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titleType: Subtitle
title: Measuring instrument for the spatial distribution of the refractive index based on a multi-mode fiber-optic interferometer
Creators: name: Ð¤Ð°Ð¹Ð·ÑÐ»Ð»Ð¸Ð½, ÐÐµÐ½Ð¸ÑÐ»Ð°Ð¼
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2022
Subjects: ÐÐ°ÑÐ¸Ð½Ð½Ð¾Ðµ Ð¾Ð±ÑÑÐµÐ½Ð¸Ðµ
ÐÐµÐ¹ÑÐ¾Ð½Ð½ÑÐµ ÑÐµÑÐ¸
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Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð² Ð¼ÐµÐ¶Ð¼Ð¾Ð´Ð¾Ð²Ð¾Ð³Ð¾ Ð²Ð¾Ð»Ð¾ÐºÐ¾Ð½Ð½Ð¾-Ð¾Ð¿ÑÐ¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð¸Ð½ÑÐµÑÑÐµÑÐ¾Ð¼ÐµÑÑÐ°
Ð¸Ð·Ð¼ÐµÑÐµÐ½Ð¸Ðµ ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð² Ð¼ÐµÐ¶Ð¼Ð¾Ð´Ð¾Ð²Ð¾Ð³Ð¾ Ð²Ð¾Ð»Ð¾ÐºÐ¾Ð½Ð½Ð¾-Ð¾Ð¿ÑÐ¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð¸Ð½ÑÐµÑÑÐµÑÐ¾Ð¼ÐµÑÑÐ°
multi-mode fiber optic interferometer
multicomponent signal processing
simulation of multi-mode fiber optic interferometer signals
measurement of multi-mode fiber optic interferometer signals

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description: Topic of the final qualification work: "Measuring instrument for the spatial distribution of the refractive index based on a multi-mode fiber-optic interferometer". This work is devoted to signal processing of multi-mode fiber-optic interferometers. To improve the efficiency of signal processing of multi-mode fiber-optic interferometers, the use of spectral interferometry methods was proposed. The signals of a multi-mode fiber-optic interferometer are simulated. The possibility of using machine learning to find the spatial distribution of the refractive index was explored. The effect of transformations performed on the spectra of processed signals on the accuracy of determining the spatial distribution of the refractive index was shown.The Fourier transform of the simulated spectra before feeding them to the input of the neural network was chosen as the optimal processing method. The possibility of using machine learning methods, such as neural networks, has been experimentally demonstrated to analyze patterns in changing signals of a complex structure. The results obtained can be used for processing multicomponent signals of multi-mode fiber optic interferometers and other fiber optic sensors.