Interferometric modulator for optical signal processing

Details Interferometric modulator for optical signal processing Interferometric modulator for optical signal processing

1994-05-03

1996-12-10

Turner, Samuel A.

Optics: measuring and testing

By particle light scattering

With photocell detection

G01B 902

Patent

active

055836364

ABSTRACT:
An interferometric modulator uses a beamsplitter to produce deflected and transmitted light beams onto mirrored surfaces of a piezoelectric crystal pair, one piezoelectric crystal being driven by a modulating voltage signal, whereupon the light beams are reflected back to the beamsplitter to produce a modulated optical output signal, with the modulator being especially adaptable for use as a digital photonic clock, as a pulse width/amplitude modulator, and as a bistable optical memory cell. A self-switching optical digital clock generates a digital signal without piezoelectric crystals by using analog optical feedback signals of precise time durations. Interferometric modulation is also used to amplify a sinusoidal electromagnetic signal, to regulate signal amplification, and to create logic functions.

REFERENCES:
patent: 3738754 (1973-06-01), Marcy et al.
patent: 4533247 (1985-08-01), Epworth
patent: 5117471 (1992-05-01), Furstenau
patent: 5315370 (1994-05-01), Bulow

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