A compact frequency selective stop-band splitter by using Fabry–Perot nanocavity in a T-shape waveguide

doi:10.1088/1674-1056/22/4/047808

中国物理B ›› 2013, Vol. 22 ›› Issue (4): 47808-047808.doi: 10.1088/1674-1056/22/4/047808

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

A compact frequency selective stop-band splitter by using Fabry–Perot nanocavity in a T-shape waveguide

M Afshari Bavil, 孙秀冬

Department of Physics, Harbin Institute of Technology, Harbin 150001, China

收稿日期:2012-07-02 修回日期:2012-08-04 出版日期:2013-03-01 发布日期:2013-03-01
基金资助:
Project supported by the National Key Basic Research Program of China (Grant No. 2013CB328702).

A compact frequency selective stop-band splitter by using Fabry–Perot nanocavity in a T-shape waveguide

M Afshari Bavil, Sun Xiu-Dong (孙秀冬)

Department of Physics, Harbin Institute of Technology, Harbin 150001, China

Received:2012-07-02 Revised:2012-08-04 Online:2013-03-01 Published:2013-03-01
Contact: Sun Xiu-Dong E-mail:xdsun@hit.edu.cn
Supported by:
Project supported by the National Key Basic Research Program of China (Grant No. 2013CB328702).

摘要/Abstract

摘要： By utlizing Fabry-Perot (FP) nanocavity adjacent to T-shape gap waveguide ports, spectrally selective filtering is realized. When the wavelength of incident light corresponds to the resonance wavelength of the FP nanocavity, the surface plasmons are captured inside the nanocavity, and light is highly reflected from this port. The resonance wavelength is determined by using Fabry-Perot resonance condition for the nanocavity. For any desired filtering frequency the dimension of nanocavity can be tailored. The numerical results are based on the two-dimensional finite difference time domain simulation under a perfectly matched layer absorbing boundary condition. The analytical and simulation results indicate that the proposed structure can be utilized for filtering and splitting applications.

关键词: T-shape splitter, Fabry-Perot nanocavity, spectrally selective splitting, finite difference time domain (FDTD) simulation

Abstract: By utlizing Fabry-Perot (FP) nanocavity adjacent to T-shape gap waveguide ports, spectrally selective filtering is realized. When the wavelength of incident light corresponds to the resonance wavelength of the FP nanocavity, the surface plasmons are captured inside the nanocavity, and light is highly reflected from this port. The resonance wavelength is determined by using Fabry–Perot resonance condition for the nanocavity. For any desired filtering frequency the dimension of nanocavity can be tailored. The numerical results are based on the two-dimensional finite difference time domain simulation under a perfectly matched layer absorbing boundary condition. The analytical and simulation results indicate that the proposed structure can be utilized for filtering and splitting applications.

Key words: T-shape splitter, Fabry–Perot nanocavity, spectrally selective splitting, finite difference time domain (FDTD) simulation

中图分类号: (Optical properties of surfaces)

78.68.+m

68.47.De (Metallic surfaces) 42.79.Fm (Reflectors, beam splitters, and deflectors)

M Afshari Bavil, 孙秀冬. A compact frequency selective stop-band splitter by using Fabry–Perot nanocavity in a T-shape waveguide[J]. 中国物理B, 2013, 22(4): 47808-047808.

M Afshari Bavil, Sun Xiu-Dong (孙秀冬). A compact frequency selective stop-band splitter by using Fabry–Perot nanocavity in a T-shape waveguide[J]. Chin. Phys. B, 2013, 22(4): 47808-047808.

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A compact frequency selective stop-band splitter by using Fabry–Perot nanocavity in a T-shape waveguide

A compact frequency selective stop-band splitter by using Fabry–Perot nanocavity in a T-shape waveguide

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