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The Maximum Operating Range of a Distributed Sensor Based on a Phase-Sensitive Optical Time-Domain Reflectometer Utilizing Telecommunication Fiber with Reflective Centers

D. R. Kharasov$^{1,2}$, D. M. Bengalskii$^{1,3}$, E. A. Fomiryakov$^{1,3}$, O. E. Nanii$^{1,2,3}$, M. A. Bukharin$^1$, S. P. Nikitin$^1$, V. N. Treshchikov$^1$

Moscow University Physics Bulletin 2021. N 3.

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Annotation

An optimal arrangement of point reflectors inscribed by femtosecond laser pulses in a standard telecommunication fiber is found, which provides the maximum operating range of distributed sensors based on phase-sensitive optical time-domain reflectometers (φOTDRs). It is shown that the operating distance of an φOTDR utilizing probe pulses with a duration of 200 ns can be increased by 53 km using ultra-low-loss fiber with an attenuation of 0.16 dB/km, thereby extending it to 173 km without using distributed, remotely pumped, or in-line amplifiers. When using the most widespread standard telecom fiber with an attenuation of 0.185 dB/km, the operating distance can be increased by 48 km (up to 152 km total).

Received: 2021 January 31
Approved: 2021 September 22
PACS:
42.81.Pa Sensors, gyros
42.62.Cf Industrial applications
Rissian citation:
Д. Р. Харасов, Д. М. Бенгальский, Э. А. Фомиряков, О. Е. Наний, М. А. Бухарин, С. П. Никитин, В. Н. Трещиков.
Максимальная дальность работы распределенных датчиков на основе когерентных импульсных оптических рефлектометров и телекоммуникационного волокна с отражательными центрами.
Вестн. Моск. ун-та. Сер. 3. Физ. Астрон. 2021. № 3. С. 36.
Authors
D. R. Kharasov$^{1,2}$, D. M. Bengalskii$^{1,3}$, E. A. Fomiryakov$^{1,3}$, O. E. Nanii$^{1,2,3}$, M. A. Bukharin$^1$, S. P. Nikitin$^1$, V. N. Treshchikov$^1$
$^1$Т8 Sensor Ltd
$^2$Phystech School of Radio Engineering and Computer Technology, Moscow Institute of Physics and Technology
$^3$Physics Department, M.V. Lomonosov Moscow State University, chair of Optics, Spectroscopy and Nanosystems.
Issue 3, 2021

Moscow University Physics Bulletin

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This new information publication, which is intended to convey to the staff, students and graduate students, faculty colleagues and partners of the main achievements of scientists and scientific information on the events in the life of university physicists.