| 摘要 |
Tellurite glass composition including oxides of tellurium, molybdenum, tungsten, zinc and/or bismuth is provided to be applied in manufacturing optical waveguide and/or optical amplifier and to embody wide-band optical amplifier or laser even with a few of excitation light sources by comprising TeO2, MoO3 or WO3, ZnO, Bi2O3 and mono-valent metal oxides. The composition includes: 25-90mol.% of TeO2; 1-55mol.% of T1O3 or 1-40mol.% of T2O3; 0-35mol.% of ZnO; 0-35mol.% of M2O; and 0-20mol.% of Bi2O3. T1 is molybdenum Mo, T2 is tungsten W and M2O is Li2O or Na2O. M2O is fabricated of two or more of metal oxides among Li2O, Na2O, K2O and Cs2O which are metal oxides containing mono-valence electron. Amount of each of M2O and ZnO is not zero(0) at the same time. The composition further contains at least one or two selected from WO3, Ta2O5, PbO, Nb2O3 and Al2O3 in amount of 0-20mol.%. The composition increases full width at half maximum of Raman peak from 200cm-1 to 300cm-3.
|
