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Er~(3+)-doped phosphor-tellurite glass for broadband short-length Er~(3+)-doped fiber amplifier(EDFA)is fabricated and characterized.The differential value(△T)of onset crystalline temperature(T_x)and glass transition temperature(T_g)is 206°C.The stimulated emission cross section of Er~(a+)is calculated from ab- sorption spectrum by McCumber theory and is 0.87×10~(-20)cm~2 at 1532 nm.A broad 1.5-μm fluorescence spectrum with 54-nm full-width at half maximum(FWHM)is demonstrated.Especially,the maximum phonon energy of undoped phosphor-tellurite glass is 1100 cm~(-1),which restricts the upconversion lumines- cence.It is possible to pump efficiently at 980 nm.These results indicate Er~(3+)-doped phosphor-tellurite glass is suitable for fabricating broadband short-length EDFA.
Er 3+ -doped phosphor-tellurite glass for broadband short-length Er ~ (3 +) - doped fiber amplifier (EDFA) is fabricated and characterized.The differential value (△ T) of onset crystalline temperature (T_x) and glass transition temperature (T_g) is 206 ° C. The stimulated emission cross section of Er ~ (a +) is calculated from the Abs sorption spectrum by McCumber theory and is 0.87 × 10 ~ (-20) cm ~ 2 at 1532 nm.A broad 1.5-μm fluorescence spectrum with 54-nm full-width at half maximum (FWHM) is demonstrated. Especially for the maximum phonon energy of undoped phosphor-tellurite glass is 1100 cm -1, which restricts the upconversion lumines- cence .It is possible to pump efficiently at 980 nm. These results indicate Er ~ (3 +) - doped phosphor-tellurite glass is suitable for fabricating broadband short-length EDFA.