| 摘要 |
A reinforcing member of optical fiber fusion-splicing portion and a reinforcing method thereof are provided, in which plural coated optical fibers can be collectively reinforced in the high density, and a heating mechanism for collective reinforcement can be configured at a low cost. A reinforcing member 12 which reinforces collectively fusion-splicing portions 12a of plural coated optical fibers 11 includes a heat-shrinkable tube 13, a rod-shaped tensile strength member 14 arranged so that a part of its surface comes into contact with an inner surface of the heat-shrinkable tube, and plural tube-shaped heat-fusible adhesive members 15 arranged in the heat-shrinkable tube and into which the fusion-splicing portions of the single-core coated optical fibers are individually inserted. All of the plural tube-shaped heat-fusible adhesive members 15 are arranged in one of space portions formed between the tensile strength body 14 and the heat-shrinkable tube.
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