Light protection device and method

Abstract

The invention discloses a light protection device and method. The device comprises an optical splitter, an echo extraction module, an echo detection module and a control module, the optical splitter is connected with the echo extraction module, the echo extraction module is connected with the echo detection module, the echo detection module is connected with the control module, and the control module is connected with the optical splitter; the optical splitter is used for carrying out power distribution on main and standby lines in the optical fiber communication system according to the target splitting ratio; the echo extraction module is used for extracting echo signals of the main and standby lines; the echo detection module is used for performing signal detection processing on the echo signal to obtain a detection result; the control module is used for determining the abnormal state of the main and standby lines according to the detection result and adjusting and updating the target splitting ratio based on the abnormal state. The technical problems of poor timeliness and high energy loss of an optical fiber line protection method in related technologies are solved.

Description

Technical Field

[0001] The present application relates to the field of optical fiber communication technology, and in particular to an optical protection device and method. Background Art

[0002] Fiber optic communication is a communication method that uses light waves as information carriers to convert electronic signals into optical signals and transmit data through optical fiber media. If the optical fiber line is damaged, it will lead to problems such as loss of communication quality and network interruption. Therefore, it is necessary to establish an optical fiber line protection module in the optical fiber communication system, and build working lines and protection lines in the optical protection module. In related technologies, the optical fiber line protection method usually adopts the "1+1" protection method and the "1:1" protection method.

[0003] If the "1+1" protection method is adopted, the transmitter outputs the same optical signal to the working line and the protection line at the same time, and the receiver first receives the optical signal on the working line. In the case of a working line failure, the receiver receives the optical signal on the protection line. Since the transmitter needs to distribute the optical signal to the working line and the protection line at the same power, the transmitter sends the same optical signal to the working line and the protection line at the same time, but only one line is actually working, which will lead to energy waste. If the "1:1" protection method is adopted, the transmitter first selects the working line for data transmission and idles the protection line. In the case of a working line failure, it switches to the protection line. However, since the transmitter cannot determine the status of the working line, the receiver needs to determine the communication abnormality before switching to the protection line, and the switching efficiency is low. In addition, the "1+1" protection method and the "1:1" protection method cannot detect the status of the protection line and cannot determine whether the protection line can work normally.

[0004] As can be seen from the above, how to determine the status of the working line and the protection line, adjust the ratio of the optical signal sent by the transmitter to the working line and the protection line, and timely detect the line status in the process of protecting the optical fiber line, so as to improve the timeliness of the optical fiber line protection method and reduce energy loss has become one of the important technical issues in the relevant technical field. In view of the above problems, no effective solution has been proposed yet. Summary of the invention

[0005] The embodiments of the present application provide an optical protection device and method to at least solve the technical problems in the related art that the optical fiber line protection method has poor timeliness and high energy loss.

[0006] According to one aspect of an embodiment of the present application, an optical protection device is provided, including: a splitter, an echo extraction module, an echo detection module and a control module, wherein the splitter is connected to the echo extraction module, the echo extraction module is connected to the echo detection module, the echo detection module is connected to the control module, and the control module is connected to the splitter; the splitter is used to distribute power to the primary and backup lines in the optical fiber communication system according to the target splitting ratio; the echo extraction module is used to extract the echo signals of the primary and backup lines; the echo detection module is used to perform signal detection processing on the echo signals to obtain detection results; the control module is used to determine the abnormal state of the primary and backup lines according to the detection results, and adjust and update the target splitting ratio based on the abnormal state.

[0007] Optionally, the primary and backup lines include a working line and a protection line; the echo signal includes a first echo signal and a second echo signal; the echo extraction module includes: a first extraction unit, used to extract the first echo signal from the working line; a second extraction unit, used to extract the second echo signal from the protection line.

[0008] Optionally, the splitter includes an input port, a first output port and a second output port, wherein the input port is used to receive an optical signal of a service input, the first output port is connected to a first extraction unit, and the second output port is connected to a second extraction unit; the splitter is also used to branch the optical signal according to a target splitting ratio to obtain a first branch signal and a second branch signal, transmit the first branch signal to a working line through the first output port and the first extraction unit, and transmit the second branch signal to a protection line through the second output port and the second extraction unit, wherein the target splitting ratio is the ratio of the optical power of the first branch signal to the optical power of the second branch signal.

[0009] Optionally, the detection result includes a first detection result and a second detection result; the echo detection module includes: a first detection unit, used to perform signal detection processing on the first echo signal to obtain a first detection result, wherein the first detection result includes a data conversion processing result corresponding to the first echo signal; a second detection unit, used to perform abnormality detection on the second echo signal to obtain a second detection result, wherein the second detection result includes the data conversion processing result corresponding to the second echo signal.

[0010] Optionally, the first detection unit also includes: a first conversion component, used to convert the first echo signal from a power signal into a current signal; an amplification component, used to convert the current signal into a first voltage signal; a filtering component, used to filter the signal noise of the first voltage signal to obtain a second voltage signal; and a second conversion component, used to convert the second voltage signal into an output digital signal.

