| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a system in which an optical bus is composed of a plurality of detector units of the same type. <P>SOLUTION: A detector unit 11 is provided with an optical transmitter 23, an optical receiver 25 and at least one optical connection path 15, and two optical interfaces 17 and 17' are optically connected with the optical connection path 15. Further, at least one optical change part 21 is provided along the optical connection path, and the optical change part couples light from the optical transmitter 23 to the optical connection path 15, extracts light from the optical connection path 15 and couples the light to the optical receiver 25. <P>COPYRIGHT: (C)2004,JPO |
