Spatial frequency diversity in coherent optical processing

Applied Optics
G B Brandt

Abstract

Coherent optical noise can be suppressed by sending the desired signal through a number of channels and combining the result at the output. Channels coded by means of spatial frequency are particularly convenient for optical processing systems and offer some advantages additional to noise reduction. The mechanism of noise reduction is described for such spatial frequency diversity systems, and some experiments are described that illustrate noise reduction and multiple filtering possibilities of this technique.

References

Apr 1, 1968·Applied Optics·A W Lohmann, D P Paris
Nov 1, 1968·Applied Optics·H J GerritsenE G Ramberg
May 1, 1970·Applied Optics·H J Caulfield
Apr 1, 1972·Applied Optics·Y TakedaY Miyamura

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Citations

Sep 1, 1973·Applied Optics·J Upatnieks, R W Lewis
Aug 1, 1973·Applied Optics·H J Caulfield
Jul 15, 1979·Applied Optics·P C Mehta, R Hradaynath
Feb 1, 1976·Applied Optics·P K Katti, P C Mehta

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