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APPARATUS AND METHOD FOR A WAVEGUIDE WITH AN INDEX PROFILE MANIFESTING A CENTRAL DIP FOR BETTER ENERGY EXTRACTION

  • US 20070206912A1
  • Filed: 11/03/2006
  • Published: 09/06/2007
  • Est. Priority Date: 11/03/2005
  • Status: Active Grant
First Claim
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1. An apparatus comprising:

  • an optical device configured to operate in a band of wavelengths corresponding to a gain band of one or more active rare-earth species, wherein the device includes a multimode signal waveguide having a central dip in the refractive index profile, the central-dip signal waveguide having a characteristic diameter.

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