CN217693335U

CN217693335U - Signal monitoring system for signal transmission network

Info

Publication number: CN217693335U
Application number: CN202221495108.9U
Authority: CN
Inventors: 杨超见; 刘学臣; 李林峰
Original assignee: Guangzhou Sintai Communication Technology Co ltd
Current assignee: Guangzhou Sintai Communication Technology Co ltd
Priority date: 2022-06-14
Filing date: 2022-06-14
Publication date: 2022-10-28
Anticipated expiration: 2032-06-14

Abstract

The utility model discloses a signal monitoring system for a signal transmission network, which comprises a WDM wave combiner, a beam splitter and an OCM module; the WDM wave combiner is used for combining a plurality of beams of signals sent by the terminal equipment to generate a beam of combined signal and sending the combined signal to the optical splitter for optical splitting; the optical splitter is used for splitting the combined wave signal and respectively transmitting the split wave signal to the remote equipment and the OCM module; and the OCM module is used for scanning and analyzing the second sub-composite wave signal to obtain the channel number of the composite wave signal and the optical power and frequency of each channel. The utility model discloses a set up the optical splitter at the output of WDM multiplexer, will close the ripples signal and divide into two parts, partly transmit the remote-end equipment, and partly are used for the scanning analysis of signal, and then realize the control to the ripples signal that closes that the WDM multiplexer generated. The utility model discloses can realize the control to the composite wave signal that WDM multiplexer transmitted to the optical cable.

Description

Signal monitoring system for signal transmission network

Technical Field

The utility model relates to a signal monitoring especially relates to a signal monitoring system for signal transmission network.

Background

In an existing communication network, a WDM (Wavelength Division Multiplexing) combiner is generally used to combine multiple signals of a terminal device into a combined signal and transmit the combined signal to a remote device through an optical cable, and the remote device receives the combined signal, decomposes the combined signal into multiple signals through the WDM splitter, and transmits the multiple signals to another terminal device. However, when the optical cable between the WDM multiplexer and the WDM demultiplexer transmits the combined signal, it is impossible to monitor each channel and optical power of each channel in the combined signal.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a signal monitoring system for a signal transmission network, which can monitor the wave-combining signal of the wave-combining of a WDM wave-combiner.

The purpose of the utility model is realized by adopting the following technical scheme:

a signal monitoring system for a signal transmission network comprises a WDM wave combiner, an optical splitter and an OCM module; the WDM combiner is used for combining a plurality of beams of signals sent by the terminal equipment to generate a combined signal and sending the combined signal to the optical splitter for optical splitting;

the first output end of the optical splitter is connected with the remote equipment, the second output end of the optical splitter is connected with the OCM module, and the optical splitter is used for dividing the composite wave signal into a first sub composite wave signal and a second sub composite wave signal according to a preset proportion, and further transmitting the first sub composite wave signal to the remote equipment and transmitting the second sub composite wave signal to the OCM module; and the OCM module is used for scanning and analyzing the second sub-multiplex signal to obtain the channel number of the multiplex signal and the optical power and frequency of each channel.

Further, the device also comprises a channel switch; the WDM wave combiner and the optical splitter comprise a plurality of wave splitters; the input end of each WDM wave combiner is connected with the terminal equipment of the corresponding channel, and the output end is connected with the input end of the channel switch through the corresponding optical splitter; the output end of the channel selector switch is also connected with the OCM module; and the channel change-over switch is used for controlling the connection between the OCM module and the corresponding optical splitter so as to obtain a second sub-multiplex signal corresponding to the optical splitter.

Further, the channel switch is a 1 × N optical switch; wherein, N is the same as the number of the optical splitters and the number of the WDM wave-multiplexer.

Furthermore, the channel switch is electrically connected with the control board card and used for receiving a control instruction of the control board card so as to control the OCM module to be connected with the second output end of the optical splitter corresponding to the channel.

Furthermore, the OCM module is in communication connection with the control board card through a network and is used for uploading the analysis result of the second sub-multiplex signal to the control board card.

Furthermore, the first output end of the optical splitter is connected with a WDM wave splitter of the far-end device through an optical cable, and is used for transmitting the first sub-multiplexed signal to the WDM wave splitter through the optical cable, so that the WDM wave splitter decomposes the first sub-multiplexed signal into a plurality of sub-multiplexed signals and transmits the sub-multiplexed signals to the terminal device of the far-end device.

Further, the ratio of the first sub-multiplex signal to the second sub-multiplex signal satisfies the following condition: first sub-multiplex signal: second sub-multiplex signal = m: n, and m > n.

Further, the first sub-multiplex signal: second sub-multiplex signal =98:2.

compared with the prior art, the beneficial effects of the utility model reside in that:

the utility model discloses a set up the optical splitter at the output of WDM multiplexer, will close the ripples signal and divide into two parts, partly transmit the distal end equipment, partly transmit the OCM module and carry out the light analysis to the control to closing the ripples signal.

Drawings

Fig. 1 is a block diagram of a signal monitoring system for a signal transmission network according to the present invention;

fig. 2 is a block diagram of a signal monitoring system for a signal transmission network when there are a plurality of channels.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

The present invention provides a preferred embodiment, a monitoring device for optical cable wave-combining signals, as shown in fig. 1, including a WDM wave-combiner, a beam splitter, and an OCM (optical coherence microscopy) module.

The input end of the WDM wave combiner is connected with the terminal equipment and used for receiving the multiple light signals of the terminal equipment and combining the multiple light signals into a combined wave signal.

The output end of the WDM wave combiner is connected with the optical splitter and used for sending the combined wave signal to the optical splitter, so that the optical splitter decomposes the combined wave signal into a first sub-combined wave signal and a second sub-combined wave signal.

