All-optical switching characteristics analysis in an optimized nonlinear Bragg grating with a [pi] phase shift

Jian-Jun Chen; Lin-Fu Li; Murat Hamit; Yan-Ting Hu; Xiao-Xi Fan; Abuduaini Kuduluke

doi:10.1117/12.2001077

29 November 2012 All-optical switching characteristics analysis in an optimized nonlinear Bragg grating with a π phase shift

Jian-Jun Chen, Lin-Fu Li, Murat Hamit, Yan-Ting Hu, Xiao-Xi Fan, Abuduaini Kuduluke

Author Affiliations +

Proceedings Volume 8554, Quantum and Nonlinear Optics II; 85541J (2012) https://doi.org/10.1117/12.2001077
Event: Photonics Asia, 2012, Beijing, China

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.

Citation Download Citation

Jian-Jun Chen, Lin-Fu Li, Murat Hamit, Yan-Ting Hu, Xiao-Xi Fan, and Abuduaini Kuduluke "All-optical switching characteristics analysis in an optimized nonlinear Bragg grating with a π phase shift", Proc. SPIE 8554, Quantum and Nonlinear Optics II, 85541J (29 November 2012); https://doi.org/10.1117/12.2001077

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