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Tilted fiber Bragg gratings and their sensing applicationsa Kotel'nikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, ul. Mokhovaya 11, kor. 7, Moscow, 125009, Russian Federation b Dukhov Research Institute of Automatics, ul. Sushchevskaya 22, Moscow, 119017, Russian Federation c Institute for Theoretical and Applied Electrodynamics, Russian Academy of Sciences, ul. Izhorskaya 13/19, Moscow, 127412, Russian Federation d Moscow Institute of Physics and Technology (National Research University), Institutskii per. 9, Dolgoprudny, Moscow Region, 141701, Russian Federation e Chernyshevskii Saratov State University, ul. Astrakhanskaya 83, Saratov, 410071, Russian Federation The review covers the current achievements and prospects for the development of fiber sensorics associated with tilted fiber Bragg gratings (TFBGs), including metal-coated (plasmonic) sensors. The physical nature of the cladding modes excitation in such structures is discussed, and the main properties of TFBGs are considered. Special attention is paid to the sensing applications of TFBGs, including data processing methods for TFBG sensing systems. The fabrication process of tilted fiber Bragg gratings is described, as well as the method of thin metal films deposition onto the side surface of the fiber.
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