Patent · US Active

Optical fiber

US7555186B2 · kind B2 · utility

340Cited by

17References

32Claims

0Family size

Assignee

Draka Comteq B.V. · NL

Inventors

Ivo Flammer · Paris, FR
Louis-Anne de Montmorillon · Paris, FR
Pieter Matthijsse · Hapert, NL

Key dates

Filing date	Dec 4, 2007
Grant date	Jun 30, 2009
Priority date	—
Expiry date	Dec 4, 2027

Classification

Technology area (CPC G)Physics
CPC primaryG02B6/0365
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An improved optical fiber achieves both reduced bending and microbending losses, as well as a much higher Brillouin threshold, as compared to standard transmission fibers. The optical fiber comprises a core including at least two dopants and having a refractive index difference Δn1 with an outer optical cladding, a first inner cladding having a refractive index difference Δn2 with the outer cladding, and a depressed, second inner cladding having a refractive index difference Δn3 with the outer cladding of less than −3×10−3. The radial concentration of at least one of the core dopants varies continuously over the entire core region of the optical fiber.

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