator corresponding to the faulty light source. The first control command is used to instruct the attenuation value of the optical attenuator to be reduced.

[0167] In one embodiment, the optical layer unit includes: M second optical couplers, M second beam splitters, M WSSs, and M second monitoring units. Each second optical coupler corresponds to one of the P first optical couplers, one second beam splitter corresponds to one second optical coupler, each second beam splitter corresponds to one of the M WSSs, and one WSS corresponds to one second monitoring unit. Correspondingly, the second control unit 802 is specifically used for:

[0168] Receive M signals sent by the M second monitoring units 2 The second optical power;

[0169] Based on the M 2a second light power, determining whether there is a failed light source in the N light sources, and in a case where it is determined that there is a failed light source, sending a second control instruction to a WSS corresponding to the failed light source, the second control instruction being used to instruct to reduce the attenuation value of the branch port.

[0170] In actual application, the first control unit 801 and the second control unit 802 can be realized by a processor in the filler wave management device in combination with a communication interface.

[0171] It should be noted that the filler wave management device provided in the above embodiments, when performing filler wave management, only the division of the above program modules is used as an example for illustration, and in actual application, the above processing can be completed by different program modules according to needs, that is, the internal structure of the device is divided into different program modules to complete all or part of the above-described processing. In addition, the filler wave management device and the filler wave management method provided in the above embodiments belong to the same concept, and the specific implementation process is detailed in the method embodiments, which will not be repeated here.

[0172] Based on the hardware implementation of the above program modules, and in order to realize the control unit side method of the filler wave management system of the embodiments of the present disclosure, the embodiments of the present disclosure further provide a control device arranged in the filler wave management system, as shown in FIG. 9, the control device 900 includes:

[0173] a communication interface 901 capable of information interaction with other devices (which can also be understood as other components, parts or units in the filler wave management system, such as a filler unit, an optical layer unit, etc.) in the filler wave management system;

[0174] a processor 902 connected with the communication interface 901 to realize information interaction with other devices in the filler wave management system, for running a computer program, and executing the steps of any method of the control unit side of the filler wave management system described above;

[0175] a memory 903 storing a computer program capable of running on the processor 902.

[0176] Specifically, the processor 902 is configured to:

[0177] adjust the light power of the filler wave according to the first light power of the filler wave generated by the filler unit of the filler wave management system;

[0178] and / or,

[0179] Based on the second optical power of the WDM optical signal generated by the optical layer unit of the filled wave management system, the optical power of the WDM optical signal is adjusted. The WDM optical signal includes M WDM optical signals generated by the optical layer unit through WDM processing of the service wave and the filled wave generated by the filled wave unit of the filled wave management system, where M is an integer greater than or equal to 1; wherein...

[0180] The filling wave is generated by the filling wave unit using N light sources, where N is an integer greater than 1.

[0181] In one embodiment, the N light sources form P light source groups, each light source group including Q light sources, where P and Q are both integers greater than 1; the filling wave unit further includes: N optical attenuators, N first beam splitters, N first monitoring units, and P first optical couplers, with one light source corresponding to one optical attenuator, one first beam splitter, and one first monitoring unit, and one light source group corresponding to one first optical coupler; correspondingly, the processor 902 is further configured to:

[0182] The communication interface 901 receives N first optical powers transmitted by the N first monitoring units.

[0183] Based on each first optical power, it is determined whether the corresponding light source is faulty. If the corresponding light source is determined to be faulty, a first control command is sent through the communication interface 901 to each of the N optical attenuators except for the optical attenuator corresponding to the faulty light source. The first control command is used to instruct the attenuation value of the optical attenuator to be reduced.

[0184] In one embodiment, the optical layer unit includes: M second optical couplers, M second beam splitters, M WSSs, and M second monitoring units. Each second optical coupler corresponds to one of the P first optical couplers, one second beam splitter corresponds to one second optical coupler, each second beam splitter corresponds to one of the M WSSs, and one WSS corresponds to one second monitoring unit. Correspondingly, the processor 902 is further configured to:

[0185] The communication interface 901 receives the M signals sent by the M second monitoring units. 2 The second optical power;

[0186] Based on the M 2 The second optical power is used to determine whether there is a failed light source among the N light sources. If a failed light source is determined, a second control command is sent to the WSS corresponding to the failed light source through the communication interface 901. The second control command is used to instruct the attenuation value of the branch port to be reduced.

