| 摘要 |
PROBLEM TO BE SOLVED: To use a reinforcing apparatus more simple in structure than before and to reduce the number of processes for accommodating an optical fiber. SOLUTION: This reinforcement structrure is so constructed that a first member 3a and a second member 3b of a first reinforcing apparatus (reinforcing apparatus) are integrated with each other, with bare optical fiber part of an optical fiber coupler sandwiched between them, lead fibers 1b, 1b... on both sides of the bare optical fiber are drawn out from opening parts 3c, 3c of the first reinforcing apparatus 3, a gap between the opening parts 3c, 3c is filled with sealing resin 4, 4, unhardened synthetic resin liquid is applied to the whole of the side of the first reinforcing apparatus, and hardened to form a synthetic resin coating layer (synthetic resin layer) 5A, and lastly elastic resins 6, 6 are provided in the peripheries of the lead fibers 1b, 1b... at both ends of the first reinforcing apparatus 3 to seal the opening parts 3c, 3c. |
