CN112152701A

CN112152701A - Semi-active WDM wavelength division protection system

Info

Publication number: CN112152701A
Application number: CN202010906644.2A
Authority: CN
Inventors: 李文峰; 颜广生
Original assignee: Guangzhou Visint Communication Technology Co ltd
Current assignee: Guangzhou Visint Communication Technology Co ltd
Priority date: 2020-09-01
Filing date: 2020-09-01
Publication date: 2020-12-29

Abstract

The invention discloses a semi-active WDM wavelength division protection system, which comprises a backlight connector, an analog-to-digital converter, a preamplifier, an FD optical probe, an MCU control processing center, an optical switch, an optical splitter, a mini wavelength division multiplexing and demultiplexing, wherein the backlight connector is in line connection with the MCU control processing center, and the MCU control processing center is in line connection with the optical switch and the analog-to-digital converter. The semi-active WDM wavelength division protection system can perform 3% light splitting on an optical fiber line through an optical fiber beam splitter, access an FD optical probe, detect the intensity of light, calculate the optical power of the optical fiber line through a preamplifier input analog-to-digital converter and an MCU control processing center, and realize the function of monitoring the optical power in real time, thereby realizing the mutual independence of an automatic protection function and a network manager and not depending on the network manager; the semi-active WDM wavelength division protection system integrates a passive wavelength division multiplexing demultiplexing device (CCWDM), is directly converted and utilized in an optical line and has small volume.

Description

Semi-active WDM wavelength division protection system

Technical Field

The invention relates to the technical field of semi-active WDM wavelength division, in particular to a semi-active WDM wavelength division protection system.

Background

5G is used as a new generation mobile communication technology, has the characteristics of large bandwidth, low time delay, massive connection and the like, and 5G can bring revolutionary business experience to users, develop a novel business model and provide new power for continuous growth for communication operators.

With the rapid development of communication network services, in order to meet the requirements of three major service scenarios of the 5G technology, the forward technology needs to comprehensively consider various factors such as network resources, cost, technical maturity and the like, and meet the requirements of low delay and high reliability. The analysis of the prior forward technology confirms the advantages and the disadvantages of the prior art and provides a semi-active wavelength division multiplexing scheme.

The rapid development of the WDM technology and the high-speed digital signal switching technology has led to the massive application of optical transmission systems, and the optical signals need to be processed during the optical transmission process, so it is very important to improve the transmission rate while ensuring the reliability of the optical signals in the transmission system.

The main core of the semi-active WDM wavelength division protection system is a WDM circuit protection board, WDM is a technology that optical carrier signals (carrying various information) with two or more different wavelengths are combined together at a sending end through a multiplexer and are coupled to the same optical fiber of an optical line for transmission; at the receiving end, the optical carriers of the various wavelengths are separated by a demultiplexer and then further processed by an optical receiver to recover the original signal. This technique of simultaneously transmitting two or more optical signals of different wavelengths in the same optical fiber is called wavelength division multiplexing.

The WDM line protection board can flexibly configure the CWDM channel according to the requirement, and can monitor the states of the main optical link and the standby optical link in real time, switch and protect in time, ensure the transmission reliability of the service link, protect the normal operation of the system, and improve the service quality of operators.

The existing semi-active WDM depends on network management, has large volume, cannot be directly converted and utilized in an optical line, and also causes the problem of false switching caused by the jitter of the emitted optical power, so that a semi-active WDM wavelength division protection system is needed.

Disclosure of Invention

The present invention is directed to a semi-active WDM wavelength division protection system to solve the problems set forth in the background above.

In order to achieve the purpose, the invention provides the following technical scheme: a semi-active WDM wavelength division protection system comprises a backlight connector, an analog-to-digital converter, a preamplifier, an FD optical probe, an MCU control processing center, an optical switch, an optical splitter, a mini wavelength division multiplexing and demultiplexing, a COM1 adapter and a COM2 adapter, wherein the backlight connector is in line connection with the MCU control processing center, the MCU control processing center is in line connection with the optical switch and the analog-to-digital converter, the analog-to-digital converter is in line connection with the preamplifier, the optical switch is in line connection with the mini wavelength division multiplexing and demultiplexing and the optical splitter, and the optical splitter is in line connection with the COM1 adapter, the COM2 adapter and the FD optical probe.

Preferably, the optical splitters are eight, two optical splitters are in line connection with the optical switch, the COM1 adapter, the COM2 adapter and the FD optical probe, and six optical splitters are in line connection with the mini wavelength division multiplexing/demultiplexing, the T1 adapter, the R1 adapter, the T2 adapter, the R2 adapter, the T3 adapter and the R3 adapter.

