Single mode fiber optic single sideband modulator and method of

Details Single mode fiber optic single sideband modulator and method of Single mode fiber optic single sideband modulator and method of

1983-11-30

1987-08-04

Sikes, William L.

350 9615, 350 9613, 350 9614, 350 9630, 350371, 350358, 350320, G02B 602, G02B 530, G02F 111

Patent

active

046842152

ABSTRACT:
A fiber optic frequency shifter comprising two waveguides having different indices of refraction. In some embodiments the waveguides are two modes of propagation in one fiber. Plural distributed coupling ridges, or electrodes mounted adjacent piezoelectric materials, are independently driven to apply sinusoidally varying forces to the fiber. In some embodiments, the phase relationship of the driving signals for the electrodes or ridges is such that a travelling acoustic wave is launched in the fiber. In other embodiments, regions of stress in the fiber are created by an acoustic wave coupled into the fiber from a transducer coupled to an acoustic medium surrounding the fiber. The input carrier light is shifted in frequency by the frequency of the acoustic wave.

REFERENCES:
patent: 3406358 (1968-10-01), Seidel et al.
patent: 3625589 (1971-12-01), Snitzer
patent: 3645603 (1972-02-01), Smith
patent: 3931518 (1976-01-01), Miller
patent: 4268116 (1981-05-01), Schmadel et al.
patent: 4312562 (1982-01-01), Segawa et al.
patent: 4319186 (1982-03-01), Kingsley
patent: 4449210 (1984-05-01), Myer
patent: 4493528 (1985-01-01), Shaw et al.
patent: 4536058 (1985-08-01), Shaw et al.
patent: 4589728 (1986-05-01), Dyott et al.
patent: 4615582 (1986-10-01), Lefevre et al.
Gfeller, "Electroacoustic Transducers . . .", IBM Tech. Disc. Bull., vol. 21, No. 2, 7/78, pp. 813-814.
Ohashi et al., "Phase-Matched Light Amplification . . .", Appl. Phys. Lett., vol. 41, No. 12, 12/82, pp. 1111-1113.
Kitayama et al., "Stress-Induced Frequency Tuning . . .", Appl. Phys. Lett., vol. 41, No. 4, 8/82, pp. 322-324.
Youngquist et al., "Birefringent-Fiber Polarization Coupler", Optics Lett., vol. 8, No. 12, 12/83, pp. 656-658.
Kingston et al., "Broadband Guided Wave . . . Array", Appl. Phys. Lett., vol. 19, No. 1, 5/83, pp. 759-762.
K. Nosu, et al., "Acousto-Optic Frequency Shifter for Single-Mode Fibers", Electronics Letters, vol. 19, No. 20, Sep. 29, 1983.
F. Heisman, et al., "Integrated-Optical Single-Sideband Modulator and Phase Shifter", IEEE Journal of Quantum Electronics, vol. QE18, No. 4, Apr. 1982, pp. 767-771.
R. Ulrich, et al., "Single-Mode Fiber-Optical Polarization Rotator", Applied Optics, vol. 18, No. 11, Jun. 1, 1979, pp. 1857-1861.
"Single-Sideband Frequency Shifting in Birefringent Optical Fiber", Risk, et al., SPIE '84.
"Modulator and Tap for Optical Fiber Systems", Gfeller, et al., IBM Technical Disclosure Bulletin, vol. 21, No. 5, Oct. 1978.
"Acoustooptic Phase Modulator for Single Mode Fibers", Nosu, et al., pp. 316-317, Tech. Conf. Pub, No. 29c5-3, (no date).
"Acousto-Optic Frequency Shifter for Single Mode Fibers", Nosu, et al., pp. 36-37, Tech. Conf. Pub. No. 28c3-5, (no date).
J. Fraser, et al., "The Design of Efficient Broadband Wedge Transducers", Applied Physics Letters, vol. 32, No. 11, Jun. 1, 1978, pp. 698-700.
C. Lardat, et al., "Applications of Edge Bonded Transducers to Saw Components", Proceeding of the IEEE, vol. 64, No. 5, May 1976, pp. 627-630.
E. G. Cook, et al., "Surface Waves and Ultrasonic Frequencies", ASTM Bulletin, (TP127), May 1954, pp. 81-84.
Yariv, "Coupled-Mode Theory for Guided-Wave Optics", IEEE Journal of Quantum Electronics, vol. QE-9, No., Sep. 1973, pp. 919-933.
Chinone et al., "Elasto-Optic Polarization Measurement in Optical Fiber", Optics Letters, vol. 6, No. 1, Jan. 1981, pp. 16-18.
Miller, "On Solutions for Two Waves with Periodic Coupling", The Bell System Technical Journal, Oct. 1968, pp. 1801-1822.
Katsuyama, "Single-Mode Propagation in 2-Mode Region of Optical Fibre by Using Mode Filter", Electronics Letters, vol. 15, 1979, pp. 442-444.
Harris et al., "Acousto-Optic Tunable Filter", J. of the Optical Society of America, vol. 59, No. 6, Jun. 1969, pp. 744-747.
Alferness et al., "Waveguide Electro-Optic Polarization Transformer", Applied Phys. Letters, vol. 38, No. 9, May 1, 1981, pp. 655-657.

Affiliated with

Also associated with

Rating

Single mode fiber optic single sideband modulator and method of does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Single mode fiber optic single sideband modulator and method of , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Single mode fiber optic single sideband modulator and method of will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-880830