Method of imparting twist to optical fiber
AssigneeCorning Incorporated
InventorsXin Chen, Ming-Jun Li, Nicol A. Heron, Jeanne L. Swecker, Naiyue Zhou
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Abstract
A method for producing low-PMD fiber, in which a glass fiber is drawn from an optical fiber perform by a tractor which pulls such optical fiber from said perform; subsequent to said tractor pulling the fiber is twisted about its axis to increase the magnitude of twist which is imparted to said fiber. The fiber is then wound onto a fiber storage spool such that at least a portion of the twist imparted to said optical fiber is retained while said fiber is wound on said spool.
Claims20
A method for producing low-PMD fiber comprising:
- drawing a glass fiber from an optical fiber perform by a tractor which pulls such optical fiber from said perform;
- at a location subsequent to said tractor pulling said fiber and prior to said fiber being cut, twisting the optical fiber about its axis to increase the magnitude of twist which is imparted to said fiber;
- and
- winding the optical fiber onto a spool such that at least a portion of the twist imparted to said optical fiber is retained while said fiber is wound on said spool.
A method of applying mechanical twist to an optical fiber comprising:
- pulling a fiber from a central section of a first fiber storage spool having at least one flange end;
- applying a torque to the fiber via contact with a torque increasing device, said torque causing the fiber to undergo rotation around the longitudinal axis of the fiber such that the twist is impressed on the fiber, and thereafter storing said fiber on a second fiber storage spool such that at least a portion of the twist imparted to said optical fiber is retained while said fiber is wound on said second spool.
Dependencies are inferred from the claim text.