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Proceedings Paper

All-optical switching characteristics analysis in an optimized nonlinear Bragg grating with a [pi] phase shift
Author(s): Jian-Jun Chen; Lin-Fu Li; Murat Hamit; Yan-Ting Hu; Xiao-Xi Fan; Abuduaini Kuduluke
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Paper Abstract

We numerically study the nonlinear switching characteristics of optical transmission through optimized fiber Bragg grating with a π phase shift. The nonlinear coupled-mode equations were solved numerically based on the time-dependent transfer-matrix method. The result shows that the π phase shift grating is superior to the uniform grating in the enhancement, corresponding to the local intensity of the light inside the grating. It shows that the use of π phase shift gratings reduces effectively the switching threshold, but the on-off contrast is generally declined which can be generally improved through the introduction of tapered parameters. In addition, the narrowed transmitted pulse for positive-tapered nonlinear Bragg grating is a Bragg soliton owing to the balance of anomalous group velocity dispersion and self-phase modulation (SPM). It can be found that the tapered nonlinear Bragg grating with a π phase shift is more preferable for achieving the larger on-off contrast.

Paper Details

Date Published: 29 November 2012
PDF: 8 pages
Proc. SPIE 8554, Quantum and Nonlinear Optics II, 85541J (29 November 2012); doi: 10.1117/12.2001077
Show Author Affiliations
Jian-Jun Chen, Xinjiang Medical Univ. (China)
Lin-Fu Li, Guizhou Minzu Univ. (China)
Murat Hamit, Xinjiang Medical Univ. (China)
Yan-Ting Hu, Xinjiang Medical Univ. (China)
Xiao-Xi Fan, Xinjiang Medical Univ. (China)
Abuduaini Kuduluke, Xinjiang Medical Univ. (China)

Published in SPIE Proceedings Vol. 8554:
Quantum and Nonlinear Optics II
Qihuang Gong; Guang-Can Guo; Yuen-Ron Shen, Editor(s)

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