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Nonlinear optical fibre method of its production and use thereof

  • US 7,266,275 B2
  • Filed: 03/14/2003
  • Issued: 09/04/2007
  • Est. Priority Date: 03/15/2002
  • Status: Expired due to Fees
First Claim
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1. An optical fibre for transmitting light of at least one predetermined wavelength λ

  • , the optical fibre having a longitudinal direction and a cross-section perpendicular thereto, the optical fibre comprising;

    (a) a core region comprising a core material of refractive index nc; and

    (b) a cladding region, said cladding region surrounding said core region and comprising low-index cladding features of refractive index n1 arranged in a background cladding material of refractive index nb;

    said cladding region further comprising first inner cladding features of refractive index n1 and second inner cladding features of refractive index n2, where n2 is lower than nc, and n2 is higher than n1, andsaid first inner cladding features and said second inner cladding features are arranged proximal to said core region, andn2 is lower than nb.

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