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:
Jul. 26, 2005
Filed:
Apr. 15, 2002
Applicants:
Alexei Glebov, San Bruno, CA (US);
Shinya Sasaki, San Jose, CA (US);
Michael Lee, San Jose, CA (US);
Inventors:
Alexei Glebov, San Bruno, CA (US);
Shinya Sasaki, San Jose, CA (US);
Michael Lee, San Jose, CA (US);
Assignee:
Fujitsu Limited, Kawasaki, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B003/19 ;
U.S. Cl.
CPC ...
Abstract
An optical coupling structure useful in optical switching devices is described. The optical coupling structure includes a core layer for guiding a light beam exiting a core layer of an optical fiber into a slab waveguide layer. The core layer of the optical coupling structure avoids a power loss of a light beam and establishes an adiabatic coupling. The core layer of the optical coupling structure may have a tapered surface.