Current Optics and Photonics

Optical Society of Korea (한국광학회)
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Simulation of Terahertz Signal Generation by Dispersion-dependent Kelly Sidebands of Mode-locking Fiber Lasers

  • Weiqian Zhao (School of Science, Jiangsu University of Science and Technology) ;
  • Mingya Shen (Institute of Applied Photonic Technology, Yangzhou University) ;
  • Youyou Hu (School of Science, Jiangsu University of Science and Technology) ;
  • Ziye Wang (School of Science, Jiangsu University of Science and Technology)
  • Received : 2023.03.15
  • Accepted : 2023.06.06
  • Published : 2023.08.25
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Abstract

The ±1-order Kelly sidebands with dispersion-dependent spacing of mode-locking fiber lasers are investigated for frequency-tunable terahertz signal generation. The principle of dispersion dependence of Kelly sidebands is analyzed. A new method, which is a dispersion-management mechanism introduced into the fiber-laser cavity, is proposed to generate Kelly sidebands with widely tunable wavelength spacing. A spacing tuning range of up to 28.46 nm of the ±1-order Kelly sidebands is obtained in simulation. Using the data of the optical spectrum with dispersion-dependent Kelly sidebands, the frequency spectrum of generated terahertz signals is calculated. Consequently, the signal frequency can be changed from 0.09 to 2.27 THz.

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References

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