Preferably, the MCU control processing center adopts an ARM architecture bit processor, and is a control processing center of a semi-active WDM wavelength division protection system.

Preferably, the optical splitter, the mini wavelength division multiplexing and demultiplexing, and the optical switch are fused, and the optical switch is a mechanical 1X2 optical switch.

Preferably, the T1 adapter, the R1 adapter, the T2 adapter, the R2 adapter, the T3 adapter, and the R3 adapter are input/output terminals for transmitting services, the COM1 adapter is an active line connection terminal, and the COM2 adapter is a standby line connection terminal.

Compared with the prior art, the invention has the beneficial effects that:

1. the semi-active WDM wavelength division protection system can perform 3% splitting on an optical fiber line through the optical fiber splitter by the aid of the splitter, the FD optical probe, the preamplifier and the analog-to-digital converter, detect light intensity, calculate optical power of the optical fiber line through the MCU control processing center by inputting the analog-to-digital converter through the preamplifier, and realize a real-time monitoring function of the optical power, so that an automatic protection function is independent of a network manager and independent of the network manager; the passive wavelength division multiplexing demultiplexer (CCWDM) is integrated in a semi-active WDM wavelength division protection system, and is directly converted and utilized in an optical line, so that the system has the advantages of small volume and economy and safety, through the COM1 adapter and the COM2 adapter, when the MCU control processing center detects that the active line COM1 adapter fails, the state of the standby line COM2 adapter is immediately detected, if the standby line COM2 adapter is normal, the MCU control processing center drives an optical switch to the standby line COM2 adapter, and the service is transferred to the standby line COM2 adapter for transmission without causing service interruption, so that line switching is carried out in a line insertion loss mode, the error switching caused by the jitter of the emitted optical power can be prevented, and the protection effect is achieved.

Drawings

FIG. 1 is a schematic block diagram of a semi-active WDM wavelength division protection system of the present invention;

fig. 2 is a schematic diagram of the application of the semi-active WDM wavelength division protection system.

In the figure: 1. backlight connector, 2, analog-to-digital converter; 3. a preamplifier; 4. an FD optical probe; 5. the MCU controls the processing center; 6. an optical switch; 7. a light splitter; 8. mini wavelength division multiplexing and demultiplexing; 9. COM1 adapters; 10. COM2 adapters; 11. a T1 adapter; 12. an R1 adapter; 13. a T2 adapter; 14. an R2 adapter; 15. a T3 adapter; 16. r3 adapter.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a semi-active WDM wavelength division protection system comprises a backlight connector 1, an analog-digital converter 2, a preamplifier 3, an FD optical probe 4, an MCU control processing center 5, an optical switch 6, a beam splitter 7, a mini wavelength division multiplexing and demultiplexing 8, a COM1 adapter 9 and a COM2 adapter 10, wherein the backlight connector 1 and the MCU control processing center 5 are in line connection, the MCU control processing center 5 adopts an ARM architecture 32-bit processor, the MCU control processing center 5 is the control processing center of the semi-active WDM wavelength division protection system, the MCU control processing center 5, the optical switch 6 and the analog-digital converter 2 are in line connection, the analog-digital converter 2 and the preamplifier 3 are in line connection, and the FD optical probe 4, the preamplifier 3 and the analog-digital converter 2 can be accessed into the FD optical probe 4 by the optical fiber splitter 7 and the beam splitter 3% in an optical fiber circuit to detect the light intensity, the optical power of an optical fiber line is calculated by the analog-digital converter 2 input by the preamplifier 3 through the MCU control processing center 5, the function of real-time monitoring of the optical power is realized, so that the automatic protection function and the network management are independent, the optical switch 6 is independent of the network management, the optical switch 6 is in line connection with the mini wavelength division multiplexing demultiplexing 8 and the optical splitter 7, a passive wavelength division multiplexing demultiplexing device 8(CCWDM) is integrated in a semi-active WDM wavelength division protection system and is directly converted and utilized in the optical line, and the optical switch 7 has the advantages of small volume and economic safety, eight optical splitters 7 are arranged, wherein two optical splitters 7 and optical switches 6, a COM1 adapter 9, a COM2 adapter 10 and an FD optical probe 4 are in line connection, wherein six optical splitters 7 and the mini wavelength division multiplexing demultiplexing 8, a T1 adapter 11, an R1 adapter 12, a T2 adapter 13, an R2 adapter 14, a T3 adapter 15 and an R3 adapter 16 are in line, an optical splitter 7, a mini wavelength division multiplexing and demultiplexing 8 and an optical switch 6 are welded, the optical switch 6 is a mechanical 1X2 optical switch, the optical splitter 7 is in line connection with a COM1 adapter 9, a COM2 adapter 10 and an FD optical probe 4, a T1 adapter 11, an R1 adapter 12, a T2 adapter 13, an R2 adapter 14, a T3 adapter 15 and an R3 adapter 16 are input and output ends for transmitting services, the COM1 adapter 9 is a main line connecting end, the COM2 adapter 10 is a standby line connecting end, when the MCU control processing center 5 detects that the main line COM1 adapter 9 fails, the state of the standby line COM2 adapter 10 is detected immediately through the COM1 adapter 9 and the COM2 adapter 10, if the standby line COM2 adapter 10 is normal, the MCU control processing center 5 drives the optical switch 6 to switch to the COM2 adapter 10, the services are transferred to the COM2 adapter 10 without causing service interruption, therefore, line switching is carried out in a line insertion loss mode, error switching caused by the jitter of the emitted light power can be prevented, and a protection effect is achieved.

