Abstract

We theoretically analyze the nonlinear phase shifts induced by cascaded χ2:χ2 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 π over a distance of 7 µm, with input intensities of the order of only 10 MW/cm2.

© 1999 Optical Society of America

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