Patent
1989-12-12
1991-06-11
Sikes, William L.
G02B 610
Patent
active
050227319
ABSTRACT:
In a device for shifting the frequency of an optical wave, two optical waveguides coupled by an optical wave which propagates in the symmetric mode are excited and subjected to the action of an electromagnetic traveling wave having the effect of shifting the frequency of the optical wave which undergoes a transition from the symmetric mode to the antisymmetric mode. A transfer device supplied with a direct-current voltage V.sub.O serves to re-convert the antisymmetric mode to the symmetric mode in order to add the two light signals and to obtain a single output signal translated by the frequency F. This permits the construction of BLU optical modulators.
REFERENCES:
patent: 4761049 (1988-08-01), Burns et al.
patent: 4871223 (1989-10-01), Auracher et al.
patent: 4932738 (1990-06-01), Haas et al.
patent: 4940305 (1990-07-01), Thaniyavarn
Proccedings of the IEEE 1987 Ultrasonics Symposium, Denver, Colo., Oct. 14-16, 1987, vol. 1, pp. 471-474, IEEE, New York, U.S., Y. Miyazaki, et al., "Integrated Optical Signal Processors Consisting of Collinear Acousto-Optic Switches".
Applied Physics Letter, vol. 4, No. 5, Sep. 1, 1984, pp. 490-492, American Institute of Physics, New York, U.S.; F. Heismann, et al.: "Integrated-Optical Frequency Translator with Stripe Waveguide".
Desormiere Bernard
Maerfeld Charles
"Thomson-CSF"
Sikes William L.
Wise Robert E.
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