Optical switching devices having liquid crystal with splayed mol

Details Optical switching devices having liquid crystal with splayed mol Optical switching devices having liquid crystal with splayed mol

1987-10-02

1989-06-20

Miller, Stanley D.

350331R, 350336, 350340, 350341, 350347V, 350 9615, G02F 113, G02B 642, H01P 110

Patent

active

048404616

ABSTRACT:
An optical switch, e.g. a blocking switch or a coupler switch, has a liquid crystal control element which, in at least one of its control configurations, has a splayed molecular orientation. In a preferred embodiment the liquid crystal is surrounded by chemical control surfaces, e.g. by homeotropically coated control surfaces.

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Applied Physics, vol. 48, No. 1, Jan. 1986, pp. 10-12, American Institute of Physics, New York, US; E. S. Goldburt et al: "Electro-Optical Response of a Liquid-Crystalline Fiber Coupler", pp. 10-12, FIG. 1.
Optics Letters, vol. 11, No. 3, Mar. 1986, pp. 180-182, New York, US; K. Liu et al: "Single-Mode-Fiber Evanescent Polarizer/Amplitude Modulator Using Liquid Crystals", pp. 180-182, FIG. 1.
Applied Physics Letters, vol. 42, No. 4, Feb. 1983, pp. 322-324, American Institute of Physics, New York, US; V. I. Busurin et al: "Switchable Coaxial Optical Coupler Using a Liquid Crystal Mixture", pp. 322-324, FIG. 1.
Ludeman et al--"Liquid Crystal Cell Having Nonuniform Thickness", IBM Technical Disclosure Bulletin--vol. 15, No. 4--Sep. 1972--pp. 1349-1350.

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