Highly efficient photonic crystal-based multichannel drop filters with reflection feedback

WU Bin; WANG Qing-kang

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Highly efficient photonic crystal-based multichannel drop filters with reflection feedback

更新时间：2020-08-12

- Highly efficient photonic crystal-based multichannel drop filters with reflection feedback
- Optics and Precision Engineering Vol. 15, Issue 8, Pages: 1208-1214(2007)
- 作者机构：
  
  上海交通大学微纳科学技术研究院微米/纳米加工技术国家重点实验室, 薄膜与微细技术教育部重点实验室上海,200030
- 作者简介：
- 基金信息：
- DOI：
  CLC： O734;TN713
- Received：28 September 2006，
  
  Revised：21 March 2007，
  
  Published Online：30 August 2007，
  
  Published：30 August 2007
- 稿件说明：
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WU Bin, WANG Qing-kang. Highly efficient photonic crystal-based multichannel drop filters with reflection feedback[J]. Optics and precision engineering, 2007, 15(8): 1208-1214.
DOI：

WU Bin, WANG Qing-kang. Highly efficient photonic crystal-based multichannel drop filters with reflection feedback[J]. Optics and precision engineering, 2007, 15(8): 1208-1214. DOI：

摘要

光子晶体制备的滤波器件在光通信中有巨大应用潜力

但普通的基于2D光子晶体的多分路滤波器因为抽取效率不够高

无法达到实用化的要求。本文通过给上述滤波器加入新结构

提出了性能更好的分路滤波器模型。具体的改进结构有两种:一种是在主波导末端放置一个反射微腔

另一种是在主波导两侧放置多个反射微腔。通过时域有限差分(FDTD)法对光波在这两种结构中的传播进行了模拟分析

并绘出了光波能量传播示意图。结果表明

该结构可以明显地减少光波损耗

提高抽取效率。这两种结构器件的理论抽取效率达到了60%~90%

大大高于普通结构的30%~40%的水平。这也说明了反射微腔的新颖结构对改进光子晶体滤波器的重要作用。

Abstract

Photonic crystal filters have great potential of application in optical communication but a common 2D photonic crystal-based multichannel drop filter is hard to be put into application because the drop efficiency is not high enough. In this paper

we propose two kinds of novel drop filters by putting new structure into common model. One of the novel improved configurations has reflection micro-cavities in the end of waveguide

the other has reflection micro-cavities in two sides of bus waveguide. By analyzing the propagation of light-waves in these structures with finite difference time domain(FDTD) method and giving the schematic diagram of wave propagation

it can be proved that the two novel configurations have capability to decrease the light loss and increase the drop efficiency

obviously. The drop efficiency of the novel filters can achieve 60%~90% theoretically

which is much higher than the level of common filters in drop efficiency of 30%~40%. It is also shows that reflection micro-cavities have great effect on the improvement of the photonic crystal-based filters.

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