| 摘要 |
An optical fiber connecting sleeve (10) is constructed of a cylindrical portion (11) provided with a clearance (12). This clearance (12) extends in a longitudinal direction of the sleeve (10). The closer a circumferential distance away from the clearance (12) toward a circumferentially intermediate portion (15) of the cylindrical portion (11) approaches a half a circumferential length of the cylindrical portion (11), the more the wall thickness of the cylindrical portion (11) increases. Optical fiber connectors (50) are inserted into the opposite end portions of the cylindrical portion (11) and brought into abutting contact with each other in an axially intermediate portion of the cylindrical portion (11) in a manner such that misalignment in axis of the optical fibers (52) of the connectors (50) is minimized. As a result, the light coupling loss in the abutting contact of the optical fibers (52) is reduced in comparison with the prior art. This realizes a high-quality telecommunication environment.
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