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. 05, 2016
Filed:
Feb. 09, 2015
Applicant:
Fujikura Ltd., Tokyo, JP;
Inventor:
Akira Oka, Sakura, JP;
Assignee:
FUJIKURA LTD., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F 1/01 (2006.01); G02B 6/126 (2006.01); F21V 8/00 (2006.01); G02B 6/27 (2006.01); G02B 6/12 (2006.01);
U.S. Cl.
CPC ...
G02B 6/126 (2013.01); G02B 6/0048 (2013.01); G02B 6/2773 (2013.01); G02B 2006/12147 (2013.01);
Abstract
Since a cross section of at least a partial segment of a first core has a step-like shape including a quadrilateral shape of a main part and a quadrilateral shape of a protruding part protruding from the main part, respective effective refractive indices of TE polarized waves in the first core and in the second core differ from each other.