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Proceedings Paper

Broadband directional coupler based on dual core PCF
Author(s): Ridan Zhu; Aiping Luo; Wencheng Xu; Xude Wang
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Paper Abstract

The depressed-index dual core PCF-based broadband directional coupler is designed by using semivectorial finite difference method. We study the influence of the structural parameters on the coupling characteristics in the dual core PCF. The results show that once the structural parameter of the cladding of the dual core PCF and the doping degree in the dual core region are optimised, the broadband coupling can be realised: in the wavelength range of 1.22~1.65μm, the value of the coupling length is stabilized at 26637nm±235nm and when the couplers are designed as two kinds of couple with coupling ratio of 50% and 10%, the coupling ratios of (50±0.702)% and (10±0.664)% are realized, respectively.

Paper Details

Date Published: 14 January 2008
PDF: 8 pages
Proc. SPIE 6781, Passive Components and Fiber-based Devices IV, 678149 (14 January 2008); doi: 10.1117/12.743352
Show Author Affiliations
Ridan Zhu, South China Normal Univ. (China)
Aiping Luo, South China Normal Univ. (China)
Wencheng Xu, South China Normal Univ. (China)
Xude Wang, South China Normal Univ. (China)

Published in SPIE Proceedings Vol. 6781:
Passive Components and Fiber-based Devices IV
Ming-Jun Li; Jianping Chen; Satoki Kawanishi; Ian H. White, Editor(s)

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