Abstract
We theoretically analyze the nonlinear phase shifts induced by cascaded processes in one-dimensional photonic bandgap structures. We find that the enhancement of the density of modes near the band edge, coupled with a suitable choice of relative phase mismatch, leads to a remarkable new effect: The relative phase shift of the fundamental field on transmission can be of the order of over a distance of , with input intensities of the order of only .
© 1999 Optical Society of America
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