CN112217568A - Optical signal processing device and communication system - Google Patents
Optical signal processing device and communication system Download PDFInfo
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- CN112217568A CN112217568A CN202010990227.0A CN202010990227A CN112217568A CN 112217568 A CN112217568 A CN 112217568A CN 202010990227 A CN202010990227 A CN 202010990227A CN 112217568 A CN112217568 A CN 112217568A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/29—Repeaters
- H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
- H04B10/293—Signal power control
- H04B10/2931—Signal power control using AGC
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
- H04B10/07955—Monitoring or measuring power
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
- H04B10/66—Non-coherent receivers, e.g. using direct detection
- H04B10/69—Electrical arrangements in the receiver
- H04B10/693—Arrangements for optimizing the preamplifier in the receiver
- H04B10/6931—Automatic gain control of the preamplifier
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Abstract
The application discloses optical signal processing apparatus, the apparatus includes: the device comprises a separation module, a first processing module, a second processing module and a synthesis module; the separation module is configured to separate an input signal of the optical signal processing apparatus to obtain a service signal, a first optical supervisory channel OSC signal, and a second OSC signal; the first processing module is configured to perform power adjustment on the first OSC signal and the second OSC signal respectively to obtain a first power amplification signal and a second power amplification signal; the second processing module is configured to perform power adjustment on the service signal to obtain a third power amplification signal; the synthesis module is configured to synthesize the first power amplified signal, the second power amplified signal, and the third power amplified signal to obtain an output signal of the optical signal processing apparatus. The application also discloses a communication system.
Description
Technical Field
The present application relates to the field of optical communications technologies, and in particular, to an optical signal processing apparatus and a communication system.
Background
To reduce the cost of optical network construction, operators gradually start to perform decoupling operations of optical-layer devices and electrical-layer devices in the optical network. When the Optical layer device is decoupled from the electrical layer device, two Optical Supervisory Channel (OSC) signals are required because the transmission status of the Optical and electrical signals and the transmission network need to be monitored simultaneously. However, the two different OSC signals have different wavelengths, and the wavelength of the OSC signal is not in the amplification band of an Erbium-doped Fiber amplifier (EDFA), and the conventional EDFA apparatus does not have the capability of processing the two OSC signals.
Disclosure of Invention
The application provides an optical signal processing apparatus and a communication system.
The optical signal processing device provided by the application can acquire two paths of OSC signals from a received signal, respectively detect and amplify the two paths of OSC signals, and synthesize the detection and amplification result and a service signal, so that a foundation is laid for stable and efficient transmission of signals in optical layer equipment and electrical layer equipment in an optical network through the two paths of OSC signals.
The technical scheme provided by the application is realized as follows:
an optical signal processing apparatus, the apparatus comprising: the device comprises a separation module, a first processing module, a second processing module and a synthesis module; wherein:
the separation module is configured to separate an input signal of the optical signal processing apparatus to obtain a service signal, a first optical supervisory channel OSC signal, and a second OSC signal;
the first processing module is configured to perform power adjustment on the first OSC signal and the second OSC signal respectively to obtain a first power amplification signal and a second power amplification signal;
the second processing module is configured to perform power adjustment on the service signal to obtain a third power amplification signal;
the synthesis module is configured to synthesize the first power amplified signal, the second power amplified signal, and the third power amplified signal to obtain an output signal of the optical signal processing apparatus.
In some embodiments, the separation module comprises a first separation unit and a second separation unit; wherein:
the first separation unit is configured to separate the traffic signal and the non-traffic signal from the input signal;
the second separation unit is configured to separate the first OSC signal and the second OSC signal from the non-traffic signal.
In some embodiments, the first processing module comprises a coupling unit; wherein:
the coupling unit is configured to separate a first signal to be detected and a first signal to be processed from the first OSC signal, and separate a second signal to be detected and a second signal to be processed from the second OSC signal; wherein the first signal to be detected is used to determine the power of the first OSC signal; the second signal to be detected is used for determining the power of the second OSC signal; the first signal to be processed and the second signal to be processed represent signals which need to be power-adjusted.
In some embodiments, the first processing module further comprises a power detection unit; wherein:
the power detection unit is used for respectively detecting the first signal to be detected and the second signal to be detected to obtain a first power and a second power; wherein the first power represents a power of the first OSC signal; the second power represents a power of the second OSC signal.
In some embodiments, the first processing module further includes a power control unit and a power amplifier unit; wherein:
the power control unit is configured to control a working state of the power amplifier unit according to the first power and the second power;
and the power amplifier unit is used for respectively adjusting the power of the first signal to be processed and the power of the second signal to be processed based on the control of the power control unit.
In some embodiments, the power amplifying unit includes a power attenuating unit and a power amplifying unit; wherein:
the power attenuation unit is used for respectively performing power attenuation processing on the first signal to be processed and the second signal to be processed to obtain a first power attenuation signal and a second power attenuation signal;
the power amplifying unit is configured to perform power adjustment processing on the first power attenuation signal and the second power signal data, respectively, to obtain the first power amplification signal and the second power amplification signal.
