Optical fiber fusion splice having a controlled mode field diameter expansion match

US6742939B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Craig R. Sykora · New Richmond, US
• James Onstott · Beldenville, US
• Mark T. Anderson · Woodbury, US
• Craig R. Schardt · Saint Paul, US
• Lawrence J. Donalds · Windom, US
• Alessandra Chiareli · Saint Paul, US

Key dates

• Filing date: May 30, 2002
• Grant date: Jun 1, 2004
• Expiry date: Jun 4, 2022

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S3/06754
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A fusion splice including a first optical fiber having a first MFD and a first MFD expansion rate. The splice further includes a second fiber having a second MFD and a second MFD expansion rate, wherein the second MFD is lower than the first MFD. The second fiber comprises a core, a cladding radially surrounding the core, and a zone of high-concentration of fluorine between the core and the cladding. The rate of MFD expansion of the first fiber is less than the rate of MFD expansion of the second fiber during the fusion splicing operation.