TELLURITE GLASS AND OPTICAL AMPLIFIER USING TELLURITE GLASS

摘要

PROBLEM TO BE SOLVED: To provide a tellurite glass capable of adding sufficiently high concentration of Er, showing no shift of the ultraviolet absorption end to longer wave length side, having such heat stability and moldability as required for making a low loss fiber, and having a phonon energy capable of sufficiently efficient light amplification by an exciting light of 980 nm.;SOLUTION: This tellurite glass has a composition comprising 35TeO₂90 (mol%); 10WO₃35 (mol%); 0La₂O₃25 (mol%); 0B₂O₃10 (mol%); and 0M₂O30 (mole%), or a composition comprising 35TeO₂90 (mol%); 10WO₃35 (mol%); 0P₂O₅20 (mol%); 0Al₂O₃15(mol%); and 0M₂O30 (mol%).;COPYRIGHT: (C)2004,JPO&NCIPI