Alexey Borisovich Pnev

Prof. Alexey Borisovich Pnev

Bauman Moscow State Technical University, Moscow, Moskva, Russia

Research Focus & Metrics

Academic Career Length

9Years (2018-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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4 March 2024 in Sensors
Verified
Journal Article
Open access
PDF file
VYVasily Yatseev
Vasily Yatseev
OBOleg V. Butov
Oleg V. Butov
APAlexey Borisovich Pnev
Alexey Borisovich Pnev
This paper is dedicated to the investigation of the metrological properties of phase-sensitive reflectometric measurement systems, with a particular focus on addressing the non-uniformity of responses along optical fibers. The authors highlight challenges associated with the stochastic distribution of Rayleigh reflectors in fiber optic systems and propose a methodology for assessing response non-uniformity using both cross-correlation algorithms and machine learning approaches, using chirped-reflectometry as an example. The experimental process involves simulating deformation impact by altering the light source’s wavelength and utilizing a chirped-reflectometer to estimate response non-uniformity. This paper also includes a comparison of results obtained from cross-correlation and neural network-based algorithms, revealing that the latter offers more than 34% improvement in accuracy when measuring phase differences. In conclusion, the study demonstrates how this methodology effectively evaluates response non-uniformity along different sections of optical fibers.

1 August 2018 in Measurement Techniques
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Journal Article
Closed access
PDF file
APAlexey Borisovich Pnev
Alexey Borisovich Pnev
ABA. V. Borisova
A. V. Borisova
YDYa A. Denisova
Ya A. Denisova
KSK. V. Stepanov
K. V. Stepanov
AZAndrey Zhirnov
Andrey Zhirnov
ACAnton Chernutsky
Anton Chernutsky

4 May 2026 in PHOTONICS Russia
Verified
Journal Article
Closed access
НИН.в. Ильговская
Н.в. Ильговская
СУС.д. Уткин
С.д. Уткин
РХР.и. Хан
Р.и. Хан
OBOleg V. Butov
Oleg V. Butov
APAlexey Borisovich Pnev
Alexey Borisovich Pnev
Предложен метод измерения длины одномодового оптического волокна, основанный на анализе спектральной плотности мощности дифференциального фазового шума в интерферометре Майкельсона, выполненном на прямых сколах оптоволокна в качестве отражателей. Алгоритм обработки сигналов включает демодуляцию на основе фазового разнесения в оптическом разветвителе 3 × 3, вычисление приближения спектральной плотности мощности методом Уэлша и оценку разницы длин плеч ИМ методом наименьших квадратов. Проведенное экспериментальное исследование подтвердило работоспособность метода, продемонстрировано разрешение измерения длины 26 мм.