In some embodiments, the coupling unit is configured to separate the first signal to be detected and the first signal to be processed from the first OSC signal based on first data; the coupling unit is further configured to separate the second signal to be detected and the second signal to be processed from the second OSC signal based on second data; wherein the first data represents a ratio of the first signal to be detected to the first signal to be processed; the second data represents a ratio of the second signal to be detected to the second signal to be processed.
In some embodiments, the first data is less than 1; the second data is less than 1.
In some embodiments, the synthesis module comprises a first synthesis unit and a second synthesis unit; wherein:
the first combining unit is configured to combine the first power amplified signal and the second power amplified signal to obtain a first combined signal;
the second synthesis unit is configured to synthesize the first synthesis signal and the third power amplification signal to obtain the output signal.
The present application further provides a communication system comprising at least one optical signal processing device as described in any of the previous claims.
Therefore, after receiving an input signal, the optical signal processing apparatus provided in the embodiment of the present application can perform power processing on two paths of OSC signals carried in the input signal, and synthesize two paths of power signals corresponding to a processing result and a service signal, and under a condition that the service signal includes an optical layer device signal and an electrical layer device signal, the optical signal processing apparatus provided in the embodiment of the present application can implement management of the optical layer device and the electrical layer device through the two-channel OSC signal, and can also implement monitoring of the optical layer device signal and the electrical layer device signal, thereby laying a foundation for stable and efficient transmission of signals in the optical layer device and the electrical layer device in an optical network.
Drawings
Fig. 1 is a schematic structural diagram of a first optical signal processing apparatus provided in the present application;
fig. 2 is a schematic structural diagram of a second optical signal processing apparatus provided in the present application;
fig. 3 is a schematic structural diagram of a third optical signal processing apparatus provided in the present application;
fig. 4 is a schematic structural diagram of a third optical signal processing apparatus provided in the present application;
fig. 5 is a schematic structural diagram of an optical signal processing apparatus provided in the present application;
fig. 6 is a schematic structural diagram of a communication system including at least one optical signal processing apparatus according to the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The present application relates to the field of optical communications technologies, and in particular, to an optical signal processing apparatus and a communication system.
In a conventional non-open optical network architecture, electrical layer devices and optical layer devices are deeply coupled, and these devices are often provided only by the same device manufacturer, and in this case, only one OSC signal is needed to meet the requirement of optical network operation and maintenance.
However, as the bandwidth and transmission rate of optical transmission networks are continuously increased, the investment in optical network construction is increased. To reduce the cost, operators want to open the network architecture of the optical network to achieve the decoupling of optical layer devices and electrical layer devices, so that more device manufacturers can participate in the optical network construction.
However, after the optical layer device and the electrical layer device are decoupled, the optical layer device and the electrical layer device need to be managed and maintained through two OSC signals. Due to the reasons of protocol compatibility, monitoring requirement difference, reliability and the like, the optical layer device and the electrical layer device cannot use the same OSC signal to simultaneously manage and maintain the two devices and signals transmitted therein.
Therefore, a scheme that two paths of OSC signals are used to implement management and maintenance of an optical layer device and an electrical layer device respectively is proposed in the related art, that is, the optical layer device uses a conventional OSC signal with a wavelength of 1510nm, the electrical layer device uses an OSC signal with a wavelength of 1490nm, and the two signals with different wavelengths can be decoupled in the same transmission line.
After introducing the dual channel OSC signal into the optical network, the signals transmitted in the transmission line of the optical network are multiplexed into three signals: namely OSC signals with wavelengths of 1490nm and 1510nm, respectively, and traffic signals with a wavelength of 1550 nm. In Optical relay, before a multiplexed signal (i.e., a signal including two OSC signals and a service signal) enters an EDFA, two OSC signals need to be obtained from a mixed Optical signal, Optical-Electrical-Optical (OEO) relay amplification is performed, then the service signal is also relay-amplified, and after the service signal is amplified, the amplified service signal and the amplified two OSC signals are combined and transmitted continuously.
However, the wavelengths of the two OSC signals are not within the band range amplified by the EDFA, and the conventional EDFA apparatus does not have the capability of processing the two OSC signals, and an additional wavelength multiplexing/demultiplexing apparatus and an OSC signal processing apparatus are added to the existing optical network, which increases the difficulty of network upgrade and increases the cost of optical network construction.
Based on this, the related art proposes an EDFA apparatus with a Raman Fiber Amplifier (RFA) with automatic gain control, which includes an EDFA module, an OSC power monitoring unit, and an RFA module, etc. However, this scheme only considers a single wavelength OSC signal and does not implement processing of two OSC signals.
In the related art, an EDFA apparatus with an OSC amplification function for an optical line protection system is also proposed, and the apparatus includes an EDFA module, an OSC power detection unit, an optical switch, and two OEO repeaters. However, this solution can only amplify a single OSC signal, and cannot process the two OSC signals simultaneously; also, the method of identifying the wavelength of the OSC by only depending on the magnitude of the optical power detection value cannot satisfy the actual analysis requirement and is technically difficult to implement, so that the apparatus cannot automatically identify the operating wavelength of the OSC signal and needs to manually perform wavelength switching.
