Optical Interconnection Structure and Communication Method of Data Center Based on Mesh Topology

Abstract

The invention discloses a data center optical interconnection structure and communication method based on the grid-type topology structure, which consists of two cabinet groups, each cabinet group comprises several cabinets, each of which is composed of an array waveguide grating with N*N and N servers, the server and the array waveguide grating are connected by a fiber ring device, and the two-layer cabinet groups are connected by an optical fiber ring device and / or an interlayer interconnection structure. The data center optical interconnection structure and communication method based on thegrid-type topology structure utilizes the two-way interconnected characteristics of the array waveguide grating and the routing assignment characteristic, which can increase the number of links, thereliability and scale of the system, reduce the number of the array waveguide gratings passing through the data interconnection, thus effectively avoiding the problem of crosstalk and filtering.

Description

technical field [0001] The invention belongs to the field of internal communication research of a data center, and in particular relates to an optical interconnection structure and a communication method of a data center based on a grid topology structure. Background technique [0002] With the increase of emerging Internet services, there are new requirements for data storage and processing, and the scale and number of data centers have surged, which puts forward higher requirements for the data exchange capacity of each data center. At present, in large data centers, electrical switches are still mostly used to complete data exchange, but cables are used to connect electrical switches, and the heat dissipation of cables causes high power consumption in the data center. In addition, complicated cable distribution is not conducive to system maintenance and upgrades. [0003] Optical communication technology has the advantages of high bandwidth and low power consumption, and...

AI Technical Summary

Problems solved by technology

Arrayed waveguide gratings have good routing characteristics and are widely used in the field of optical communications. At present, some studies have proposed to establish an optical interconnection structure in data centers based on arrayed waveguide gratings. However, due to the insertion loss and crosstalk caused by the device itself As well as filtering and other issues, the signal has to consider the signal-to-noise ratio after passing through multiple arrayed waveguide gratings. Therefore, various compensation methods need to be added, which greatly increases the system cost and limits the system scale.

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