Method for producing twisted optical fiber with reduced...

Details Method for producing twisted optical fiber with reduced... Method for producing twisted optical fiber with reduced...

2007-12-25

2007-12-25

Griffin, Steven P. (Department: 1731)

Glass manufacturing

Processes of manufacturing fibers, filaments, or preforms

Process of manufacturing optical fibers, waveguides, or...

C065S438000

Reexamination Certificate

active

10754904

ABSTRACT:
A method for drawing an optical fiber having reduced polarization mode dispersion (PMD) draws an optical fiber from an optical fiber preform whose core ovality is at max about 3%, coats the optical fiber with acrylic polymer and twists the coated optical fiber with a pair of spinning wheels. The twisting of the fiber is achieved by four discrete spin rates that repeat in a periodic fashion after the drawing of certain lengths of the optical fiber. At least one of the spin rates varies in a trapezoidal manner along the respective one of drawn lengths of the optical fiber.

REFERENCES:
patent: 4473273 (1984-09-01), Hodge
patent: 5897680 (1999-04-01), Geertman
patent: 2001/0020374 (2001-09-01), Roba et al.
patent: 2003/0010066 (2003-01-01), Sasaoka et al.
patent: 2004/0107734 (2004-06-01), Kenkare et al.

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