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Proceedings Paper

United model of fiber coupler based on variation technique
Author(s): Jianguo Ren; Yongming Hu; Xueliang Zhang; Zhengliang Hu; Yang Liu
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Paper Abstract

For the irregular shape of a fiber coupler, the coupling characteristics of it are usually studied in its different sections separately. It's necessary to build a united model to simulate the coupling characteristics of each section all together. Some appropriate geometrical configurations were employed, and modal field in a coupler was obtained by the weighted superposition of triangular distribution and Gaussian distribution, in the condition of lossless propagation. With that a united model was obtained by the variation technique, combined with the concept of local modes. It's a more refined model, which is available on condition that the core radius in the neck waist is around 1 μm and can provide theoretical guidance for the practical design and fabrication of a fused-tapered single-mode fiber coupler. In its effective area, there is a good agreement between the theoretical result and experimental result.

Paper Details

Date Published: 18 November 2010
PDF: 6 pages
Proc. SPIE 7847, Optoelectronic Devices and Integration III, 784730 (18 November 2010); doi: 10.1117/12.871784
Show Author Affiliations
Jianguo Ren, National Univ. of Defense Technology (China)
Yongming Hu, National Univ. of Defense Technology (China)
Xueliang Zhang, National Univ. of Defense Technology (China)
Zhengliang Hu, National Univ. of Defense Technology (China)
Yang Liu, Taiyuan Satellite Launch Ctr. (China)


Published in SPIE Proceedings Vol. 7847:
Optoelectronic Devices and Integration III
Xuping Zhang; Hai Ming; Alan Xiaolong Wang, Editor(s)

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