Abstract
The host glasses with composition 75TeO(2)-10Nb(2)O(5)-10ZnO-5PbO doped with different concentration of xEr(2)O(3) have been prepared. The structure of the glasses through Raman spectroscopy from 200 to 1300 nm was investigated. The Raman gain coefficients of these glasses evaluated from spontaneous Raman scattering experimental result by using 532 nm Laser type Diode-pumped, solid state (DPSS). The present glasses have broader bandwidths of gain amplification from 225 to 1125 cm(-1). The amplification band width of present glasses is 4.9 times largest than the silica glasses. This indicates that this glass can be use as a potential for fiber Raman amplifier.