Design and analysis of completely adiabatic tapered waveguides by conformal mapping

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/28187

Title:	Design and analysis of completely adiabatic tapered waveguides by conformal mapping
Authors:	Lee,CT;Wu,ML;Sheu,LG;Fan,PL;Hsu,JM
Contributors:	光電科學研究所
Keywords:	CHANNEL WAVE-GUIDES;DIELECTRIC TAPERS;DISCONTINUITIES;SIZE
Date:	1997
Issue Date:	2010-06-29 19:43:16 (UTC+8)
Publisher:	中央大學
Abstract:	In this study, we propose a novel equivalent-waveguide concept to design the completely adiabatic tapered waveguides. The optimal combination of taper shape and refractive-index distribution in such ideal structures is obtained by applying a series of conformal mappings to transform a single-mode straight waveguide into an equivalent tapered configuration. In an ideal taper the curved phase-front effect verifies the constant V-number concept is insufficient for designing a tapered waveguide. Also, the beam propagation method combined with the conformal mapping method is used to analyze the characteristics of light propagation in ideal structures. Simulation results predict that in the ideal taper a perfect mode-size conversion can be achieved adiabatically.
Relation:	JOURNAL OF LIGHTWAVE TECHNOLOGY
Appears in Collections:	[Graduate Institute of Optics and Photonics] journal & Dissertation

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