[1] [1] Liu Jiang, Xu Jia, Wang Qian, et al.. High-pulse-energy passively mode-locked 2.0 μm thulium-doped ultrafast all-fiber laser[J]. Chinese J Lasers, 2012, 39(6): 0602009.

[2] [2] S Yamashita, M Asano. Wide and fast wavelength-tunable mode-locked fiber laser based on dispersion tuning[J]. Opt Express, 2006,14(20): 9299-9306.

[3] [3] X Y He, Z B Liu, D N Wang. Wavelength-tunable, passively mode-locked fiber laser based on graphene and chirped fiber Bragg grating[J]. Opt Lett, 2012, 37(12): 2394-2396.

[4] [4] K Tamura, Y Kimura, M Nakazawa. Femtosecond pulse generation over 82 nm wavelength span from passively mode locked erbium-doped fibre laser[J]. Electronics Letters, 1995, 31(13): 1062-1063.

[5] [5] O G Okhotnikov, L Gomes, N Xiang, et al.. Mode-locked ytterbium fiber laser tunable in the 980~1070 nm spectral range[J]. Opt Lett, 2003, 28(17): 1522-1524.

[6] [6] Zhang Xin, Hu Minglie, Song Youjian, et al.. Dissipative-soliton mode locked laser based on large-mode-area photonic crystal fiber[J]. Acta Physica Sinica, 2010, 59(3): 1863-1869.

[7] [7] Zhao Hui, Chai Lu, Ouyang Chunmei, et al.. A long-cavity all-normal-dispersion mode-locked Yb-doped fiber laser[J]. Chinese J Lasers, 2010, 37(12): 2958-2963.

[8] [8] Tan Fangzhou, Liu Jiang, Sun Ruoyu, et al.. All-normal-dispersion passively mode-locked Yb-doped fiber laser with multimode interference effect[J]. Chinese J Lasers, 2013, 40(4): 0402010.

[9] [9] L Zhang, J M Hu, J H Wang, et at.. Tunable all-fiber dissipative-soliton laser with a multimode interference filter[J]. Opt Lett, 2012, 37(18): 3828-3830.

[10] [10] H Zhang, D Y Tang, R J Knize, et al.. Graphene mode-locked, wavelength-tunable, dissipative soliton fiber laser[J]. Appl Phys Lett, 2010, 96: 111112.

[11] [11] L J Kong, X S Xiao, C X Yang. Tunable all-normal-dispersion Yb-doped mode-locked fiber lasers[J]. Laser Phys, 2010, 20(4): 834-837.

[12] [12] Pan Yuzhai, Liu Xiaoli, Su Xiaohui, et al.. Tunable large-mode-area fiber lasers based on multimode interference effect[J]. Chinese J Lasers, 2013, 40(4): 0402003.

[13] [13] Liu Jiang, Wang Pu. High-power narrow-bandwidth continuous wave thulium-doped all-fiber laser[J]. Chinese J Lasers, 2013, 40(1): 0102001.

[14] [14] K Kieu, W H Renninger, A Chong, et al.. Sub-100 fs pulses at watt-level powers from a dissipative-soliton fiber laser[J]. Opt Lett, 2009, 34(5): 593-595.

[15] [15] J An, D Kim, J W Dawson, et al.. Grating-less, fiber-based oscillator that generates 25 nJ pulses at 80 MHz, compressible to 150 fs[J]. Opt Lett, 2007, 32(14): 2010-2012.