Wherein, serial port communication: the single board card of the semi-active WDM wavelength division protection system needs to communicate with the network management card, and the operation information of the semi-active WDM wavelength division protection system includes: the working mode, the optical power of the optical fiber line, the states of the main and standby routes and the like, and the semi-active WDM wavelength division protection system can be remotely controlled through a network management system, and comprises the steps of switching threshold setting, line scheduling, working mode selection and the like.

Fiber preparation communication: the semi-active WDM wavelength division protection system needs to perform point-to-point communication with the opposite-end semi-active WDM wavelength division protection system, so as to realize the functions of synchronous switching of lines, exchange of optical power information of board cards at two ends and the like.

Meanwhile, a mini wavelength division multiplexing/demultiplexing (CCWDM)8 multiplexes or demultiplexes a plurality of optical signals with different wavelengths to a single optical signal with different wavelengths, and transmits the multiplexed optical signal along a plurality of optical fibers.

The following table is the technical performance index/parameter:

when the optical fiber line monitoring device is used, an optical fiber line passes through the optical splitter 7, 3% of split light is accessed into the FD optical probe 4 to detect the intensity of the light, the light is input into the analog-to-digital converter 2 through the preamplifier 3 and is calculated through the MCU control processing center 5, the optical power of the optical fiber line is realized, when the MCU control processing center 5 detects that the COM1 adapter 9 of the main line fails, the state of the COM2 adapter 10 of the standby line is detected immediately, if the COM2 adapter 10 of the standby line is normal, the MCU control processing center 5 drives the optical switch 6 and switches to the COM2 adapter 10 of the standby line, and the service is transferred to the COM2 adapter 10 of the standby line without causing service interruption.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A semi-active WDM wavelength division protection system comprises a backlight connector (1), an analog-to-digital converter (2), a preamplifier (3), an FD optical probe (4), an MCU control processing center (5), an optical switch (6), an optical splitter (7), a mini wavelength division multiplexing and demultiplexing (8), a COM1 adapter (9) and a COM2 adapter (10), and is characterized in that: the backlight connector (1) is in line connection with the MCU control processing center (5), the MCU control processing center (5) is in line connection with the optical switch (6) and the analog-to-digital converter (2), the analog-to-digital converter (2) is in line connection with the preamplifier (3), the optical switch (6) is in line connection with the mini wavelength division multiplexing and demultiplexing device (8) and the optical splitter (7), and the optical splitter (7) is in line connection with the COM1 adapter (9), the COM2 adapter (10) and the FD optical probe (4).

2. A semi-active WDM wavelength division protection system according to claim 1, wherein: the optical splitters (7) are eight, wherein two optical splitters (7), the optical switch (6), the COM1 adapter (9), the COM2 adapter (10) and the FD optical probe (4) are in line connection, and six optical splitters (7), the mini wavelength division multiplexing and demultiplexing (8), the T1 adapter (11), the R1 adapter (12), the T2 adapter (13), the R2 adapter (14), the T3 adapter (15) and the R3 adapter (16) are in line connection.

3. A semi-active WDM wavelength division protection system according to claim 1, wherein: the MCU control processing center (5) adopts an ARM architecture 32-bit processor, and the MCU control processing center (5) is a control processing center of a semi-active WDM wavelength division protection system.

4. A semi-active WDM wavelength division protection system according to claim 1, wherein: the optical splitter (7), the mini wavelength division multiplexing and demultiplexing device (8) and the optical switch (6) are welded, and the optical switch (6) is a mechanical 1X2 optical switch.

5. A semi-active WDM wavelength division protection system according to claim 2, wherein: the T1 adapter (11), the R1 adapter (12), the T2 adapter (13), the R2 adapter (14), the T3 adapter (15) and the R3 adapter (16) are input and output ends for transmitting services, the COM1 adapter (9) is a main line connecting end, and the COM2 adapter (10) is a standby line connecting end.