Study of coupling length of concentrically curved waveguides

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题名:	Study of coupling length of concentrically curved waveguides
作者:	李建階;Cai, Dong-Po;Chen, Chii-Chang;Lee, Chien-Chieh;Wang, Tsong-Dong
贡献者:	光電科學研究中心
关键词:	Concentrically curved waveguides;conformal transformation;coupling coefficient;coupling length;Couplings;Finite difference methods;Indexes;Optical waveguides;Refractive index;Time domain analysis;Waveguide transitions
日期:	2012-01-10
上传时间:	2026-04-23 11:22:15 (UTC+8)
出版者:	Institute of Electrical and Electronics Engineers Inc.;Piscataway: IEEE
摘要:	摘要： In this paper, we propose a method based on Helmholtz equation to determine the coupling length of the light propagating in concentrically curved waveguides by the conformal transformation. After the transformation, the concentrically curved waveguides are regarded as straight directional couplers, and the coupling length can be obtained rapidly by using this method. We also calculate the coupling length by the finite-difference time-domain (FDTD) method to compare with the result obtained by our method. The results show a good agreement between the coupling length obtained by the conformal transformation and the FDTD method. 其他題名： JPHOT 出版者： Piscataway: IEEE 出版日期： 2012-02-01 出處： IEEE photonics journal, 2012-02, Vol.4 (1), p.80-85 資源來源： IEEE Electronic Library (IEL) 版權： Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) Feb 2012 識別號： ISSN: 1943-0655 識別號： ISSN: 1943-0647 識別號： EISSN: 1943-0647 識別號： DOI: 10.1109/JPHOT.2011.2178063 識別號： CODEN: PJHOC3
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