Tunable multi-loop multi-system optical buffer based on N*N optical switch matrix

Abstract

The invention relates to the technical field of optical network communication, in particular to a tunable multi-loop multi-system optical buffer based on an N*N optical switch matrix, comprising an N*N optical switch matrix, an optical switch control module and N-1 optical delayers, wherein the delay time of the N-1 optical delayers is designed to be K times with each other, i.e. the delay time meets a K system relation; if rotation cycles of light in each loop are respective n1, n2, ..., n<N-1>, the total delay time of the buffer is T=n1d1+n2d2+...+n<N-1>d<N-1>, and the least delay time of the optical delayer can be designed by adjustable least precision according to the requirements. The adjusting speed of the optical buffer can reach nanosecond class high-speed response, the adjusting precision is high and stable, and the large dynamic adjusting range can be realized; and the optical buffer has simple structure, low cost and high reliability. The optical buffer capable of flexibly tuning in the large dynamic range has a practical meaning in optical packet switching, all-optical calculation, optical information processing and optical synchronous time slot alignment.

Description

technical field [0001] The invention relates to the technical field of optical network communication, and more specifically relates to a new optical buffer mechanism, that is, a tunable multi-loop multi-ary optical buffer based on an N*N optical switch matrix is ​​proposed. Background technique [0002] In the optical packet switching network, the optical buffering technology is the basic function of all all-optical routers, which is determined by the three main functional requirements of the router: First, due to the burst arrival of packets, when more than one packet When it arrives, some packets need to be buffered for queuing processing; secondly, in practice, it is also necessary to delay buffer the effective data part of the packet, so as to wait for the processing of the packet header to be completed; thirdly, the optical buffer for the data packet It is critical for clock synchronization and reorganization of newly formed tag heads. [0003] Theoretically, the buffe...

AI Technical Summary

Problems solved by technology

[0010] The present invention proposes a new type of multi-loop multi-ary system optical buffer based on N×N semiconductor active vertical coupler AVC (active vertical coupler) optical switch matrix. This scheme realizes a wide range of high-precision multi-loop Multi-channel tunable optical buffer, which solves the problems of many discrete devices, uncompact structure, poor stability, and difficult performance control of optical buffer based on SOA devices.

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