| 摘要 |
PROBLEM TO BE SOLVED: To provide a low-cost and easy-to-use structure for an optical loop back connector. SOLUTION: The optical loop back connector is such that it is provided with a ferrule 1 having plural light input/output parts and an engaging means for making this ferrule 1 oppositely engaged with the light input/output part of an optical transceiver and that an optical signal outputted from the light output part of the optical transceiver is looped back to be inputted to the optical input part of the transceiver. In such optical loop back connector, a concave light reflection face 4 is formed in the input/output part 3 of the ferrule 1, thereby reflecting the optical signal outputted from the optical output part of the transceiver by the concave light reflection face 4, and inputting the signal to the optical input part of the optical transceiver.
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