title: Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° Ð°Ð½Ð°Ð»Ð¸ÑÐ¸ÑÐµÑÐºÐ¾Ð¹ Ð¼Ð¾Ð´ÐµÐ»Ð¸ ÑÐ¸Ð³Ð½Ð°Ð»Ð° Ð²Ð½ÐµÑÐ½ÐµÐ³Ð¾ Ð²Ð¾Ð»Ð¾ÐºÐ¾Ð½Ð½Ð¾Ð³Ð¾ Ð¸Ð½ÑÐµÑÑÐµÑÐ¾Ð¼ÐµÑÑÐ° Ð¤Ð°Ð±ÑÐ¸-ÐÐµÑÐ¾ Ñ Ð¼Ð½Ð¾Ð³Ð¾ÑÐ»Ð¾Ð¹Ð½ÑÐ¼ Ð·Ð°Ð·Ð¾ÑÐ¾Ð¼
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Development of an analytical model of the signal of an external fiber Fabry-Perot interferometer with a multilayer gap
Creators: name: ÐÐ²Ð´Ð¾ÐºÐ¸Ð¼ÐµÐ½ÐºÐ¾, ÐÐºÐ°ÑÐµÑÐ¸Ð½Ð°
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Ð½ÑÐµÑÑÐµÑÐ¾Ð¼ÐµÑÑÑ
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Fabry Perot
gauss beam

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description: The subject of the graduate qualification work is: "Development of an analytical model of the signal of an external fiber Fabry-Perot interferometer with a multilayer gap". Master's thesis is devoted to the development of an analytical model of the signal of an external Fabry-Perot fiber interferometer (EFPI) with a multilayer gap during spectral interrogation. In the work, a system of expressions was obtained for calculating the signal I(Î») of an EFPI with a multilayer gap, taking into account single reflections from the surfaces of the layers in the interferometer gap, and also taking into account the key design parameters: refractive indices, reflection coefficients of coatings (if any), layer thicknesses, loss in layers, taking into account the possible dependence on the wavelength. The propagation of radiation in a medium between interferometer gaps was considered within the framework of the Gaussian beam model. Examples of calculations for various design parameters were given and an analysis of the key properties of the resulting oscillations I(Î») was carried out. On the example of a two-layer EFPI, the calculation was carried out and the dependences I(Î») and their spectra were obtained. To test the adequacy of the developed model, an experiment was carried out with a two-layer interferometer (layers: air - silicon). The obtained experimental dependences I(Î») and their spectra for different thicknesses of the air layer were compared with the dependences calculated using the obtained model for similar design parameters. The comparison showed a good fit and confirmed the adequacy of the resulting model.