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. 20, 2003
Filed:
Dec. 11, 2000
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
An optical fiber that can sufficiently suppress the generation of four-wave mixing and that can widen the bandwidth of wavelength of signal light. The optical fiber of the present invention has (a) a chromatic dispersion whose absolute value is not less than 8 ps·nm ·km and not more than 15 ps·nm ·km at a wavelength of 1.55 &mgr;m and (b) a dispersion slope whose absolute value is not more than 0.05 ps·nm ·km at a wavelength of 1.55 &mgr;m. It is more desirable that the optical fiber have (a) a chromatic dispersion whose absolute value is not less than 8 ps·nm ·km and not more than 12 ps·nm ·km at a wavelength of 1.55 &mgr;m, (b) a dispersion slope whose absolute value is not more than 0.03 ps·nm ·km at a wavelength of 1.55 &mgr;m, (c) a chromatic dispersion whose absolute value is not less than 5 ps·nm ·km at wavelengths between 1.45 and 1.65 &mgr;m, (d) an effective area not less than 45 &mgr;m at a wavelength of 1.55 &mgr;m, and (e) a two-meter cutoff wavelength not less than 1.40 &mgr;m.