Patent · US Active

Low loss optical fiber designs and methods for their manufacture

US8295668B2 · kind B2 · utility

1Cited by

6References

7Claims

0Family size

Assignee

OFS Fitel, LLC · US

Inventors

Lance Gibson · Plymouth, US
David W. Peckham · Lawrenceville, US
Robert Lingle, Jr. · Norcross, US

Key dates

Filing date	Oct 7, 2011
Grant date	Oct 23, 2012
Priority date	—
Expiry date	Oct 7, 2031

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC03B2203/22
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The specification describes an improved optical fiber produced by a hybrid VAD/MCVD process. The core of the fiber is produced using VAD and the inner cladding layer has a depressed index and is produced using MCVD. In preferred embodiments, the optical power envelope is essentially entirely contained in VAD produced core material and the MCVD produced depressed index cladding material. Optical loss is minimized by confining most of the optical power to the VAD core where OH presence is low, as well as by maximizing the optical power in the un-doped silica region. The MCVD substrate tube material is essentially devoid of optical power.

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