Based on this, an embodiment of the present application provides an optical signal processing apparatus, where an EDFA located at an optical relay site is redesigned, so that an automatic demultiplexing/multiplexing function of two OSC signals, an independent power detection function of two OSC signals, and a power amplification function are integrated inside the EDFA, and a relay optical transmission system is simplified under the condition that the number of devices at the optical relay site is not changed.
Fig. 1 is a schematic structural diagram of a first optical signal processing apparatus 1 according to an embodiment of the present disclosure.
The optical signal processing apparatus 1 provided in the embodiment of the present application includes a separation module 101, a first processing module 102, a second processing module 103, and a synthesis module 104. Wherein:
the splitting module 101 is configured to split an input signal of the optical signal processing apparatus 1 to obtain a service signal, a first OSC signal, and a second OSC signal.
The first processing module 102 is configured to perform power adjustment on the first OSC signal and the second OSC signal respectively to obtain a first power amplification signal and a second power amplification signal.
The second processing module 103 is configured to perform power adjustment on the service signal to obtain a third power amplified signal.
And the combining module 104 is configured to perform combining processing on the first power amplified signal, the second power amplified signal, and the third power amplified signal to obtain an output signal of the optical signal processing apparatus.
In one embodiment, the input signal of the optical signal processing apparatus may be at least one of: and the single service signal, at least one service signal and at least one path of multiplexing signal of the OSC signal. Illustratively, the input signal may be a first traffic signal transmitted in the optical layer device, a second traffic signal transmitted in the electrical layer device, a first OSC signal for managing the optical layer device and the first traffic signal, and a second OSC signal for managing the electrical layer device and the second traffic signal.
In one embodiment, the separation module 101 may be a module capable of detecting an input signal and separating the input signal according to a detection result.
In one embodiment, the separation process may be used to represent a demultiplexing process on the input signal.
In one embodiment, the traffic signal may include a traffic signal transmitted in at least one type of device. Illustratively, the traffic signal may represent a multiplexed signal of a first traffic signal and a second traffic signal; the service signal may also be a first service signal or a second service signal.
In one embodiment, the power adjustment includes power adjustment of at least one of the first OSC signal and the second OSC signal.
In one embodiment, the power adjustment includes keeping the power of one of the first and second OSC signals unchanged, and adjusting the other OSC signal.
In one embodiment, the power adjustment may include performing power attenuation and/or power amplification on both the first OSC signal and the second OSC signal.
In an embodiment, the first processing module 102 may be configured to detect the first OSC signal and the second OSC signal respectively, and perform power processing on the first OSC signal and the second OSC signal according to the detection result.
In one embodiment, the first and second power amplified signals are used to represent signals after power adjustment corresponding to the first and second OSC signals, respectively.
In one embodiment, the second processing module 103 may be an EDFA module.
In one embodiment, the power adjustment of the traffic signal may include performing power detection on the traffic signal and performing power amplification or power attenuation operation according to the detection result.
In one embodiment, the third power amplified signal is indicative of a power adjusted signal corresponding to the traffic signal.
In one embodiment, the synthesizing module 104 may be a module corresponding to the function of the separating module 101. For example, in the case that the separation module 101 is a wave splitter, the synthesis module 104 may be a wave combiner.
In an embodiment, the first power amplified signal, the second power amplified signal, and the third power amplified signal are synthesized, and at least two of the three signals may be subjected to wavelength division multiplexing according to actual needs.
In one embodiment, the output signal of the optical signal processing apparatus 1 may be a wavelength division multiplexing signal including at least two of the first power amplified signal, the second power amplified signal, and the third power amplified signal.
As can be seen from the above, in the optical signal processing apparatus 1 provided in the embodiment of the present application, the splitting module 101 performs splitting processing on the input signal to obtain a service signal, a first OSC signal, and a second OSC signal; the first processing module 102 is configured to perform power adjustment on the first OSC signal and the second OSC signal respectively to obtain a first power amplification signal and a second power amplification signal, the second processing module 103 is configured to perform power adjustment on the service signal to obtain a third power amplification signal, and then the combining module 104 is configured to perform combining processing on the signal processing result of the first processing module 102 and the signal processing result of the second processing module 103 to obtain an output signal of the optical signal processing apparatus 1.
Therefore, after receiving an input signal, the optical signal processing apparatus 1 provided in this embodiment of the present application can perform power processing on two paths of OSC signals carried in the input signal, and synthesize two paths of power signals corresponding to the processing result and a service signal, and under a condition that the service signal includes an optical layer device signal and an electrical layer device signal, the optical signal processing apparatus provided in this embodiment of the present application can implement management of the optical layer device and the electrical layer device through the two-channel OSC signal, and can also implement monitoring of the optical layer device signal and the electrical layer device signal, thereby laying a foundation for stable and efficient transmission of signals in the optical layer device and the electrical layer device in an optical network.
Fig. 2 is a schematic structural diagram of a second optical signal processing apparatus 1 according to an embodiment of the present disclosure.
