The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 27, 1976
Filed:
Dec. 06, 1974
Edwin Arthur Chandross, Berkeley Heights, NJ (US);
Coralie Anne Pryde, Morristown, NJ (US);
Walter John Tomlinson, III, Holmdel, NJ (US);
Heinz Paul Weber, Middletown, NJ (US);
Bell Telephone Laboratories, Incorporated, Murray Hill, NJ (US);
Abstract
A technique for the fabrication of integrated optical circuits is described wherein a transparent polymer film, which is doped with a polynuclear aromatic thiol having higher index of refraction than the polymer, is deposited from a liquid solution on a smooth substrate. Upon selective exposure to radiation there is a substantial reduction or elimination of the mobility and volatility of the dopant in the polymer matrix, a phenomenon known as 'photolocking'. The described class of dopant permits the attainment of higher resolution than previously reported, as well as the preparation of optical direction couplers having higher coupling strengths than those of the prior art.