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:
Oct. 22, 1991
Filed:
Jun. 29, 1990
Cheng-ko J Sun, Worthington, OH (US);
Shigeki Sakaguchi, Worthington, OH (US);
Tadashi Miyashita, Upper Arlington, OH (US);
Photonic Integration Research, Inc., Columbus, OH (US);
Abstract
An integrated optoelectrical circuit is described. An apparatus and method are disclosed whereby planar optical waveguides are formed on Al.sub.2 O.sub.3, other ceramics, silicon, silica, and other glass substrates that are thin film wired. An interface coating of silicon or silicon dioxide is applied to a surface of the thin film wired substrates using a low temperature deposition process such as sputtering or chemical vapor deposition. Glass cladding and core layers are deposited onto the thin film coating using a flame hydrolysis deposition technique. With this invention, channel waveguides and integrated optical circuits can be formed on a common substrate with electronic IC chips.