Optical waveguide device and method of making the same

Details Optical waveguide device and method of making the same Optical waveguide device and method of making the same

1990-10-04

1992-05-19

Gonzalez, Frank

Optical waveguides

Integrated optical circuit

385146, G02B 612

Patent

active

051155125

ABSTRACT:
The optical waveguide device comprises an optical waveguide formed as a region having a high index of refraction on a surface or in an interior including the surface of a base plate made of a ferroelectric crystal, and a film covering the surface of said optical waveguide in the direction along the c axis of said crystal phase plate and having electrical conductance higher than that of the optical waveguide. The optical waveguide is formed by thermal diffusion or a chemical reaction. This optical waveguide device is affected little by the optical damage and can be manufactured easily.

REFERENCES:
patent: 4691984 (1987-09-01), Thaniyavarn
patent: 4701008 (1987-10-01), Richard et al.
patent: 4761049 (1988-08-01), Barns et al.
patent: 4917449 (1990-04-01), Granestrand
R. A. Becker and R. C. Williamson, "Photorefractive effects in LiNbO.sub.3 channel waveguides: Model and experimental verification", Appl. Phys. Lett. 47(10), Nov. 15, 1985, pp. 1024-1026.
D. A. Bryan, Robert Gerson, H. E. Tomaschke, "Increased optical damage resistance in lithium niobate", Appl. Phys. Lett., 44(9), May 1, 1984, pp. 847-849.
R. A. Becker, "Methods of characterizing photorefractive susceptibility of LiNbO.sub.3 ", Integrated Optical Circuit Engineering, SPIE vol. 578 (1985).

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