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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/50974


    Title: Enhancing the resonance quality factor in membrane-type resonant grating waveguides
    Authors: Tsai,YL;Chang,JY;Wu,ML;Tu,ZR;Lee,CC;Wang,CM;Hsu,CL
    Contributors: 光電科學與工程學系
    Keywords: OPTICAL FILTERS;MODE;MODULATION
    Date: 2010
    Issue Date: 2012-03-27 18:14:20 (UTC+8)
    Publisher: 國立中央大學
    Abstract: In this Letter, we present a method of reducing the spectral width of guided-mode resonance (GMR) in air-bridged resonant grating-waveguide structures to enhance the Q factor. The posttreatment of adding a dielectric film to the bottom of the membrane to manipulate the resonance behavior is practicable. The introduced underlayer is shown to be capable of effectively reducing the coupling and enhancing the resonant Q factor. The proposed method provides an effective means of adjusting the resonance property without varying the original GMR structure. The results also imply that TM resonance is more feasible for achieving narrow resonance and potentially in sensing applications, because it has higher sensitivity than TE resonance. (C) 2010 Optical Society of America
    Relation: OPTICS LETTERS
    Appears in Collections:[光電科學與工程學系] 期刊論文

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