[0011] Optionally, the control module is also used to calculate a first length based on the first detection result, calculate a second length based on the second detection result, obtain a first optical output power of the working line, obtain a second optical output power of the protection line, and determine the abnormal states corresponding to the working line and the protection line based on the first length, the second length, the first optical output power and the second optical output power, wherein the first length is the effective optical fiber length of the working line, and the second length is the effective optical fiber length of the protection line.

[0012] Optionally, the control module is further configured to determine the reciprocal of the target splitting ratio as the updated target splitting ratio when it is determined that a line abnormality exists in the working line according to the abnormal state.

[0013] Optionally, the control module also includes a communication component, wherein the communication component is used to report the target splitting ratio, the first length, the second length, the first optical output power, the second optical output power and the abnormal status to the optical fiber communication system; the communication component is also used to receive configuration requirement information issued by a network device associated with the optical fiber communication system, and adjust and update the target splitting ratio according to the configuration requirement information.

[0014] Optionally, the optical protection device also includes a comparison circuit module, which is connected to the working line and the protection line; the comparison circuit module is used to trigger the switching mechanism of the control module when the ratio of the optical power of the protection line to the optical power of the working line is less than a preset threshold, so that the transmission line of the optical signal is switched to the protection line.

[0015] According to another aspect of an embodiment of the present application, an optical protection method is also provided, which is applied to any of the above-mentioned optical protection devices, and the optical protection method includes: allocating power to the main and backup lines in the optical fiber communication system according to the target splitting ratio; extracting echo signals from the main and backup lines; performing signal detection processing on the echo signals to obtain detection results; determining the abnormal status of the main and backup lines according to the detection results, and adjusting and updating the target splitting ratio based on the abnormal status.

[0016] In the embodiment of the present application, the optical splitter is connected to the echo extraction module, the echo extraction module is connected to the echo detection module, the echo detection module is connected to the control module, and the control module is connected to the optical splitter; the optical splitter is used to distribute power to the main and standby lines in the optical fiber communication system according to the target splitting ratio; the echo extraction module is used to extract the echo signal of the main and standby lines; the echo detection module is used to perform signal detection processing on the echo signal to obtain the detection result; the control module is used to determine the abnormal state of the main and standby lines according to the detection result, and adjust and update the target splitting ratio based on the abnormal state. Therefore, the present application achieves the purpose of accurately judging the line state and adjusting the splitting ratio in time through the detection and analysis of the echo signal, thereby achieving the technical effect of improving the timeliness of the optical fiber line protection method and reducing energy loss, thereby solving the technical problems of poor timeliness and high energy loss of the optical fiber line protection method in the related technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 is a structural block diagram of a light protection device according to an embodiment of the present application;

[0019] Figure 2 is a schematic diagram of an optional first extraction unit according to an embodiment of the present application;

[0020] Figure 3 is a schematic diagram of an optional first detection unit according to an embodiment of the present application;

[0021] Figure 4 is a schematic diagram of an optional control module according to an embodiment of the present application;

[0022] Figure 5 is a flow chart of an optional control module function according to an embodiment of the present application;

[0023] Figure 6 is a schematic diagram of an optional optical fiber communication system according to an embodiment of the present application;

[0024] Figure 7 is a schematic diagram of an optional optical multiplex section protection system according to an embodiment of the present application;

[0025] Figure 8 This is a hardware structure block diagram of an optional terminal device for an optical protection method according to an embodiment of the present application. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0027] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0028] According to an embodiment of the present application, an embodiment of a light protection method is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0029] Under the above operating environment, the embodiment of the present application provides the following Figure 1 The light protection device shown, Figure 1 is a structural block diagram of a light protection device according to an embodiment of the present application, such as Figure 1 As shown, the device includes: a spectrometer, an echo extraction module, an echo detection module and a control module, wherein the spectrometer is connected to the echo extraction module, the echo extraction module is connected to the echo detection module, the echo detection module is connected to the control module, and the control module is connected to the spectrometer; the spectrometer is used to distribute power to the main and standby lines in the optical fiber communication system according to the target splitting ratio; the echo extraction module is used to extract the echo signals of the main and standby lines; the echo detection module is used to perform signal detection processing on the echo signals to obtain detection results; the control module is used to determine the abnormal state of the main and standby lines according to the detection results, and adjust and update the target splitting ratio based on the abnormal state.

[0030] The above-mentioned optical splitter can be an optical element that distributes the input optical signal to two or more output channels according to a set ratio. By using the optical splitter, the distribution of output power can be adjusted according to different requirements.

[0031] The echo signal may be an optical signal reflected back due to various factors (such as the connection point, cracks or bends of the optical fiber) during the optical fiber signal transmission process. The echo signal may be used to assist in confirming the status of the optical fiber signal transmission line.

[0032] The echo detection module may at least include a power-to-current (P / I) conversion module, a transimpedance (TIA) amplifier module, a bandpass filter module, and an analog-to-digital converter (ADC) module.

[0033] The above-mentioned P / I conversion module can be used to convert the received optical signal into a current signal. The P / I conversion module can be implemented by using a photodiode, which generates a current output proportional to the optical power when receiving the optical signal.

