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Polarization-Insensitive Cross-Correlation Using Two-Photon Absorption in a Silicon Photodiode

Authors

Reza Salem, rsalem@eng.umd.edu
Thomas E. Murphy, tem@umd.edu

Abstract

We present experimental measurements of the polarization dependence of two-photon absorption in silicon photodiodes at 1550 nm, and we offer a simple theory that explains our observations. Based on this theory, we propose and demonstrate that it is possible to construct an optical cross-correlation system that is polarization-insensitive, provided one of the two input polarization states can be controlled.

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