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Radiophotone polygaromonic sensing broadband fiber-optical structures in telecommunication systems

Keywords:

I.I. Nureyev - Dr.Sc. (Eng.), Associate Professor, Professor, Department of Radiophotonics and Microwave Technologies, Kazan National Research Technical University named after A.N. Tupolev (KNITU–KAI)
E-mail: n2i2@mail.ru
A.F. Aglyullin - Director, OOO «NPF MFS» (Kazan)
E-mail: mfsmed@mail.ru
V.V. