Process-insensitive modulator

Abstract

The invention provides a process insensitive modulator which comprises a closed waveguide and a strip-shaped waveguide which are coupled through a coupling area, and the coupling area comprises a first fixed-width waveguide section, a second fixed-width waveguide section, a third fixed-width waveguide section, a fourth fixed-width waveguide section, first gradually-changing-width waveguide sections and second gradually-changing-width waveguide sections. The first fixed-width waveguide section, the first gradually-changing-width waveguide sections symmetrically arranged on the two sides of the first fixed-width waveguide section and the second fixed-width waveguide sections symmetrically arranged on the two sides of the first gradually-changing-width waveguide sections are arranged in the closed waveguide in the coupling area; the third fixed-width waveguide section, second gradually-changing-width waveguide sections symmetrically arranged on the two sides of the third fixed-width waveguide section, and fourth fixed-width waveguide sections symmetrically arranged on the two sides of the second gradually-changing-width waveguide sections are arranged in the strip-shaped waveguide in the coupling area. The influence of the interval between the closed waveguide and the strip-shaped waveguide on the coupling coefficient is reduced, and the problem that the performance of the modulator is greatly influenced by the manufacturing process is solved.

Description

Technical field [0001] The present application relates to a modulator, which specifically involves structural and application. Background technique [0002] The statement of this section is merely the background technology information disclosed in the present application, and it is not necessarily constituting the prior art. [0003] Optical fiber communication has experienced a technological development process from nothing, from low rate, low bandwidth to high rate and high bandwidth, has become the most important communication method of current society. Optical fiber communication technologies involve various aspects such as lasers, repeaters, transceivers, optical fibers, and the basic material properties used by each component constrain optical communication technology to develop more advanced levels. In the past few decades, the dominant materials in the development of electronics industry are silicon and silicon materials, and the research and development of silicon materi...

AI Technical Summary

Problems solved by technology

[0006] In some embodiments, the lengths of the first fixed-width waveguide section and the third fixed-width waveguide section are the same, and the lengths of the first fixed-width waveguide section and the third fixed-width waveguide section are adjusted synchronously to reduce the distance between the closed waveguide and the strip waveguide The influence on the coupling coefficient solves the problem that the performance of the modulator is greatly affected by the manufacturing process

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