[0034] The above-mentioned TIA module can be used to amplify the current signal output by the P / I conversion module into a voltage signal. By using the TIA module, the signal strength can be improved. The above-mentioned bandpass filter module can be used to filter out noise signals. By using the bandpass filter module, the signal quality can be improved, the influence of noise and interference can be reduced, and the accuracy and reliability of signal detection can be improved. The above-mentioned ADC module can be used to convert continuously changing analog signals into digital signals. By using the ADC module, the signal can be more conveniently processed by the digital system, which is convenient for more complex signal analysis, storage and transmission.

[0035] Specifically, during the operation of the optical fiber communication system, the splitter distributes the optical signal of the service input to the primary and backup lines in the optical fiber communication system according to the target splitting ratio. The echo extraction module monitors the echo signals in the primary and backup lines in real time and extracts the echo signals in the primary and backup lines. Furthermore, the echo detection module receives the echo signal transmitted by the echo extraction module, processes the echo signal, converts the analog signal into a digital signal, and obtains the detection result by analyzing the parameters of the digital signal. The control module analyzes the detection result, determines the abnormal state of the primary and backup lines, and adjusts and updates the target splitting ratio according to the abnormal state.

[0036] It is easy to understand that through the above-mentioned optical protection device, in the embodiment of the present application, the echo extraction module and the echo detection module are used to detect and analyze the echo signal in a timely and accurate manner, so that the line status can be accurately judged and the target splitting ratio can be adjusted in time, thereby reducing the time for fault detection and line switching, improving the timeliness of the optical fiber line protection method, and reducing the energy loss during the operation of the optical fiber communication system.

[0037] The above-mentioned light protection device according to the embodiment of the present application is further introduced below.

[0038] Optionally, in the above-mentioned optical protection device, the main and backup lines include a working line and a protection line; the echo signal includes a first echo signal and a second echo signal; the echo extraction module includes: a first extraction unit, used to extract the first echo signal from the working line; a second extraction unit, used to extract the second echo signal from the protection line.

[0039] The protection line can be used as a substitute line to transmit signals when the working line is in a fault state. The first echo signal can be used to assist in determining the state of the working line in the primary and backup lines. The second echo signal can be used to assist in determining the state of the protection line in the primary and backup lines.

[0040] The first extraction unit may include a first extraction port, a second extraction port, and a third extraction port. The first extraction port may be used to receive a signal transmitted by an optical splitter. The second extraction port may be used to transmit the signal transmitted by the optical splitter to a working line, and the second extraction port may also be used to receive a first echo signal in the working line. The third extraction port may be used to transmit the first echo signal to an echo detection module. The first extraction unit may be implemented based on a circulator.

[0041] The second extraction unit may include a fourth extraction port, a fifth extraction port, and a sixth extraction port. The fourth extraction port may be used to receive a signal transmitted by the optical splitter. The fifth extraction port may be used to transmit the signal transmitted by the optical splitter to the protection line, and the sixth extraction port may also be used to receive a second echo signal in the protection line. The third extraction port may be used to transmit the second echo signal to the echo detection module. The second extraction unit may be implemented based on a circulator.

[0042] Specifically, during the operation of the optical fiber communication system, the first extraction unit in the echo extraction module monitors the first echo signal in the working line in real time and extracts the first echo signal from the working line; the second extraction unit in the echo extraction module monitors the first echo signal in the protection line in real time and extracts the second echo signal from the protection line.

[0043] It should be noted that, in an optional implementation, the first extraction unit and the second extraction unit in the echo extraction module may be implemented with the same structure.

[0044] In an exemplary application scenario, Figure 2 is a schematic diagram of an optional first extraction unit according to an embodiment of the present application, such as Figure 2 As shown, the first extraction unit is implemented based on a circulator. The first extraction unit includes a first extraction port (denoted as port 1), a second extraction port (denoted as port 2), and a third extraction port (denoted as port 3). The signal transmitted by the optical splitter enters the first extraction unit through port 1. Further, the signal transmitted by the optical splitter is transmitted from the first extraction unit to the working line through port 2; the first echo signal in the working line enters the first extraction unit through port 2. Further, the first echo signal in the working line is transmitted from the first extraction unit to the echo detection module through port 3.

[0045] It is easy to understand that through the above-mentioned optical protection device, in the embodiment of the present application, by respectively setting the first extraction unit and the second extraction unit in the working line and the protection line, the first echo signal in the working line and the second echo signal in the protection line can be obtained respectively, and the status of the two lines can be monitored simultaneously, and it can be determined in advance whether the two lines have faults, so that when any line fails, the optical fiber communication system can respond quickly and switch the line to ensure the normal operation of the optical fiber communication system, reduce the time for fault detection and line switching, improve the timeliness of the optical fiber line protection method, and improve the overall stability and reliability of the optical fiber communication system.

[0046] Optionally, in the above-mentioned optical protection device, the splitter includes an input port, a first output port and a second output port, wherein the input port is used to receive an optical signal of a service input, the first output port is connected to a first extraction unit, and the second output port is connected to a second extraction unit; the splitter is also used to branch the optical signal according to a target splitting ratio to obtain a first branch signal and a second branch signal, transmit the first branch signal to the working line through the first output port and the first extraction unit, and transmit the second branch signal to the protection line through the second output port and the second extraction unit, wherein the target splitting ratio is the ratio of the optical power of the first branch signal to the optical power of the second branch signal.

