A multi-wavelength Brillouin fiber laser of switchable frequency spacing based on a bi-directional ring cavity

被引：5
作者：
Geng, Xiang [1 ]
Jiang, Yanfei [1 ]
Gu, Han [1 ]
Luo, Saiyu [1 ]
Li, Li [1 ]
Sun, Ming [1 ]
机构：
[1] Nanjing Univ Sci & Technol, Sch Elect & Opt Engn, Nanjing 210018, Peoples R China
来源：
OPTICS COMMUNICATIONS | 2023年 / 531卷
关键词：
Multi-wavelength fiber laser; Switchable frequency spacing; Bi-directional ring cavity; Stimulated Brillouin scattering; RAMAN; GENERATION;
D O I：
10.1016/j.optcom.2022.129201
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A multi-wavelength Brillouin fiber laser (MW-BFL) of switchable frequency spacing is proposed and experimen-tally demonstrated. This MW-BFL comprises a ring cavity that includes a piece of 20-km-long single-mode fiber as the gain medium for Brillouin amplification. The switchability of wavelength spacing is implemented by adjusting the Brillouin pump (BP) coupling ratio into the ring cavity of a bi-directional pumping scheme, as the outputs of single and double Brillouin shifts are achieved with either a 50/50 coupler or a 99/1 coupler, respectively. A total of 11 lasing Stokes lines with single Brillouin shifts and 9 lasing Stokes lines with double Brillouin shifts have been observed when the BP power is set at 0 dBm. Both Brillouin lasers are wavelength-tunable, and the tuning ranges are 16 and 10 nm for the single-and double-spaced outputs, respectively.
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页数：8
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