[2] Nilsson J, Payne D N. High-power fiber lasers[J]. Science, 332, 921-922(2011).
[4] Jiang Jiamin, Chen Xuanjuan, Gao Yuxin, et al. Bidirectional ultrahigh-repetition-rate ultrafast fiber laser[J]. Optics & Laser Technology, 142, 107196(2021).
[5] Cui Wenxiang, Zhou Xuefang, Bi Meihua, et al. Switchable generation of multi-wavelength continuous wave and square-wave pluses in a bidirectional Erbium-doped fiber laser[J]. Optics & Laser Technology, 143, 107302(2021).
[6] Hu Guoqing, Dong Mingli, Chen Kai, et al. Tunable multidimensional multiplexed Q-switched pulse outputs from a linear fiber laser with a bidirectional loop[J]. Optics & Laser Technology, 141, 107138(2021).
[7] Wang Xiaolin, Ye Yun, Xi Xiaoming, et al. A bidirectional output linear cavity allfiber laser oscillat: CN201821644646.3[P]. 201810110