Optical fiber and a method for fabricating a low polarization-mode dispersion and low attenuation optical fiber
AssigneeCorning Incorporated
InventorsMartin Allen, Dana Bookbinder, Dipakbin Chowdhury, Daniel Hawtof, Dale Powers
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Abstract
A method of fabricating an optical waveguide fiber that includes the steps of providing a cylindrical glass optical fiber preform having a longitudinally extending centerline hole, and closing the hole under conditions suitable to result in uniform and symmetric hole closure. The method may include first plugging a first end and a second end of the centerline hole to prevent gas flow therethrough. The method preferably involves closing the centerline hole of the preform by drawing the preform down into an optical waveguide fiber.
Claims12
1-102. (canceled)
A single mode optical fiber, comprising:
- a fiber core comprised of layers of glass, said fiber core having a centerline;
- and
- a fiber cladding surrounding said fiber core, wherein the layers of glass surrounding the centerline are sufficiently circularly symmetric to result in a polarization mode dispersion of less than 0.2 psec/sqrt-km, and said fiber has less than about 3 spin rotations over a longitudinal fiber length of 1 meter.
Dependencies are inferred from the claim text.