基于矩形波导色散关系的相变光开关设计

杨子航; 张桂菊; 沈为民

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基于矩形波导色散关系的相变光开关设计

光学器件与系统设计 | 更新时间：2026-01-05

- 基于矩形波导色散关系的相变光开关设计
- Design of phase change optical switch based on dispersion relation of rectangular waveguide
- 光学技术 2025年51卷第6期页码：669-674
- 作者机构：
  
  1.苏州大学光电科学与工程学院，江苏苏州 215006
  2.江苏省先进光学制造技术重点实验室&教育部现代光学技术重点实验室，江苏苏州 215006
- 作者简介：
  
  杨子航（2000— ），男，硕士研究生，从事微纳光波导器件设计。
  gjzhang@suda.edu.cn
- 基金信息：
  
  先进光学遥感技术北京市重点实验室开放基金(AORS202406)
- DOI：
  中图分类号： TN252
- 收稿：2025-05-11，
  
  修回：2025-07-22，
  
  纸质出版：2025-11-20
- 稿件说明：
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杨子航,张桂菊,沈为民.基于矩形波导色散关系的相变光开关设计[J].光学技术,2025,51(06):669-674.

YANG Zihang,ZHANG Guiju,SHEN Weimin.Design of phase change optical switch based on dispersion relation of rectangular waveguide[J].OPTICAL TECHNIQUE,2025,51(06):669-674.
杨子航,张桂菊,沈为民.基于矩形波导色散关系的相变光开关设计[J].光学技术,2025,51(06):669-674. DOI：

YANG Zihang,ZHANG Guiju,SHEN Weimin.Design of phase change optical switch based on dispersion relation of rectangular waveguide[J].OPTICAL TECHNIQUE,2025,51(06):669-674. DOI：

摘要

矩形波导是平面集成光路器件中最重要的结构单元，其色散特性影响整个器件性能。文章采用Marcatili解析法与建模法，对比求解单条形和脊形两种矩形波导结构的模有效折射率和传播常数，并针对片上波导器件的本征传输损耗进行结构优化。结果表明，一定波导宽度下，同种模式在脊形波导中有更大的有效折射率和更低的传输损耗。对一种基于脊形波导的相变型光开关单元器件进行优化设计，在工作波长为1520~1580nm范围内，获得插入损耗均小于0.07dB，TE0和TM0模传输下的消光比分别为15.73~17.70dB和15.78~17.65dB；光开关具有良好的低损耗传输特性和偏振不敏感性。研究将为求解光波导色散特性及片上集成波导器件的设计和性能优化提供可靠依据。

Abstract

Rectangular waveguides are the most important elements in planar integrated optical devices

with their dispersion characteristics greatly influencing the device performances. In this study

Marcatili analytical method and modeling method are used to calculate mode effective refractive indices and propagation constants for both stripe and ridge waveguides. A design and optimization are discussed for the intrinsic transmission loss of on-chip waveguide devices. The results show that guided modes exhibit higher effective refractive indices and lower propagation losses in ridge waveguides than those in strip waveguides. An optimization design of phase change optical switch based on ridge waveguide exhibits a low insert loss （IL） below 0.07dB

good extinction ratio of 15.73 ~17.70dB for TE0 mode and 15.78 ~ 17.65dB for TM0 mode

during the work wavelength from 1520 ~ 1580nm. Such optical switches present low transmission losses and good polarization insensitivity. The research will provide reliable basis for solving the dispersion characteristics of this simple rectangular planar geometry such as optical switch and coupler for on-chip integrated waveguide devices.

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references

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