Patent · US Active

Preform for an optical waveguide and a fiber with non-circular core

US10131565B2 · kind B2 · utility

0Cited by

4References

11Claims

0Family size

Assignee

j-plasma GmbH · DE

Inventors

Ralitsa Rosenow · Jena, DE
Roland Heinze · Munich, DE
Jörg Kötzing · Jena, DE
Robert Hanf · Eisenberg, DE
Lothar Brehm · Jena, DE

Key dates

Filing date	Apr 15, 2015
Grant date	Nov 20, 2018
Priority date	—
Expiry date	Nov 29, 2036

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC03B2205/72
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

Preform for an optical waveguide containing a core with a non-circular geometry and at least one cladding layer, in which the dopand concentration of the cladding layer is increased compared to the dopand concentration of a preform with circular core geometry and identical NA. A method for the production of a preform for an optical fiber is provided. An optical waveguide with a nominal dopand concentration of c(eff)×F≤c(nom) in at least one cladding layer is also provided.

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