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Bragg waveguide grating modulator

A waveguide grating and modulator technology, applied in the field of communications, can solve problems such as adverse effects, and achieve the effect of reducing reflected light

Active Publication Date: 2020-10-16
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention provides a Bragg waveguide grating modulator, which solves the problem that the reflected light of the existing Bragg grating modulator has adverse effects on the incident port device

Method used

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Embodiment Construction

[0020] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0021] With the advent of the information age, people's demand for high-performance data transmission is also increasing day by day. In particular, people's requirements are no longer limited to traditional call services, but more focused on voice, image and other levels of communication. Various new services have also begun to emerge in an endless stream, such a...

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Abstract

The invention discloses a Bragg waveguide grating modulator, which comprises a main waveguide, a resonant cavity waveguide and an antisymmetric directional coupler. One end of the main waveguide comprises a forward input optical port used for receiving incident light of a TE0 mode, and the other end of the main waveguide comprises a backward output optical port used for outputting output light ofthe TE0 mode; the antisymmetric directional coupler is connected with the coupling sections of the main waveguide and the resonant cavity waveguide and is used for realizing mode conversion of TE0 mode light of the main waveguide and TE1 mode light of the resonant cavity waveguide; the resonant cavity waveguide is provided with an antisymmetric grating which is used for realizing conversion of theTE1 mode light and TE0 mode light in the resonant cavity waveguide. The problem that reflected light of an existing Bragg grating modulator has adverse effects on an incident port device is solved.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a Bragg waveguide grating modulator. Background technique [0002] The modulator is an important device for signal loading in optical fiber communication. There are many types of silicon optical modulator structures, and the more commonly used structures include Mach-Zehnder modulators, microring modulators, and Bragg grating modulators. In the actual application of the Mach-Zehnder modulator, the arm length is generally greater than 2 mm and the size is large; the micro-ring modulator is prone to crosstalk between different channels; the grating of the existing Bragg grating modulator inherently reflects light, and the reflected light will affect the rest of the incident port. Devices cause adverse effects, especially the semiconductor laser light source is very sensitive to external reflected light, and the existing reflected light will have adverse effects on other devic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/27G02B6/34G02B6/124G02F1/015G02F1/025
CPCG02B6/2733G02B6/2766G02B6/34G02B6/124G02F1/015G02F1/025
Inventor 马春良施跃春陈向飞
Owner NANJING UNIV