[0047] The above-mentioned splitter can be implemented based on a splitter with an adjustable splitting ratio. The above-mentioned splitter with an adjustable splitting ratio can be implemented through a variety of splitting methods, and the above-mentioned splitting methods may include but are not limited to a method based on a fiber circulator, a method based on a Bragg grating, a method based on a half-wave plate, etc.

[0048] The first branch signal may be an optical signal transmitted in the working line. The second branch signal may be an optical signal transmitted in the protection line. The second branch signal may also be used to assist in detecting the recovery of the working line.

[0049] It should be noted that the sum of the optical power of the first branch signal and the optical power of the second branch signal is less than the optical power of the optical signal of the service input received by the input port. The above-mentioned target splitting ratio can be adjusted continuously by any splitting ratio, and the above-mentioned target splitting ratio can also be adjusted according to a certain splitting ratio interval.

[0050] In an exemplary application scenario, Figure 1 As shown, the above-mentioned optical protection device is configured. If the working line in the main and backup lines is in a normal state, the power configuration of the first branch signal is recorded as P1, and the power configuration of the second branch signal is recorded as P2, and P1 is set to be greater than or equal to P2. The target splitting ratio is N=P1 / P2, N is greater than or equal to 1. If the working line in the main and backup lines is in an abnormal state, the target splitting ratio is configured to 1 / N.

[0051] Still in the above application scenario, the above splitter can be a splitter with an adjustable splitting ratio, which includes an input port, a first output port and a second output port, the first output port is connected to the first extraction unit, and the second output port is connected to the second extraction unit, and the input port of the splitter is used to receive the optical signal sent by the service. Furthermore, the splitter branches the optical signal received at the input port according to the target splitting ratio, dividing it into a first branch signal and a second branch signal, and transmits the first branch signal to the working line through the first output port and the first extraction unit, and transmits the second branch signal to the protection line through the second output port and the second extraction unit.

[0052] It is easy to understand that through the above-mentioned optical protection device, in the embodiment of the present application, by setting the target splitting ratio, the distribution of optical signals can be adaptively adjusted according to the states of the working line and the protection line. When the working line is normal, the working line receives most of the signals, and the protection line only receives a small part of the signals for detecting the line state. When the working line is abnormal, the protection line is used for signal transmission, which improves the adaptability of the optical protection device. When the line detection function is realized, energy loss is reduced and energy utilization efficiency is improved.

[0053] Optionally, in the above-mentioned optical protection device, the detection result includes a first detection result and a second detection result; the echo detection module includes: a first detection unit, used to perform signal detection processing on the first echo signal to obtain a first detection result, wherein the first detection result includes a data conversion processing result corresponding to the first echo signal; a second detection unit, used to perform abnormality detection on the second echo signal to obtain a second detection result, wherein the second detection result includes a data conversion processing result corresponding to the second echo signal.

[0054] The first detection unit may include a first detection input port and a first detection output port. The first detection input port may be used to receive a first echo signal. The first detection output port may be used to transmit a data conversion processing result corresponding to the first echo signal to the control module.

[0055] The second detection unit may include a second detection input port and a second detection output port. The second detection input port may be used to receive a second echo signal. The second detection output port may be used to transmit a data conversion processing result corresponding to the second echo signal to the control module.

[0056] The first detection result can be used to assist in determining the state of the working line. The data conversion processing result corresponding to the first echo signal can include the signal strength in the working line and the delay time of the signal transmission in the working line. The second detection result can be used to assist in determining the state of the protection line. The data conversion processing result corresponding to the second echo signal can include the signal strength in the protection line and the delay time of the signal transmission in the protection line.

[0057] Specifically, the first detection unit receives the first echo signal transmitted by the first extraction unit, and performs signal detection processing (such as signal conversion processing, signal amplification processing, signal filtering processing, etc.) on the first echo signal to obtain a data conversion processing result corresponding to the first echo signal; the second detection unit receives the second echo signal transmitted by the second extraction unit, and performs signal detection processing (such as signal conversion processing, signal amplification processing, signal filtering processing, etc.) on the second echo signal to obtain a data conversion processing result corresponding to the second echo signal.

[0058] It should be noted that, in an optional implementation, the first detection unit and the second detection unit in the above echo detection module may be implemented by adopting the same structure.

[0059] It is easy to understand that through the above-mentioned optical protection device, in the embodiment of the present application, the first detection unit and the second detection unit are used to process the first echo signal of the working line and the second echo signal of the protection line respectively. The optical protection device can monitor and judge the status of the two lines in real time, promptly discover potential faults in the lines, and improve the response speed of the optical fiber transmission system to avoid system operation interruption.

[0060] Optionally, in the above-mentioned optical protection device, the first detection unit also includes: a first conversion component, used to convert the first echo signal from a power signal into a current signal; an amplification component, used to convert the current signal into a first voltage signal; a filtering component, used to filter the signal noise of the first voltage signal to obtain a second voltage signal; and a second conversion component, used to convert the second voltage signal into an output digital signal.

