[1] Dang Wenjia, Li Zhe, Lu Na, et al. Research progress of 0.9~1.0 μm near-infrared continuous-wave fiber lasers [J]. Chinese Optics, 2021, 14: 264-274. (in Chinese) doi:  10.37188/CO.2020-0193
[2] Fang Zeyuan, Yin Lu, Yan Mingjian, et al. Study on signal light transmission efficiency enhancement of backward pump-signal combiners in high-power fiber lasers [J]. Infrared and Laser Engineering, 2020, 49(10): 20200014. (in Chinese)
[3] Wang Zheng, Yan Mingjian, Yin Lu, et al. Stripping of cladding light at different angles: theoretical and experimental studies [J]. Chinese Optics, 2019, 12(5): 1124-1130. (in Chinese) doi:  10.3788/co.20191205.1124
[4] Chen Zilun, Zhou Xuanfeng, Wang Zefeng, et al. Review of all-fiber signal combiner for high power fiber lasers(Invited) [J]. Infrared and Laser Engineering, 2018, 47(1): 0103005. (in Chinese)
[5] Muendel M H, Farrow R, Liao K H, et al. Fused fiber pump and signal combiners for a 4-kW ytterbium fiber laser[C]//Processings of SPIE, 2011, 7914: 791431.
[6] Eschrich T, Hoh D, Just F, et al. Incoherent beam combining of 5.1 kW using a 7×1 signal combiner into a 50 µm core output fiber [C]//Advanced Photonics, 2014: JTu6A. 1.
[7] Plötner M, de Vries O, Schreiber T, et al. High power incoherent beam combining by an all-glass 7:1 fiber coupler with high beam quality[C]//Advanced Solid State Lasers, Shanghai, 2014: ATh2A. 17.
[8] Lei Chengmin, Gu Yanran, Chen Zilun, et al. Incoherent beam combining of fiber lasers by an all-fiber 7×1 signal combiner at a power level of 14 kW [J]. Optics Express, 2018, 26(8): 10421. doi:  10.1364/OE.26.010421
[9] Yang Huan, Lei Chengmin, Wu Weijun, et al. 3×1 all-fiber signal combiner with high beam quality for high-power lasers [J]. Laser Physics, 2020, 30(2): 025102. doi:  10.1088/1555-6611/ab5d27
[10] Wu Weijun, Chen Zilun, Wang Zefeng, et al. Beam combining of fiber lasers by a 3 × 1 signal combiner at a power >13 kW [J]. Optical Fiber Technology, 2020, 54: 102109. doi:  10.1016/j.yofte.2019.102109
[11] Huang Shan, Liu Yu, Tao Rumao, et al. Lossless all-fiber 7×1 signal combiner for beyond 10 kW high power operation[C]//Jiang Huilin, Chu Junhao. Sixth Symposium on Novel Optoelectronic Detection Technology and Applications, 2020: 195.
[12] Zhou Hang, Chen Zilun, Zhou Xuanfeng, et al. All-fiber 7×1 signal combiner for high power fiber lasers [J]. Applied Optics, 2015, 54(11): 3090-3094. doi:  10.1364/AO.54.003090
[13] Han Lixiang, Hao Mingming. Direct combining output of fiber coupled laser diodes via fiber combiner with high efficiency and multiple input ports [J]. Optik, 2020, 218: 165268. doi:  10.1016/j.ijleo.2020.165268