Optical waveguides – Planar optical waveguide – Thin film optical waveguide
Patent
1991-08-20
1992-09-22
Ullah, Akm E.
Optical waveguides
Planar optical waveguide
Thin film optical waveguide
385 14, 156624, G02B 612
Patent
active
051504472
ABSTRACT:
An optical waveguide, a dielectric device and method for fabricating such devices in which a substrate is polarized in a first direction and a dielectric thin film is formed on the surface of the substrate and polarized in the opposite direction to the substrate. Parallel grooves may be formed in the substrate. In one embodiment, a first dielectric thin film is formed on the substrate and is formed with grooves and is polarized in the same direction as the substrate. Then, a second dielectric thin film is formed over the first dielectric thin film and it is polarized in a direction which is opposite to the substrate and the first thin film.
REFERENCES:
patent: 3922062 (1975-11-01), Uchida
patent: 4679892 (1987-07-01), Haisma et al.
patent: 4846541 (1989-07-01), Miura et al.
patent: 5039187 (1991-08-01), Ballman et al.
Article Entitled "Fabrication of Periodically Domain-Inverted Channel Waveguide in Lithium Niobate For Second Harmonic Generation" Journal of Lightwave Technology, vol. 7, No. 10 Oct. 1989, pp. 1597 to 1600.
Article "Domain and Dislocation Structure of Lithium Niobate Epitaxial Films" Soviet Solid State 29(9), Sep. 1987 pp. 1578-1580.
Japanese 60083499.
Japanese Publication JP 1232812.
Article entitled "Partial Domain Inversion In LiNbO.sub.3 Plates And Its Application to Piezoelectric Devices", 1986 Ultrasonic Symposium, pp. 719-722.
Saitoh Masaki
Tamada Hitoshi
Taneyama Yukie
Yamada Atsuo
Heartney Phan T.
Sony Corporation
Ullah Akm E.
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