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. 25, 2006
Filed:
Mar. 22, 2002
Applicant:
Katsuyuki Imoto, Tokyo, JP;
Inventor:
Katsuyuki Imoto, Tokyo, JP;
Assignee:
Hitachi Cable, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a polymer waveguide comprising a cladding layer with a low refractive index and a core layer with a high refractive index of a substantially rectangular section covered with the cladding layer, the core layer and a side cladding layer constituting the cladding layer in its portion located on both sides of the core layer are formed of a material comprising a branched polysilane compound containing a silicone compound. By virtue of this constitution, the polymer waveguide has a low loss and causes no significant change in optical characteristics upon a change in ambient temperature.