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Incoherent Electro-Optical Processing: A Tutorial

A tutorial review of incoherent electro-optical processing (EOP), a relatively new approach to compact, high-speed signal processing is presented. The tutorial begins with a brief explanation of the differences between coherent and incoherent optical processors. Different EOP architectures will be covered next with emphasis placed on temporal scanning processors which have the capability of performing real-time, linear transformations on time varying inputs. Systems of this type are directly applicable to many signal processing problems in radar or sonar. The presentation is concluded with a discussion of the state-of-the-art temporal scanning EOP which includes a light emitting diode and imaging charge coupled device as its main components.