Multiwavelength Raman fiber-ring laser based on tunable cascaded long-period fiber gratings

  title={Multiwavelength Raman fiber-ring laser based on tunable cascaded long-period fiber gratings},
  author={Young-Geun Han and Chang-Seok Kim and J. Kang and Un-Chul Paek and Young Rock Chung},
  journal={IEEE Photonics Technology Letters},
Multiwavelength Raman fiber lasers using intracavity tunable cascaded long-period fiber gratings (LPFGs) are discussed. The application of the cascaded LPFGs as a multichannel fiber filter for the multiple-wavelength generation is proposed and experimentally demonstrated. The characteristics of multiwavelength fiber-ring lasers can be controlled by changing the physical parameters of cascaded LPFGs such as the separation distance between the gratings, grating length, and number of gratings. The… CONTINUE READING
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