Title: Process for producing optical waveguide and product therefrom
Application Number: 88100679 Application Date: 1988.01.08
Publication Number: 1022028 Publication Date: 1988.11.09
Approval Pub. Date: 1994.04.13 Granted Pub. Date: 1994.04.13
International Classifi-cation: C30B9/00;G02B6/10
Applicant(s) Name: E.I.DU Pont DE Nemours and Co. (US) Wilmington Sta Address:
Inventor(s) Name: August Ferretti;John David Bierlein;Lothar Heinric
Attorney & Agent: LU XINHUA
Abstract:
    A process for producing an optical waveguide comprising contacting at least one optically smooth surface of a single crystal of K1xRbxTiOMO4 wherein x is from 0 to 1 and M is P or As with a specified molten salt of at least one of Rb, Cs and Tl at a temperature of from about 200 DEG C to about 600 DEG C for a time sufficient to increase the surface index of refraction at least about 0.00025 with respect to the index of refraction of the starting crystal, and cooling the resulting crystal. The product made thereby and a waveguide device using the same are also disclosed.
Time: 4