Patent · US Expired

Method for producing an optical fiber having low polarization mode dispersion

US7891216B2 · kind B2 · utility

1Cited by

5References

7Claims

0Family size

Assignee

PRYSMIAN CAVI E SISTEMI ENERGIA S.R.L. · IT

Inventors

Franco Cocchini · Salerno, IT
Andrea Mazzotti · Rende, IT

Key dates

Filing date	Dec 30, 2002
Grant date	Feb 22, 2011
Priority date	—
Expiry date	Dec 7, 2025

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC03B2205/06
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A method for producing an optical fiber having low polarization mode dispersion, by the steps of a) providing an optical fiber perform of glass material; b) heating the glass material of an end portion of the optical fiber perform; c) drawing the heated glass material at a drawing speed V to form an optical fiber, the drawn glass material having a viscous zone; and d) applying to the optical fiber a substantially sinusoidal spin, which is transmitted to the viscous zone, the spin function frequency ν, the viscous zone length L and the drawing speed V being such that both a torsion and at least a 50% detorsion are applied to the viscous zone.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.