[1] Hua Wang, Minyu Wang, Hongming Zhang et al.. Multi-wavelength fiber ring laser with semiconductor optical amplifier[J]. Chinese J. Lasers, 2007, 34(11): 1502～1506

[2] Li Shule, Shao Jiafeng, Shen Qishun et al.. Multiwavelength fiber ring laser with selectable grid spacing [J]. Acta Optica Sinica, 2007, 27(10): 1802-1806

[3] Shan Qin, Yongbo Tang, Daru Chen. Multi-wavelength hybrid gain fiber ring laser based on Raman and erbium-doped fiber [J]. Chin. Opt. Lett., 2006, 4(11): 652～654

[4] Xinhuan Feng, Hwa-yaw Tam, Heliang Liu. Multiwavelength erbium-doped fiber laser employing a nonlinear optical loop mirror[J]. Opt. Commun., 2006, 268(2): 278～281

[5] Xinhuan Feng, Yange Liu, Shuzhong Yuan et al.. L-Band switchable dual-wavelength erbium-doped fiber laser based on a multimode fiber Bragg grating[J]. Opt. Express, 2004, 12(16): 3834～3839

[6] Xinhuan Feng, Yange Liu, Shenggui Fu et al.. Switchable dual-wavelength Ytterbium-doped fiber laser based on a few-mode fiber grating[J]. IEEE Photon. Technol. Lett., 2004, 16(3): 762～764

[7] Xueming Liu, Xiaoqun Zhou, Xiufeng Tang et al.. Switchable and tunable multiwavelength erbium-doped fiber laser with fiber Bragg gratings and photonic crystal fiber[J]. IEEE Photon.Technol. Lett., 2005, 17(8): 1626～1628

[8] D. R. Chen, Z. W. Yu, S. Qin et al.. Switchable dual-wavelength Raman erbium-doped fibre laser[J]. Electron. Lett., 2006, 42(4): 202～203

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

[10] Zhao Chun-liu, Yang Xiufeng, Lu Chao et al.. Switchable multi-wavelength erbium-doped fiber lasers by using cascaded fiber Bragg gratings written in high birefringence fiber[J]. Opt. Commun., 2004, 230(4～6): 313～317

[11] Yong Wook Lee, Byoungho Lee. Wavelength-switchable erbium-doped fiber ring laser using spectral polarization-dependent loss element[J]. IEEE Photon. Technol. Lett., 2003, 15(6): 795～797

[12] Jianliang Yang, Swee Chuan Tjin, Nam Quoc Ngo et al.. Wavelength-switchable fiber ring laser using cascaded fiber Bragg gratings combined with amplitude modulator[J]. Opt. Fiber Technol., 2005, 11(4): 361～369

[13] Qinghe Mao, John W. Y. Lit. L-band fiber laser with wide tuning range based on dual-wavelength optical bistability in linear overlapping grating cavities[J]. IEEE J. Quant. Electron., 2003, 39(10): 1252～1259

[14] Chang-Seok Kim, Young-Geun Han, Sang Bae Lee et al.. Individual switching of multi-wavelength lasing outputs based on switchable FBG filters[J]. Opt. Express, 2007, 15(7): 3702～3707

[15] L. A. Everall, K. Sugden, J. A. R. Williams et al.. Fabrication of multipassband moir′e resonators in fibers by the dual-phase-mask exposure method[J]. Opt. Lett., 1997, 22(19 ): 1473～1475