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:
Jan. 02, 2018
Filed:
Aug. 13, 2013
Applicant:
Fujikura Ltd., Tokyo, JP;
Inventors:
Assignee:
FUJIKURA LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/28 (2006.01); G02B 6/125 (2006.01); G02B 6/14 (2006.01); G02F 1/225 (2006.01); G02B 6/122 (2006.01); G02B 6/293 (2006.01); G02F 1/21 (2006.01);
U.S. Cl.
CPC ...
G02B 6/2821 (2013.01); G02B 6/122 (2013.01); G02B 6/125 (2013.01); G02B 6/14 (2013.01); G02F 1/225 (2013.01); G02F 1/2255 (2013.01); G02B 6/2813 (2013.01); G02B 6/2935 (2013.01); G02F 2001/212 (2013.01);
Abstract
An optical waveguide device includes: a mode splitter including a main waveguide in which lights can be propagated in at least two propagation modes with different propagation orders and a subsidiary waveguide which includes a coupling section disposed in parallel with the main waveguide at a certain distance away from the main waveguide so as to constitute a directional coupler and is capable of splitting at least one propagation mode out of the two or more propagation modes from the main waveguide. Also, n/nwhich is a refractive index ratio between a core and a cladding which constitute the main waveguide and the subsidiary waveguide is in a range of 101% to 250%.