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Reroute method and reroute system of space division multiplexing optical network

A technology of multiplexing light and routing, applied in the field of optical communication, can solve the problems of low efficiency and long time-consuming optical path rerouting, and achieve the effect of solving the problem of long time-consuming

Active Publication Date: 2017-08-29
TSINGHUA UNIV
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Problems solved by technology

[0005] For this reason, the first object of the present invention is to propose a rerouting method for a space division multiplexing optical network, to solve the technical problems of long time-consuming and low efficiency of rerouting optical paths in the prior art

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  • Reroute method and reroute system of space division multiplexing optical network

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Embodiment Construction

[0025] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0026] In the embodiment of the present invention, in the multi-core optical fiber and few-mode optical fiber network, the network controller performs rerouting calculation to optimize crosstalk on the optical paths existing in the network, and converts the result of the rerouting calculation into the optical switch configuration of each node The rules are sent to the optical switch controllers of the nodes, and the optical switch controllers execute switching operations according to the optical switch configuration rules to compl...

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Abstract

The invention provides a reroute method and a reroute system of a space division multiplexing optical network, wherein the method comprises the steps of performing reroute calculation on an optical network through a network controller, and after a reroute path is obtained, generating an optical switch controller configuration rule of each node according to each node in the reroute path; and furthermore transmitting the configuration rule to each optical switch controller by the network controller so that the optical switch controller makes the corresponding optical switch perform optical path switching according to the configuration rule. Because the configuration rule is directly transmitted to each optical switch controller through the network controller, and transmission of related control information between the optical switch controller is not required, thereby settling technical problems of relatively long time consumption and low efficiency in optical path rerouting in prior art.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to a rerouting method and system for a space division multiplexing optical network. Background technique [0002] In the optical network communication technology, the space division multiplexing technology based on multi-core optical fiber and few-mode optical fiber is widely used in the backbone optical network to meet the rapid growth of bandwidth demand. However, in space division multiplexing technology, cumulative crosstalk becomes one of the constraints on routing and resource allocation. Specifically, when two optical signals of the same wavelength are transmitted between adjacent fiber cores or between different modes, crosstalk will occur, and the crosstalk will accumulate along the transmission path. If the accumulated crosstalk exceeds a certain value, the receiver cannot restore the original signal. Therefore, an optimization goal of routing and resource a...

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Application Information

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IPC IPC(8): H04Q11/00H04L12/24
CPCH04L41/0803H04Q11/0005H04Q11/0062H04Q2011/0041H04Q2011/0073
Inventor 华楠罗瑞杰郑小平
Owner TSINGHUA UNIV
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