Abstract

A spatial light modulator (SLM) may be used to variably tap and weight an acousto-optic (AO) delay line. This SLM application occurs in the optical signal processing of multipath delays from radar or other communication sources, as has been demonstrated with various electro-optic processing architectures1.2,3. These multipath delays signal must be estimated and suppressed to ensure optimal system performance. In the architecture presented here, the SLM must accurately select and weight various delays of a signal that propagate across an acousto-optic modulator. This paper reports the relative performance characteristics of the following spatial light modulators used in this application: an AO deflector used as an SLM (AOSLM), a liquid crystal television display (LCD) and a magneto-optic SLM (MOSLM).

© 1990 Optical Society of America