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Nonlinear property analysis of long-period fiber gratings using discretized coupled-mode theory

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2 Author(s)
Yoonchan Jeong ; Sch. of Electr. Eng., Seoul Nat. Univ., South Korea ; Byoungho Lee

We present generalized mathematical expressions for coupled-mode equations for nonlinear pulse propagation in fiber gratings using discretized coupled-mode theory and quantitatively analyze the nonlinear properties of long-period fiber gratings, considering multimode coupling between the core mode and several cladding modes. The calculations yield nonlinear responses for the case of long-period fiber gratings, including pulse shaping and all-optical switching in the self- and cross-phase modulation regimes. In addition, we briefly discuss the group delay properties of long-period fiber gratings and present several numerical examples of nonlinear pulse compression, which is related to strong dispersion and soliton-like behavior in fiber gratings

Published in:

IEEE Journal of Quantum Electronics  (Volume:35 ,  Issue: 9 )