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US 6,550,281 B1Granted
Method for providing controlled spin in optical fiber
AssigneeCorning Incorporated
InventorRobert M. Hawk
Life of this patent
Estimating the term…
Abstract
A fiber (106) having low polarization mode dispersion is made by heating the end of a preform (100) with a furnace (101). The fiber is drawn from the heated end. The fiber passes between two rollers (102, 104). As the fiber passes therebetween, the angular tilt of each of the rollers is changed so that a spin is imparted to the fiber.
Claims10
A method of making an optical fiber from a preform, comprising:
- heating at least a portion of the preform to a draw temperature;
- drawing optical fiber from the preform so that the optical fiber passes between and contacts a first and second roller, each roller rotating about an axis of rotation passing longitudinally through the center of each roller;
- and
- pivoting said rollers with respect to each other during the drawing step such that the axes of rotation cross to become non-parallel and to impart a spin to the fiber without displacing the fiber from a vertical path at a point of contact with the first and second rollers.
1 more element
A method of making optical fiber, comprising:
- heating a preform;
- drawing optical fiber from the preform so that the optical fiber passes between and contacts a first and second roller, each roller rotating about an axis of rotation passing longitudinally through the center of each roller;
- and
- pivoting the rollers with respect to each other during the drawing step such that the axes of rotation cross to become non-parallel imparting spin to the fiber wherein a position of the fiber along a longitudinal length of the first and second rollers remains unchanged as spin is imparted.
1 more element
A method of making optical fiber, comprising:
- heating a preform;
- drawing optical fiber from the preform;
- passing the optical fiber between a first and a second roller, each roller rotating about a longitudinal axis of rotation thereof;
- and
- pivoting said rollers with respect to each other such that the axes of rotation become non-parallel and impart fiber spin but without deflecting a lateral position of the fiber at a point of contact with the first and second rollers.
2 more elements
Dependencies are inferred from the claim text.