In fig. 2, the splitting module 101 in the optical signal processing apparatus 1 includes a first splitting unit 1011 and a second splitting unit 1012, wherein:
a first separation unit 1011 is configured to separate a traffic signal and a non-traffic signal from an input signal. A second separating unit 1012 is configured to separate the first OSC signal and the second OSC signal from the non-traffic signal.
In one embodiment, the non-traffic signal may include at least one of:
the monitoring record signal is used for monitoring and recording the transmission state of the service signal, and the monitoring track record signal is used for monitoring and tracking the transmission line state of the service signal.
In one embodiment, the non-traffic signal may be an OSC signal, and may exemplarily include at least one OSC signal.
In one embodiment, the traffic signal may be a signal in a certain band, such as a traffic signal in a C-band.
In one embodiment, the first separating unit 1011 and the second separating unit 1012 may be a first splitter and a second splitter. The first splitter is configured to split at least one OSC signal and a service signal from an input signal, and the second splitter is configured to split a first OSC signal and a second OSC signal from the two OSC signals, where, for example, the first OSC signal may be an OSC signal with a wavelength of 1490nm, and the second OSC signal may be an OSC signal with a wavelength of 1510 nm.
As can be seen from the above, the optical signal processing apparatus 1 according to the embodiment of the present invention, after receiving the input signal, separates the traffic signal and the non-traffic signal from the input signal by the first separating unit 1011 in the separating module 101, and separates the first OSC signal and the second OSC signal from the non-traffic signal by the second separating unit 1012, thereby laying a foundation for the subsequent separate processing of the dual-channel OSC signal.
Fig. 3 is a schematic structural diagram of a third optical signal processing apparatus 1 according to an embodiment of the present application.
In fig. 3, the first processing module 102 in the optical signal processing apparatus 1 includes a coupling unit 1021. The coupling unit 1021 is configured to separate a first to-be-detected signal and a first to-be-processed signal from the first OSC signal, and separate a second to-be-detected signal and a second to-be-processed signal from the second OSC signal; the first signal to be detected is used to determine the power of the first OSC signal, the second signal to be detected is used to determine the power of the second OSC signal, and the first signal to be processed and the second signal to be processed indicate signals that need to be power adjusted.
In one embodiment, the first signal to be detected and the second signal to be detected may be part of the signal components of the first OSC signal and the second OSC signal, respectively.
In one embodiment, the first signal to be processed may be a signal component of the first OSC signal excluding the first signal to be detected, and the second signal to be processed may be a signal component of the first OSC signal excluding the second signal to be detected.
In one embodiment, the coupling unit 1021 may be an optical splitter.
Illustratively, the coupling unit 1021 may include a first optical splitter and a second optical splitter in order to simultaneously process the first and second OSC signals, respectively. The first optical splitter is configured to split a first signal to be detected and a first signal to be processed from the first OSC signal; and the second optical splitter is used for processing the second signal to be detected and the second signal to be processed from the second OSC signal.
Illustratively, the coupling unit 1021 is configured to separate a first signal to be detected and a first signal to be processed from the first OSC signal based on the first data; the coupling unit 1021 is further configured to separate the second signal to be detected and the second signal to be processed from the second OSC signal based on the second data.
The first data is used for representing the ratio of a first signal to be detected to a first signal to be processed; and the second numerical value is used for expressing the ratio of the second signal to be detected to the second signal to be processed.
In one embodiment, the first data and the second data may be stored in a storage unit of the optical signal processing apparatus 1.
In one embodiment, the first data and the second data may be changed according to an input signal received by the optical signal processing device.
Illustratively, the first data is less than 1 and the second data is less than 1.
In one embodiment, the first data and the second data may be different.
In one embodiment, the first data may be 3/97 and the second data may be 3/97. That is, the component for the signals to be detected separated from the two OSC signals is much smaller than the component of the signals to be processed, and the two signals to be detected occupy 3% of the two OSC signals, while the two signals to be processed occupy 97% of the two OSC signals.
In fig. 3, the first processing module 102 in the optical signal processing apparatus 1 may further include a power detection unit 1022, where the power detection unit 1022 is configured to detect the first signal to be detected and the second signal to be detected respectively to obtain the first power and the second power. Wherein the first power represents a power of the first OSC signal; the second power represents a power of the second OSC signal.
In one embodiment, the first power and the second power may represent an optical power of the first OSC signal and an optical power of the second OSC signal, respectively.
In one embodiment, the detection of the first to-be-detected signal and the detection of the second to-be-detected signal by the power detection unit 1022 may be performed simultaneously.
In fig. 3, the first processing module 102 of the optical signal processing apparatus 1 may further include a power control unit 1023 and a power amplifier unit 1024. Wherein: the power control unit 1023 is used for controlling the working state of the power amplification unit according to the first power and the second power; and the power amplifier unit 1024 is configured to perform power adjustment on the first signal to be processed and the second signal to be processed respectively based on the control of the power control unit 1023.
In an embodiment, if the power control unit 1023 detects that any one of the first power and the second power is smaller than a preset power threshold, the corresponding power amplification unit 1024 is controlled to enter a power amplification state.
