Method of detecting an optical transmission line

Details Method of detecting an optical transmission line Method of detecting an optical transmission line

G - Physics

01

V

G01V 9/00 (2006.01) G01H 9/00 (2006.01) G01N 29/00 (2006.01) G01V 1/00 (2006.01)

Patent

CA 2093128

ABSTRACT OF THE DISCLOSURE A method of detecting an underground optical transmission line effectively and efficiently regardless if the optical transmission line is of a non-metallic type or not. The method comprises steps of emitting acoustic vibration from vibration generating means toward an underground area where the optical transmission line 1 is laid while moving the vibration generating means on a road roller 5 on the ground and measuring changes in the intensity of an optical signal being transmitted through the optical transmission line 1 subjected to the vibration and the displacement of the vibration generating means to determine the location of the underground optical transmission line 1 from the distribution of the intensity of the transmit-ted optical signal.

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