| 摘要 |
In order to provide a tap for use with large diameter plastics fibre optics, the tap comprises an interally-reflecting prism 9 or the like 9, preferably of synthetic sapphire, adapted to be pressed fitted so as to penetrate the material of the sheath 2 in a light-tight manner and enter the core 1, and means 8 for transmitting signals into and receiving signals from the core 1 via an inclined face 9a of the prism 9. The prism is shown mounted on a casing for a transducer 8, and the transducer 8 and prism 9 are mounted in a first housing part 3 which co-operates and snap fits with a second housing part 5 to surround the sheath 2 of the optic and maintain the prism 9 in position relative thereto. The invention further includes a plastics fibre optic data transmission highway having one or more taps as described above in operative position on the fibre optic. <IMAGE> |
