Method and apparatus for manufacturing optical fiber

摘要

A twist imparting roller 220 with two rotational axes C1, C2 is used as a roller for guiding a coated optical fiber 200. The twist imparting roller 220 rotates about the first rotational axis C1 to guide the coated optical fiber 200 and rotates along a circular locus indicated by a dashed line L2, about the second rotational axis C2 to impart twists to the optical fiber. The coated optical fiber 200 is wound through a turn along a V-groove 221 around the twist imparting roller 220. This suppresses rolling of the coated optical fiber 200 relative to the roller surface of the twist imparting roller 220, so as to efficiently impart the twists to the optical fiber and adequately reduce polarization mode dispersion in the optical fiber.