中国物理B ›› 2012, Vol. 21 ›› Issue (3): 34215-034215.doi: 10.1088/1674-1056/21/3/034215

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崔乃迪1 2,梁静秋1,梁中翥1,王维彪1   

  • 收稿日期:2011-07-20 修回日期:2011-10-25 出版日期:2012-02-15 发布日期:2012-02-15
  • 通讯作者: 王维彪,wangwbt@126.com E-mail:wangwbt@126.com

A photonic crystal side-coupled waveguide based on a high-quality-factor resonator array

Cui Nai-Di(崔乃迪)a)b), Liang Jing-Qiu(梁静秋)a), Liang Zhong-Zhu(梁中翥)a), and Wang Wei-Biao(王维彪) a)†   

  1. a. State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China;
    b. Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2011-07-20 Revised:2011-10-25 Online:2012-02-15 Published:2012-02-15
  • Contact: Wang Wei-Biao,wangwbt@126.com E-mail:wangwbt@126.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 60877031).

Abstract: Based on the present coupled mode theory of the photonic crystal resonator array in this paper, we propose a novel side-coupled waveguide to achieve highly efficient coupling of photonic crystal devices. It is found that the coupling efficiency is sensitive to the interval, the total number and the quality factor of the resonator. Considering the coupling efficiency and the coupling region, we select five resonators with an interval of six lattice periods. By optimizing the structure parameters of the waveguide and resonator, the quality factors of the resonator can be modulated and the coupling efficiency of the side-coupled waveguide reaches 95.47% in theory. Compared with other coupling methods, the side-coupled waveguide can realize efficient coupling with a compact structure, a high level of integration and a low degree of operational difficulties.

Key words: side-coupled waveguide, photonic crystal, high-quality-factor cavity

中图分类号:  (Photonic bandgap materials)

  • 42.70.Qs
42.79.Gn (Optical waveguides and couplers) 42.82.Et (Waveguides, couplers, and arrays)