| 摘要 |
An optical coupler ( 1 ) comprises two optical fibers ( 2, 3 ). Each of the optical fibers connects a sender unit ( 4 ) to a first end ( 9, 10 ). Then each of these fibers is connected independently to two independent receivers ( 6, 8 ). At the sender unit ( 4 ), the fibers are bared to be inserted into the same sleeve ( 15 ) which may be presented before the optical beam sent out by the sender unit. The bared intermediate zone between the sleeve and the non-bared cable portion is protected by a first sheath inside which the bared optical fibers are floating, and by a second protective sheath.
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