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50-km distributed strain sensing enabled by a self-swept BOTDR. / Poddubrovskii, Nikita R.; Kovalenko, Dmitry A.; Lobach, Ivan A. и др.
в: Optics Communications, Том 620, 11.07.2026.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - 50-km distributed strain sensing enabled by a self-swept BOTDR
AU - Poddubrovskii, Nikita R.
AU - Kovalenko, Dmitry A.
AU - Lobach, Ivan A.
AU - Kablukov, Sergey I.
N1 - Nikita R. Poddubrovskii, Dmitry A. Kovalenko, Ivan A. Lobach, Sergey I. Kablukov, 50-km distributed strain sensing enabled by a self-swept BOTDR, Optics Communications, Volume 620, 2026, 133561, ISSN 0030-4018, 10.1016/j.optcom.2026.133561. Russian Science Foundation N◦ 25-12-00186: https://rscf.ru/en/p roject/25-12-0018
PY - 2026/7/11
Y1 - 2026/7/11
N2 - This research presents a Brillouin optical time-domain reflectometry (BOTDR) system based on a self-sweeping fiber laser. The main advantage of the proposed system is the use of a passively tunable self-sweeping fiber laser as the probe radiation source. This eliminates the need for active frequency tuning, phase-locking loops, or synchronization with the second laser source. A heterodyne detection technique implemented in the BOTDR measurements is described in detail. The Brillouin frequency shift measurements in a 50-km-long sensing line are presented. The repeatability over 5 measurements was estimated to be better than 2 MHz at 25 km and 8 MHz at the line's end with a spatial resolution of 5 m for the measurement time of 20 min. The sensing capabilities of the system were also verified by detecting a strained fiber section, confirming the spatial resolution and repeatability. The proposed approach can be used to reduce the cost and simplify BOTDR systems, enhancing their attractiveness for practical distributed sensing applications.
AB - This research presents a Brillouin optical time-domain reflectometry (BOTDR) system based on a self-sweeping fiber laser. The main advantage of the proposed system is the use of a passively tunable self-sweeping fiber laser as the probe radiation source. This eliminates the need for active frequency tuning, phase-locking loops, or synchronization with the second laser source. A heterodyne detection technique implemented in the BOTDR measurements is described in detail. The Brillouin frequency shift measurements in a 50-km-long sensing line are presented. The repeatability over 5 measurements was estimated to be better than 2 MHz at 25 km and 8 MHz at the line's end with a spatial resolution of 5 m for the measurement time of 20 min. The sensing capabilities of the system were also verified by detecting a strained fiber section, confirming the spatial resolution and repeatability. The proposed approach can be used to reduce the cost and simplify BOTDR systems, enhancing their attractiveness for practical distributed sensing applications.
KW - BOTDR
KW - Brillouin reflectometry
KW - Distributed sensing
KW - Self-sweeping
KW - Strain measurement
KW - Brillouin reflectometry
KW - BOTDR
KW - Self-sweeping
KW - Distributed sensing
KW - Strain measurement
UR - https://www.mendeley.com/catalogue/3cd759c8-103a-36e8-ab71-b5dd190a79df/
UR - https://www.scopus.com/pages/publications/105044089925
U2 - 10.1016/j.optcom.2026.133561
DO - 10.1016/j.optcom.2026.133561
M3 - Article
VL - 620
JO - Optics Communications
JF - Optics Communications
SN - 0030-4018
ER -
ID: 82446668