| 摘要 |
A wide band optical amplifier comprising first and second optical glass amplifying sections, the first optical glass amplifying section comprising (a) a TeO<SB>2</SB> host glass; (b) an effective quantity of erbium dopant: (c) a network modifying metal oxide: and, (d) further ingredients wherein the amounts of (a), (b), (c) and (d) total 100 %. the second optical glass amplifying section comprising (e) a TeO<SB>2</SB> host glass: (f) an effective quantity of thulium dopant: (g) a network modifying metal oxide: and, (h) further ingredients wherein the amounts of (e), (f), (g) and (h) total 100 %. |
