Buffer-storage-free photo-exchanging matrix based on sharing wavelength convertor

A technology of wavelength converter and optical switching matrix, which is used in optical fiber transmission, wavelength division multiplexing system, electromagnetic wave transmission system, etc., can solve the problem of high cost, and achieve the effect of reducing cost and number

Inactive Publication Date: 2003-03-26
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

[0004] The object of the present invention is to address the deficiencies in the prior art, and propose a novel bufferless optical switch matrix based on a shared wavelength converter. This optical switch matrix structure can greatly reduce Reduce the need for all-optical wavelength converters to overcome the cost-prohibitive problems of existing optical switch matrix structures

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  • Buffer-storage-free photo-exchanging matrix based on sharing wavelength convertor
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  • Buffer-storage-free photo-exchanging matrix based on sharing wavelength convertor

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[0011] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0012] The core node of OBS network is composed of input interface, switching matrix, control module, routing calculation module and output interface. The input interface separates the control channel and the data channel in one optical fiber in space, the control channel is connected to the control module, the data channel is connected to the input port of the switching matrix, and the output of the switching matrix and the control module is connected to the output interface. When the control packet of a burst packet arrives at the core node, the scheduling of the output data wavelength channel and the operation rules of the switching matrix are determined by the control unit. The switch matrix is ​​only responsible for receiving the control instructions from the control unit and completing the operation of the specified optical devices.

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Abstract

The optical exchaning matrix of sheared wavelength converter the comprises wavelength demultiplexer, space optical switching unit, the tunable wavelength shifter, the optical switch and the optical splitter/mixer. Each input port shares one wavelength shifter. The full wavelength shifter and the optical switch based on the lithium niobate wave-guide can be tuned by the four wave mixing based on the semiconductor light amplifeir. The space optical switching unit, which is composed of the optical splitter, the optical switch and the mixer, is adopted in the invention. Based on the control information sent from the control unit in the kernel node, the optical switches in the space optical switching unit as well as the optical switches between the wavelength shifter and the output port are controlled.

Description

Technical field: [0001] The invention relates to a bufferless optical switching matrix based on a shared wavelength converter, which is used for the core node of an optical burst packet switching network, and can realize reducing the cost of the optical switching matrix by using the shared wavelength converter, and belongs to the field of optical fiber communication. Background technique: [0002] Optical Burst Switching (OBS) is a new optical switching technology emerging in recent years. It fully combines the mature electronic technology and advanced optical technology. By sending control information in advance, and performing optical / electrical conversion, processing, and reservation of bandwidth resources on the control information at each core node, the network edge nodes then transmit data, and the data can always be kept in the optical domain without packet switching The trouble of processing packet headers one by one in the network can also avoid or reduce the deman...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/25H04J14/02H04Q3/52
Inventor 于金辉范戈
Owner SHANGHAI JIAO TONG UNIV
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