中国物理B ›› 2011, Vol. 20 ›› Issue (7): 74210-074210.doi: 10.1088/1674-1056/20/7/074210

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

A compact in-plane photonic crystal channel drop filter

赵铱楠, 李科铮, 王雪华, 金崇君   

  1. State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-sen University, Guangzhou 510275, China
  • 收稿日期:2010-03-04 修回日期:2011-01-06 出版日期:2011-07-15 发布日期:2011-07-15

A compact in-plane photonic crystal channel drop filter

Zhao Yi-Nan(赵铱楠), Li Ke-Zheng(李科铮), Wang Xue-Hua(王雪华), and Jin Chong-Jun (金崇君)   

  1. State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-sen University, Guangzhou 510275, China
  • Received:2010-03-04 Revised:2011-01-06 Online:2011-07-15 Published:2011-07-15

摘要: This paper presents a novel in-plane photonic crystal channel drop filter. The device is composed of a resonant cavity sandwiched by two parallel waveguides. The cavity has two resonant modes with opposite symmetries. Tuning these two modes into degeneracy causes destructive interference in bus waveguide, which results in high forward drop efficiency at the resonant wavelength. From the result of numerical analysis by using two-dimensional finite-difference time-domain method, the channel drop filter has a drop efficiency of 96% and a Q value of over 3000, which can be used in dense wavelength division multiplexing systems.

Abstract: This paper presents a novel in-plane photonic crystal channel drop filter. The device is composed of a resonant cavity sandwiched by two parallel waveguides. The cavity has two resonant modes with opposite symmetries. Tuning these two modes into degeneracy causes destructive interference in bus waveguide, which results in high forward drop efficiency at the resonant wavelength. From the result of numerical analysis by using two-dimensional finite-difference time-domain method, the channel drop filter has a drop efficiency of 96% and a Q value of over 3000, which can be used in dense wavelength division multiplexing systems.

Key words: photonic band gap materials, integrated optics, optical waveguides, optical communications devices

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)