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Design considerations for an active feedback optical system

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Abstract

The optical processor proposed here consists basically of a coherent light source and two liquid crystal light valves, of which the first converts incoherent input patterns into coherent ones; the second operates entirely on coherent signals. It is shown that, if the valve operating point is correctly chosen and its transfer characteristic linearized, negative feedback is implemented around the second valve. The valves perform as active system components, because they modulate the source power by their driving signals.

The linear dynamic range, modulation transfer function, and time transient behaviour of the system are briefly studied.

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Authors and Affiliations

  1. Via Duprè 5, 21013, Gallarate, Italy

    Giovanni Crosta

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  1. Giovanni Crosta
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Crosta, G. Design considerations for an active feedback optical system. Opt Quant Electron 10, 9–15 (1978). https://doi.org/10.1007/BF00620239

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  • DOI: https://doi.org/10.1007/BF00620239

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