Patent ID: 7551348

Claim:
A tellurite glass composite for increasing a FWHM (full-width at half maximum) of Raman scattering peak centered at 700-800 cm −1 , comprising an entire composite comprising 25 (mol %)≦TeO 2 ≦90 (mol %), 1 (mol %)≦T 1 O 3 ≦55 (mol %) or 1 (mol %)≦T 2 O 3 ≦40 (mol %), 0 (mol %)≦ZnO≦35 (mol %), 0 (mol %)≦M 2 O≦35 (mol %), and 0 (mol %)≦Bi 2 O 3 ≦20 (mol %), wherein T 1 is a transition metal Mo, T 2 a transition metal W, M 2 O consists of Li 2 O, Na 2 O, and K 2 O, and the amounts of M 2 O and ZnO are not simultaneously “0”.