[1] Park N, Wysocki P F. 24-line multiwavelength operation of erbium-doped fiber-ring laser[J]. IEEE Photonics Technology Letters, 1996, 8(11):1459-1461.

[2] Yamashita S, Hotate K. Multiwavelength erbium-doped fibre laser using intracavity etalon and cooled by liquid nitrogen[J]. Electronics Letters, 1996, 32(14):1298-1299.

[3] Chow J, Town G, Eggleton B, et al. Multiwavelength generation in an erbium-doped fiber laser using in-fiber comb filters[J]. IEEE Photonics Technology Letters, 1996, 8(1):60-62.

[4] 刘艳格,冯新焕,董孝义.室温稳定多波长光纤激光器技术的研究新进展[J].中国激光, 2007, 34(7):883-894.(Liu Yange, Feng Xinhuan, Dong Xiaoyi. Progress in room-temperature stable multi-wavelength fiber laser technologies. Chinese Journal of Lasers, 2007, 34(7):883-894)

[5] Kim S K, Chu M J, Lee J H. Wideband multiwavelength erbium-doped fiber ring laser with frequency shifted feedback[J]. Optics Communications, 2000, 190(1/6):291-302.

[6] Okhotnikov O G. Multiwavelength picosecond frequency-shifted feedback laser with pulse control by a shaped-gain fiber amplifier[J]. Optics Letters, 1998, 23(18):1459-1461.

[7] Huang T, Li Xiaohui, Shum P P, et al. All-fiber multiwavelength thulium-doped laser assisted by four-wave mixing in highly germania-doped fiber[J]. Optics Express, 2015, 23(1):340-348.

[8] Wang Xiong, Zhu Yadong, Zhou Pu, et al. Tunable, multiwavelength Tm-doped fiber laser based on polarization rotation and four-wave-mixing effect[J]. Optics Express, 2013, 21(22):25977-25984.

[9] Zhang Min, Hu Qifan, Zheng Wanjun. A tunable and switchable wavelength spacing of multi-wavelength erbium doped fiber laser by exploiting nonlinear polarization rotation[C]//Proc of SPIE. 2015:965549.

[10] Feng Xinhuan, Tam H Y, Wai P K. Stable and uniform multiwavelength erbium-doped fiber laser using nonlinear polarization rotation[J]. Optics Express, 2006, 14(18):8205-8210.

[11] Zhang Zuxing, Zhan Li, Xu Kun, et al. Multiwavelength fiber laser with fine adjustment, based on nonlinear polarization rotation and birefringence fiber filter[J]. Optics Letters, 2008, 33(4):324-326.

[12] Ma Wanzhuo, Wang Tianshu, Zhang Peng, et al. Widely tunable multiwavelength thulium-doped fiber laser using a fiber interferometer and a tunable spatial mode-beating filter[J]. Applied Optics, 2015, 54(12):3786-3791.

[13] Liu Guanxiu, Feng Dejun. Single- and dual-wavelength switchable linear polarized Yb3+-doped double-clad fiber laser[J]. Applied Optics, 2015, 54(14):4309-4312.

[14] Sugavanam S, Zulkifli M Z, Churkin D V. Multi-wavelength erbium/Raman gain based random distributed feedback fiber laser[J]. Laser Physics, 2016, 26:015101.

[15] Du Xueyuan, Zhang Hanwei, Wang Xiong, et al. Multiwavelength Raman fiber laser based on polarization maintaining fiber loop mirror and random distributed feedback[J]. Laser Physics Letters, 2015, 12:045106.

[16] Eltaher A E, Harper P, Babin S A, et al. Effect of Rayleigh-scattering distributed feedback on multiwavelength Raman fiber laser generation[J]. Optics Letters, 2011, 36(2):130-132.

[17] Sugavanam S, Yan Z, Kamynin V, et al. Multiwavelength generation in a random distributed feedback fiber laser using an all fiber Lyot filter[J]. Optics Express, 2014, 22(3):2839-2844.

[18] Gu Xijia, Chen L R. Multi-wavelength generation in Yb-doped fiber laser through four-wave mixing[C]//Nonlinear Photonics. Optical Society of America, 2007:NThC4.

[19] Fu Shenggui, Si Libin, Guo Zhancheng, et al. Switchable multiwavelength ytterbium-doped double-clad fiber laser based on a multimode fiber grating[J]. Applied Optics, 2007, 46(17):3579-3582.

[20] Sun Tiegang, Guo Yubin, Wang Tianshu, et al. Widely tunable wavelength spacing dual-wavelength single longitudinal mode erbium doped fiber laser[J]. Optical Fiber Technology, 2014, 20(3):235-238.

[21] Huang Shisheng, Wang Yonggang, Yan Peiguang, et al. Tunable and switchable multi-wavelength dissipative soliton generation in a graphene oxide mode-locked Yb-doped fiber laser[J]. Optics Express, 2014, 22(10):11417-11426.

[22] Liu Xueming, Han Dongdong, Sun Zhipei, et al. Versatile multi-wavelength ultrafast fiber laser mode-locked by carbon nanotubes[J]. Scientific Reports, 2013, 3(9):2718-2718.

[23] Wang Shiwei, Zhou Yan, Wang Yao, et al. Digital-wavelength ytterbium fiber laser mode-locked with MoS2[J]. Laser Physics Letters, 2016, 13:055102.

[24] Jin Xiaoxi, Wang Xiong, Wang Xiaolin, et al. Tunable multiwavelength mode-locked Tm/Ho-doped fiber laser based on a nonlinear amplified loop mirror[J]. Applied Optics, 2015, 54(28):8260-8264.

[25] Lu Z G, Sun F G, Xiao G Z, et al. A high-power multi-wavelength ytterbium/erbium co-doped double-cladding fiber ring laser[C]//Frontiers in Optics. Optical Society of America, 2004:FWD2.

[26] Han Fang, Sun Xiangli, Wu Lijun, et al. Dual-wavelength orthogonally polarized radiation generated by a tungsten thermal source[J]. Optics Express, 2013, 21(23):28570-28582.

[27] Fu Shijie, Shi Guannan, Sheng Quan, et al. Dual-wavelength fiber laser operating above 2 μm based on cascaded single-mode-multimode-single-mode fiber structures[J]. Optics Express, 2016, 24(11):11282-11289.

[28] Feng Suchun, Xu Ou, Lu Shaohua, et al. Single-polarization, switchable dual-wavelength erbium-doped fiber laser with two polarization-maintaining fiber Bragg gratings[J]. Optics Express, 2008, 16(16):11830-11835.

[29] Doran N J, Wood D. Nonlinear-optical loop mirror[J]. Optics Letters, 1988, 13(1):56-58.