title: Polarization-insensitive cross correlation using two-photon absorption in a silicon photodiode.
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 that one of the two input polarization states can be controlled.
authors.affiliation: Department of Electrical and Computer Engineering, University of Maryland, College Park, Maryland 20742, USA. rsalem@umd.edu
authors.forename: Reza
authors.initials: R
authors.lastname: Salem
authors.forename: Thomas E
authors.initials: TE
authors.lastname: Murphy