TY - JOUR
T1 - Frequency-scanning BOTDA with ultimately fast acquisition speed
AU - Sovran, Ido
AU - Motil, Avi
AU - Tur, Moshe
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2015/7/1
Y1 - 2015/7/1
N2 - A polarization-independent fast and distributed frequency-scanning Brillouin optical time-domain analysis (BOTDA) technique is presented, capable of acquiring the full Brillouin gain spectrum at a speed limited only by the fiber length and the employed frequency scanning granularity. For a 145-m long fiber and 71 interrogating frequencies, the ultimate measurement speed of 9700 [full-fiber-Brillouin-gain-spectra]/second is demonstrated, covering a strain dynamic range of 4200 με with an accuracy of ±10 με. Dynamic measurements with a spatial resolution of 10 cm are also demonstrated by combining the technique with the double pulse pair BOTDA method.
AB - A polarization-independent fast and distributed frequency-scanning Brillouin optical time-domain analysis (BOTDA) technique is presented, capable of acquiring the full Brillouin gain spectrum at a speed limited only by the fiber length and the employed frequency scanning granularity. For a 145-m long fiber and 71 interrogating frequencies, the ultimate measurement speed of 9700 [full-fiber-Brillouin-gain-spectra]/second is demonstrated, covering a strain dynamic range of 4200 με with an accuracy of ±10 με. Dynamic measurements with a spatial resolution of 10 cm are also demonstrated by combining the technique with the double pulse pair BOTDA method.
KW - Brillouin scattering
KW - Optical fiber sensors
KW - nonlinear optics
UR - http://www.scopus.com/inward/record.url?scp=84933515124&partnerID=8YFLogxK
U2 - 10.1109/LPT.2015.2424271
DO - 10.1109/LPT.2015.2424271
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AN - SCOPUS:84933515124
SN - 1041-1135
VL - 27
SP - 1426
EP - 1429
JO - IEEE Photonics Technology Letters
JF - IEEE Photonics Technology Letters
IS - 13
M1 - 7088586
ER -