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Modal phase-matching in graded index waveguides: unsensitive and efficient phase matched configurations in χ2 based nonlinear integrated optics devices.

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Abstract

We show numerically and experimentally that choosing properly the shape of the index profile of the waveguide and using high order modes for the harmonic, makes the SHG process more efficient and unsensitive to waveguide parameters variations.

© 2019 The Author(s)

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