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

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 ( OTDRs). It is shown that the operating dist...

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Bibliographic Details
Published in:Moscow University physics bulletin 2021-05, Vol.76 (3), p.167-175
Main Authors: Kharasov, D. R., Bengalskii, D. M., Fomiryakov, E. A., Nanii, O. E., Bukharin, M. A., Nikitin, S. P., Treshchikov, V. N.
Format: Article
Language:English
Subjects:
Attenuation
Distributed sensor systems
Femtosecond pulses
Mathematical and Computational Physics
Physics
Physics and Astronomy
Reflectometers
Reflectors
Theoretical
Time domain analysis
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Summary: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 ( OTDRs). It is shown that the operating distance of an OTDR 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).
ISSN:0027-1349
1934-8460
DOI:10.3103/S0027134921030048