Correspondingly, if the power control unit 1023 detects that any one of the first power and the second power is greater than or equal to the preset power threshold, the corresponding power amplifier unit 1024 is controlled to enter a power attenuation state.
In an embodiment, the power control unit 1023 may further control the power amplifier unit 1024 to perform power attenuation and power amplification operations on the first signal to be processed and the second signal to be processed sequentially according to the first power and the second power.
In one embodiment, the power control unit 1023 may be implemented by a microprocessor.
In one embodiment, the power control unit 1023 may be a Complex Programmable Logic Device (CPLD).
In fig. 3, the power amplifier unit 1024 in the first processing module 102 of the optical signal processing apparatus 1 may include a power attenuation unit 10241 and a power amplifying unit 10242, wherein:
the power attenuation unit 10241 is configured to perform power attenuation processing on the first signal to be processed and the second signal to be processed, respectively, to obtain a first power attenuation signal and a second power attenuation signal.
The power amplifying unit 10242 is configured to perform power adjustment processing on the first power attenuated signal and the second power attenuated signal respectively to obtain a first power amplified signal and a second power amplified signal.
In one embodiment, the power attenuation unit 10241 performs power attenuation processing on the first to-be-processed signal and the second to-be-processed signal respectively to reduce the adverse effect of the first to-be-processed signal and the second to-be-processed signal that are too high in power on the power amplification unit 10242, which may be, for example, burning out the power amplification unit 10242.
In one embodiment, the power amplifying unit 10242 may perform at least one of the following operations:
and performing power amplification processing on at least one of the first power attenuation signal and the second power attenuation signal while keeping the power of the first power attenuation signal and the power of the second power attenuation signal unchanged.
In one embodiment, the power attenuation unit 10241 may be a Variable Optical Attenuator (VOA).
In one embodiment, the power amplifying unit 10242 may be an OEO amplifier.
In practical applications, the transmission rate of the OSC signal supported by the OEO amplifier is 2 to 155Mbps, and the transmission rate can be extended to 1.25Gbps by replacing the module. And because of the high-sensitivity receiver adopting Avalanche diode (APD) devices, the receiving sensitivity can reach more than-40 dBm, and long-span relay is supported, but the damage is easily caused when the power of the APD receiver is overloaded to exceed-10 dBm, so the VOA is added before OEO amplification to protect the safety of the receiver.
As can be seen from the above description, the first processing module 102 in the optical signal processing apparatus 1 provided in this embodiment of the present application includes a coupling unit 1021 for separating the first signal to be detected and the first signal to be processed from the first OSC signal, a power detecting unit 1022 for detecting the first signal to be detected and the second signal to be detected to obtain the first power and the second power, a power controlling unit 1023 for controlling the operating state of the power amplifier 1024 according to the first power and the second power, a power attenuating unit 12041 for performing power attenuation processing on the first signal to be processed and the second signal to obtain the first power attenuated signal and the second power attenuated signal, and a power amplifying unit 10242 for performing power adjustment processing on the first power attenuated signal and the second power attenuated signal, so that the first processing module 102 in the optical signal processing apparatus 1 provided in this application, the two OSC signals can be separated respectively, so that the state information of the service signals carried in the two OSC signals and the state information of the transmission line of the service signals can be acquired, and the power of the two OSC signals can be controlled according to the separation result, thereby providing conditions for the wavelength division multiplexing of the subsequent OSC and the service signals.
Fig. 4 is a schematic structural diagram of a third optical signal processing apparatus 1 according to an embodiment of the present application.
In fig. 4, the combining module 4 of the optical signal processing apparatus 1 includes a first combining unit 1041 and a second combining unit 1042, where the first combining unit 1041 is configured to combine the first power amplified signal and the second power amplified signal to obtain a first combined signal; the second combining unit 1042 is configured to perform combining processing on the first combined signal and the third power amplified signal to obtain an output signal.
In an embodiment, the first combining unit 1041 is specifically configured to perform wavelength division multiplexing on the first power amplified signal and the second power amplified signal.
In one embodiment, the second combining unit 1042 is specifically configured to perform wavelength division multiplexing on the first combined signal and the third power amplified signal.
In one embodiment, the first synthesizing unit 1041 and the second synthesizing unit 1042 may both be a combiner. For example, the first synthesizing unit 1041 may correspond to a first combiner, and the second synthesizing unit 1042 may correspond to a second combiner.
Thus, the combining module in the optical signal processing apparatus 1 according to the embodiment of the present application can also perform combining processing on the first OSC signal, the second OSC signal, and the service signal after power adjustment, thereby laying a foundation for signal transmission and acquisition of a signal transmission state and a transmission line state in a subsequent line in an optical network.
Based on the foregoing embodiments, the present embodiment provides a specific structure of the optical signal processing apparatus 1. Fig. 5 is a schematic structural diagram of an optical signal processing apparatus 1 according to an embodiment of the present disclosure.
