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Design of effectively single-mode air-core photonic bandgap fiber with improved transmission characteristics for the realization of ultimate low loss waveguide

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タイトル: Design of effectively single-mode air-core photonic bandgap fiber with improved transmission characteristics for the realization of ultimate low loss waveguide
著者: Murao, Tadashi 著作を一覧する
Saitoh, Kunimasa 著作を一覧する
Florous, Nikolaos J. 著作を一覧する
Koshiba, Masanori 著作を一覧する
キーワード: Fiber design and fabrication
Fiber properties
発行日: 2007年 4月 2日
出版者: Optical Society of America
誌名: Optics Express
巻: 15
号: 7
開始ページ: 4628
終了ページ: 4280
抄録: In this paper, we study the novel propagation properties of an improved triangular-type air-core photonic bandgap fiber (PBGF) structured with an anti-resonant silica core surround, through a full-vector modal solver based on the finite-element method (FEM). At first, to realize a single-mode operation over a wide wavelength range, the fiber whose core is constructed by removing 1 air-hole and expanded is proposed and structurally-optimized. In particular, the structural parameters for the fiber that prevent the narrow-band transmission due to the existence of the surface modes and enhance the confinement of the power in the air-core are presented. For the realization of an ultimate low loss transmission, a 7-unit-cell PBGF is analyzed and we show that the 7-unit-cell PBGF can achieve not only lower confinement loss than that of regular-type 7-unit-cell PBGF, but also lower power fraction in the silica-ring when compared with the regular 19-unit-cell PBGF with an anti-resonant core surround, exhibiting an effectively single-mode operation.
Rights: © 2007 Optical Society of America, Inc.
資料タイプ: article (author version)
URI: http://hdl.handle.net/2115/22105
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 村尾 覚志

 

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