基于光子晶体平板传导共振模的低功率光开关

J4 ›› 2011, Vol. 28 ›› Issue (1): 73-81.

基于光子晶体平板传导共振模的低功率光开关

陈率,王春霞,刘宏伟,阚强,许兴胜,陈弘达

中国科学院半导体研究所集成光电子学国家重点实验室, 北京 100083

收稿日期:2010-03-26 修回日期:2010-05-14 出版日期:2011-01-28 发布日期:2011-01-14
通讯作者: 许兴胜副研究员，主要从事光子微结构的微加工与物理特性研究。 E-mail:xsxu@semi.ac.cn
作者简介:陈率（1985-），硕士，主要从事光子晶体传感和光开关的研究。 E-mail: chenshuai@semi.ac.cn
基金资助:
国家自然科学基金（60877030），国家863计划（2009AA03Z406）

Low power optical switch based on guided resonance of photonic crystal slab

CHEN Shuai, WANG Chun-xia, LIU Hong-wei, KAN Qiang, XU Xing-sheng , CHEN Hong-da

State Key Laboratory of Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China

Received:2010-03-26 Revised:2010-05-14 Published:2011-01-28 Online:2011-01-14

摘要/Abstract

摘要：

利用严格耦合波算法计算了二维光子晶体平板结构随角度变化透过谱和波长变化透过谱，研究了透过谱上传导共振峰与二维光子晶体平板能带结构的关系。利用共振传导模的低透过和高Q值的特点，设计了基于磷化铟材料的工作在1550nm波长附近的角度分辨和波长分辨的光子晶体光开关。理论模拟结果表明，该结构透过谱上传导共振峰品质因子可达105，非线性折射率变化为10-4即可实现开关对比度接近100%。当信号光或泵浦光分别与光子晶体平板传导共振模耦合时，由于共振耦合使得泵浦光场增强，需要泵浦能量仅为184fJ，为目前所知能量最低的光开关。

关键词: 光子晶体, 光开关, 传导共振模, 磷化铟, 低功率

Abstract:

The wavelength and angle dependent optical transmission of two-dimensional photonic crystal slab are calculated using RCWA (Rigorous coupled wave analysis) method. The relationship between guided resonance of spectrum and the band structure of two-dimensional photonic crystal slab is investigated. Based on InP material photonic crystal slab, angle resolved and wavelength resolved optical switches are designed utilizing the characterization of low transmission and high quality factor of guided resonance. These switches operate at the wavelength of 1550nm. It shows that the quality factor of guided resonance mode in the transmission spectrum can reach 10⁵, and achieve an on-off contrast of nearly 100% with the nonlinear refractive index change of 10^-4. As the signal light and pump light couple with the guided resonance modes of photonic crystal slab respectively, the field intensity of pump light is enhanced, and the pump energy is reduced to only 184 fJ. To our knowledge, this is the lowest energy needed for optical switcher.

Key words: photonic crystal, optical switcher, guided resonance, InP, low power

中图分类号:

O431
TN252

陈率,王春霞,刘宏伟,阚强,许兴胜,陈弘达. 基于光子晶体平板传导共振模的低功率光开关[J]. J4, 2011, 28(1): 73-81.

CHEN Shuai, WANG Chun-xia, LIU Hong-wei, KAN Qiang, XU Xing-sheng , CHEN Hong-da. Low power optical switch based on guided resonance of photonic crystal slab[J]. J4, 2011, 28(1): 73-81.

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