[0187] It should be noted that the specific processing procedure of the processor 902 can be understood with reference to the above-mentioned control unit side method of the fill wave management system, and will not be described here.

[0188] Of course, in actual applications, various components in the control device 900 are coupled together through the bus system 904. It can be understood that the bus system 904 is used to realize the connection and communication between the components. The bus system 904 includes not only a data bus, but also a power bus, a control bus and a status signal bus. However, for the purpose of clear illustration, various buses are marked as the bus system 904 in FIG. 9.

[0189] The memory 903 in the embodiment of the present disclosure is used to store various types of data to support the operation of the control device 900. Examples of these data include any computer programs used for operation on the control device 900.

[0190] The control unit side method of the fill wave management system disclosed in the above-mentioned embodiments of the present disclosure can be applied to the processor 902 or implemented by the processor 902. The processor 902 can be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above-mentioned method can be completed by the integrated logic circuit of hardware in the processor 902 or the instructions in the form of software. The above-mentioned processor 902 can be a general purpose processor, a digital signal processor (DSP), or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc. The processor 902 can implement or execute any of the control unit side methods, steps and logic block diagrams disclosed in the embodiments of the present disclosure. The general purpose processor can be a microprocessor or any conventional processor, etc. In combination with the steps of the control unit side method disclosed in the embodiments of the present disclosure, the above-mentioned steps can be directly embodied as hardware decoding processor for execution, or executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium, which is located in the memory 903, and the processor 902 reads the information in the memory 903 and combines the hardware to complete the above-mentioned steps of any control unit side method.

[0191] In an exemplary embodiment, the control device 900 can be implemented by one or more Application Specific Integrated Circuit (ASIC), DSP, Programmable Logic Device (PLD), Complex Programmable Logic Device (CPLD), Field-Programmable Gate Array (FPGA), general-purpose processor, controller, Micro Controller Unit (MCU), microprocessor, or other electronic elements for performing the aforementioned control unit-side method.

[0192] It can be understood that the memory 903 of the embodiments of the present disclosure can be a volatile memory or a non-volatile memory, and can also include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (Read Only Memory, ROM), a programmable read-only memory (Programmable Read-Only Memory, PROM), an erasable programmable read-only memory (Erasable Programmable Read-Only Memory, EPROM), an electrically erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, EEPROM), a ferromagnetic random access memory (ferromagnetic random access memory, FRAM), a flash memory (Flash Memory), a magnetic surface memory, an optical disc, or a compact disc read-only memory (Compact Disc Read-Only Memory, CD-ROM); the magnetic surface memory can be a disk memory or a tape memory. The volatile memory can be a random access memory (Random Access Memory, RAM) used as an external cache. By way of example but not limitation, many forms of RAM are available, such as static random access memory (Static Random Access Memory, SRAM), synchronous static random access memory (Synchronous Static Random Access Memory, SSRAM), dynamic random access memory (Dynamic Random Access Memory, DRAM), synchronous dynamic random access memory (Synchronous Dynamic Random Access Memory, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate Synchronous Dynamic Random Access Memory, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced Synchronous Dynamic Random Access Memory, ESDRAM), synchronous link dynamic random access memory (SyncLink Dynamic Random Access Memory, SLDRAM), direct memory bus random access memory (Direct Rambus Random Access Memory, DRRAM).The memory described in the embodiments of the present disclosure is intended to include, but not limited to, these and any other suitable types of memory.

[0193] In the example embodiments, the embodiments of the present disclosure also provide a storage medium, specifically a computer readable storage medium, such as the memory 903 storing a computer program executable by the processor 902 of the control device 900 to complete the steps of any method described above on the control unit side of the filling wave management system. The computer readable storage medium can be FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disc, or CD-ROM, etc.

[0194] In the example embodiments, the embodiments of the present disclosure also provide a computer program product including a computer program executable by the processor 902 of the control device 900 to complete the steps of any method described above on the control unit side of the filling wave management system.

[0195] It should be noted that "first", "second", etc. are used to distinguish similar objects, and do not necessarily describe a specific order or sequence.

[0196] In addition, the technical solutions described in the embodiments of the present disclosure can be combined arbitrarily without conflict.

