IEEE Photonics Journal (Jan 2020)

Tunable Multi-Wavelength Bright-Dark and Dark-Bright Pulse Pairs Fiber Lasers

  • Yaxing Xin,
  • Hongbin Shen,
  • Shumin Zhang,
  • Xingliang Li,
  • Jingmin Liu,
  • Dan Yan

DOI
https://doi.org/10.1109/JPHOT.2020.3031081
Journal volume & issue
Vol. 12, no. 6
pp. 1 – 9

Abstract

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We have experimentally demonstrated tunable multi-wavelength bright-dark and dark-bright pulse pairs in an all normal dispersion Yb-doped fiber laser (YDFL) with a long cavity configuration. By carefully adjusting the pump power and the polarization state, bright-dark pulse pairs could be converted into dark-bright pulse pairs at the same wavelength. The comb filter provided by the tapered fiber facilitated the formation of the multi-wavelength pulses. And the wavelength-tunable for both bright-dark pulse pairs and dark-bright pulse pairs could be achieved by using a tapered fiber and rotatable polarization controller in the cavity to control the cavity losses. The tunable ranges were 14 nm and 4 nm with wavelength spacings of ~3.5 nm and ~3.7 nm for dual-wavelength pulse pairs and triple-wavelength pulse pairs, respectively.

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