Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1992-06-17
1994-09-13
Sikes, William L.
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
359 93, 359 94, 359240, 356346, 356351, 25022717, 385 30, 385130, 385 14, G02F 11335, G02F 1137, G02F 101
Patent
active
053473779
ABSTRACT:
A waveguide optical device having a guide member for propagation of light in a longitudinal direction. The guide member has upper and lower boundaries. A mass of birefringent material is disposed proximal to the guide member. The birefringent material has molecular dipoles subject to alignment by an imposed electrical field. The birefringent mass is overlapped by the optical field of the propagated light. An upper electrode is disposed in spaced relation to the birefringent mass. A lower electrode is disposed in spaced relation to the guide member. The electrodes have the capability of imposing an alternating current voltage across the birefringent mass to rotate the molecular dipoles of the birefringent mass in a plane defined by the normal to the guide member and the propagation vector of the light. The boundaries and the electrodes define an upper isolation zone between the upper electrode and the upper boundary, a guide path between the boundaries, and a lower isolation zone between the lower boundary and the lower electrode. The guide path has an effective index of refraction greater than the effective indexes of refraction of the isolation zones.
REFERENCES:
patent: 3963310 (1976-06-01), Giallorenzi et al.
patent: 4309110 (1982-01-01), Tumerman
patent: 4413908 (1983-11-01), Abrams et al.
patent: 4595292 (1986-06-01), Amodeo et al.
patent: 4721352 (1988-01-01), Sorin et al.
patent: 4722583 (1988-02-01), Stewart
patent: 4725141 (1988-02-01), Georgiou et al.
patent: 4779959 (1988-10-01), Saunders
patent: 4795233 (1989-01-01), Chang
patent: 4848877 (1989-07-01), Miller
patent: 4889407 (1989-12-01), Markle et al.
patent: 4909626 (1990-03-01), Purvis et al.
patent: 4928007 (1990-05-01), Furstenau et al.
patent: 4936645 (1990-06-01), Yoon et al.
patent: 4969742 (1990-11-01), Falk et al.
patent: 5007695 (1991-04-01), Chang
patent: 5007696 (1991-04-01), Thackara et al.
patent: 5059026 (1991-10-01), Zoechbauer
patent: 5120131 (1992-06-01), Lukosz
patent: 5157458 (1992-10-01), Wagner et al.
Okamura, Y. et al., "Low-Voltage Driving in Nematic Liquid Crystal Overlayered Waveguide", Journal of Lightwave Technology, vol. LT-4, No. 3, (Mar. 1986), pp. 360-363.
Okamura, Y. et al., "Electrooptic Leaky Anisotrolic Waveguides Using Nematic Liquid Crystal Overlayers", Journal of Lightwave Technology, vol. LT-2, No. 3, (Jun. 1984), pp. 292-295.
Green, M. et al., "Flat-Panel Liquid-Crystal Waveguide Display", Proceeding of the Society for Information Display, vol. 26, No. 2, (1985), pp. 163-165.
Terui, H. et al., "8.times.8 Optical Waveguide Switch Using Liquid Crystal", SPIE vol. 517-Integrated Optical Circuit Engineering, (1984), pp. 267-274.
Verly, P. G., "Low Loss Liquid-Crystal-Clad Waveguide Switch with a Large Angular Separation of the Optical Beam", Canadian Journal of Physics, vol. 65, (1987), pp. 476-483.
Hu, C. et al., "Optical Deflection in Thin-Film Nematic-Liquid-Crystal Waveguides", IEEE Journal of Quantum Electronics, vol. QE-10, No. 2, (Feb. 1974), pp. 218-222.
C. Hu, et. al., "Field-Realigned Nematic Liquid Crystal Optical Waveguides", IEEE Journal of Quantum Electronics, vol. QE-10, No. 7, (Jul. 1974), pp. 556-562.
Okamoto, T. et. al., "A Photodiode Array Fourier Transform Spectrometer Based on a Birefringent Interferometer", Applied Spectroscopy, vol. 40, No. 5, (1986), pp. 692-695.
Itoh, K. et. al., "Liquid-crystal imaging in Fourier-spectrometer array,"Optics Letters, vol. 15, No. 11, (Jun. 1, 1990), pp. 652-654.
Okamoto, T. et. al., "Fourier transform spectrometer with a self-scanning photodiode array", Applied Optics, vol. 23, No. 2, (Jan. 15, 1984), pp. 269-273.
Matsui, S. et al., "An FT, visible microscope, photodiode array spectrometer", American Laboratory, (Aug. 1989), pp. 30-35.
Stroke, G. W., et. al., "Fourier-transform spectroscopy using holographic imaging without computing and with stationary interferometers", Physics Letters, vol. 16, No. 13, (Jun. 1, 1965), pp. 272-274.
Suni, P. J. et. al., "Lasing Characteristics of Ytterbium, Thulium and Other Rare-Earth Doped Silica based Fibers", Fiber Laser Sources and Amplifiers, SPIE, vol. 1171, (1989), pp. 244-260.
Reekie, L. et. al., "Tunable Single-Mode Fiber Lasers", Journal of Lightwave Technology, vol. LT-4, No. 7, (Jul. 1986), pp. 956-960.
Kitagawa, T. et. al., "Guided-Wave Laser based on Erbium-Doped Silica Planar Lightwave Circuit", Electronics Letters, vol. 27, No. 4, (Feb. 14, 1991), pp. 334-335.
Liu Hsue-Yang
Prince Eric T.
Revelli, Jr. Joseph F.
Switalski Steven C.
Bailey Clyde E.
Eastman Kodak Company
Parker Kenneth
Sikes William L.
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