[0061] The first conversion component may be implemented by a P / I converter. The amplification component may be implemented by a TIA amplifier. The filtering component may be implemented by a bandpass filter. The second conversion component may be implemented by an ADC converter.

[0062] The above-mentioned P / I conversion module can be used to convert the received optical signal into a current signal. The P / I conversion module can be implemented by using a photodiode, which generates a current output proportional to the optical power when receiving the optical signal.

[0063] The above-mentioned TIA module can be used to amplify the current signal output by the P / I conversion module into a voltage signal. By using the TIA module, the signal strength can be improved. The above-mentioned bandpass filter module can be used to filter out noise signals. By using the bandpass filter module, the signal quality can be improved, the influence of noise and interference can be reduced, and the accuracy and reliability of signal detection can be improved. The above-mentioned ADC module can be used to convert continuously changing analog signals into digital signals. By using the ADC module, the signal can be more conveniently processed by the digital system, which is convenient for more complex signal analysis, storage and transmission.

[0064] Still in Figure 1 In the application scenario shown, Figure 3 is a schematic diagram of an optional first detection unit according to an embodiment of the present application, such as Figure 3As shown, the first detection unit includes a first detection input port and a first detection output port. The first detection unit also includes a P / I converter, a TIA amplifier, a bandpass filter, and an ADC converter. The third extraction port of the first extraction unit is connected to the first detection input port of the first detection unit, and the first echo signal is transmitted to the first detection unit. The first detection input port of the first detection unit receives the first echo signal, and the first echo signal is transmitted to the P / I converter, and the first echo signal is converted into a current signal. The current signal is converted into a voltage signal through the TIA amplifier, and the voltage signal is filtered out of the base low noise in the voltage signal through the bandpass filter, and the voltage signal strength corresponding to the business is output. The voltage signal strength corresponding to the business is converted into a digital signal through the ADC converter and transmitted to the control module through the first detection output port.

[0065] It is easy to understand that through the above-mentioned optical protection device, in the embodiment of the present application, the first conversion component, the amplification component, the filtering component, and the second conversion component are utilized to perform photoelectric conversion, signal amplification, noise filtering, and analog-to-digital conversion on the first echo signal, thereby improving the detection accuracy of the first echo signal and improving the reliability of the detection result.

[0066] Optionally, in the above-mentioned optical protection device, the control module is also used to calculate a first length according to a first detection result, calculate a second length according to a second detection result, obtain a first optical output power of the working line, obtain a second optical output power of the protection line, and determine the abnormal states corresponding to the working line and the protection line based on the first length, the second length, the first optical output power and the second optical output power, wherein the first length is the effective optical fiber length of the working line, and the second length is the effective optical fiber length of the protection line.

[0067] The above-mentioned effective optical fiber length can be the actual optical fiber length that can normally transmit optical signals without any breakage or damage to the optical fiber.

[0068] In an exemplary application scenario, Figure 4 is a schematic diagram of an optional control module according to an embodiment of the present application, such as Figure 4 As shown, the control module may include the following four functional modules: an effective optical fiber length detection functional module, a splitter splitting ratio controller functional module, a module light output detection functional module, and a communication functional module.

[0069] Still in the above application scenario, the effective optical fiber length detection function module receives the first detection result, and uses the effective optical fiber length detection function module to calculate the effective optical fiber length of the working line according to the signal strength in the first detection result and the delay time of the signal transmission; uses the module light output detection module to detect and obtain the first light output power of the working line and the second light output power of the protection line; uses the splitter splitting ratio controller function module to determine the abnormal states corresponding to the working line and the protection line based on the first length, the second length, the first light output power and the second light output power.

[0070] Optionally, in the above optical protection device, the control module is further configured to determine the reciprocal of the target splitting ratio as the updated target splitting ratio when it is determined that a line abnormality exists in the working line according to the abnormal state.

[0071] In an exemplary application scenario, Figure 4 As shown, the optical splitter splitting ratio controller function module can also be used to adjust the target splitting ratio according to the abnormal states corresponding to the working line and the protection line. The optical splitter splitting ratio controller function module is used to judge the abnormal state of the working line. If the judgment result is that the working line has a line abnormality, the reciprocal of the target splitting ratio is determined as the updated target splitting ratio.

[0072] Optionally, in the above-mentioned optical protection device, the control module also includes a communication component, wherein the communication component is used to report the target splitting ratio, the first length, the second length, the first optical output power, the second optical output power and the abnormal status to the optical fiber communication system; the communication component is also used to receive configuration requirement information issued by a network device associated with the optical fiber communication system, and adjust and update the target splitting ratio according to the configuration requirement information.

[0073] The communication components may be encapsulated in a communication module. The network devices may include routers, switches, gateways, optical line terminals (OLTs), optical network units (ONUs), etc. The configuration requirement information may be configured according to actual conditions, and the configuration requirement information may include optical power thresholds, splitting ratio settings, fault switching strategies, communication protocol parameters, security configurations, etc. The configuration requirement information may be used to adjust the target splitting ratio.

