Polarization-insensitive cross correlation using two-photon absorption in a silicon photodiode.
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.
Salem
Reza
R
Department of Electrical and Computer Engineering, University of Maryland, College Park, Maryland 20742, USA. rsalem@umd.edu
Murphy
Thomas E
TE