Optical waveguides – Directional optical modulation within an optical waveguide – Electro-optic
Patent
1993-11-22
1994-12-06
Gonzalez, Frank
Optical waveguides
Directional optical modulation within an optical waveguide
Electro-optic
359332, 385 30, 385 40, 385 41, 385 42, 385 50, G02F 1313, G02B 626
Patent
active
053718127
ABSTRACT:
Down-sized optical directional coupler with high performance and reduction of power includes a LiTaO.sub.3 monocrystal substrate, at least two optical waveguides of a LiNbO.sub.3 monocrystalline thin film formed close to and parallel to each other, and means for changing a refractive index of the optical waveguide provided on at least one of the optical waveguides, thereby obtaining a matching of a lattice constant between the LiTaO.sub.3 monocrystal substrate and the LiNbO.sub.3 monocrystalline thin film.
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Gonzalez Frank
Ibden Co., Ltd.
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