Optical fiber and method for manufacturing optical fiber

Abstract

The present invention intends to suppress curing of a primary layer over time after manufacturing an optical fiber and to effectively suppress microbend loss. The optical fiber according to the present invention including a bare optical fiber, a primary layer formed of a first ultraviolet curing resin covering the bare optical fiber and a secondary layer formed of a second ultraviolet curing resin covering the primary layer. A Young's modulus of the primary layer is larger than or equal to 0.2 MPa and smaller than or equal to 2.1 MPa. The primary layer includes at least one of an alkoxysilane-derived chemical structure or a halosilane-derived chemical structure.

Dependencies are inferred from the claim text.