Low bend loss single mode optical fiber

Low bend loss single mode optical fiber

  • CN 101,523,259 B
  • Filed: 08/28/2007
  • Issued: 01/23/2013
  • Est. Priority Date: 08/31/2006
  • Status: Active Grant
First Claim
Patent Images

1. optical fiber comprises:

  • Extend to radius R from center line 1Glass core;

    Round core and contacted glass-clad with it, this covering comprises;

    From R 1Extend to radius R 2The interior zone of annular, this interior zone comprises radial width W 2=R 2-R 1, From R 2Extend to radius R 3The ring zone of annular, this ring zone comprises radial width W 3=R 3-R 2, and From R 3Extend to outermost glass radius R 4The perimeter of annular;

    Its SMIS comprises the maximum relative refractive index Δ

    with respect to the perimeter 1MAX, and Δ

    1MAX

    0.45%;

    Wherein the interior zone of annular comprises radial width W 2, with respect to the minimum relative refractive index Δ

    of perimeter 2MIN, and with respect to the maximum relative refractive index Δ

    of perimeter 2MAX, Δ

    wherein 2MIN

    -0.05%, Δ

    2MAX

    0.05%, and W 2

    2 μ

    m;

    Wherein the ring zone of annular comprises;

    Minimum relative refractive index Δ

    with respect to the perimeter of annular 3MIN, Δ

    wherein 3MIN

    -0.1%;

    Δ

    wherein 1MAX

    Δ

    2MAX

    Δ

    3MIN, and Δ

    1MAX

    Δ

    2MIN

    Δ

    3MINR wherein 1/ R 2

    0.40;

    And Its SMIS and covering provide cable cutoff wavelength less than 1260nm, between 1300 and 1324nm between zero dispersion, at the 1310nm place between 8.20 and 9.50 μ

    m mode field diameter and less than the 10mm diameter plug bending loss of 1.0dB/ circle.

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