Patent · US Expired

Method of manufacturing optical fibres

US4871383A · kind A · utility

5Cited by

4References

6Claims

0Family size

Assignee

U.S. Philips Corporation · US

Inventors

Peter Klaus Bachmann · Würselen, DE
Hans-Jurgen E. Hagemann · Aachen, DE
Jacques Warnier · Eijsden, NL
Howard J. C. Wilson · Aachen, DE

Key dates

Filing date	Jun 14, 1988
Grant date	Oct 3, 1989
Priority date	—
Expiry date	Jun 14, 2008

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC03B2203/30
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

Polarization-retaining optical fibres are manufactured according to the PCVD method, in which on the inside of a glass tube (1) and, simultaneously on at least two glass rods (2, 3) which are arranged inside the glass tube such that their longitudinal axes run parallel to the longitudinal axis of the glass tube, glass is deposited in layers and the glass rods are removed from the glass tube upon completion of the glass deposition process. Alternatively, a single glass rod, the radial dimensions of which in two mutually perpendicular directions are in a ratio unequal to one, is arranged in a glass tube such that its longitudinal axis coincides with the longitudinal axis of the glass tube.

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