In fig. 5, the optical signal processing apparatus 1 includes a first splitter 5011, a second splitter 5012, a first coupler 5021, a second coupler 5022, an optical power detection unit 5023, a CPLD control unit 5024, a first VOA5025, a second VOA5026, a first OEO amplifier 5027, a second OEO amplifier 5028, a first combiner 5031, a second combiner 5032, and an EDFA 504.
In fig. 5, a first splitter 5011 is used to split an input signal into two OSC signals and a service signal; wherein, the service signal is further amplified by the EDFA 504; the two OSC signals are separated by the second splitter 5012 to obtain a first OSC signal and a second OSC signal. Wherein the wavelength of the first OSC signal may be 1490 nm; the wavelength of the second OSC signal may be 1510 nm.
The first coupler 5021 is configured to divide the first OSC signal output by the second splitter 5012 into two paths, and a first component of the first OSC signal is input to the optical power detection unit 5023, so that the optical power detection unit detects the power of the first OSC signal; the second component of the first OSC signal is input to the first VOA5025 for power attenuation to reduce the probability that the first OEO amplifier 5027 will be overloaded and damaged due to the excessive OSC signal power. Illustratively, the first coupler 5021 may separate the two components from the first OSC signal according to the ratio of 3/97.
A second coupler 5022, configured to divide the second OSC signal output by the second splitter 5012 into two paths, where a first component of the second OSC signal is input to the optical power detection unit 5023, so that the optical power detection unit can detect the power of the second OSC signal; the second component of the second OSC signal is input to the second VOA5026 for power attenuation to reduce the probability that the second OEO amplifier 5028 will be overloaded and damaged due to the excessive OSC signal power. Illustratively, the second coupler 5022 may be configured to separate the two components from the first OSC signal according to a ratio of 3/97.
The first VOA5025 and the second VOA5026 are respectively used for performing power attenuation operation on the input first OSC signal and the second OSC signal under the control of the CPLD control unit 5024; the first and second OEO amplifiers 5027 and 5028 are respectively used for performing power adjustment operations on the input attenuated first and second OSC signals under the control of the CPLD control unit 5024, and the power adjustment operations may be power amplification operations.
The CPLD control unit 5024 is specifically configured to control the operating states of the first VOA5025, the second VOA5026, the first OEO amplifier 5027 and the second OEO amplifier 5028 according to the detection result of the optical power detection unit 5023. Illustratively, controlling the operating states of the first VOA5025 and the second VOA5026 includes: controlling the attenuation rate of the first VOA5025 and the second VOA5026 to the input signal; controlling the operating states of the first OEO amplifier 5027 and the second OEO amplifier 5028 includes controlling the amplification of the input signals of the first OEO amplifier 5027 and the second OEO amplifier 5028.
The first combiner 5031 is configured to combine the two OSC signals output by the first OEO amplifier 5027 and the second OEO amplifier.
The second combiner 5032 is configured to combine the output signal of the first combiner 5031 and the output signal of the EDFA 504.
The EDFA504 may be a conventional EDFA unit, or other modules capable of performing an optical amplification operation on the service signal.
Illustratively, the transmission rate supported by the first and second OEO amplifiers 5027 and 5028 for the OSC signal is in the range of 2 to 155Mbps, and the transmission rate can be extended to 1.25Gbps by replacing the modules. The sensitivity of a high sensitivity receiver using APD devices can reach above-40 dBm, but since APD devices are susceptible to damage when power overloads, such as above-10 dBm, two VOAs are added before two OEO amplifiers to protect the receiver.
As can be seen from the above, the optical signal processing apparatus 1 provided in the embodiment of the present application is improved on the basis of the EDFA, so that the optical network is upgraded, and monitoring and management of a line state and a signal transmission state in the optical network can be implemented through a dual-channel OSC signal without adding new equipment, thereby providing a strong guarantee for upgrading the optical network.
Based on the foregoing embodiments, the present application provides a communication system including at least one optical signal processing apparatus 1 as described in any of the foregoing embodiments.
Fig. 6 is a schematic structural diagram of a communication system 6 including at least one optical signal processing apparatus according to an embodiment of the present disclosure.
In fig. 6, the communication system 6 includes three parts, a first transmission station 601, a relay station 602, and a second transmission station 603.
The first transmission site 601 and the second transmission site 603 respectively include a plurality of Optical Transform Units (OTUs), a multiplexer/demultiplexer, an Optical Amplifier (OA), an Optical Channel detector (OCM), an OSC multiplexer/demultiplexer, and an Optical Line Protection system (OLP).
The two multiplexers/demultiplexers in the first transmission site 601 and the second transmission site 603 may combine signals with wavelengths λ 1 and λ 2 … λ n into one signal, and may further decompose one signal into n signals with wavelengths λ 1 and λ 2 … λ n. Wherein n is an integer greater than 2.
The relay station 602 includes a first device 6021, a second device 6022, a third device 6023, and a fourth device 6024. The first device 6021, the second device 6022, the third device 6023, and the fourth device 6024 may all be the optical signal processing device 1 described in the foregoing embodiment.
