[1] [1] Zhan Shengbao, Zhao Shanghong, Dong Shufu et al.. Effects of suppressing energy transfer upconversion in Er3+/Yb3+ codoped fiber laser[J]. Laser & Infrared, 2002, 32(6): 400～403

[2] [2] M. Laroche, S. Girard, J. K. Sahu et al.. Accurate efficiency evaluation of energy-transfer processes in phosphosilicate Er3+-Yb3+-codoped fibers[J]. J. Opt. Soc. Am. B, 2006, 23(2): 195～202

[3] [3] Pei Xin, Xiang Wanghua, Tan Li et al.. Effect of Yb∶Er codoping on suppressing self-pulsing in Er-doped fiber laser[J]. Acta Optica Sinica, 2004, 24(1): 94～98

[4] [4] Wang Tianshu, Guo Yubin, Li Jun et al.. All-fiber type short cavity Er/Yb co-doped fiber laser[J]. Chinese J. Lasers, 2004, 31(10): 1161～1164

[5] [5] J. K. Sahu, Y. Jeong, D. J. Richardson et al.. A 103 W erbium-ytterbium co-doped large-core fiber laser[J]. Opt. Commun., 2003, 227: 159～163

[6] [6] Y. Jeong, S. Yoo, C. A. Codemard et al.. Erbium∶Ytterbium codoped large-core fiber laser with 297-W continuous-wave output power[J]. IEEE J. Sele. Top. Quantum Electron., 2007, 13(3): 573～579

[7] [7] Guan Bai’ou, Guo Zhuanyun, Liu Zhiguo et al.. Tunable all fiber erbium-doped fiber ring laser with large tuning range[J]. Chinese J. Lasers, 2000, A27(3): 197～199

[8] [8] M. Ibsen, S. Y. Set, G. S. Goh et al.. Broad-band continuously tunable all fiber DFB laser[J]. IEEE Photon. Technol. Lett., 2002, 14(1): 21～23

[9] [9] Jia Baohua, Sheng Qiuqin, Chen Kai et al.. A practical wavelength continuously tunable fiber laser with high-powered and low-noised[J]. Chinese J. Lasers, 2004, 31(2): l33～l36

[10] [10] Li Lijun, Fan Wande, Fu Shenggui et al.. Yb-doped double-clad fiber laser with frequency selecting by double-clad fiber Bragg grating[J]. Acta Optica Sinica, 2005, 25(1): 55～58

[11] [11] M. Auerbach, P. Adel, D. Wandt et al.. 10 W widely tunable narrow linewidth double-clad fiber ring laser[J]. Opt. Express, 2002, 10(2): 139～144

[12] [12] Li Yigang, Hou Guofu, Lü Kecheng et al.. Tunable Yb3+-doped double-cladding fiber laser with a double-grating configuration[J]. Chinese J. Lasers, 2003, 30(11): 969～972

[13] [13] Dong Fajie, Dai Wutao, Hu Shuling et al.. Tunable grating external-cavity Yb3+ double-cladding fiber laser with Littman set-up[J]. Chin. J. Quantum Electronics, 2003, 20(4): 419～421

[14] [14] Liu Shengli, Li Yigang, Gao Yanli et al.. High-power widely tunable Yb-doped photonic crystal fiber Laser[J]. Acta Optica Sinica, 2007, 27(9): 1663～1667

[15] [15] M. Salhi, H. Leblond, F. Sanchez. High power tunable all fiber double-clad Er∶Yb∶silicate fiber laser[J]. Opt. Commun., 2005, 247: 181～185

[16] [16] Zhang Shumin, Lu Fuyun, Yang Xiufeng et al.. Wavelength tunable linear cavity cladding pump Er3+/Yb3+ co-doped fiber laser operating in L-band[J]. Optical and Quantum Electronics, 2005, 37: 417～424

[17] [17] J. W. Kim, P. Jelger, J. K. Sahu et al.. High-power and wavelength-tunable operation of an Er, Yb fiber laser using a volume Bragg grating[J]. Opt. Lett., 2008, 33(11): 1204～1206