Nonlinearity-induced broadening of resonances in dynamically modulated couplers

Details Nonlinearity-induced broadening of resonances in dynamically modulated couplers Nonlinearity-induced broadening of resonances in dynamically modulated couplers

2009-08-21

arxiv.org/abs/0908.3115v1

Optics Letters 34, 2700 (2009)

Physics

Optics

14 pages, 4 figures, to appear in Optics Letters

Scientific paper

We report the observation of nonlinearity-induced broadening of resonances in dynamically modulated directional couplers. When the refractive index of the guiding channels in the coupler is harmonically modulated along the propagation direction and out-of-phase in two channels, coupling can be completely inhibited at resonant modulation frequencies. We observe that nonlinearity broadens such resonances and that localization can be achieved even in detuned systems at power levels well below those required in unmodulated couplers.

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