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:
Feb. 02, 2016
Filed:
Oct. 31, 2013
Fujikura Ltd., Tokyo, JP;
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Osaka Prefecture University Public Corporation, Sakai-shi, Osaka, JP;
National University Corporation Shimane University, Matsue-shi, Shimane, JP;
Shoichiro Matsuo, Sakura, JP;
Katsuhiro Takenaga, Sakura, JP;
Kentaro Ichii, Sakura, JP;
Hirotaka Ono, Mito, JP;
Kyouzou Tsujikawa, Tsukuba, JP;
Makoto Yamada, Sakai, JP;
Hiroji Masuda, Matsue, JP;
FUJIKURA LTD., Tokyo, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo, JP;
OSAKA PREFECTURE UNIVERSITY PUBLIC CORPORATION, Sakai-shi, Osaka, JP;
NATIONAL UNIVERSITY CORPORATION SHIMANE UNIVERSITY, Matsue-shi, Shimane, JP;
Abstract
The first claddinghas a two-layer structure formed of a solid inner layerA passed through the center axis of the first claddingand an outer layerB enclosing the inner layerA and the plurality of coreswith no gap. A refractive index nof the coreis provided higher than refractive indexes nand nof the inner layerA and the outer layerB, the refractive indexes nA and nB of the inner layerA and the outer layerB are provided higher than a refractive index nof the second cladding, and the refractive index nof the inner layerA is provided lower than the refractive index nof the outer layerB.