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

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...

AI Technical Summary

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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