Optical waveguide substrate, optical waveguide device, second ha

Details Optical waveguide substrate, optical waveguide device, second ha Optical waveguide substrate, optical waveguide device, second ha

1997-09-03

1999-11-23

Lee, John D.

Optical: systems and elements

Optical frequency converter

Dielectric optical waveguide type

359328, 385122, 385132, G02F 137

Patent

active

059910674

ABSTRACT:
An optical waveguide substrate having a substrate made of ferroelectric optical single crystal and a ridge portion projected from a main plane of the substrate, has a construction such that the ridge portion has a base portion made of ferroelectric optical single crystal and an optical waveguide formed on the base portion. The optical waveguide substrate is formed by forming at least one optical waveguide layer on a main plane of a substrate made of ferroelectric optical single crystal, and mechanically working main planes of the optical waveguide layer and the substrate to form a ridge portion projected from the main plane of the substrate. The optical waveguide substrate can reduce a light transmission loss, increase an extinction ratio, and improve an electric field applying efficiency.

REFERENCES:
patent: 5172385 (1992-12-01), Forrest et al.
patent: 5274727 (1993-12-01), Ito et al.
patent: 5333231 (1994-07-01), Fukuda et al.
patent: 5363462 (1994-11-01), Hung et al.
patent: 5866200 (1999-02-01), Yoshino et al.
"Ridge Type Optical Waveguide", OQE77-57, Oct. 24, 1977, Institute of Electronics, Japanese w
o translation.

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