G - Physics – 01 – M
Patent
G - Physics
01
M
G01M 11/00 (2006.01) G01H 9/00 (2006.01) H04B 10/08 (2006.01)
Patent
CA 2270095
A signal/vibration detecting technique employs a simple structure to identify a target optical fiber among many and carry out a bidirectional conversation through the target optical fiber. First ends of optical fibers (202A, 202B), one of which is a target optical fiber, are connected to an optical transceiver (201). Second ends of the optical fibers are connected to each other to form a loop. A local unit (203) is installed at the loop. The local unit vibrates the loop, and the optical transceiver emits lights so that the lights are oppositely propagated through the loop. The propagated lights are coupled together so that they interfere with each other. In the intensity of the interfering lights, a change corresponding to the vibration is detected to identify the target optical fiber. Once the target optical fiber is identified, it is used to carry out a conversation between the optical transceiver and the local unit.
Nakamura Yasushi
Niimi Shinichi
Unami Yoshiharu
Gowling Lafleur Henderson Llp
Ltd. Fujikura
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