Abstract
In this paper, P 2 O 5 has been introduced into Er 3+ -doped telluride glasses. Emission and absorption spectra of the new glass are studied. It is observed that the nonradiative relaxation rate of 4 I 11/2 – 4 I 13/2 transitions and the 1.5 μm emission efficiency increases with the increase in P 2 O 5 content. The nonradiative relaxation rate of 4 I 11/2 – 4 I 13/2 transition in a glass with 7 mol% P 2 O 5 is four times greater than that without P 2 O 5 . The P 2 O 5 additives can also increase the thermal stability of the telluride glass. The present results indicate that telluride glasses with P 2 O 5 addition may be a promising candidate medium for broadband erbium-doped fiber amplifiers.
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