中国物理B ›› 2014, Vol. 23 ›› Issue (11): 114205-114205.doi: 10.1088/1674-1056/23/11/114205

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

High-Q cavity based on gradated one-dimensional photonic crystal

高永浩, 许兴胜   

  1. State Key Laboratory of Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
  • 收稿日期:2014-05-05 修回日期:2014-06-10 出版日期:2014-11-15 发布日期:2014-11-15
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 61275045, 91121019, and 61021003) and the National Basic Research Program of China (Grant No. 2013CB632105).

High-Q cavity based on gradated one-dimensional photonic crystal

Gao Yong-Hao (高永浩), Xu Xing-Sheng (许兴胜)   

  1. State Key Laboratory of Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
  • Received:2014-05-05 Revised:2014-06-10 Online:2014-11-15 Published:2014-11-15
  • Contact: Xu Xing-Sheng E-mail:xsxu@semi.ac.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 61275045, 91121019, and 61021003) and the National Basic Research Program of China (Grant No. 2013CB632105).

摘要:

A high quality-factor (Q) cavity based on a one-dimensional (1D) photonic crystal with gradated elliptical holes was designed using FDTD simulation. Different gradient profiles of the mirror holes were found to correspond to different Q-values of the cavities. A simple strategy is proposed to construct high-Q cavities by using an S-shaped gradient profile for the elliptical holes' minor axes, such as a cosine function or Gaussian function. Using such a strategy, a Q value exceeding two million is obtained with only ten mirror holes in a cavity.

关键词: photonic crystal, high-Q cavity, gradated cavities

Abstract:

A high quality-factor (Q) cavity based on a one-dimensional (1D) photonic crystal with gradated elliptical holes was designed using FDTD simulation. Different gradient profiles of the mirror holes were found to correspond to different Q-values of the cavities. A simple strategy is proposed to construct high-Q cavities by using an S-shaped gradient profile for the elliptical holes' minor axes, such as a cosine function or Gaussian function. Using such a strategy, a Q value exceeding two million is obtained with only ten mirror holes in a cavity.

Key words: photonic crystal, high-Q cavity, gradated cavities

中图分类号:  (Photonic bandgap materials)

  • 42.70.Qs
42.60.Da (Resonators, cavities, amplifiers, arrays, and rings) 42.79.Gn (Optical waveguides and couplers)