Multi-granular optical cross connection device for core nodes in optical burst switching network

Abstract

The invention relates to a multi-granular optical cross connection device for core nodes in an optical burst switching network, comprising a plurality of first optical fibers and second optical fibers for transferring light-wave signals, a control wavelength division lower-insert module, an optical cross connection matrix, a waveband cross connection matrix, a wavelength cross connection matrix, a conversion pool and an energy-controlling module, wherein the optical fibers are connected with the optical cross connection matrix by the control wavelength division lower-insert module which is connected with the control module; a waveband multiplexer / a demultiplexer of the optical cross connection matrix is connected with the wavelength cross connection matrix; the waveband cross connection matrix is connected with the wavelength cross connection matrix through the waveband multiplexer / the demultiplexer; the wavelength cross connection matrix is connected with the conversion pool; and theconversion pool comprises a forward direction converting unit and a reverse direction converting unit. The invention has the advantage of strong jamming elimination capacity, support of dual-direction transmission and more excellent performance.

Description

technical field [0001] The invention belongs to the field of optical burst switching (Optical Burst Switching, OBS) network, especially the core node structure in the OBS network. Specifically, it relates to a multi-granularity optical cross-connect (Multi-granularity Optical Cross Connect, MG-OXC) device used in a core node of an OBS network. technical background [0002] The rapid growth of data traffic and the substantial improvement of optical fiber transmission capacity have put forward higher requirements for the switching structure and switching technology in the optical network, so the multi-granularity optical switching (MG-OXC) technology has emerged as the times require. Whether viewed from a technical point of view or an operator's point of view, the multi-granularity optical switching (MG-OXC) technology can meet the needs of network development. Under the dual drive of technology and market, multi-granularity switching (MG-OXC) technology has gradually become ...

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Problems solved by technology

[0009] The prior art closest to the present invention is a multi-granularity optical switching structure supporting burst granularity using a serial structure (Huang Sheng, Long Keping, Yang Xiaolong, etc., Research on multi-granular optical switching structure supporting burst granularity, Chongqing Post and Telecommunications University Journal (Natural Science Edition), 19(1), 2007), however, this structure can only transmit in one direction, and two sets of cross-connection structures are needed to achieve two-way transmission, so there is a large cost when using this structure to build an OBS network shortcoming

In addition, this structure does not have wavelength conversion capability, so it has a large congestion rate and poor overall performance

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