[0197] The above is only a preferred embodiment of the present disclosure, and is not intended to limit the protection scope of the present disclosure.

Claims

1. A method for managing a filler wave, applied to a control unit of a filler wave management system, the method comprising: adjusting an optical power of a filler wave generated by a filler unit of the filler wave management system; and / or adjusting an optical power of a wavelength division multiplexing (WDM) optical signal generated by an optical layer unit of the filler wave management system, the WDM optical signal comprising M-directional WDM optical signals generated by the optical layer unit by WDM of service waves and the filler wave generated by a filler unit of the filler wave management system, M being an integer greater than or equal to 1; wherein the filler wave is generated by N light sources of the filler unit, N being an integer greater than 1. The N light sources form P light source groups, each light source group comprising Q light sources, P and Q being integers greater than 1; the filler unit further comprises N optical attenuators, N first optical splitters, N first monitoring units and P first optical couplers, one light source corresponding to one optical attenuator, one first optical splitter and one first monitoring unit, and one light source group corresponding to one first optical coupler. The adjusting of the optical power of the filler wave comprises: receiving N first optical powers sent by the N first monitoring units; determining whether the corresponding light source is failed based on each first optical power, and sending a first control instruction to each optical attenuator except the optical attenuator corresponding to the failed light source in the N optical attenuators if it is determined that the corresponding light source is failed, the first control instruction being used to instruct to reduce the attenuation value of the optical attenuator. The optical layer unit comprises M second optical couplers, M second optical splitters, M wavelength selective switches (WSSs) and M second monitoring units, each second optical coupler corresponding to the P first optical couplers comprised by the filler unit, one second optical splitter corresponding to one second optical coupler, each second optical splitter corresponding to the M WSSs, and one WSS corresponding to one second monitoring unit. The adjusting of the optical power of the WDM optical signal generated by the optical layer unit of the filler wave management system comprises: receiving M second optical powers sent by the M second monitoring units; determining whether the corresponding WSS is failed based on each second optical power, and sending a second control instruction to each WSS except the WSS corresponding to the failed WSS in the M WSSs if it is determined that the corresponding WSS is failed, the second control instruction being used to instruct to reduce the attenuation value of the WSS.

2. The method of claim 1, wherein, 4.A method for managing a filler wave, applied to a filler unit of a filler wave management system, the method comprising: generating a filler wave by N light sources of the filler unit, N being an integer greater than 1; and monitoring a first optical power of the filler wave and reporting the first optical power to a control unit of the filler wave management system, so that the control unit adjusts an optical power of the filler wave based on the first optical power. The N light sources form P light source groups, each light source group comprising Q light sources, P and Q being integers greater than 1; the filler unit further comprises N optical attenuators, N first optical splitters, N first monitoring units and P first optical couplers, one light source corresponding to one optical attenuator, one first optical splitter and one first monitoring unit, and one light source group corresponding to one first optical coupler. ​ ​ 3. The method of claim 1, wherein, ​ ​ receive M 2 second optical powers transmitted by the M second monitoring units Based on the M 2 second optical powers, determine whether there is a failed light source in the N light sources, and in a case where it is determined that there is a failed light source, send a second control instruction to a WSS corresponding to the failed light source, the second control instruction being used to instruct to reduce an attenuation value of a branch port. ​ ​ ​ 5. The method of claim 4, wherein, ​ The N light sources of the filling wave unit generate filling waves, including: Each of the N light sources sends the first filling wave generated by itself to a corresponding optical attenuator; Each of the N optical attenuators receives the first filling wave sent by the corresponding light source, attenuates the first filling wave to obtain a second filling wave, and sends the second filling wave to a corresponding first optical splitter; Each of the N first optical splitters receives the second filling wave sent by the corresponding optical attenuator, splits the second filling wave to obtain a third filling wave and a fourth filling wave, sends the third filling wave to a corresponding first monitoring unit, and sends the fourth filling wave to a corresponding first optical coupler, wherein the optical power of the fourth filling wave is greater than that of the third filling wave; Each of the P first optical couplers receives Q fourth filling waves sent by a corresponding Q first optical splitter, converges the Q fourth filling waves to obtain a fifth filling wave, and sends the fifth filling wave to an optical layer unit of the filling wave management system.

