Optical fiber for optical amplifier
US5486947A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 6, 1994 |
| Grant date | Jan 23, 1996 |
| Priority date | — |
| Expiry date | May 6, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/173
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Fluoride glass-based optical fiber for an optical amplifier which contains rare earth metal ions in the core glass has a relative refractive index difference .DELTA.n between the core and the cladding of 1.4% or more. The core glass contains PbF.sub.2 in a proportion of 25 mol % or less based on the total composition of the core glass. The fluoride glass is doped with rare earth metal ions, and part of the fluorine in the glass may be substituted by at least one halogen Pr.sup.3+, Pr.sup.3+ --Yb.sup.3+, Pr.sup.3+ --Nd.sup.3+, or Pr.sup.3+ --Er.sup.3+ can be doped as the rare earth metal ions. Chlorine, bromine or iodine may be used as the halogen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.