A Process Insensitive Modulator

Abstract

The present application provides a process-insensitive modulator, which includes a closed waveguide and a strip waveguide coupled through a coupling region. The coupling region includes a first fixed-width waveguide segment, a second fixed-width waveguide segment, a third fixed-width waveguide segment, a Four fixed-width waveguide sections, the first tapered-width waveguide section, and the second tapered-width waveguide section; the first fixed-width waveguide section, the first tapered-width waveguide section symmetrically arranged on both sides of the first fixed-width waveguide section, and the symmetrically arranged on the second waveguide section The second fixed-width waveguide section on both sides of a tapered-width waveguide section is arranged in the closed waveguide in the coupling region; the third fixed-width waveguide section, the second tapered-width waveguide section symmetrically arranged on both sides of the third fixed-width waveguide section, The fourth fixed-width waveguide section symmetrically arranged on both sides of the second tapered-width waveguide section is arranged in the strip waveguide in the coupling region. Reduce the influence of the distance between the closed waveguide and the strip waveguide on the coupling coefficient, and solve the problem that the performance of the modulator is greatly affected by the manufacturing process.

Description

technical field [0001] This application relates to a modulator, in particular to its structure and application. Background technique [0002] The statements in this section merely provide background technical information related to the disclosure of this application, and do not necessarily constitute prior art. [0003] Optical fiber communication has experienced a technological development process from scratch, from low speed and low bandwidth to high speed and high bandwidth, and has become the most important communication method in the current society. Optical fiber communication technology involves various aspects such as lasers, repeaters, transceivers, and optical fibers. The characteristics of the basic materials used in each component restrict the development of optical communication technology to a more advanced level. In the past few decades, the leading material for the development of the electronics industry has been silicon, and the research and development of ...

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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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