6. The method of claim 5, wherein, The first optical power of the filling wave is monitored, and the first optical power is reported to a control unit of the filling wave management system, including: Each of the N first monitoring units receives the third filling wave sent by the corresponding first optical splitter, monitors the first optical power of the third filling wave, and reports the first optical power to the control unit.

7. The method of claim 5, wherein, The control unit includes a first control unit; the method further includes: Each of the N optical attenuators, in the case of receiving a first control instruction sent by the first control unit, reduces the attenuation value in response to the first control instruction; the first control instruction is sent by the first control unit based on each of the N first optical powers sent by the N first monitoring units, to determine whether the corresponding light source is invalid, and in the case of determining that the corresponding light source is invalid, the first control instruction is used to instruct to reduce the attenuation value of the optical attenuator.

8. A filling wave management method applied to an optical layer unit of a filling wave management system, the method comprising: WDM of a service wave and a filling wave generated by a filling wave unit of the filling wave management system to generate M direction WDM optical signals, M being an integer greater than or equal to 1; the filling wave is generated by the filling wave unit using N light sources, N being an integer greater than 1; Monitoring the second optical power of the WDM optical signal and reporting the second optical power to a control unit of the filling wave management system for the control unit to adjust the optical power of the WDM optical signal according to the second optical power.

9. The method of claim 8, wherein, The N light sources form P light source groups, each light source group including Q light sources, P and Q are both integers greater than 1; the optical layer unit includes M second optical couplers, M second optical splitters, M WSSs and M second monitoring units, each second optical coupler corresponds to the P first optical couplers included by the filler unit, one second optical splitter corresponds to one second optical coupler, each second optical splitter corresponds to the M WSSs, and one WSS corresponds to one second monitoring unit; The WDM of the service wave and the filler wave generated by the filler unit of the filler wave management system generates M-direction WDM optical signals, including: Each second optical coupler in the M second optical couplers receives the P fifth filler waves sent by the P first optical couplers, converges the P fifth filler waves to obtain a sixth filler wave, and sends the sixth filler wave to the corresponding second optical splitter; Each second optical splitter in the M second optical splitters receives the sixth filler wave sent by the corresponding second optical coupler, divides the sixth filler wave to obtain M seventh filler waves, and sends one seventh filler wave to each WSS in the M WSSs; Each WSS in the M WSSs receives the M seventh filler waves sent by the M second optical splitters, WDMs the corresponding service wave and the M seventh filler waves to generate a direction WDM optical signal.

10. The method of claim 9, wherein, The second optical power of the WDM optical signal is monitored, and the second optical power is reported to the control unit of the filler wave management system, including: Each second monitoring unit in the M second monitoring units monitors the second optical power of each seventh filler wave received by the corresponding WSS, and reports the second optical power to the control unit.

11. The method of claim 9, wherein, The control unit includes a second control unit; the method further includes: Each of the M WSSs, in a case of receiving a second control instruction sent by the second control unit, decreases an attenuation value of a branch port in response to the second control instruction; the second control instruction is sent by the second control unit based on M 2 second optical powers received by the second control unit, judges whether there is a failed light source in the N light sources, and in a case of determining that there is a failed light source, sends a second control instruction to a WSS corresponding to the failed light source.

12. A fill wave management system comprising: The filler unit, the optical layer unit and the control unit, the filler unit includes N light sources, N is an integer greater than 1; wherein, The filler unit is configured to generate filler waves using the N light sources, monitor the first optical power of the filler waves, and report the first optical power to the control unit; The optical layer unit is configured to WDM the service wave and the filler wave to generate M-direction WDM optical signals, monitor the second optical power of the WDM optical signals, and report the second optical power to the control unit, M is an integer greater than or equal to 1; The control unit is configured to adjust the optical power of the filler wave according to the first optical power, and / or adjust the optical power of the WDM optical signal according to the second optical power.

