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:
Oct. 26, 2021
Filed:
Jul. 31, 2018
Applicant:
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Inventors:
Azusa Urushibara, Tsukuba, JP;
Taiji Sakamoto, Tsukuba, JP;
Masaki Wada, Tsukuba, JP;
Takashi Yamamoto, Tsukuba, JP;
Kazuhide Nakajima, Tsukuba, JP;
Takayoshi Mori, Tsukuba, JP;
Assignee:
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/02 (2006.01); H01S 3/10 (2006.01); H04B 10/2581 (2013.01);
U.S. Cl.
CPC ...
G02B 6/02323 (2013.01); H01S 3/10007 (2013.01); H04B 10/2581 (2013.01);
Abstract
The optical fiber of the present invention includes a core, and a cladding that is provided on an outer periphery of the core and has a refractive index lower than a refractive index of the core region. In the optical fiber of the present invention, a V value representing a normalized frequency of an LPmode is greater than or equal to 4.8 and less than or equal to 6.4.