Optical properties and local structure of rare-earth-doped amplifier for broadband telecommunication

Abstract

Optical properties and local structure of rare-earth ions in glasses for broadband optical fiber amplifiers are reviewed. In a series of Er-doped glasses with broad 1.5 μm emission, heavy-metal oxide glasses are attracting great interest. Anomalous compositional dependences of optical properties of Er-doped antimony silicate glasses are shown. Structural implication of small compositional dependence observed for the Judd–Ofelt Ω 6 parameter and local phonon energy are discussed.