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DOI: 10.17586/1023-5086-2023-90-09-28-36
УДК: 681.7.068
Method of packaging a fiber Bragg grating for passive temperature compensation
Full text on elibrary.ru
Publication in Journal of Optical Technology
Куликова В.А., Варжель С.В., Дмитриев А.А., Волошина А.Л., Клишина В.А., Калязина Д.В. Методика корпусирования волоконной брэгговской решетки для ее пассивной температурной компенсации // Оптический журнал. 2023. Т. 90. № 9. С. 28–36. http://doi.org/10.17586/1023-5086-2023-90-09-28-36
Kulikova V.A., Varzhel S.V., Dmitriev A.A., Voloshina A.L., Klishina V.A., Kaliazina D.V. Method of packaging a fiber Bragg grating for passive temperature compensation [in Russian] // Opticheskii Zhurnal. 2023. V. 90. № 9. P. 28–36. http://doi.org/10.17586/1023-5086-2023-90-09-28-36
Subject of study. Theoretical and experimental study of the technique for creating a package for passive temperature compensation of a fiber Bragg grating. Aim of study. Development and research of the fiber Bragg grating packaging technique for passive temperature compensation. Method. Passive temperature compensation is based on grating deformation using a passive support made up of several materials with different coefficients of thermal expansion. The optical fiber, in which the Bragg grating was inscribed, is attached under a certain tension to an element with high coefficient of thermal expansion, which is attached to an element with low coefficient of thermal expansion. As the temperature increases, the compensating elements and the fiber grating will expand according to their coefficients of thermal expansion. Thus, the distance between the attachment points of the fiber to the element with high coefficient of thermal expansion will decrease, resulting in a decrease in fiber tension by exactly the amount necessary to compensate for the shift in the Bragg resonance of the grating caused by temperature change. Main results. In the course of this work, a new method of packaging the fiber Bragg grating for temperature compensation using a symmetrical passive support consisting of two materials with different coefficients of thermal expansion has been proposed. Using mathematical modeling, the main parameters of the proposed housing are calculated for the most effective temperature compensation. As a result of the experimental work, the temperature dependences of the Bragg resonance wavelength for an ordinary and athermal grating are presented. The Bragg wavelength shift for the grating in the package was 70 pm over the range from –15 to 105 °С. Practical significance. The scientific and technical solution proposed in the paper is of interest in various fields of fiber Bragg grating application, where the stability of the Bragg resonance wavelength plays a key role in the operation of systems.
fiber Bragg grating, Bragg grating packaging, passive thermal compensation, temperature, manufacturing process, athermalization
Acknowledgements:this work was supported by the Ministry of Science and Higher Education of Russian Federation, state assignment № 2019-0923
OCIS codes: 060.0060, 060.2310, 060.3735
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