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:
Dec. 14, 2010
Filed:
Dec. 24, 2002
Antonio Collaro, Torre del Greco, IT;
Giuseppe Ferri, Cava dei Tirreni, IT;
Alfonso Pannullo, Battipaglia, IT;
Antonio Collaro, Torre del Greco, IT;
Giuseppe Ferri, Cava dei Tirreni, IT;
Alfonso Pannullo, Battipaglia, IT;
Prysmian Cavi E Sistemi Energia S.R.L., Milan, IT;
Abstract
A process for making a non-zero dispersion shifted optical fiber having low splice loss and low attenuation and to an optical fiber produced by this process. A reduction of the splice loss is observed with decreasing drawing tension. The optical fiber has a core region that includes three segments and an inner cladding segment, each having a maximum refractive index percent difference, Δdelta%, i=0-3, the subscriptreferring to a particular refractive index, the core segments being selected such that Δdelta%>Δdelta%>Δdelta%≧0 and Δdelta%>Δdelta%≧0. Optical fibers exhibiting low splice loss were drawn at tensions not larger than 150 g, preferably not larger than 100 g.