Optical fiber for optical amplifier
US5351335A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 1992 |
| Grant date | Sep 27, 1994 |
| Priority date | — |
| Expiry date | Aug 25, 2012 |
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..sub.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.