Optical switch array chip based on digital optical phase conjugation principle

Abstract

The invention discloses an optical switch array chip based on a digital optical phase conjugation principle. A multi-mode interference device and a digital optical phase conjugation reflector are used for constituting a 1*(M1-2)*K1 third-level optical switch subsystem, then q 1*(M1-2)*K1 third-level optical switch subsystems are in series connection in the longitudinal direction to form a 1*M*K1 second-level optical switch subsystem, further, p 1*M*K1 second-level optical switch subsystems and p-1 connectors are in series connection in the transverse direction to form a 1*M*K first-level optical switch subsystem, and finally N 1*M*K first-level optical switch subsystems connected to N input optical waveguides share M output optical waveguides, and an N*M*K optical switch array is formed in a parallel connection mode. The digital optical phase conjugation principle is used in the optical switch array, non-blocking optical switching can be conducted on K different wave lengths, and the optical switch array chip based on the digital optical phase conjugation principle is particularly suitable for optical switching and optical intersecting interconnection of optical communication network nodes and also can be used for optical interconnection between chips and optical interconnection inside an optical computer.

Description

technical field [0001] The present invention relates to the technical field of optical communication and optical integration, and more specifically relates to an optical switch array chip based on the principle of digital optical phase conjugation, which is especially suitable for optical switching and optical cross-connection of optical communication network nodes, and can also be used for chip switching. Optical interconnects between rooms and optical computers. Background technique [0002] With the establishment of optical fiber backbone communication network and the development of optical amplification technology and dense wavelength division multiplexing (DWDM) technology, the bottleneck limiting the speed and capacity of optical communication network has shifted from the information transmission between network nodes to the information exchange of network nodes. At present, the information exchange of network nodes still needs to be completed in the electric domain. ...

AI Technical Summary

Problems solved by technology

Constructing such a narrow wavelength-selective optical switch would increase its length many times and make it more difficult to manufacture

Moreover, in practice, the original working wavelength will not be completely cut off after the control voltage is applied, which will lead to a significant increase in crosstalk

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