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:
Dec. 02, 1997
Filed:
Dec. 26, 1995
Applicant:
Inventor:
Kaoru Okaniwa, Hitachi, JP;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ;
U.S. Cl.
CPC ...
385143 ; 385123 ; 385129 ;
Abstract
A waveguide device comprising at least a waveguiding layer, a cladding layer and, optionally, an adhesion-enhancing layer is disclosed. By using specific fluorinated polyimides as materials for each of the layers of the waveguide device, the process for producing the waveguide device is simplified, the production cost is reduced, and the flexibility is imparted to the waveguide device, which are not achieved in a quartz-type waveguide. Also, a single mode, a low loss at 1.3 micron band and a high moisture-resistance which are not achieved by conventional plastic-type waveguide are possible.