Spatially multiplexed optical signal processor

Details Spatially multiplexed optical signal processor Spatially multiplexed optical signal processor

1995-01-05

1997-05-13

Callahan, Timothy P.

Optical: systems and elements

Diffraction

From grating

359559, 359566, G02B 518, G03H 116

Patent

active

056298021

ABSTRACT:
A spatial light modulator has a plurality of pairs of input and reference images recorded upon a plurality of sub-areas thereof. Each sub-area is illuminated with an associated point source of light which is produced by illuminating a diffraction grating with coherent light. A Fourier transform lens produces a joint transform of each pair of input and reference images which can be detected by a CCD camera.

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Jahns et al, "Damman gratings for laser beam shaping", vol. 28 No. 12. Dec. 1989.

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