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Segmented acoustic core photonic crystal fiber laser

  • US 7,822,314 B1
  • Filed: 07/02/2008
  • Issued: 10/26/2010
  • Est. Priority Date: 07/02/2008
  • Status: Expired due to Fees
First Claim
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1. In a standard photonic crystal fiber comprised in cross-section of N uniformly doped, hexagon-shaped silica core segments enclosed by a cladding comprised of stress applying parts and air holes, the improvement comprising adding a plurality of non-rare earth dopants known to either raise or lower the acoustic index of refraction or the optical index of refraction or both to said N core segments selected in type and concentration such that the acoustic index of refraction of each core segment is changed to support N distinctly different peak Brillouin frequencies having no linewidth overlap while maintaining the same optical index of refraction for all N core segments, thereby enabling kilowatt-level narrow-linewidth fiber lasers and amplifiers.

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