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Proceedings Paper

Analysis of retro-diffraction efficiency for grating-based integrated waveguide demultiplexer
Author(s): Hongqiao Wen; Zhongyan Sheng; Sailing He
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Paper Abstract

Grating based integrated waveguide demultiplexer is one of the most promising types of planar waveguide DWDM devices. In order to reduce reflection loss of the grating, the grating facets need metallic coating for high efficiency. The analysis of retro-diffraction efficiency for echelle grating with metallic coating is given in the present paper by using a Finite-Difference Time-Domain (FDTD) method. This numerical method is more accurate and reliable than other methods such as the ray approximation method. Numerical simulation is given for S-polarized lights and the numerical results show that the loss is about 1dB.

Paper Details

Date Published: 28 August 2002
PDF: 6 pages
Proc. SPIE 4904, Optical Fiber and Planar Waveguide Technology II, (28 August 2002); doi: 10.1117/12.481265
Show Author Affiliations
Hongqiao Wen, Zhejiang Univ. (China)
Zhongyan Sheng, Zhejiang Univ. (China)
Sailing He, Zhejiang Univ. (China)

Published in SPIE Proceedings Vol. 4904:
Optical Fiber and Planar Waveguide Technology II
Shuisheng Jian; Steven Shen; Katsunari Okamoto, Editor(s)

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