Method of making optical fiber with low polarization mode...

Details Method of making optical fiber with low polarization mode... Method of making optical fiber with low polarization mode...

C - Chemistry, Metallurgy

03

B

C03B 37/025 (2006.01) C03B 37/027 (2006.01) C03B 37/03 (2006.01)

Patent

CA 2172747

The disclosed method of making optical fiber (43) involves applying alternately clockwise and counterclockwise twist to the fiber as the fiber is being drawn from a preform (41), such that a permanent spin is impressed on the fiber.The torque is applied by novel means, namely, a roller (15) of geometry that causes the fiber to roll on the surface of the roller, alternately in one direction and the opposite direction. The novel technique can facilitate drawing of low PMD (polarization mode dispersion) fiber at relatively high speed.

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