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Method and device for monitoring submarine cable system

A submarine cable system and light detection technology, applied in the field of communication, can solve problems such as unfavorable detection, big data space and time, and system complexity, and achieve the effect of solving sampling data alignment, improving performance, and saving data space and time

Active Publication Date: 2010-06-09
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] At the receiving end, due to the need to align and superimpose the data, a large amount of sampled data causes the complexity of the system
Moreover, the overlay buffering of a large number of sampled data requires a large amount of data space and time.
[0011] Wavelength adjustment of DBR lasers takes time, so it is not good for detection

Method used

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  • Method and device for monitoring submarine cable system
  • Method and device for monitoring submarine cable system
  • Method and device for monitoring submarine cable system

Examples

Experimental program
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Effect test

Embodiment 1

[0044] see figure 2 , the embodiment of the present invention provides a method for monitoring a submarine cable system. This method uses parallel multi-wavelength monitoring, and uses a single light source as the probe light and local coherent light, where the probe light can generate optical signals of different frequencies and send them out together, and then the returned optical signals of the probe light signals of different frequencies Coherent with the local coherent light respectively to obtain the monitoring results. The method includes:

[0045] 101: The optical signal transmitted from the light source to the transmission link of the submarine cable system is divided into two channels, one of which is directly used as local coherent light, and the other optical signal is subjected to multiple frequency shifts as multiple channels of different frequency detection light signal.

[0046] Among them, an acousto-optic modulation device can be used to perform multiple ...

Embodiment 2

[0055] see Figure 4 , the invention provides another method for monitoring the submarine cable system. The method monitors by outputting multiple wavelengths in parallel, using a single light source as the probe light and local coherent light, where the probe light can generate optical signals of different frequencies and send them out together, and then return the returned optical signals of the probe light signals of different frequencies Perform coherence with local coherent light to obtain monitoring results. The method specifically includes:

[0056] 201: The optical signal transmitted from the light source to the transmission link of the submarine cable system is divided into two channels, one of which is directly used as local coherent light, and the other optical signal is subjected to multiple frequency shifts as multiple channels of different frequency detection light signal.

[0057] 202: Modulate the detection light signals of different frequencies obtained thr...

Embodiment 3

[0070] see Figure 5 , the embodiment of the present invention provides a device for monitoring a submarine cable system, the device includes: a light source 501, a multi-channel frequency shift module 502, and a coherence module 503;

[0071] The light source 501 is used to transmit optical signals and divide the optical signals transmitted to the transmission link of the submarine cable system into two channels, one optical signal is used as local coherent light, and the other optical signal passes through the multi-channel frequency shift module as detection light signal.

[0072] The multi-channel frequency shift module 502 is configured to divide the optical signal emitted by the light source 501 into multiple optical signals of different frequencies.

[0073] Among them, an acousto-optic modulation device can be used to perform multiple frequency shifts on the optical signal.

[0074] Among them, the optical signal is divided into different frequencies as the detection...

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Abstract

The invention discloses a method and device for monitoring a submarine cable system, belonging to the communication field. The method comprises the following steps: dividing the light signals emitted by a light source to a transmission link of the submarine cable system into two channels; and ensuring the returned light signals in the multichannel detected light signals with different frequenciesto be coherent with the local coherent light to obtain the monitoring result, wherein one channel of light signals serve as the local coherent light and the other channel of light signals serve as the multichannel detected light signals with different frequencies after undergoing multichannel frequency shift. The device comprises a light source, a multichannel frequency shift module and a coherent module. By parallel emitting the detected signals, the method and device of the invention improve the monitoring performance, greatly shorten the detection time, have no blind monitoring areas, solve the problem of sample data alignment, save data space and time for mass data to stack and cache and reduce the light power spectrum density and the nonlinear effects of the detected light signals.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and device for monitoring a submarine cable system. Background technique [0002] With the rapid development of information technology, the submarine cable network has covered all major sea areas around the world and has become an important communication network carrying important international communication services. In order to ensure the smooth progress of communication services, it is of great significance to monitor the submarine cable system. Due to its particularity, the submarine cable optical fiber communication system sometimes requires online testing, that is, direct online monitoring without interrupting the business. Therefore, different loop structures are used for the monitoring of the submarine cable system, and a special test loop is used for feedback monitoring. Signal. [0003] At present, the principle of monitoring the submarine cable system is mainly to ...

Claims

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Application Information

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IPC IPC(8): H04B10/08H04B3/46
CPCH04B10/079G01M11/3127
Inventor 刘磊张光勇冯志勇
Owner HUAWEI TECH CO LTD
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