DISTRIBUTED-TYPE OPTICAL FIBER STRAIN SENSOR

摘要

PROBLEM TO BE SOLVED: To provide a distributed-type optical fiber strain sensor capable of detecting a strain variation with a low-cost device arrangement.;SOLUTION: The distributed type optical fiber strain sensor comprises an optical fiber to be measured having a plurality of peaks in Brillouin spectra; a light source emitting a light to be measured into the optical fiber to be measured; and a strain distribution detecting means measuring Brillouin scattered light, generated in the optical fiber to be measured and measuring the strain distribution of the optical fiber to be measured from the change in the difference between a frequency each of the peaks in Brillouin spectra.;COPYRIGHT: (C)2009,JPO&INPIT