[0074] In an exemplary application scenario, Figure 4As shown, the above-mentioned communication components are encapsulated in a communication module, and the communication components in the communication module are used to report the configuration and performance information (such as the target splitting ratio, the first length, the second length, the first optical output power, the second optical output power and the abnormal state) to the optical fiber communication system. The communication components in the communication module are used to receive the configuration requirement information sent by the network equipment associated with the optical fiber communication system, analyze the configuration requirement information, determine the target splitting ratio adjustment information, and use the target splitting ratio adjustment information to adjust and update the target splitting ratio.

[0075] It should be noted that, in an optional embodiment, the control module may further include a periodic detection component, which is used to detect the status of the working line and the protection line according to a preset period. If the detection result shows that the working line is in an abnormal state, the target splitting ratio is adjusted using the splitter splitting ratio control module. If the detection result shows that the protection line is in an abnormal state, the abnormal information of the protection line is reported to the optical fiber communication system using the communication component. In another optional embodiment, the periodic detection component may also be used to report the optical power of the first branch signal and the optical power of the second branch signal output by the splitter to a network device associated with the optical fiber communication system. If the optical power of the first branch signal and / or the optical power of the second branch signal is abnormal, an alarm message is sent to the network device associated with the optical fiber communication system.

[0076] It is easy to understand that through the above-mentioned optical protection device, in the embodiment of the present application, the control module is used to monitor and determine the status of the working line and the protection line in real time, and the line fault can be responded to quickly, thereby improving the timeliness of the optical fiber line protection method; in the embodiment of the present application, the control module can be used to adaptively adjust the target splitting ratio according to the status of the working line and the protection line, thereby reducing energy consumption while ensuring the normal operation of the optical fiber communication system and ensuring the continuity and stability of communication; in addition, in the embodiment of the present application, the communication component is used to report the configuration and performance information, and the line status can be displayed to relevant personnel in a timely manner, and the line can be maintained. The target splitting ratio can also be adjusted and updated according to the configuration requirement information issued, thereby improving the flexibility of the optical fiber line protection method.

[0077] Optionally, the above-mentioned optical protection device also includes a comparison circuit module, which is connected to the working line and the protection line; the comparison circuit module is used to trigger the switching mechanism of the control module when the ratio of the optical power of the protection line to the optical power of the working line is less than a preset threshold, so that the transmission line of the optical signal is switched to the protection line.

[0078] The above preset threshold value can be set according to actual conditions. The above switching mechanism can be used to switch the transmission line of the optical signal.

[0079] In an exemplary application scenario, Figure 1 As shown, the comparison circuit module is connected to the working line, and the comparison circuit module is connected to the protection line. A preset threshold is set in the comparison circuit module. The comparison circuit module is used to determine whether the ratio of the optical power of the protection line to the optical power of the working line is less than the preset threshold. If the comparison circuit module determines that the ratio of the optical power of the protection line to the optical power of the working line is less than the preset threshold, the switching mechanism of the control module is triggered, and the control module is used to set the protection line as the transmission line of the optical signal.

[0080] It is easy to understand that through the above-mentioned optical protection device, in the embodiment of the present application, the comparison circuit module is used to monitor in real time the ratio of the optical power of the protection line to the optical power of the working line, so that the abnormal state of the line can be detected in time, and the transmission line can be automatically switched when the working line is in an abnormal state, thereby improving the response speed of the optical fiber line protection method.

[0081] In an exemplary application scenario, Figure 5 is a flow chart of an optional control module function according to an embodiment of the present application, such as Figure 5 As shown, the control module can be used to realize the automatic switching function (corresponding to Figure 5 Thread 1 in the passive switching function (corresponding to Figure 5 Thread 2), performance detection function (corresponding to Figure 5 Thread 3 in FIG. 1 ). The protection line is the backup line.

[0082] In thread 1, according to the detection cycle set in the control module, it is detected whether the protection line in the optical fiber communication system is in a normal state. If the protection line in the optical fiber communication system is not in a normal state, the abnormal state of the protection line is reported to the control unit of the network device. If the protection line in the optical fiber communication system is in a normal state, it is further detected whether the working line is in a normal state. If the working line in the optical fiber communication system is not in a normal state, the target splitting ratio is adjusted.

[0083] In thread 2, the control module is used to detect in real time whether the communication component has received an instruction issued by the network device control unit. If the communication component receives a target splitting ratio adjustment instruction issued by the network device control unit, the target splitting ratio is adjusted according to the target splitting ratio adjustment instruction.

[0084] In thread 3, the module light output detection function module is used to detect and obtain the first light output power of the working line and the second light output power of the protection line, determine whether the first light output power of the working line and / or the second light output power of the protection line is reduced, determine the abnormal state of the working line and / or the protection line, and report the abnormal information corresponding to the abnormal state of the working line and / or the protection line to the network device control unit.

