Ultrafine optical-frequency tunable Brillouin fiber laser based on fiber strain.

@article{Wu2011UltrafineOT,
  title={Ultrafine optical-frequency tunable Brillouin fiber laser based on fiber strain.},
  author={Zhijing Wu and Li Zhan and Qishun Shen and Jinmei Liu and Xiao Hu and Pingping Xiao},
  journal={Optics letters},
  year={2011},
  volume={36 19},
  pages={
          3837-9
        }
}
We present an ultrafine tunable single-frequency Brillouin fiber laser in which the fiber Brillouin gain also acts as a high-precision tunable filter. Controlling the strain on the fiber, the Stokes frequency shift may be precisely changed, and thus the lasing frequency can be tuned. Assisted by the frequency pulling effect, this method provides continuous ultrafine tuning ability for ~30% of the free spectral range without mode hopping, and can cover 271 MHz. The experiments showed that the… 
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