Design of directional coupling ultracompact multichannel beam splitters

Hu Shujuan1; Chen Shuwen1; Wu Ping1; Liao Qinghua1; Huang Yongzhen2

doi:10.13756/j.gtxyj.2009.02.004

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Design of directional coupling ultracompact multichannel beam splitters

- Design of directional coupling ultracompact multichannel beam splitters
- Study on Optical communication Issue 2, Pages: 57-60(2009)
- 作者机构：
  
  1. 南昌大学物理系
  2. 中国科学院半导体研究所
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2009.02.004
  CLC： TN252
- Published：2009，
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[1]胡淑娟,陈淑文,吴评,廖清华,黄永箴.定向耦合型超微多路光分束器的设计[J].光通信研究,2009(02):57-60.

Hu Shujuan1, Chen Shuwen1, Wu Ping1, et al. Design of directional coupling ultracompact multichannel beam splitters. [J]. (2):57-60(2009)
[1]胡淑娟,陈淑文,吴评,廖清华,黄永箴.定向耦合型超微多路光分束器的设计[J].光通信研究,2009(02):57-60. DOI： 10.13756/j.gtxyj.2009.02.004.

Hu Shujuan1, Chen Shuwen1, Wu Ping1, et al. Design of directional coupling ultracompact multichannel beam splitters. [J]. (2):57-60(2009) DOI： 10.13756/j.gtxyj.2009.02.004.

摘要

定向耦合器由多个光子晶体单模波导平行、邻近放置构成。在输入光场对称入射时

根据自映像原理数值分析了光在其中的传播行为。基于此结构

以3通道为例

设计了超微多路光分束器

仅仅通过对称地改变耦合区中两个介质柱的折射率

使光场在横向发生重新分布

实现了输出能量的均分或自由分配。这种调制方法简单且输出效率更高。

Abstract

A directional coupler is composed of multiple photonic crystal monomode waveguides placed in parallel and adjacent to each other.When the input optical field is symmetric to the incidence

its propagations in this system are numerically analyzed in accordance with the self-imaging principle.On the basis of this structure

an ultracompact multichannel

say 3-channel

beam splitter is designed and the optical field is transversely redistributed simply by symmetrically changing the refractive indexes of two dielectric rods in the coupling region

realizing the uniform or free distribution of the output energy.This kind of modulation is simple and more efficient.

关键词

光子晶体波导定向耦合器分束器能量均分

Keywords

photonic crystal waveguidedirectional couplerbeam splitteruniform energy distribution

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School of Telecommunication and Information Engineering,Nanjing University of Posts & Telecommunications

School of Optoelectronic Engineering,Nanjing University of Posts & Telecommunications

College of Science,Air Force Engineering University

Dept.of Optoelectronics Eng.,HUST

华中科技大学光电子工程系湖北武汉430074

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