Method and system capable of realizing multidirectional reconfigurable optical add-drop multiplexing

Abstract

The invention provides a method and a system capable of realizing multidirectional reconfigurable optical add-drop multiplexing, wherein, the system comprises N optical preamplifiers (OPA), N demultiplexing units and M optical crossbar switches. The method comprises the following steps: respectively amplifying and demultiplexing optical signals from N directions, dividing the optical signals of each direction into M groups of the optical signals with different wavelengths, and transferring N groups of the demultiplexed optical signals with the same wavelength from different directions into thesame optical crossbar switch; wherein, each optical crossbar switch receives N groups of the optical signals with the same wavelength and outputs the input optical signals from corresponding output interfaces according to configuration information, wherein, M and N are positive integers. The invention has the advantages of simple design method and strong realizability of device; the number of input / output ports of the optical crossbar switches can be flexibly selected; and the invention has obvious cost advantage in the case of more line directions.

Description

technical field [0001] The present invention relates to reconfigurable optical add-drop multiplexing (Reconfigurable Optical Add-Drop Multiplexer, ROADM) and optical crossover technology in the field of optical communication, in particular to a method and system for realizing multi-directional reconfigurable optical add-drop multiplexing. Background technique [0002] At present, DWDM (Dense Wavelength Division Multiplexing) equipment has been widely used in backbone networks to local and metropolitan core networks. Applies to grids and meshes. The business type transitions from the circuit switching business mainly based on TDM (Time Division Multiplex) business to the data business mainly based on IP. Due to the uncertainty of business development and the increase in the difficulty of early forecasting, there are requirements for intelligent equipment. It is hoped that when the network topology and business distribution change, the business scheduling function can be quic...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method and system for realizing multi-directional reconfigurable optical add / drop multiplexing, so as to overcome the shortcomings of WSS-based multi-directional ROADM devices, which are expensive and limited to add and drop at the same wavelength

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