13. The fill wave management system of claim 12, wherein, The N light sources form P light source groups, each light source group including Q light sources, P and Q are both integers greater than 1; the filler unit further includes N optical attenuators, N first optical splitters, N first monitoring units and P first optical couplers, one light source corresponds to one optical attenuator, one first optical splitter and one first monitoring unit, and one light source group corresponds to one first optical coupler; wherein, The light source is configured to send a first fill-in wave generated by itself to a corresponding light attenuator. The light attenuator is configured to receive the first fill-in wave sent by the corresponding light source, attenuate the first fill-in wave to obtain a second fill-in wave, and send the second fill-in wave to a corresponding first optical splitter. The first optical splitter is configured to receive the second fill-in wave sent by the corresponding light attenuator, split the second fill-in wave to obtain a third fill-in wave and a fourth fill-in wave, send the third fill-in wave to a corresponding first monitoring unit, and send the fourth fill-in wave to a corresponding first optical coupler, the optical power of the fourth fill-in wave being greater than the optical power of the third fill-in wave. The first monitoring unit is configured to receive the third fill-in wave sent by the corresponding first optical splitter, monitor a first optical power of the third fill-in wave, and report the first optical power to the control unit. The first optical coupler is configured to receive Q fourth fill-in waves sent by Q first optical splitters, converge the Q fourth fill-in waves to obtain a fifth fill-in wave, and send the fifth fill-in wave to the optical layer unit.

14. The fill wave management system of claim 13, wherein, The optical layer unit comprises M second optical couplers, M second optical splitters, M WSSs, and M second monitoring units, each second optical coupler corresponding to the P first optical couplers, one second optical splitter corresponding to one second optical coupler, each second optical splitter corresponding to the M WSSs, and one WSS corresponding to one second monitoring unit. The second optical coupler is configured to receive P fifth fill-in waves sent by the P first optical couplers, converge the P fifth fill-in waves to obtain a sixth fill-in wave, and send the sixth fill-in wave to a corresponding second optical splitter. The second optical splitter is configured to receive the sixth fill-in wave sent by the corresponding second optical coupler, split the sixth fill-in wave to obtain M seventh fill-in waves, and send one seventh fill-in wave to each WSS in the M WSSs. The WSS is configured to receive M seventh fill-in waves sent by the M second optical splitters, perform WDM on a corresponding service wave and the M seventh fill-in waves to generate a WDM optical signal in one direction. The second monitoring unit is configured to monitor a second optical power of each seventh fill-in wave received by the corresponding WSS, and report the second optical power to the control unit.

15. The fill wave management system of claim 13, wherein, The control unit comprises a first control unit configured to receive N first optical powers sent by the N first monitoring units, determine whether a corresponding light source is failed based on each first optical power, and send a first control instruction to each light attenuator except a light attenuator corresponding to the failed light source in the N light attenuators in a case where it is determined that the corresponding light source is failed, the first control instruction being used to instruct to reduce an attenuation value of the light attenuator. The light attenuator is further configured to reduce the attenuation value of the light attenuator in response to the first control instruction in a case where the first control instruction sent by the first control unit is received.

16. The fill wave management system of claim 14, wherein, The control unit comprises a second control unit configured to receive M 2 second optical powers transmitted by the M 2 second monitoring units, determine whether there is a failed light source among the N light sources based on the M 2 second optical powers, and in a case where it is determined that there is a failed light source, send a second control instruction to a WSS corresponding to the failed light source, the second control instruction being configured to instruct to reduce an attenuation value of a branch port. The WSS is further configured to, in a case that a second control instruction sent by the second control unit is received, decrease the attenuation value of the branch port in response to the second control instruction.

17. A control device comprising: The communication interface and the processor; wherein The processor is configured to: adjust the first optical power of the filler wave generated by the filler unit of the filler wave management system; and / or, adjust the second optical power of the WDM optical signal generated by the optical layer unit of the filler wave management system, the WDM optical signal comprising M-direction WDM optical signals generated by the optical layer unit by WDM of service waves and filler waves generated by the filler unit of the filler wave management system, M being an integer greater than or equal to 1; wherein The filler wave is generated by the filler unit using N light sources, N being an integer greater than 1.

18. A control device comprising: a processor and a memory for storing a computer program capable of running on the processor, wherein the processor is configured to execute the steps of the method of any one of claims 1 to 3 when running the computer program.

19. A storage medium having stored thereon a computer program, the computer program being executed by a processor to implement the steps of the method of any one of claims 1 to 3.

20. A computer program product comprising a computer program, the computer program being executed by a processor to implement the steps of the method of any one of claims 1 to 3.

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