Fast dynamic configurable optical grouping caching device in full optical network

An all-optical network and optical packet technology, which is applied in the field of optical cross-connect nodes, optical packet buffers, buffers and time slot switching structures, can solve the problems of optical buffer recognition and wide application, and achieve flexible and variable buffer granularity, Effects of small physical size, reduced design and control costs

Inactive Publication Date: 2009-01-14
SHANGHAI JIAO TONG UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The proposed optical buffer structure has its own advantages and disadvantages, but no optical buffer has been recognized and widely used in academia and industry

Method used

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  • Fast dynamic configurable optical grouping caching device in full optical network
  • Fast dynamic configurable optical grouping caching device in full optical network
  • Fast dynamic configurable optical grouping caching device in full optical network

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Embodiment Construction

[0023] In order to better understand the technical solution of the present invention, the implementation manner will be further described below in conjunction with the accompanying drawings.

[0024] figure 1 A schematic structural diagram of the fast and dynamically configurable optical packet buffer in the all-optical network proposed by the present invention is given. The structure is composed of M Sagnac interference rings 1 , M coils of fiber delay lines 3 , and a 2×2 fast optical switch 2 . The 2×2 fast optical switch 2 can use a LiNbO3 optical switch (E.J. Murphy, T.O. Murphy, “16×16 strictly nonblocking guided-wave optical switching system,” Journal of Lightwave Technology, 1996, 14, 352-358). M Sagnac interference rings 1 with "reflection-transmission" function and M-column fiber delay lines 3 are welded and connected in series at intervals, and the optical fibers at both ends are fused with the input and output ends of a 2×2 fast optical switch 2 to form a large ca...

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Abstract

The invention relates to an all-optical network quick-dynamic configurable optical packet buffer. M Sagnac interference rings with reflex-transmission functions and M optical fiber delay lines are mutually by interval welded and connected in series; the optical fibers at the head and tail ends are welded with an input end and an output end of a 2 times 2 quick optical switch to form a buffer fiber ring. The other couple of the input end and output end of the 2 multiplied by 2 quick optical switch are adopted as the input and output ends of optical packet signals. The optical buffer of the invention enhances the re-cycle optical fiber buffering capability and provides the diverse buffer path options by embedding the Sagnac interference rings and optical fiber delay lines by interval on the basis of the existing re-cycle optical fiber ring of the traditional 2 multiplied by 2 quick optical switch so as to realize the time-slot exchanging for a plurality of optical packets and the quick-dynamic configuration of buffering time while supplying a plurality of optical packets. The invention has the advantages that the optical buffering time dynamic scope is wide; the reconfiguration time is short; the physical volume is small; the power cost is low and the potential expansibility is high, etc.

Description

technical field [0001] The invention relates to an optical packet buffer in an all-optical network, in particular to a fast and dynamically configurable optical packet buffer and time slot switching structure, which is suitable for an optical cross-connect node in an all-optical network. It belongs to the technical field of optical communication. Background technique [0002] An all-optical packet switching (OPS) network is widely considered to be the development goal of the next generation optical network because of its fine-grained bandwidth allocation and ultra-high-speed switching capabilities. It has high network throughput, rich network routing functions and excellent flexibility. In order to achieve these performance goals, an all-optical cache device with strong practicability, high cost performance and good scalability is essential. It can be used at least in packet synchronization, contention resolution, packet switching, and traffic shaping. [0003] At present...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/26H04B10/12H04J14/02G02F1/35
Inventor 朱敏肖石林义理林郭薇陈荷
Owner SHANGHAI JIAO TONG UNIV
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