Methodology for selection of the optimal operating spectral range of a Fabry–Perot interferometer based on chirped fiber Bragg gratings

Sycheva S.D., Akhmerov A.K., Deineka I.G., Kuznetsov V.N., Pikha D.V., Volkovskii S.A., Yandybaeva, Y.I., Dmitriev, A.A.

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For Russian citation (Opticheskii Zhurnal):

Сычева С.Д., Ахмеров А.Х., Дейнека И.Г., Кузнецов В.Н., Пиха Д.В., Волковский С.А., Яндыбаева Ю.И., Дмитриев А.А. Методика определения оптимального рабочего спектрального диапазона интерферометра Фабри–Перо на основе чирпированных волоконных решеток Брэгга // Оптический журнал. 2025. Т. 92. № 7. С. 62–72. http://doi.org/10.17586/1023-5086-2025-92-07-62-72

Sycheva S.D., Akhmerov A.Kh., Deyneka I.G., Kuznetsov V.N., Pikha D.V., Volkovsky S.A., Yandybaeva Yu.I., Dmitriev A.A. Methodology for selection of the optimal operating spectral range of a Fabry–Perot interferometer based on chirped fiber Bragg gratings [in Russian] // Opticheskii Zhurnal. 2025. V. 92. № 7. P. 62–72. http://doi.org/10.17586/1023-5086-2025-92-07-62-72

For citation (Journal of Optical Technology):

Abstract:

Subject of research. Methodology for determining the optimal operating spectral range of a Fabry–Perot interferometer based on chirped fiber Bragg gratings. Purpose of work. Development and research of optimal operating wavelength range adjustment methodology for Fabry–Perot interferometer based on chirped fiber Bragg gratings. Method. Sequential change of the vertical-emitting laser central wavelength and subsequent analysis of the signal-to-noise ratio of the data from the Fabry–Perot interferometer based on chirped fiber Bragg gratings sensor as part of the research setup, under conditions of pulsed acoustic action on a steel plate. The criteria for selection the operating spectral range in signal analysis is the achieved maximum value of the signal-to-noise ratio. Main results. An original methodology for determining the optimal operating wavelength range of a Fabry–Perot interferometer based on chirped fiber Bragg gratings has been developed. A signal-to-noise ratio of 23.5 dB has been achieved. Data repeatability assessment has shown that the standard deviation of signal-to-noise ratio values is 0.4 dB. Practical significance. The proposed methodology can be used to create new technological solutions, in particular to solve the problem of non-destructive testing of industrial objects. Fabry–Perot interferometers based on chirped fiber Bragg gratings can be used in more complex conditions due to their increased sensitivity, ensuring stable registration of less powerful acoustic effects.

Keywords:

Fabry–Perot interferometer, chirped fiber Bragg gratings, acoustic measurements

Acknowledgements:

the work was supported by the Russian Science Foundation, project № 23-79-01274

OCIS codes: 120.4290, 120.2230, 040.2840

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Одобрена после рецензирования 20.03.2025

Принята к печати 30.05.2025 // Дисс. канд. техн. наук. 05.11.01. СПб.: Университет ИТМО, 2018.

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