[0085] In an exemplary application scenario, Figure 6 It is a schematic diagram of an optional optical fiber communication system according to an embodiment of the present application, and the optical fiber communication system may include a first optical transport unit (Optical Transport Unit, referred to as OTU), an optical multiplexer (Optical Multiplexer, referred to as OMU), a first optical protection (Optical Protector, referred to as OP) module, a second optical protection module, an optical signal distribution management unit (Optical Distribution Unit, referred to as ODU) and a second optical transmission unit. The first optical transmission unit is denoted as OTU1, the first optical protection module is denoted as OP1, the second optical protection module is denoted as OP2, the second optical transmission unit is denoted as OTU2, the signal power on the working line is denoted as P1, and the signal power on the protection line is denoted as P2.

[0086] Still in the above application scenario, the method for configuring the target splitting ratio is as follows: determine the output power P1 of the working line according to the received power and line attenuation of OTU2, determine the required protection line power P2 according to the optical fiber length of the working line, determine P1:P2 as the target splitting ratio of the splitter in OP1, add the splitter attenuation of P1, P2, OP1, OMU attenuation and optical fiber connector attenuation to obtain the output power of OUT1.

[0087] Still in the above application scenario, the control module of OP1 can report the actual optical output power of the working line and the protection line to the network control unit, and the network control unit adjusts the output power of OTU1 according to the actual optical output power of the working line and the protection line.

[0088] Still in the above application scenario, OP1 can also be used to detect the status of the working line and the protection line, and use P2 to determine the status of the protection line. If the protection line in the optical fiber communication system is in an abnormal state, the abnormal information corresponding to the abnormal state of the protection line is reported to the optical fiber communication system, and P1 is used to determine the status of the working line. If the line is in an abnormal state, the switching mechanism of the control module is triggered, so that the transmission line of the optical signal is switched to the protection line. OP2 at the receiving end can detect the optical power received by the working line and the optical power received by the protection line in real time. If P2:P1 is greater than a reasonable threshold, the target splitting ratio of OP1 is adjusted.

[0089] In another exemplary application scenario, Figure 7 is a schematic diagram of an optional optical multiplex section protection system according to an embodiment of the present application. The optical multiplex section protection system can be based on Figure 6 Specifically, the optical multiplex section protection system can be implemented by Figure 6 This is achieved by connecting multiple optical amplifier (OA) units between OP1 and OP2 in the optical fiber communication system. Figure 7 As shown, according to the multiple OAs connected, the optical fiber of the working line is divided into three sections of optical fiber S1, S2 and S3.

[0090] Still in the above application scenario, OP1 can be used to detect the state of the S1 segment of optical fiber. If the S1 segment of optical fiber is in an abnormal state, the control module is used to adjust the target splitting ratio of the splitter in OP1. At the same time, if OP2 detects that P2:P1 is greater than a reasonable threshold, the control module is also used to adjust the target splitting ratio of the splitter in OP1.

[0091] Still in the above application scenario, if the S2 segment of the optical fiber is in an abnormal state, or the S3 segment of the optical fiber is in an abnormal state, or the OA is abnormal, OP2 is used to detect P2:P1. If P2:P1 is greater than a reasonable threshold, the control module is used to adjust the target splitting ratio of the splitter in OP1, and the abnormal state is uploaded to the network device.

[0092] It should be noted that the above modules can be implemented by software or hardware. For the latter, it can be implemented in the following ways, but not limited to: the above modules are all located in the same processor; or the above modules are located in different processors in any combination.

[0093] Figure 8 is a hardware structure block diagram of an optional terminal device for the optical protection method according to an embodiment of the present application, such as Figure 8As shown, the terminal device may include one or more processors 102 (the processor 102 may include but is not limited to a processing device such as a microprocessor (Microcontroller Unit, referred to as MCU) or a programmable logic device (Field Programmable Gate Array, referred to as FPGA)), a memory 104 for storing data, and a transmission device 106 for communication functions. In addition, it may also include: a display device 110, an input / output device 108 (i.e., an I / O device), a Universal Serial Bus (USB) port (which may be included as one of the ports of a computer bus, not shown in the figure), a network interface (not shown in the figure), a power supply (not shown in the figure) and / or a camera (not shown in the figure). It can be understood by those skilled in the art that Figure 8 The structure shown is only for illustration and does not limit the structure of the above terminal device. Figure 8 More or fewer components as shown, or with Figure 8 Different configurations are shown.

[0094] It should be noted that the one or more processors 102 and / or other data processing circuits may be embodied in whole or in part as software, hardware, firmware or any other combination thereof. In addition, the data processing circuit may be a single independent processing module, or may be fully or partially integrated into any of the other components in the terminal device (or mobile device).

[0095] The memory 104 can be used to store software programs and modules of application software, such as the program instructions / data storage device corresponding to the light protection method in the embodiment of the present application. The processor 102 executes various functional applications and data processing by running the software programs and modules stored in the memory 104, that is, realizing the above-mentioned light protection method. The memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include a memory remotely arranged relative to the processor 102, and these remote memories may be connected to the terminal device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0096] The transmission device 106 is used to receive or send data via a network. The specific example of the above network may include a wireless network provided by a communication provider of the terminal device. In one example, the transmission device 106 includes a network adapter (Network Interface Controller, referred to as NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission device 106 can be a radio frequency (Radio Frequency, referred to as RF) module, which is used to communicate with the Internet wirelessly.

