We investigated the correlation performance of a joint fractional Fourier-transform
correlator (JFRTC) using computer simulation results. We present a mathematical
analysis suggesting use of processing techniques based on a nonlinear transformation
and fractional-order fractional-power fringe-adjusted filter to attain improved
performance in terms of discrimination sensitivity and input space–bandwidth
utilization. Optimal noise performance for the JFRTC is predicted in the presence of
additive white Gaussian noise. An all-optical implementation scheme based on
incoherent erasure in a photorefractive crystal is proposed.
© 2001 Optical Society of America
Equations on this page are rendered with MathJax. Learn more.