[1] Zhang Xin, Chen Wei, Liu Yu et al.. Single longitudinal mode fiber laser with multiple ring cavities and its frequency stabilization[J]. Chinese J. Lasers, 2007, 34(1): 50～54

[2] Zhang Yan, Chen Wei, Ren Min et al.. Stable, tunable single-longitudinal-mode erbium-doped fiber laser with multiple ring cavities[J]. Acta Optica Sinica, 2008, 28(3): 507～511

[3] Y. Takushima, S. Yamashita, K. Kikuchi et al.. Polarization-stable and single-frequency fiber lasers [J]. J. Lightwave Technol., 1998, 16(4): 661～669

[4] J. Liu, J. P. Yao, J. Yao et al.. Single-longitudinal-mode multiwavelength fiber ring laser [J]. IEEE Photon. Technol. Lett., 2004, 16(4): 1020～1022

[5] Jing Yang, Ronghui Qu, Guoyong Sun et al.. Suppression of mode competition in fiber lasers by using a saturable absorber and a fiber ring[J]. Chin. Opt. Lett., 2006, 4(7): 410～412

[6] Yu Li, Song Yuejiang, Zhang Xuping. Single-longitudinal-mode and wavelength-switchable fiber laser with linear cavity[J]. Chinese J. Lasers, 2008, 35(10): 1455～1458

[7] Q. H. Mao, J. W. Y. Lit. Switchable multiwavelength erbium-doped fiber laser with cascaded fiber grating cavities [J]. IEEE Photon. Technol. Lett., 2002, 14(5): 612～614

[8] Y. Z. Xu, H. Y. Tam, W. C. Du et al.. Tunable dual-wavelength-switching fiber grating laser [J]. IEEE Photon. Technol. Lett., 1998, 10(3): 334～336

[9] Yang Shiquan, Zhao Chunliu, Yuan Shuzhong et al.. Wavelength tunable linear cavity erbium-doped fiber laser operating in L-band[J]. Acta Optica Sinica, 2002, 22(6): 706～708

[10] Zhang Shumin, Dong Fajie, Lü Fuyun et al.. Wavelength tunable ring Er3+/Yb3+ co-doped fiber laser operating in L-band[J]. Chinese J. Lasers, 2005, 32(4): 449～452

[11] S. Hu, L. Zhan, Y. J. Song et al.. Switchable multiwavelength erbium-doped fiber ring laser with a multisection high-birefringence fiber loop mirror [J]. IEEE Photon. Technol. Lett., 2005, 17(7): 1387～1389

[12] D. H. Zhao, S. P. Li, K. T. Chan. Precise and rapid wavelength-switching of fibre laser using semiconductor optical amplifier [J]. Electron. Lett., 2001, 37(15): 945～946

[13] Y. G. Han, G. Kim, J. H. Lee et al.. Lasing wavelength and spacing switchable multiwavelength fiber laser from 1510 to 1620 nm [J]. IEEE Photon. Technol. Lett., 2005, 17(5): 989～991

[14] D. Derickson, Fiber Optic Test and Measurement[M]. Prentice Hall, 1998. 185～189