| 摘要 |
Disclosed is a singe mode optical waveguide fiber having alternating segments of positive and negative dispersion and dispersion slope. The relative indexes, the refractive index profiles and the radii of the segments are chosen to provide low total dispersion and dispersion slope. Preferred waveguides in accordance with the invention exhibit a dispersion over the range of 1520 to 1625 nm which at all time has a magnitude which is less than 2, and more preferably less that 1 ps/nm-km. The total dispersion of the waveguide fiber is in the range of about -2.0 to +2.0 ps/nm-km at 1550 nm. The waveguide also features a low polarization mode dispersion.
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