Optical: systems and elements – Optical modulator – Light wave temporal modulation
Patent
1998-03-26
2000-03-07
Epps, Georgia
Optical: systems and elements
Optical modulator
Light wave temporal modulation
359245, 359255, 385 2, 385 8, 385 9, 385 10, G02F 1035
Patent
active
060348097
ABSTRACT:
Optical plasmon-wave attenuator and modulator structures for controlling the amount of coupling between an guided optical signal and a surface plasmon wave. Optical power coupled to the plasmon wave mode is dissipated in varying amounts producing an intensity modulation effect on the optical signal. For electrical modulation, an additional dielectric (or polymer) layer with variable refractive index in optical contact with a metal layer supporting at least one plasmon wave mode is used to perturb or vary the propagation constant of plasmon wave. Propagation constant variation results in the power coupling variation between the surface plasmon wave and the optical wave. The refractive index variation of the dielectric (or polymer) layer can be accomplished via an electro-optic traveling-wave, a lump-element, or any other integrated optics modulator configuration situated to affect the layer, thereby permitting data rates into tens of GHz. Because of the extremely small interaction lengths needed, the optical plasmon-wave modulator is a very compact device which can be implemented on the top of a fiber or as an integrated optical planar structure.
REFERENCES:
patent: 4432614 (1984-02-01), McNeill et al.
patent: 4765705 (1988-08-01), Seymour et al.
patent: 4948225 (1990-08-01), Rider et al.
patent: 4971426 (1990-11-01), Schildkraut et al.
patent: 5067788 (1991-11-01), Jannson et al.
patent: 5157541 (1992-10-01), Schildkraut et al.
patent: 5625729 (1997-04-01), Brown
patent: 5729641 (1998-03-01), Chandonnet et al.
Michael N. Zervas; "Surface Plasmon-Polariton Waves Guided by Thin Metal Films"; Optics Letters; vol. 16, No. 10; May 15, 1991.
Creaney et al.; "Continuous-Fiber Modulator with High-Bandwidth Coplanar Strip Electrodes"; IEEE Photonics Technology Letters; vol.8, No. 3; Mar. 1996; pp. 355-357.
Wilkinson et al.; "Optical Fibre Modulator Using Electro-Optic Polymer Overlay"; Electronics Letters; May 23, 1991; vol. 27, No. 11; pp. 979-981.
Tseng et al.; "Side-polished Fibers"; Applied Optics; vol. 31, No. 18; Jun. 20, 1992; pp. 3438-3447.
Shuto et al; "Optical Intensity Modulators Using Diazo-Dye-Substituted Polymer Channel Waveguides"; IEEE Journal of Quantum Electronics, vol. 31, No. 8, Aug. 1995.
Erdogan; "Fiber Grating Spectra"; Journal of Lightwave Technology; vol. 15, No. 8; Aug. 1997.
Stegeman et al.; "Long-Range Surface Plasmons in Electrode Structures"; Appl. Phys. Lett.; 43(3), Aug. 1, 1993; pp. 221-223.
Kajenski; "Tunable Optical Fiber Using Long-Range Surface Plasmons"; Society of Photo-Optical Instrumentation Engineers; 36(5); 1537-1541; May 1997.
Caldwell et al.; "Surface-Plasmon Spatial Light Modulators Based on Liquid Crystal"; Applied Optics; vol. 31, No. 20; Jul. 10, 1992; pp. 3880-3891.
Anemogiannis et al.; "Optimization of Multilayer Integrated Optics Waveguides"; IEEE 1994; pp. 512-518.
Jung et al.; "Integrated Optics Waveguide Modulator Based on Surface Plasmon Resonance"; Journal of Lightwave Technology; vol. 12, No. 10, Oct. 1994; pp. 1802-1806.
Jung et al.; "Electro-Optic Polymer Light Modulator Based on Surface Plasmon Resonance"; Applied Optics; vol. 34, No. 6; Feb. 20, 1995; pp. 946-949.
Bonch-Bruevich et al.; "Surface Electromagnetic Waves in Optics"; Optical Engineering; vol. 31, No. 4; Apr. 1992; pp. 718-729.
Burke Margaret
Epps Georgia
Verifier Technologies, Inc.
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