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Apodized photonic crystal waveguide gratings

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タイトル: Apodized photonic crystal waveguide gratings
著者: Yokoi, Nobuhiro 著作を一覧する
Fujisawa, Takeshi 著作を一覧する
Saitoh, Kunimasa 著作を一覧する
Koshiba, Masanori 著作を一覧する
キーワード: optical devices
bragg reflectors
photonic crystal
発行日: 2006年 5月15日
出版者: Optical Society of America
誌名: Optics Express
巻: 14
号: 10
開始ページ: 4459
終了ページ: 4468
抄録: Apodized photonic crystal (PC) waveguide gratings are proposed to suppress sidelobes which appear in reflection spectra of usual PC waveguide gratings. By using specific functions (Gauss and Gauss-cosine functions) for the longitudinal refractive index distribution, it is possible to suppress sidelobes in the reflection spectra of PC waveguide gratings efficiently. The apodization is realized by simply changing diameters of dielectric pillars adjacent to the PC waveguide core. It is shown that by using Gauss-cosine functions for the apodization, Bragg frequency of the waveguide grating becomes insensitive to the magnitude of perturbation leading to the possibility of designing waveguide gratings with arbitrarily Bragg frequency and bandwidth by modulating geometrical parameters only.
Rights: © 2006 Optical Society of America, Inc.
Relation (URI):
資料タイプ: article (author version)
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 齊藤 晋聖


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