Abstract

Nonlinear loss is the central problem in silicon devices that operate using nonlinear optical effects. Wavelength converters are one example of such devices, wherein high optical intensities required for nonlinear interactions cause two-photon absorption and severe free-carrier absorption. In this paper, we report the first demonstration of nonlinear photovoltaic effect in silicon wavelength converters. This useful phenomenon allows us to eliminate the nonlinear loss caused by free-carrier absorption, while harvesting the optical power that is normally consumed by two-photon absorption.

© 2006 Optical Society of America

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History
Original Manuscript: September 21, 2006
Manuscript Accepted: November 7, 2006
Revised Manuscript: October 28, 2006
Published: December 11, 2006

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Author Affiliations

Kevin K. Tsia, Sasan Fathpour, Bahram Jalali

University of California, Los Angeles

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