J. Khoury et al., PHOTOREFRACTIVE QUADRATIC PROCESSOR FOR SIGNAL RECOVERY FROM MULTIPLICATIVE COMPLEX NOISE, Optical engineering, 32(11), 1993, pp. 2872-2876
Signal recovery from multiplicative complex noise is proposed and demo
nstrated. The recovery is achieved by using two phase conjugators in s
eries to produce a photorefractive quadratic nonlinear processor.