Analysis of bistable steady characteristics and dynamic stability of linearly tapered nonlinear Bragg gratings | Zendy

Xin-Hong Jia | Zendy; Zheng-Mao Wu | Zendy; Guang-Qiong Xia | Zendy

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Analysis of bistable steady characteristics and dynamic stability of linearly tapered nonlinear Bragg gratings

Author(s) -

Xin-Hong Jia,

Zheng-Mao Wu,

Guang-Qiong Xia

Publication year - 2004

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/opex.12.002945

Subject(s) - bistability , grating , optics , materials science , fiber bragg grating , optical bistability , nonlinear system , stability (learning theory) , nonlinear optics , optoelectronics , physics , laser , quantum mechanics , machine learning , computer science

Based on the nonlinearly coupled mode equations (NLCME), the bistable steady characteristics and dynamic stability of linearly tapered nonlinear Bragg grating (LT-NLBG) have been investigated in detail. The results show that, when the device is tuned near an edge of "photonic band gap" (PBG), in contrast with the free-tapered grating, the negative-tapered grating enhances the switching-on threshold, but increases the on-off switching ratio, enlarges the stable regime, and strengthens the stability significantly. On the other hand, the positive-tapered grating decreases the switching-on threshold, but lower the on-off switching ratio, and worsen the stability remarkably.

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