Optical apparatus

Optical: systems and elements – Optical modulator – Having particular chemical composition or structure

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359296, 359254, 359256, 385 3, 349196, G02F 100

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056402678

ABSTRACT:
An electro-optic material has first and second regions formed therein. The optic axes of the first and second regions are antiparallel and define a domain inversion pattern. The difference in refractive index between the first and second regions is a function of an electric field applied thereto. The difference in refractive index enables spatial light phase modulators and refractive optical devices having electrical control to be formed.

REFERENCES:
patent: 3814502 (1974-06-01), Barkley
patent: 3819248 (1974-06-01), Takeda et al.
patent: 3832033 (1974-08-01), Furuhata et al.
patent: 3838906 (1974-10-01), Kumada
patent: 3936146 (1976-02-01), Kumada et al.
patent: 4085576 (1978-04-01), Deverin
patent: 4576441 (1986-03-01), Kubick
patent: 4615588 (1986-10-01), Goldhar et al.
patent: 5264951 (1993-11-01), Takanashi et al.
patent: 5278924 (1994-01-01), Schaffner
patent: 5305136 (1994-04-01), Smith
patent: 5317446 (1994-05-01), Mir et al.
patent: 5349466 (1994-09-01), Delacourt et al.
Search Report for British Appl. 9404001.1, dated May 31, 1994.
Yamamoto, "Quasi-Phase-Matched Second Harmonic Generation in a LiTaO.sub.3 Waveguide", IEEE Journal of Quantum Electronics, vol. 28, No. 9, Sep. 1992, pp. 1909-1914.
Search Report for European Appl. 95301319.0. mailed Sep. 4, 1995.
Yoshino et al, "Characteristics of Ferroelectric Liquid Crystal Sandwiched Between Drawn and Poled Polyvinylidene Fluoride Thin Films," Japanese Journal of Applied Physics, vol. 27, No. 2, Feb. 1988, pp. L129-L131.
Furuhata et al, "New Liquid-Crystal Method for Revealing Ferroelectric Domains," Appl. Phys. Lett., vol. 23, No. 7, Oct. 1, 1973, pp. 361-362.
Balakshii et al, "Amplitude Modulation of Light by Diffraction on Ba.sub.2 . . . " Sov. J. quantum Electron, 8(9), Sep. 1978, pp. 1078-1081.
Guo et al, "Wide Sideband Generation by Quasi-Velocity-Matched Electro-optic Modulator . . . ", SPIE, vol. 2150/243-246, (Jan. 24, 1994).
Sueta et al, "High Speed Guided-Wave Optical Modulators", Journal of Optical Communications, vol. 3, (1982), Jun., No. 2, Berlin, pp. 52-58.
Search Report for European Appl. 95301319.0, mailed Jun. 26, 1995.
Mataki, "Low Voltage Optical Modulator Using Electrooptically Induced Phase Gratings", Applied Optics, vol. 12, No. 7, Jul., 1973, pp. 1472-1476.

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