In the relay station 602, the first device 6021 and the second device 6022 are active lines, the first device 6021 is configured to transmit a signal sent by the first transmission station 601 to the second transmission station 603, and the second device 6022 is configured to transmit a signal sent by the second transmission station 603 to the first transmission station 601; the third means 6023 and the fourth means 6024 are backup lines, and the third means 6023 is configured to transmit the signal transmitted by the first transmission station 601 to the second transmission station 603, and the fourth means 6024 is configured to transmit the signal transmitted by the second transmission station 603 to the first transmission station 601.
The first transmission site 601 and the second transmission site 603 can implement transmission and reception of signals carrying the first OSC signal OSC1, the second OSC signal OSC2, and the service signal through mutual cooperation among the above modules and units, and the relay site 602.
In fig. 6, a first transmission site 601, a relay site 602, and a second transmission site 603 cooperate with each other to form a multi-span bidirectional long distance optical transmission network with dual channel OSC signals and optical line protection, which has the decoupling capability of optical layer and electrical layer and can provide OSC signals for optical layer and electrical layer devices at the same time. The optical layer device can use the traditional OSC signal with the wavelength of 1510nm, and can manage each optical layer device such as an optical amplifier, a multiplexer/demultiplexer, an OLP, an OCM, and the like based on the original protocol; the electrical layer device can use an OSC signal with a wavelength of 1490nm, and on the basis of the ethernet standard protocol, it can support different electrical layer devices to share the OSC signal, so as to implement operation and maintenance management of various different types of electrical layer devices.
In fig. 6, in the first transmission site 601 and the second transmission site 603, only by replacing or modifying each OA module according to the optical signal processing apparatus 1 provided in the embodiment of the present application, the processing function of the OSC signal with a wavelength of 1490nm can be added, so that the multiplexing of the two paths of OSC signals onto the service signal can be realized.
After the multiplexed signal passes through the OLP, the signals sent and received by the main line/the standby line both carry the service signal and the dual-channel OSC signal, and at the relay site 602, the signal attenuation caused by the optical cable loss can be compensated.
As can be seen from the above, the communication system after the optical signal processing apparatus provided in the embodiment of the present application can quickly and accurately determine whether the state of the signal transmission line has a fault according to the power change of the two OSC signals, and can also switch between the main line and the standby line according to the determination result of the fault, so as to implement 1+1/1:1 protection of the OSC signal and the service signal, thereby improving the stability and reliability of the transmission of the line signal, and enabling optical layer device manufacturers and electrical layer device manufacturers to implement cross-region, highly reliable, independent network management and networking operation of the optical network on the basis of the two OSC signals.
In some embodiments, functions of or modules included in the apparatus provided in the embodiments of the present application may be used to execute the method described in the above method embodiments, and specific implementation thereof may refer to the description of the above method embodiments, and for brevity, will not be described again here.
The foregoing description of the various embodiments is intended to highlight various differences between the embodiments, and the same or similar parts may be referred to each other, and for brevity, will not be described again herein.
The methods disclosed in the method embodiments provided by the present application can be combined arbitrarily without conflict to obtain new method embodiments.
Features disclosed in various product embodiments provided by the application can be combined arbitrarily to obtain new product embodiments without conflict.
The features disclosed in the various method or apparatus embodiments provided herein may be combined in any combination to arrive at new method or apparatus embodiments without conflict.
The above description is only a preferred embodiment of the present application, and not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application, or which are directly or indirectly applied to other related technical fields, are included in the scope of the present application.
Claims (10)
1. An optical signal processing apparatus, characterized in that the apparatus comprises: the device comprises a separation module, a first processing module, a second processing module and a synthesis module; wherein:
the separation module is configured to separate an input signal of the optical signal processing apparatus to obtain a service signal, a first optical supervisory channel OSC signal, and a second OSC signal;
the first processing module is configured to perform power adjustment on the first OSC signal and the second OSC signal respectively to obtain a first power amplification signal and a second power amplification signal;
the second processing module is configured to perform power adjustment on the service signal to obtain a third power amplification signal;
the synthesis module is configured to synthesize the first power amplified signal, the second power amplified signal, and the third power amplified signal to obtain an output signal of the optical signal processing apparatus.
2. The apparatus of claim 1, wherein the separation module comprises a first separation unit and a second separation unit; wherein:
the first separation unit is configured to separate the traffic signal and the non-traffic signal from the input signal;
the second separation unit is configured to separate the first OSC signal and the second OSC signal from the non-traffic signal.
3. The apparatus of claim 1, wherein the first processing module comprises a coupling unit; wherein:
the coupling unit is configured to separate a first signal to be detected and a first signal to be processed from the first OSC signal, and separate a second signal to be detected and a second signal to be processed from the second OSC signal; wherein the first signal to be detected is used to determine the power of the first OSC signal; the second signal to be detected is used for determining the power of the second OSC signal; the first signal to be processed and the second signal to be processed represent signals which need to be power-adjusted.
4. The apparatus of claim 3, wherein the first processing module further comprises a power detection unit; wherein:
the power detection unit is used for respectively detecting the first signal to be detected and the second signal to be detected to obtain a first power and a second power; wherein the first power represents a power of the first OSC signal; the second power represents a power of the second OSC signal.
