A Mach-Zehnder Interferometer with Low Random Phase Error

Abstract

The invention discloses a Mach-Zehnder interferometer with low random phase error. Including input waveguide area, N×2 input optical coupler, first filter mode area, phase shift area, second filter mode area, 2×M output optical coupler, output waveguide area; input waveguide area includes N input waveguides, The first mode filter area includes the first and second mode filters, the second mode filter area includes the third and fourth mode filters, the output waveguide area includes M output waveguides; N input waveguides are coupled through N×2 input light connected to the input ends of the first and second modulus filters respectively, the output ends of the first and second modulo filters are respectively connected to the input ends of the third and fourth modulo filters through the phase shift area, and the third and the second modulo filters The output ends of the four mode filters are respectively connected to M output waveguides after being passed through 2×M output optical couplers. The invention realizes the Mach-Zehnder interference structure with low random phase error.

Description

technical field [0001] The invention relates to a planar optical waveguide integrated device, in particular to a Mach-Zehnder interferometer with low random phase error. Background technique [0002] Optical communication has achieved great success in the field of long-distance communication. With the increasing development of optical communication technology, the demand for communication capacity has increased sharply. At the same time, the next generation of optical networks has put forward higher requirements for intelligence and flexibility, so that flexible and intelligent optical signal switching and routing. Specifically, on each optical network node, optical modules such as an optical cross-connector, an optical add / add adder, and the like are the key foundations for realizing intelligence. In an intelligent optical module, an optical switch array with dozens or even hundreds of optical switch units is often included. Therefore, as the basic device unit for optica...

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Problems solved by technology

[0005] In order to solve the problems existing in the background technology, the object of the present invention is to provide a Mach-Zehnder interferometer with low random phase error, which solves the serious random phase error problem existing in the traditional Mach-Zehnder interferometer, and is helpful for realizing high performance. Key components such as optical switches and large-scale arrays are of great value

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