| 摘要 |
An optical fiber including an optical fiber wire is provided. The optical fiber wire has a bare optical fiber portion, to which first elastic torsion is applied, and a coating layer, which coats the bare optical fiber portion and which is formed of curable resin and generates elastic repulsion against resilience occurring in the bare optical fiber portion so that the first elastic torsion applied to the bare optical fiber portion is held. Second elastic torsion is applied to the entire optical fiber configured to include the bare optical fiber portion and the coating layer. |