5. The apparatus of claim 4, wherein the first processing module further comprises a power control unit and a power amplifier unit; wherein:
the power control unit is configured to control a working state of the power amplifier unit according to the first power and the second power;
and the power amplifier unit is used for respectively adjusting the power of the first signal to be processed and the power of the second signal to be processed based on the control of the power control unit.
6. The apparatus of claim 5, wherein the power amplifying unit comprises a power attenuating unit and a power amplifying unit; wherein:
the power attenuation unit is used for respectively performing power attenuation processing on the first signal to be processed and the second signal to be processed to obtain a first power attenuation signal and a second power attenuation signal;
the power amplifying unit is configured to perform power adjustment processing on the first power attenuation signal and the second power signal data, respectively, to obtain the first power amplification signal and the second power amplification signal.
7. The apparatus according to claim 3, characterized in that the coupling unit is adapted to separate the first signal to be detected and the first signal to be processed from the first OSC signal on the basis of first data; the coupling unit is further configured to separate the second signal to be detected and the second signal to be processed from the second OSC signal based on second data; wherein the first data represents a ratio of the first signal to be detected to the first signal to be processed; the second data represents a ratio of the second signal to be detected to the second signal to be processed.
8. The apparatus of claim 7, wherein the first data is less than 1; the second data is less than 1.
9. The apparatus of claim 1, wherein the synthesis module comprises a first synthesis unit and a second synthesis unit; wherein:
the first combining unit is configured to combine the first power amplified signal and the second power amplified signal to obtain a first combined signal;
the second synthesis unit is configured to synthesize the first synthesis signal and the third power amplification signal to obtain the output signal.
10. A communication system, characterized in that it comprises at least one optical signal processing device according to any one of claims 1-9.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114374429A (en) * | 2021-12-08 | 2022-04-19 | 武汉光迅科技股份有限公司 | C + + band EDFA device with single-fiber bidirectional OSC |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1588828A (en) * | 2004-10-25 | 2005-03-02 | 烽火通信科技股份有限公司 | Light relay station device for light transmission, system and its automatic fain regulating method |
| CN101043271A (en) * | 2007-04-26 | 2007-09-26 | 华为技术有限公司 | Method, equipment and system for switching optical service signal protection |
| CN101699778A (en) * | 2009-11-04 | 2010-04-28 | 中兴通讯股份有限公司 | Optical multiplexer unit, optical multiplexer method, optical demultiplexer unit and optical demultiplexer method |
| CN201766596U (en) * | 2009-12-31 | 2011-03-16 | 中兴通讯股份有限公司 | Device increasing transmission distance of optical supervisory channel |
| CN102130697A (en) * | 2010-01-20 | 2011-07-20 | 华为技术有限公司 | Receiver, transmitter and feedback device, transceiver and signal processing method |
| CN105871455A (en) * | 2016-05-31 | 2016-08-17 | 国网新疆电力公司阿勒泰供电公司 | OSC amplification EDFA device for optical line protection system |
| US10411796B1 (en) * | 2018-05-22 | 2019-09-10 | Ciena Corporation | Optical fiber characterization measurement systems and methods |
-
2020
- 2020-09-18 CN CN202010990227.0A patent/CN112217568B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1588828A (en) * | 2004-10-25 | 2005-03-02 | 烽火通信科技股份有限公司 | Light relay station device for light transmission, system and its automatic fain regulating method |
| CN101043271A (en) * | 2007-04-26 | 2007-09-26 | 华为技术有限公司 | Method, equipment and system for switching optical service signal protection |
| CN101699778A (en) * | 2009-11-04 | 2010-04-28 | 中兴通讯股份有限公司 | Optical multiplexer unit, optical multiplexer method, optical demultiplexer unit and optical demultiplexer method |
| CN201766596U (en) * | 2009-12-31 | 2011-03-16 | 中兴通讯股份有限公司 | Device increasing transmission distance of optical supervisory channel |
| CN102130697A (en) * | 2010-01-20 | 2011-07-20 | 华为技术有限公司 | Receiver, transmitter and feedback device, transceiver and signal processing method |
| CN105871455A (en) * | 2016-05-31 | 2016-08-17 | 国网新疆电力公司阿勒泰供电公司 | OSC amplification EDFA device for optical line protection system |
| US10411796B1 (en) * | 2018-05-22 | 2019-09-10 | Ciena Corporation | Optical fiber characterization measurement systems and methods |
Non-Patent Citations (2)
| Title |
|---|
| 李云霞: "《光纤通信》", 30 September 2016 * |
| 钟文锦: "DWDM通信工程的组网设计方案研究", 《信息与电脑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114374429A (en) * | 2021-12-08 | 2022-04-19 | 武汉光迅科技股份有限公司 | C + + band EDFA device with single-fiber bidirectional OSC |
| CN114374429B (en) * | 2021-12-08 | 2023-07-04 | 武汉光迅科技股份有限公司 | C++ band EDFA device with single-fiber bidirectional OSC |
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