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Waveguide layout optimization method of optical switching structure supporting multicast/broadcast

A technology of layout optimization and optical switching, applied in the field of communication, can solve the problems of short time consumption and the inability to realize automation of waveguide layout, and achieve the effect of short time consumption, easy for designers to use, and high degree of efficiency.

Active Publication Date: 2020-02-11
XIDIAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects in the above-mentioned prior art, and propose a waveguide layout optimization method for optimizing the optical switching structure supporting multicast / broadcasting with short time consumption, which is used to solve the problem that the existing waveguide layout cannot be automated

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  • Waveguide layout optimization method of optical switching structure supporting multicast/broadcast
  • Waveguide layout optimization method of optical switching structure supporting multicast/broadcast
  • Waveguide layout optimization method of optical switching structure supporting multicast/broadcast

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Embodiment 1

[0024] With the rapid development of the big data era, the amount of data is becoming larger and larger, and people's requirements for data transmission are getting higher and higher. Low energy consumption, low latency, and high bandwidth have become new requirements for data transmission. As an emerging switching technology, optical switching uses light as a data carrier and becomes a new generation of efficient transmission technology. Among them, optical switching chips that support multicast / broadcast are widely used in data-intensive scenarios, such as data centers and high-performance computing clusters. However, due to the need to support more data, the optical switching chip supporting multicast / broadcasting tends to have a more complex structure than the optical switching chip supporting unicast, and the structural details show that the waveguide crossover is greatly increased. The waveguide crossover will greatly affect the quality of the optical signal, so the wav...

Embodiment 2

[0035] The waveguide layout optimization method of the optical switching structure that supports multicast / broadcasting is the same as embodiment 1, described in step (2) setting up a mathematical model in a two-dimensional orthogonal coordinate system, including the following steps:

[0036] (2a) Define the mathematical model variables: define the number of ports of the waveguide-based optical switching structure to be optimized as N, N is a positive integer greater than 1, define the longitudinal interval of the switching unit associated with the input / output port as T, and T is greater than 2 is a positive integer, and the longitudinal interval T of the switching unit related to the input / output port is a positive integer greater than 2. Compared with the case where T is 1 or 2, T being a positive integer greater than 2 can ensure that there is a sufficient gap between the waveguides , for the convenience of reading and actual chip manufacturing, define the longitudinal offs...

Embodiment 3

[0043] The waveguide layout optimization method of the optical switching structure that supports multicast / broadcasting is the same as embodiment 1-2, step (3) described before solution space search to mathematical model preprocessing, comprises the following steps:

[0044] (3a) Define the mathematical model variables: define the number of ports of the waveguide-based optical switching structure to be optimized as N, N is a positive integer greater than 1, define the longitudinal interval of the switching unit associated with the input / output port as T, and T is greater than 2 is a positive integer, and the longitudinal interval T of the switching unit related to the input / output port is a positive integer greater than 2. Compared with the case where T is 1 or 2, T being a positive integer greater than 2 can ensure that there is a sufficient gap between the waveguides , for the convenience of reading and actual chip manufacturing, define the longitudinal offset of the switchin...

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Abstract

The invention discloses a waveguide layout optimization method of an optical switching structure supporting multicast / broadcast, and mainly solves the problem that the existing waveguide layout optimization consumes long time. The method comprises the following steps: determining the number of ports of a to-be-optimized optical switching structure; establishing a mathematical model in a two-dimensional orthogonal coordinate system; preprocessing the mathematical model before searching the solution space; performing searching by using a heuristic algorithm to obtain an optimal solution; and drawing the optimized waveguide layout. According to the method, an abstracted mathematical model is preprocessed before solution space search; the waveguide layout optimization problem can be solved byusing a heuristic algorithm, automation of waveguide layout optimization of the optical switching structure supporting multicast / broadcast is realized, the waveguide layout optimization time is greatly shortened, and the method can be used for waveguide layout optimization of a high-order optical switching structure supporting multicast / broadcast.

Description

technical field [0001] The invention belongs to the technical field of communication, and relates to a waveguide layout optimization, in particular to a waveguide layout optimization method of an optical switching structure supporting multicast / broadcasting, which can be used for waveguide layout of a high-order optical switching structure supporting multicast / broadcasting optimization. Background technique [0002] Whether it is in a data center network or a high-performance computing cluster, optical switching chips that support multicast / broadcast are very important. However, due to the need to support multicast / broadcast, in the case of the same number of ports, compared with unicast optical switch chips, the structure of optical switch chips supporting multicast / broadcast is often more complex, so that the number of waveguide crossings is greatly increased. In order to solve the problem of waveguide crossing, Qixiang Cheng of Bergman group reduced the number of wavegui...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q11/00
CPCH04Q11/0005H04Q2011/0047
Inventor 顾华玺张景尧杨银堂王琨王康李磊
Owner XIDIAN UNIV
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