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:
Jul. 01, 2003
Filed:
Mar. 12, 2002
Manabu Saitou, Sakura, JP;
Shoichiro Matsuo, Sakura, JP;
Fujikura Ltd., Tokyo, JP;
Abstract
A dispersion-compensating fiber is provided that can compensate chromatic dispersion of a DSF in the L-band (wavelength of 1.565 &mgr;m to 1.625 &mgr;m). The dispersion-compensating fiber is provided with a central core segment, an intermediate core segment, a ring core segment, and a clad, which are provided in this sequence concentrically from the inside, and has refractive index profile such that the refractive indices of these segments satisfy the relationship of intermediate core segment<clad≦ring core segment<central core segment. When a dispersion-shifted fiber having a zero dispersion wavelength of 1.55 &mgr;m±0.05 &mgr;m has been compensating, the residual chromatic dispersion in all or part of the L-band is within ±1.5 ps/nm/km.