1×4光子晶体波导分束器的特性

徐旭明; 李 未; 缪路平; 高力军

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1×4光子晶体波导分束器的特性

论文 | 更新时间：2020-08-12

- 1×4光子晶体波导分束器的特性
- The Properties of a 1×4 Optional Power Splitter Made of Photonic Crystal Waveguide
- 发光学报 2009年30卷第1期页码：31-34
- 作者机构：
  
  南昌大学理学院,江西南昌,330031
- 作者简介：
- 基金信息：
- DOI：
  中图分类号： O431
- 纸质出版日期：2009-2-20，
  
  网络出版日期：2009-2-20，
  
  收稿日期：2008-10-25，
  
  修回日期：1900-1-2，
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徐旭明, 李未, 缪路平, 等. 1×4光子晶体波导分束器的特性[J]. 发光学报, 2009,30(1):31-34.

XU Xu-ming, LI Wei, MIAO Lu-ping, et al. The Properties of a 1×4 Optional Power Splitter Made of Photonic Crystal Waveguide[J]. Chinese Journal of Luminescence, 2009,30(1):31-34.
徐旭明, 李未, 缪路平, 等. 1×4光子晶体波导分束器的特性[J]. 发光学报, 2009,30(1):31-34. DOI：

XU Xu-ming, LI Wei, MIAO Lu-ping, et al. The Properties of a 1×4 Optional Power Splitter Made of Photonic Crystal Waveguide[J]. Chinese Journal of Luminescence, 2009,30(1):31-34. DOI：

摘要

在完整的二维光子晶体中引入线缺陷

形成了光子晶体波导

光子晶体波导分束器是集成化光学电路的重要组成元件。我们设计了一种线缺陷1×4光子晶体分束器

并且用有限时域差分法研究了它的特性。研究表明

输出端的透射传输特性与入射光的波长和分支的几何形状有关

并且入射波分别相等地流入四个输出端口。为了减少1×4分束器在三个Y型分支区的反射

可以通过调节在分支区的可调介质柱的半径R

使每个输出端口具有很高的透射率。

Abstract

Photonic crystal(PC) is a new artificial material. Its unique optical properties enable it to be used in fabricating novel optical devices. Optical power splitters made of photonic crystal waveguides are believed to become essential components for compact photonic integrated circuits. It can engender photonic crystal waveguide (PCW) in the complate two-dimensional photonic crystals by introducing line defects. We designed a 1×4 optical power splitter made of linear-defect waveguides in photonic crystals

and analyzed its properties using the finite-difference time-domain method. Results showed that the transmission properties vary with wave frequency and branch geometry

and that an incident wave is divided equally into four output parts. To reduce the reflections at the three Y-branching regions in the 1×4 splitter

we can adjust the radius of the medium cylinder in the branching region

and achieve high transmission for <em>R</em>=0.13<em>a</em> at each output waveguide. We analyzed the physical origins of this performance and this kind of multi-mode interference may find potential application in PC optical circuits.

关键词

时域有限差分法光子晶体波导分束器

Keywords

finite-difference time-domain methodphotonic crystals waveguidessplitter

references

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