Reconfigurable optical add drop multiplexer

Abstract

The invention relates to the technical field of submarine communication, and provides a reconfigurable optical add-drop multiplexer, a main optical path and a backup state optical path are configured in the reconfigurable optical add-drop multiplexer, and the main optical path comprises a first trunk line and a second trunk line which are arranged between an end station A and an end station B, a first branch input line and a first branch output line are arranged between the first main line and the end station C, and a second branch input line and a second branch output line are arranged between the second main line and the end station C; and the backup state light path comprises a third main line and a fourth main line which are arranged between the end station A and the end station B. The method is suitable for the technical field of communication, and solves the problems that when a main wavelength selection switch of a reconfigurable optical add-drop multiplexer fails in the prior art, setting of a backup wavelength selection switch is tedious, switching is limited, an original service signal transmission path after backup becomes influence on normal receiving, service performance is reduced, and the service performance is influenced. And the security of information transmission is also low.

Description

technical field [0001] The present application relates to the technical field of submarine communication, and in particular, to a reconfigurable optical add-drop multiplexer. Background technique [0002] like figure 1 shown, figure 1 The dotted box in the box represents the reconfigurable optical add-drop multiplexer housing. In the prior art, two branch fiber pairs are used to support the ROADM (Reconfigurable Optical Add / Drop Multiplexer, reconfigurable optical add-drop multiplexer) node scheme, in which end station A and end station B are trunk end stations, end station C is branch end station, CPL (Coupler coupler). This solution divides the service bandwidth into three subbands, which are used to carry the communication services between end station A and end station B (the communication signal sent by end station A to end station B and the communication signal sent by end station B to end station A), The communication service between end station A and end station C...

AI Technical Summary

Problems solved by technology

[0005] The present application provides a reconfigurable optical add-drop multiplexer, which solves the problem of cumbersome switching to the backup wavelength selective switch when the main wavelength selection switch of the reconfigurable optical add-drop multiplexer in the prior art fails. After the backup, the transmission path of the original service signal becomes longer and affects the normal reception, resulting in the degradation of service performance and lower security of information transmission.

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