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, 2024
Filed:
Nov. 26, 2021
Applicant:
Furukawa Electric Co., Ltd., Tokyo, JP;
Inventors:
Assignee:
FURUKAWA ELECTRIC CO., LTD., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/02 (2006.01); G02B 6/036 (2006.01);
U.S. Cl.
CPC ...
G02B 6/02395 (2013.01); G02B 6/02004 (2013.01); G02B 6/0365 (2013.01); G02B 6/03627 (2013.01);
Abstract
An optical fiber includes: a core made of silica-based glass; a cladding configured to cover an outer circumference of the core and made of silica-based glass having a refractive index smaller than a maximum refractive index of the core; and a coating configured to cover an outer circumference of the cladding. The cladding has an outer diameter of 120 μm or smaller, a mode field diameter at a wavelength of 1310 nm is 8.6 μm to 9.2 μm, an effective cut-off wavelength is 1260 μm or smaller, and a bending loss at a wavelength of 1550 nm in a case of bending at a diameter of 20 mm is 0.75 dB/turn or smaller.