The first output end of the optical splitter is connected with the remote equipment through an optical cable, the second output end of the optical splitter is connected with the OCM module, and the optical splitter is used for transmitting the first sub-composite wave signal to the remote equipment through the optical cable and transmitting the second sub-composite wave signal to the OCM module.

And the OCM module is used for scanning and analyzing the second sub-composite wave signal to obtain the number of channels included in the composite wave signal and the frequency and the optical power of each channel, so that the composite wave signal is monitored, and the subsequent composite wave signal is processed.

The first sub-composite signal is transmitted to the remote device through the optical cable. Further, the first sub-multiplex signal is transmitted to the WDM wave splitter through the optical cable, and the WDM wave splitter decomposes the first sub-multiplex signal to generate a multi-path optical signal and transmits the multi-path optical signal to the remote device.

Preferably, the ratio of the first sub-composite signal to the second word composite signal satisfies the following relationship:

first sub-multiplex signal: second sub-multiplex signal = m: n is the same as the formula (I). Wherein m > n.

For example, the combined signal is calculated according to the following ratio of 98: the ratio of 2 is divided into a first sub-multiplex signal and a second sub-multiplex signal.

Preferably, the utility model discloses still can monitor the composite wave signal of a plurality of passageways. That is, as shown in fig. 2, the present invention includes a channel switching switch. The WDM wave-multiplexer and the optical splitter comprise a plurality of wave-splitters. The input end of each WDM wave combiner is connected with the corresponding terminal equipment, and the output end of each WDM wave combiner is connected with the optical splitter, and the WDM wave combiners are used for generating wave combining signals from the multi-beam optical signals of the terminal equipment of the corresponding channel and transmitting the wave combining signals to the optical splitter for optical splitting.

The input end of the OCM module is also connected with the optical splitter of each channel through a channel change-over switch. That is, the channel transfer switch can enable the OCM module to access the optical splitter of the corresponding channel, so as to obtain the corresponding second sub-composite signal, thereby monitoring the composite signal of the corresponding channel.

More preferably, the channel switch is further electrically connected to the control board card, and the switching of the channel switch is controlled by the control board card to realize the switching of the channels, so as to monitor the channels of the composite wave signals of the multiple channels, the channel frequency and the optical power.

Preferably, the channel switch is a 1 × N optical switch. Wherein N is the same as the number of channels. The control panel card is used for controlling the 1 XN optical switch to realize the connection of the OCM module and the optical splitter of the corresponding channel.

Preferably, the utility model discloses when monitoring the composite wave signal to a plurality of passageways, the accessible receives the instruction of host computer and selects to switch 1 XN's photoswitch to corresponding passageway, also can start 1 XN's photoswitch to next passageway through the mode that sets up the polling, for example fixed 15 minutes, 1 XN's photoswitch is automatic to next passageway.

For example, if a 1 × N optical switch is a 1 × 8 optical switch, the monitoring of the multiplexed signal of 8 channels can be realized.

Preferably, the OCM module scans and analyzes the second sub-multiplex signal of the corresponding channel after receiving the second sub-multiplex signal, and sends an analysis result to the control board card through the network, so that a maintainer can monitor the transmission of each optical cable, find abnormal conditions in time, and maintain in time.

The utility model discloses can be applied to in DCI optical transmission network, OTN optical transmission network and the wavelength division transmission network, realize monitoring the combination wave signal to the analysis reachs the data such as optical power, frequency of the channel number and every channel in the combination wave signal.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. A signal monitoring system for a signal transmission network, comprising a WDM combiner, an optical splitter and an OCM module; the WDM combiner is used for combining a plurality of beams of signals sent by the terminal equipment to generate a combined signal and sending the combined signal to the optical splitter for optical splitting;

2. The signal monitoring system for a signal transmission network according to claim 1, further comprising a channel switching switch; the WDM wave-multiplexer and the optical splitter comprise a plurality of wave-splitters; the input end of each WDM wave combiner is connected with the terminal equipment of the corresponding channel, and the output end is connected with the input end of the channel switch through the corresponding optical splitter; the output end of the channel selector switch is also connected with the OCM module; and the channel change-over switch is used for controlling the connection between the OCM module and the corresponding optical splitter so as to obtain a second sub-multiplex signal corresponding to the optical splitter.

3. The signal monitoring system for a signal transmission network of claim 2, wherein the channel switch is a 1 x N optical switch; wherein, N is the same as the number of the optical splitters and the number of the WDM wave-multiplexer.

4. The signal monitoring system for the signal transmission network according to claim 2, wherein the channel switch is further electrically connected to a control board, and is configured to receive a control instruction from the control board, so as to control the OCM module to be connected to the second output end of the optical splitter of the corresponding channel.

5. The signal monitoring system for the signal transmission network according to claim 1, wherein the OCM module is further communicatively connected to the control board card through a network, and configured to upload the analysis result of the second sub-multiplex signal to the control board card.

6. The signal monitoring system for signal transmission network of claim 1, wherein the first output terminal of the optical splitter is connected to the WDM splitter of the remote device via an optical cable, and is configured to transmit the first sub-multiplexed signal to the WDM splitter via the optical cable, so that the WDM splitter splits the first sub-multiplexed signal into a plurality of beams of the demultiplexed signals and transmits the beams of the demultiplexed signals to the terminal device of the remote device.

7. The signal monitoring system for a signal transmission network of claim 1, wherein the ratio of the first and second sub-composite signals satisfies the following condition: first sub-multiplex signal: second sub-multiplex signal = m: n, and m > n.

8. The signal monitoring system for a signal transmission network of claim 7, wherein the first sub-multiplex signal: second sub-multiplex signal =98:2.