Fully parallel, high-speed incoherent optical method for performing discrete Fourier transforms

Opt Lett. 1978 Jan 1;2(1):1-3. doi: 10.1364/ol.2.000001.

Abstract

An incoherent optical data-processing method is described, which has the potential for performing discrete Fourier transforms of short length at rates far exceeding those afforded by both special-purpose digital hardware and representative coherent optical processors.