Applied Physics and Mathematics Annotation << Back REVIEW OF SUPERSTRUCTURE BASED ON FIBER BRAGG GRATINGS R.F. IDRISOV The ability to change the refractive index of the core of an optical fiber under the influence of ultraviolet radiation is now widely used both in fiber-optic communication lines and for the development of sensitive elements of fiber-optic sensors. As is known, fiber periodic structures are sensitive to mechanical deformations, temperature effects and changes in the refractive index of the environment. A brief overview of the current state of research on the development of fiber optic superstructures is given. The most important spectral characteristics of fiber-optic superstructures based on Bragg intrafiber gratings (FBG) are considered. Periodic fiber structures are interesting for multi-parameter measurement of physical quantities. This paper describes the main modern methods of manufacturing photoinduced superstructures. In addition, there are changes in the spectral characteristics of reflection / transmission through the action of mechanical deformations on FBG. The FBG modification can be created by exposure to high temperatures. Etching of the optical fiber sheath can also control the reflection / transmission characteristics. The spectral properties of periodic modifications of short-period fiber gratings are presented. The proposed configuration is characterized by ease of manufacture, high flexibility, stability and low cost, and therefore has good prospects for the use of sensors, as well as other applications, such as multi-channel filters, distributed Bragg reflectors, etc. Keywords: fiber Bragg grating, long period grating, optical fiber superstructure. DOI: 10.25791/pfim.03.2020.1161 Pp. 15-27.