United model of fiber coupler based on variation technique

Jianguo Ren; Yongming Hu; Xueliang Zhang; Zhengliang Hu; Yang Liu

doi:10.1117/12.871784

17 November 2010 United model of fiber coupler based on variation technique

Jianguo Ren, Yongming Hu, Xueliang Zhang, Zhengliang Hu, Yang Liu

Proceedings Volume 7847, Optoelectronic Devices and Integration III; 784730 (2010) https://doi.org/10.1117/12.871784
Event: Photonics Asia 2010, 2010, Beijing, China

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.

Citation Download Citation

Jianguo Ren, Yongming Hu, Xueliang Zhang, Zhengliang Hu, and Yang Liu "United model of fiber coupler based on variation technique", Proc. SPIE 7847, Optoelectronic Devices and Integration III, 784730 (17 November 2010); https://doi.org/10.1117/12.871784

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