Title :
Distributed fiber Brillouin strain sensing with 1-cm spatial resolution by correlation-based continuous-wave technique
Author :
Hotate, Kazuo ; Tanaka, Masato
Author_Institution :
Tokyo Univ., Japan
Abstract :
This letter describes improvement in the spatial resolution of distributed fiber Brillouin strain sensing by the correlation-based continuous-wave technique, which we proposed previously. The spatial resolution of 1 cm has been achieved for a partly stretched fiber. This result shows the technique is applicable to smart structures or materials as a nervous system to monitor strain distribution.
Keywords :
distributed sensors; fibre optic sensors; intelligent sensors; intelligent structures; optical correlation; stimulated Brillouin scattering; strain sensors; FM frequency dependence; correlation-based continuous-wave technique; distributed fiber Brillouin strain sensing; partly stretched fiber; position-selective generation; smart structures; spatial resolution; stimulated Brillouin scattering; Acoustic measurements; Acoustic pulses; Brillouin scattering; Capacitive sensors; Frequency; Optical fiber sensors; Optical fibers; Pulse measurements; Shape; Spatial resolution;
Journal_Title :
Photonics Technology Letters, IEEE
