Effect of strong local stretching of sensing fibre on the operation of a phase-sensitive optical time-domain reflectometer

被引：4

作者：

Bengalskii, D. M. ^{[1
,2
]}

Kharasov, D. R. ^{[1
,3
]}

Fomiryakov, E. A. ^{[1
,2
]}

Nikitin, S. P. ^{[1
]}

Nanii, O. E. ^{[1
,3
]}

Treshchikov, V. N. ^{[1
]}

机构：

[1] T8 Sensor & IC, Krasnobogatyrskaya Ul 44-1, Moscow 107076, Russia

[2] Lomonosov Moscow State Univ, Fac Phys, Moscow 119324, Russia

[3] Natl Res Univ, Moscow Inst Phys & Technol, Inst Skii Per 9, Dolgoprudnyi 141701, Moscow Region, Russia

来源：

QUANTUM ELECTRONICS | 2021年 / 51卷 / 02期

关键词：

fibre-optic sensor; distributed sensor; phase-sensitive optical reflectometer; piezoelectric effect; piezoelectric fibre modulator; strong impact on fibre; frequency modulation; correlation; RAYLEIGH-SCATTERING; NETWORK; RANGE;

D O I：

10.1070/QEL17369

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

It has been shown experimentally and confirmed by numerical simulation that strong local stretching of sensing fibre distorts the signal detected by a phase-sensitive optical time-domain reflectometer (OTDR) from the fibre section behind the local disturbance region. Comparison of experimental data with theoretical estimates and numerical simulation results leads us to conclude that the physical mechanism underlying the distortion of the OTDR trace is related to the external disturbance-induced variable shift of the optical carrier frequency of probe pulses.

引用

页码：175 / 183

页数：9

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