Optical waveguides – Planar optical waveguide – Thin film optical waveguide
Patent
1998-07-20
2000-06-20
Palmer, Phan T. H.
Optical waveguides
Planar optical waveguide
Thin film optical waveguide
2 8, 2131, 2 14, G02B 610
Patent
active
060787171
ABSTRACT:
The invention intends to provides an optical waveguide device having a structure that satisfies the low drive voltage characteristic and the low propagation loss characteristic at the same time. The optical waveguide device contains a conductive or semiconductive lower electrode, an epitaxial or single orientational buffer layer provided on the lower electrode, an epitaxial or single orientational optical waveguide provided on the buffer layer, and an upper electrode of a conductive thin film or a semiconductive thin film, provided on the optical waveguide. The optical waveguide device is able to modulate, switch, or deflect incident light beams guided into the optical waveguide by applying a voltage between the upper electrode and the lower electrode.
REFERENCES:
patent: 5007696 (1991-04-01), Thackara et al.
patent: 5414791 (1995-05-01), Ermer et al.
A. Yariv, Optical Electronics, New York, Rinehart and Winston, 4.sup.TH Ed., pp. 336-339, 1991.
Q. Chen, et al., "Guided-Wave Electro-Optic Beam Deflector Using Domain Reversal in LiTaO.sub.3 ", Journal of Lightwave Technology, vol. 12, No. 8, pp. 1401-1403, 1994.
K. Hamamoto et al., "First 8.times.8 Semiconductor Optical Matrix Switches using GaAs/AIGaAs Electro-Optic Guided Wave Directional Couplers", Electronics Letters, vol. 28, No. 5, pp. 441-443, 1992.
Morikawa Takashi
Moriyama Hiroaki
Nakamura Shigetoshi
Nashimoto Keiichi
Osakabe Eisuke
Fuji 'Xerox Co., Ltd.
Palmer Phan T. H.
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