[2] [2] Wang J S,Vogel E M,Snitzer E. Tellurite glass:a new candidate for fiber devices [J].Opt. Matt.,1994,3: 187-203.

[3] [3] Yamada M,Mori A,Kobayashi K,et al. Gain-flattened tellurite-based EDFA with a flat amplification bandwidth of 76 nm [J].IEEE Photon. Technol. Lett.,1998,10(9): 1244-1246.

[4] [4] Mori A,Kobayashi K,et al. Low noise broabband tellurite-based Era3+-doped fiber amplifiers [J].Electronics Lett.,1998,34(9): 887-888.

[5] [5] Mori A,Sakamoto T,Kobayashi K,et al. 1.58 μm broadband erbium-doped tellurite fiber amplifier [J].Journal of Lightwave Technology,2002,20(5): 794-799.

[6] [6] Yamashita S,et al. Performance improvement and optimization of fiber amplifier with a mid-way isolator [J].IEEE Photon. Technol. Lett.,1992,4(11): 1276-1278.

[10] [10] Lopez-Barbero A P,Arellano-Espinoza W A,Fregnito H L,et al. Tellurite-based optical fiber amplifier analysis using the finite-element method [J].Microwave and Optical Technology Lett.,2000,25(2): 103-107.

[11] [11] Giles C R,Desurvire E. Modeling erbium-doped fiber amplifiers [J].IEEE Journal of Lightwave Technology,1991,9(2): 271-283.