Patent ID: 9096464
Filing Date: 2015-08-04
Classification: C03B,C03C

Abstract:
1. An optical fiber manufacturing method comprising: forming a bare optical fiber by drawing an optical fiber preform; forming an intermediate optical fiber by providing a coating layer on an outer periphery of the bare optical fiber, the coating layer being formed of resin, the coating layer including a first layer disposed in contact with the bare optical fiber and a second layer disposed so as to overlap the first layer, the second layer having a higher Young's modulus of resin than the first layer; performing primary curing of the coating layer which forms the intermediate optical fiber; pressing an outer periphery of the intermediate optical fiber; performing secondary curing of the pressed coating layer of the intermediate optical fiber by emitting ultraviolet rays to the pressed coating layer, thereby forming an optical fiber; and winding the optical fiber after completing the secondary curing.