一种新型高透射率高品质因子光子晶体耦合腔波导结构

刘杰; 沈宏君; 吕冬妮

doi:10.3788/fgxb20143507.0872

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一种新型高透射率高品质因子光子晶体耦合腔波导结构

发光学应用及交叉前沿 | 更新时间：2020-08-12

- 一种新型高透射率高品质因子光子晶体耦合腔波导结构
- A Novel Photonic Crystal Coupled Cavity Waveguide with High Q Factor and Transmission Efficiency
- 发光学报 2014年35卷第7期页码：872-877
- 作者机构：
  
  宁夏大学物理电气信息学院,宁夏银川,750021
- 作者简介：
- 基金信息：
  
  国家自然科学基金（61167002）资助项目()
- DOI：10.3788/fgxb20143507.0872
  中图分类号： O431.1
- 收稿日期：2014-03-10，
  
  修回日期：2014-04-18，
  
  网络出版日期：2014-05-09，
  
  纸质出版日期：2014-07-03
- 稿件说明：
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刘杰, 沈宏君, 吕冬妮. 一种新型高透射率高品质因子光子晶体耦合腔波导结构[J]. 发光学报, 2014,35(7): 872-877

LIU Jie, SHEN Hong-jun, LYU Dong-ni. A Novel Photonic Crystal Coupled Cavity Waveguide with High <em>Q</em> Factor and Transmission Efficiency[J]. Chinese Journal of Luminescence, 2014,35(7): 872-877
刘杰, 沈宏君, 吕冬妮. 一种新型高透射率高品质因子光子晶体耦合腔波导结构[J]. 发光学报, 2014,35(7): 872-877 DOI： 10.3788/fgxb20143507.0872.

LIU Jie, SHEN Hong-jun, LYU Dong-ni. A Novel Photonic Crystal Coupled Cavity Waveguide with High <em>Q</em> Factor and Transmission Efficiency[J]. Chinese Journal of Luminescence, 2014,35(7): 872-877 DOI： 10.3788/fgxb20143507.0872.

摘要

提出了一种在二维三角晶格光子晶体线缺陷波导中放置椭圆空气孔的耦合腔波导结构。基于平面波展开法，利用MPB对线缺陷波导的能带结构进行了计算并给出能带图。基于时域有限差分法（FDTD），利用MEEP对椭圆空气孔在波导中的排列方式、数量、尺寸进行优化设计，并对频率位于微腔共振频率处的光波在耦合腔波导结构中的品质因子和传输特性进行研究与比较，给出了电场分布图。仿真结果表明，当椭圆空气孔的长轴方向纵向排列时，相应的微腔共振频率在光子禁带内可获得90%以上的透射率，对应的品质因子

可达10

量级；选择合适的参数，获得的

可高达10

量级，对应共振频率的透射率仍在60%以上。

Abstract

A novel coupled-cavity waveguide based on two-dimensional triangular lattice photonic crystals was proposed. This structure was composed of the line-defect waveguides

resonant micro- cavity

and ellipse-holes which are located between line-defect waveguide and resonant micro-cavity. The band structure of line-defect waveguide was simulated by the method of the plane-wave expansion. The transmission characteristics and quality factor of the coupled-cavity waveguides were investigated by the finite-difference time-domain (FDTD) method. By optimizing the structural parameters such as amount

size

and arrangement of ellipse-holes between the resonant micro-cavity and the line-defect waveguide

a 90% transmission efficiency was obtained with a

-factor of 10

. Then

appropriate parameters were selected

a high

-factor of 10

was achieved

the transmission efficiency corresponding to the resonance frequency was still above 60%.

关键词

Keywords

references

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