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:
May. 16, 2006
Filed:
Sep. 08, 2003
Applicant:
Fumio Takahashi, Tokyo, JP;
Inventor:
Fumio Takahashi, Tokyo, JP;
Assignee:
The Furukawa Electric Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A dispersion shifter fiber, which has zero dispersion wavelength on a long wavelength side beyond 1640 nm, a wavelength dispersion of −1.0 to −10.0 ps/nm/km at a wavelength range of 1530–1625 nm, a dispersion slope of less than 0.07 ps/nm/km, a polarization mode dispersion of not more than 0.1 ps/(km)at a wavelength of 1550 nm, and a core cross-sectional area of 40–70 μmat the wavelength of 1550 nm.