[1] [1] Zhang Qiang, Yao Jianquan, Wen Wuqi, et al.. High power laser diode pumped Nd:YAG continuous wave dual-wavelength laser[J]. Chinese J Lasers, 2006, 33(5): 577-581.

[2] [2] Liu Yun, Xing Junhong, Jiao Mingxing, et al.. Design and experimental study of two-wavelength erbium-doped fiber laser using a pair of fiber Bragg gratings[J]. Journal of Xi′an University of Technology, 2012, 28(3): 303-307.

[3] [3] Xu Pan, Hu Zhengliang, Ma Lina, et al.. Output power stability of dual-wavelength erbium-doped fiber ring laser[J]. Chinese J Lasers, 2009, 36(6): 1347-1351.

[4] [4] Chai Hongliang. All Solid State Dual-Wavelength and Multi-Wavelength Laser[D]. Shandong: Shandong Normal University, 2007. 8-9.

[5] [5] Zhang Xiaokang, Liao Changjun, Liu Songhao. The relationship of the radius to the loss in bending waveguide[J]. Acta Photonica Sinica, 2004, 33(2): 147-150.

[6] [6] Bai Yangbo, Xiang Wanghua, Zu Peng, et al.. Tunable two wavelengths linear-cavity Yb-doped fiber laser based on volume grating[J]. Chinese J Lasers, 2011, 38(11): 1102004.

[7] [7] Li Zhen, Zhou Jun, He Bing, et al.. Controllable dual-wavelength fiber laser[J]. Chin Phy Lett, 2012, 29(7): 074203.

[8] [8] Chi Liu, Qi Yunfeng, Ding Yaqian, et al.. All-fiber, high power single-frequency, linearly polarized ytterbium-doped fiber amplifier[J]. Chin Opt Lett, 2011, 9(3): 031402.