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|Title:||Generation of Bragg solitons through modulation instability in a Bragg grating structure|
|Publisher:||American Institute of Physics|
|Citation:||Chaos, Vol 15, Iss 3, P 037109-12|
|Abstract:||In this article, we consider the continuous wave cw propagation through the nonlinear periodic structure that consists of alternating layers of both positive and negative Kerr coefficients along the propagation direction. We investigate the modulational instability MI conditions required for the generation of ultrashort pulses for the nonlinearity management system. We study the occurrence of MI at the top and bottom edges of the photonic band gap PBG where the forward and backward propagating waves are strongly coupled because of the presence of the grating structure. We also study the MI when cw is detuned from the edges of the PBG into the anomalous and normal dispersion regimes. In addition, we discuss the existence of gap solitons for the nonlinearity management system in the upper and lower branches of the dispersion curve through the MI gain spectra. We observe the generation of higher order solitons in the nonlinear periodic structure when the input power is increased beyond a certain critical level. Finally, we discuss the generation of higher order Bragg grating solitons through the intensity evolution of the forward and backward propagating fields.|
|Description:||Copyright for the published version of this paper belongs to American Institute of Physics|
|Appears in Collections:||Journal Articles|
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