Method and apparatus for processing analog optical wave signals
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United States of America Patent
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Jan 17, 1989
Issued Date -
N/A
app pub date -
Sep 9, 1986
filing date -
Apr 13, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Discrete segments of an analog optical wave signal are collected in individual waveguides of a waveguide array. In the waveguide array, the optical signal is processed to provide an analysis of the signal or to control the signal. The signal can be analyzed by Mach-Zehnder interferometers which can provide an indication of the distance of a subject from the array. By controlling the dielectric constants of the waveguides electronically, the array can serve as an aberration free focusing lens or as an aberration compensation lens. Rapid electronic control of the focal length of the lens makes the lens particularly applicable to automatic focusing systems, systems which view only objects within a selected range of distances from the array, and the compiling of in focus segments to form a wide depth of field image.
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