Large-scale strict non-blockage light-crossing connection matrix structure and control method thereof

Abstract

The present invention provides a large-scale strictly nonblocking optical switching matrix structure and its control method. The optical switching matrix structure is a three-level symmetrical CLOS network, including an input level composed of r n*m optical switch module; a middle level composed of m r*r optical switch module; an output level composed of r m*n optical switch module, a symmetrical switching connection is between the three-level optical switching modules. The invention has advantages that the switching connection is routed configuration by large capacity connection fit for large scale optical switching; the matrix realizes the switching of N*N optical route, and when m>=2n-1, the matrix has strictly nonblocking ability, that is meeting the requirement of non error code produced by the non switching route when selecting the route, ensuring less optical switch generation switching as possible in each configuration; the invention has high efficient algorithm, accuracy and credibility, if the aim output state has N different states with the initial output states, only counting N times.

Description

technical field [0001] The invention relates to a configuration scheme and a control method of an optical cross-connect in optical communication and optical network transmission channels, in particular to a large-scale strict non-blocking optical cross-connect matrix structure and a control method thereof. Background technique [0002] With the rapid development of broadband telecommunication networks, the size of the international and domestic telecommunication markets has doubled several times, and optical fiber, as the main medium of telecommunication transmission, has been laid in every corner. However, in the telecom operation department, manual optical fiber wiring is still used to switch optical fiber routing. Manual wiring is inefficient and not suitable for large-scale routing switching. Automatic switching cannot be achieved and there is still routing congestion. Although a few telecom operators have begun to try to use optical cross-connect modules for optical fib...

AI Technical Summary

Problems solved by technology

However, in the telecom operation department, manual optical fiber wiring is still used to switch optical fiber routing. Manual wiring is inefficient and not suitable for large-scale routing switching. Automatic switching cannot be achieved and there is still routing congestion.

Although a small number of telecom operation departments have begun to try to use optical cross-connect modules for optical fiber distribution, due to technical limitations of optical cross-connect modules, it is difficult to achieve large-scale automatic optical cross-connect

Images