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:
Mar. 17, 2009
Filed:
Dec. 05, 2007
Shoichiro Matsuo, Sakura, JP;
Kuniharu Himeno, Sakura, JP;
Shoichiro Matsuo, Sakura, JP;
Kuniharu Himeno, Sakura, JP;
Fujikura Ltd., Tokyo, JP;
Abstract
A single-mode optical fiber has a prescribed mode field diameter (MFD(μm)) at a first wavelength λ, in which a bending loss when measured at a second wavelength λ(μm) and wound with a bending radius r (mm) is L(dB) for one bending, a connector/splice loss with an optical fiber that has a prescribed mode field diameter MFD(μm) at the first wavelength λis L(dB) for one connection/splice point at the second wavelength λ(μm), and an mode field diameter dependence of a total loss coefficient calculated by a formula (1) has a local minimal value in a range of MFD±0.5 μm, with the formula (1) being as follows:,  (1)=1,  (2)w>0, w>0,  (3)where wand win the formula (1) represent dimensionless weighting factors and are set within a range that satisfies the formulas (2) and (3).