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Multi-grain optical router based on optical burst switch

A technology of optical burst switching and router, applied in the field of optical communication, can solve problems such as uneconomical, inability to handle fine-grained switching, single switching granularity, etc., and achieve the effect of reducing packet loss rate

Inactive Publication Date: 2004-03-10
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

[0004] Wavelength-routing all-optical networks have the characteristics of mature technology, and optical burst switching has the advantage of realizing small-grained switching in the optical domain, but they also have shortcomings, such as a single switching granularity, not flexible switching methods, and mutual inconsistencies. interoperable
On the one hand, the existing dynamic wavelength-routing all-optical network cannot handle fine-grained switching; on the other hand, it is uneconomical to let the future optical burst switching network handle wavelength-routing circuit-level switching granularity

Method used

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  • Multi-grain optical router based on optical burst switch
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  • Multi-grain optical router based on optical burst switch

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Embodiment Construction

[0017] The specific implementation of the technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0018] The multi-granularity optical router based on optical burst switching of the present invention includes a core optical router 2 and an edge optical router 1 shown in FIG. 1 . Several core optical routers 2 form a core network, and edge optical routers 1 form an edge network, which is responsible for the connection between access points and the core network.

[0019] As shown in Figure 2, the core optical router mainly consists of a demultiplexer 3, a low-speed optical switch matrix 5, a high-speed optical switch matrix 6, an entrance wavelength converter 4 and an exit wavelength converter 8, a multiplexer 9, and an optical fiber delay line array 7 and exchange control circuit 10 and other parts constitute. The multi-wavelength signal of the input fiber is connected to the low-speed optical switch matrix...

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Abstract

A multi-granular light router based on optical burst exchange can support both burst-class and dynamic wavelength routing-class light exchange. Its core optical router uses dual-light-switch matrix for different exchange granularities. Its marginal optical router can support electric IP access and optical dynamic wavelength routing network access. Any input wavelength can be converted to any output wavelength, so the whole network has dynamic wavelength routing power. A mixed signalling mode is used. It is compatible with the current optical network with dynamic wavelength routing and the frture optical network with burst exchange.

Description

Technical field: [0001] The invention relates to a multi-granularity optical router, in particular to a multi-granularity optical router based on optical burst switching, which simultaneously supports burst level switching and dynamic wavelength routing level circuit switching, and belongs to the technical field of optical communication. Background technique: [0002] In recent years, with the rapid growth of the Internet and data services, the network bandwidth has been challenged. Due to the limitations of the optical / electrical and electrical / optical processing capabilities of the current network nodes and the processing speed of integrated circuits, the data processing capabilities of nodes have become Electronic bottlenecks that further widen network bandwidth. In order to solve this problem, people have proposed many methods to overcome this problem. Optical burst switching is one of them. It combines the advantages of optical circuit switching and optical packet switc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/25H04J14/02H04L12/70H04Q1/18H04Q3/52
Inventor 池灏曾庆济赵焕东
Owner SHANGHAI JIAO TONG UNIV
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