[0097] According to another aspect of an embodiment of the present application, an optical protection method is also provided, which is applied to any of the above-mentioned optical protection devices, and the optical protection method includes: allocating power to the main and backup lines in the optical fiber communication system according to the target splitting ratio; extracting echo signals from the main and backup lines; performing signal detection processing on the echo signals to obtain detection results; determining the abnormal status of the main and backup lines according to the detection results, and adjusting and updating the target splitting ratio based on the abnormal status.

[0098] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiment and its optional implementation manners, which will not be described in detail here.

[0099] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0100] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0101] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0102] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0103] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0104] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can essentially or in other words contribute to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, read-only memory (Read-Only Memory, referred to as ROM), random access memory (RandomAccess Memory, referred to as RAM), mobile hard disk, disk or optical disk and other media that can store program codes.

[0105] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A light protection device, characterized in that: include: An optical spectrometer, an echo extraction module, an echo detection module and a control module, wherein the optical spectrometer is connected to the echo extraction module, the echo extraction module is connected to the echo detection module, the echo detection module is connected to the control module, and the control module is connected to the optical spectrometer; The optical splitter is used to distribute power to the main and standby lines in the optical fiber communication system according to the target splitting ratio; The echo extraction module is used to extract the echo signal of the primary and standby lines; The echo detection module is used to perform signal detection processing on the echo signal to obtain a detection result; The control module is used to determine the abnormal state of the primary and standby lines according to the detection result, and adjust and update the target splitting ratio based on the abnormal state.

2. The light protection device according to claim 1, characterized in that: The main and standby lines include a working line and a protection line; the echo signal includes a first echo signal and a second echo signal; The echo extraction module comprises: A first extraction unit, configured to extract the first echo signal from the working line; The second extraction unit is configured to extract the second echo signal from the protection line.

3. The light protection device according to claim 2, characterized in that: The optical splitter comprises an input port, a first output port and a second output port, wherein the input port is used to receive an optical signal input by a service, the first output port is connected to the first extraction unit, and the second output port is connected to the second extraction unit; The splitter is also used to split the optical signal according to the target splitting ratio to obtain a first branch signal and a second branch signal, transmit the first branch signal to the working line through the first output port and the first extraction unit, and transmit the second branch signal to the protection line through the second output port and the second extraction unit, wherein the target splitting ratio is the ratio of the optical power of the first branch signal to the optical power of the second branch signal.

4. The light protection device according to claim 2, characterized in that: The test results include a first test result and a second test result; The echo detection module comprises: A first detection unit, configured to perform signal detection processing on the first echo signal to obtain a first detection result, wherein the first detection result includes a data conversion processing result corresponding to the first echo signal; The second detection unit is used to perform abnormality detection on the second echo signal to obtain a second detection result, wherein the second detection result includes a data conversion processing result corresponding to the second echo signal.

5. The light protection device according to claim 4, characterized in that: The first detection unit also includes: A first conversion component, used for converting the first echo signal from a power signal into a current signal; an amplifying component, used for converting the current signal into a first voltage signal; A filter component, used for filtering the first voltage signal to remove signal noise to obtain a second voltage signal; The second conversion component is used to convert the second voltage signal into an output digital signal.

6. The light protection device according to claim 4, characterized in that: The control module is also used to calculate a first length according to the first detection result, calculate a second length according to the second detection result, obtain a first optical output power of the working line, obtain a second optical output power of the protection line, and determine the abnormal states corresponding to the working line and the protection line based on the first length, the second length, the first optical output power and the second optical output power, wherein the first length is the effective optical fiber length of the working line, and the second length is the effective optical fiber length of the protection line.

7. The light protection device according to claim 6, characterized in that: The control module is further configured to determine the reciprocal of the target splitting ratio as the updated target splitting ratio when it is determined that the working line has a line abnormality according to the abnormal state.

8. The light protection device according to claim 6, characterized in that: The control module also includes a communication component, wherein: The communication component is used to report the target splitting ratio, the first length, the second length, the first optical output power, the second optical output power and the abnormal state to the optical fiber communication system; The communication component is also used to receive configuration requirement information sent by a network device associated with the optical fiber communication system, and adjust and update the target splitting ratio according to the configuration requirement information.

9. The light protection device according to claim 3, characterized in that: The optical protection device further comprises a comparison circuit module, wherein the comparison circuit module is connected to the working circuit, and the comparison circuit module is connected to the protection circuit; The comparison circuit module is used to trigger the switching mechanism of the control module when the ratio of the optical power of the protection line to the optical power of the working line is less than a preset threshold, so that the transmission line of the optical signal is switched to the protection line.

10. A light protection method, characterized in that: Applicable to the light protection device according to any one of claims 1 to 9, the light protection method comprising: Allocating power to the primary and backup lines in the optical fiber communication system according to the target splitting ratio; extracting an echo signal from the primary and standby lines; Performing signal detection processing on the echo signal to obtain a detection result; The abnormal state of the primary and standby lines is determined according to the detection result, and the target splitting ratio is adjusted and updated based on the abnormal state.

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