Abstract

We propose and demonstrate a novel concept of Brillouin fiber swept laser with narrow linewidth based on mode following effect. Utilizing the synergy of the Brillouin gain spectrum and cavity mode, the real-time mode following effect is achieved. In the experiment, a tunable laser source was employed to realize synchronous tuning of Brillouin gain spectrum for matching the shift of cavity mode induced by an intra-cavity piezoelectric transducer wound with gain fiber. We theoretically analyzed the influence of the driving parameters and wound fiber length on the frequency sweep range. Experimental results show that the obtained maximum continuous frequency sweep range is ∼445.76 MHz while the driving frequency is 12 kHz and the wound fiber length is 12 m, which is consistent with the theoretical analysis. This new type of fiber swept laser has huge potential application value in optical sensing and communication system.

Narrow linewidth parity-time symmetric Brillouin fiber laser based on a dual-polarization cavity with a single micro-ring resonator

Yi Liu, Linyi Wang, Xin Xu, Kai Jiang, Yajun You, Wenjun He, Xuefeng Han, Jiaxin Hou, and Xiujian Chou
Opt. Express 30(25) 44545-44555 (2022)

Tunable single frequency Hz-magnitude narrow linewidth Brillouin fiber laser based on parity-time symmetry

Yanzhi Lv, Bin Yin, Xiangcheng Chen, Guofeng Sang, Shilin Liu, Guangbo Li, Shiying Xiao, Muguang Wang, and Songhua Wu
Opt. Express 32(4) 4974-4986 (2024)

40 GHz narrow linewidth frequency-switched microwave signal generation based on a single-longitudinal-mode double-Brillouin-frequency spaced Brillouin fiber laser

Qingsong Jia, Peng Zhang, Tianshu Wang, Xiaoyan Li, and Baoxue Bo
Appl. Opt. 56(19) 5323-5328 (2017)

Mechanism and characteristics of a fast-tuning Brillouin/erbium fiber laser

Mo Chen, Zhou Meng, Qiao Sun, Shilin Sun, and Xiaobo Tu
Opt. Express 22(12) 15039-15048 (2014)

Single-mode narrow-linewidth fiber ring laser with SBS-assisted parity-time symmetry for mode selection

Zhenpeng Deng, Lingzhi Li, Jiejun Zhang, and Jianping Yao
Opt. Express 30(12) 20809-20819 (2022)