| 摘要 |
According to an optical fiber splicing technique in which optical fibers F11 and F12 respectively connected to optical members 3 and 4 of an optical member unit are connected by fusion splicing, the plurality of optical fibers F11 and F12 and a looped turn-around fiber F21 are positioned facing each other and connected by fusion splicing, to connect the plurality of optical fibers F11 and F12 with each other.
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