Optical fiber for optical amplifier

Details Optical fiber for optical amplifier Optical fiber for optical amplifier

1994-05-06

1996-01-23

Moskowitz, Nelson

Optical: systems and elements

Optical amplifier

Optical fiber

359343, 385122, 385142, 372 6, H01S 317

Patent

active

054869471

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.

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