Abstract
We present an analysis of a high index core symmetric Bragg reflection waveguide (BRW) design based on a system for efficient quasi-phase-matched second-harmonic generation for broadband applications. By choosing the fundamental frequency to be a BRW mode and suitably tailoring the overall dispersion characteristics, the strong dispersion of the second-harmonic mode is partially canceled, leading to phase matching between the fundamental and second-harmonic over a broad range of wavelengths. The crucial interplay between the dispersive behavior of the fundamental and second-harmonic wave manifests as a broad acceptance bandwidth of accompanied with appreciable conversion efficiency for a long waveguide. The impact of tailoring the dispersion characteristics on the conversion efficiency is also discussed.
© 2007 Optical Society of America
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