Optical waveguides – Temporal optical modulation within an optical waveguide – Electro-optic
Patent
1998-01-12
2000-06-06
Palmer, Phan T. H.
Optical waveguides
Temporal optical modulation within an optical waveguide
Electro-optic
385 1, 385 9, 385 15, 385 41, 385 45, G02F 1035
Patent
active
060729198
ABSTRACT:
An optical method and apparatus particularly useful as an intensity modulation system, in which two phase modulators are placed in the loop of a Sagnac interferometer. Selective placement of the modulators, and the amplitude of any modulation signal input to the modulators, varies the bandwidth and frequency response of the system. In a preferred embodiment, the ratio of the optical distances of the modulators from interferometric midpoint, and the ratio of modulation signal amplitudes, is about 3:1, which serves to broaden and flatten the frequency response of the system.
REFERENCES:
M.L. Dennis et al., Bias Drift-Free Intensity Modulator for 50-500 MHz Option, abstract submitted for the Seventh Annual DARPA Symposium on Photonic Systems for Antenna Applications, held Jan. 14-16, 1997.
M.L. Dennis et al., Bias Drift-Free Intensity Modulator for 50-500 MHz Operation, proceedings paper from the Seventh Annual DARPA Symposium on Photonic Systems for Antenna Applications, held Jan. 14-16, 1997.
Burns William K.
Dennis Michael L.
Duling, III Irt N.
Moeller Robert P.
Edelberg Barry A.
Miles Edward F.
Palmer Phan T. H.
The United States of America as represented by the Secretary of
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