An electrooptical realization of an optimal phase estimator for phase modulated communication signals is described in this work. The realization uses an electrooptical processor to perform a 1-D convolution in a 2-D space and a computer to complete the calculations. The processor is a realization of the time domain recursive nonlinear filter. This paper describes the nonlinear filter theory, the electrooptical realization, and the performance of the processor.
© 1983 Optical Society of America
W. E. Stephens and W. H. Steier, "Hybrid optical—digital signal processing applied to an optimal nonlinear phase estimator," Appl. Opt. 22, 787-795 (1983)