Optical fiber and optical cable

摘要

The present invention relates to an optical fiber and an optical cable which can be used for a long term even under environments in which an oil content migrates into them, and the optical fiber has a glass fiber extending along a predetermined axis, and a coating. The coating is composed of a plurality of layers each of which is comprised of an ultraviolet curable resin or a thermosetting resin, and swelling rates of the respective coating layers are set so that they increase from an outer peripheral surface of the glass fiber to an outer peripheral surface of the cable jacket.

主权项

1. An optical fiber comprising: a glass fiber; and a coating surrounding the glass fiber, wherein the coating is laid on the glass fiber along a radial direction from a central axis of the optical fiber and is composed of a plurality of layers each of which is comprised of an ultraviolet curable resin or a thermosetting resin, and
wherein, of two coating layers selected from the plurality of coating layers, a crosslink density of an inside coating layer closer to the glass fiber is larger than a crosslink density of an outside coating layer farther from the glass fiber than the inside coating layer.