TY - GEN
T1 - Distributed and dynamic monitoring of 4km/sec waves using a Brillouin fiber-optic strain sensor
AU - Peled, Yair
AU - Yaron, Lior
AU - Motil, Avi
AU - Tur, Moshe
PY - 2013
Y1 - 2013
N2 - We report a Brillouin-based fully distributed and dynamic monitoring of a strain wave, propagating at a speed of ∼4km/sec in a 6m long fiber. Using an audio speaker, a mechanical impulse was introduced to one end of a 6m long optical fiber, initiating a strain wave propagating towards the other fixed end of the fiber. Employing a simplified version of the Slope-Assisted Brillouin Optical Time Domain Analysis (SA-BOTDA) technique, the whole length of the fiber was interrogated every 1μs (before averaging). A dynamic spatially and temporally continuous map of the strain was obtained, from which the wave velocity could be deduced. With a trade-off among sampling rate, range and signal to noise ratio, kHz sampling rates and hundreds of meters of range can be covered with spatial resolutions down to a few centimeters.
AB - We report a Brillouin-based fully distributed and dynamic monitoring of a strain wave, propagating at a speed of ∼4km/sec in a 6m long fiber. Using an audio speaker, a mechanical impulse was introduced to one end of a 6m long optical fiber, initiating a strain wave propagating towards the other fixed end of the fiber. Employing a simplified version of the Slope-Assisted Brillouin Optical Time Domain Analysis (SA-BOTDA) technique, the whole length of the fiber was interrogated every 1μs (before averaging). A dynamic spatially and temporally continuous map of the strain was obtained, from which the wave velocity could be deduced. With a trade-off among sampling rate, range and signal to noise ratio, kHz sampling rates and hundreds of meters of range can be covered with spatial resolutions down to a few centimeters.
KW - Brillouin scattering
KW - Detection
KW - Fiber optics sensors
KW - Nonlinear optics
UR - http://www.scopus.com/inward/record.url?scp=84884341262&partnerID=8YFLogxK
U2 - 10.1117/12.2025640
DO - 10.1117/12.2025640
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AN - SCOPUS:84884341262
SN - 9780819496348
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Fifth European Workshop on Optical Fibre Sensors
T2 - 5th European Workshop on Optical Fibre Sensors, EWOFS 2013
Y2 - 19 May 2013 through 22 May 2013
ER -