Open AccessSoliton switching and multi-frequency generation in a nonlinear photonic crystal fiber coupler
Author(s) -
Kaisar R. Khan,
Thomas Wu,
Demetrios N. Christodoulides,
George I. Stegeman
Publication year - 2008
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.009417
Subject(s) - photonic crystal fiber , soliton , nonlinear photonic crystal , optics , physics , dispersion (optics) , power dividers and directional couplers , nonlinear system , photonic crystal , coupling (piping) , ultrashort pulse , optical fiber , materials science , laser , quantum mechanics , metallurgy
Soliton switching in nonlinear directional couplers implemented in photonic crystal fibers (PCF) examined here. A vector finite element method (FEM) has been developed to precisely calculate the dispersion along with coupling length of the guided modes. The PCF coupler geometry was carefully designed so that it can support soliton pulses. Soliton switching is demonstrated numerically at 1.55 microm for 100 femto-second (fs) pulses. Our theoretical results explain some of the key spectral features previously observed in the experiment.