Optical processor for pulse train identification

Details Optical processor for pulse train identification Optical processor for pulse train identification

1991-08-26

1993-02-16

Arnold, Bruce Y.

Optical: systems and elements

Holographic system or element

Fourier transform holography

359559, 359563, 364822, G03H 116, G02B 2746, G06E 300

Patent

active

051875985

ABSTRACT:
A pulse train in the presence of random noise and other pulse trains is identified by controlling pixels in a raster display in accordance with incoming signals; using the raster display to modulate a laser beam with the pulses; Fourier-transforming the modulated beam, then performing a Cartesian to polar coordinate transformation on the Fourier-transformed beam; inverse Fourier transforming the coordinate-transformed beam, and passing the result through a line spatial filter and focusing the filtered beam on a one-dimensional detector array.

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O'Meara et al., Optical Phase Conjugation pp. 559, (1983).
Hossack et al., "Coordinate Transformations with Multiple Computer-Generated Optical Elements", Journal of Modern Optics, vol. 34, No. 9 1987, pp. 1235-1250.
Maserjian, et al., "Optically Addressed Spatial Light Modulators by MBE-Grown Nipi MQW Structures", Applied Optics, vol. 28, No. 22, Nov. 15, 1989, pp. 4801-4807.
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