Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
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Theoretical Description of All-Optical Switching Phenomena Involving Coupled Gap Solitons

  • Lee, Sangjae (School of Electronic and Electrical Engineering, Kyungpook National Univ.)
  • Published : 1996.12.01
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Abstract

We study the propagation of two pulses with orthogonal linear polarizations in a nonlinear periodic dielectric structure with $X^{(3)}$ nonlinearity. Using an envelope- function approach, we derive the coupled nonlinear Schrodinger equations governing the spatio-temporal evolutions of the two orthogonally polarized modes in a nonlinear periodic structure. We then find their solitary-wave solutions referred to as coupled gap solitons. We show that two orthogonally polarized pulses can co-propagate as a coupled gap soliton through a nonlinear periodic structure while each pulse alone will be strongly reflected due to the Bragg reflection. Based on the results, we present an all-optical switching scheme which has a novel architecture and principle. We also study the stability of coupled gap solitons to find the dragging phenomena in a nonlinear birefringent periodic medium.

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