Loading, detecting and monitoring method for optical associated channel signal and its realizing device

Abstract

This invention provides a loading, testing and monitoring method for optical associated signals and its device, in which, the loading method includes: A1, distributing different time slots for loaded points, A2, each loaded point sends optical identification signals at the corresponding distribution time slot, the test method includes: B1, splitting the optical signals into two paths of signals, B2, converting a path of optical signals to corresponding electric signals, B3, separating the electric signals and picking up the identification signals from them.

Description

technical field [0001] The present invention relates to a communication system optical identification signal method and its implementation device, in particular to a method for loading, detection and monitoring of an optical accompanying signal, and its implementation device. Background technique [0002] The advancement of optical devices has greatly promoted the development of optical communication. With the maturity of reconfigurable optical devices such as Wavelength Blocker (WB, Wavelength Blocker) and Wavelength Selective Switching (WSS, Wavelength Selectvie Switching), it has become possible to construct an optical transport network based on all-optical signal processing. However, due to the transparency of the optical signal, it cannot carry the associated overhead information. Without the support of on-road overhead, on the one hand, the quality of the optical signal cannot be monitored throughout the process, and corresponding processing measures cannot be taken a...

AI Technical Summary

Problems solved by technology

Although US5513029 can realize the monitoring of optical signal quality, it has several disadvantages: 1. Different wavelengths must use different frequencies for identification, and the frequency interval must be greater than the frequency resolution of the monitoring point, so the available identification signals are very limited; 2. Although the low-frequency disturbance signal has little effect on the quality of the main optical service signal, the low-frequency disturbance signal still has a certain impact on the main optical service signal; 3. The corresponding relationship between the wavelength signal and the low-frequency signal must be configured in advance, otherwise it is impossible to know which channel is being monitored wavelength optical signal; 4. This method cannot carry the associated overhead, and protection switching, other routing commands, and other indication information must be resolved in other ways

However, this method still has the following disadvantages: 1. The energy of the low-frequency signal is relatively concentrated, which still has a certain impact on the main optical service signal; 2. The correspondence between the frequency identifier and the wavelength must still be pre-configured to determine the frequency detected by the monitoring point. 3. It is unable to carry the accompanying overhead information, and the protection switching, routing and other indication information of the service optical signal still need to be solved in other ways

But so far, the existing technology still cannot solve all the above problems at the same time

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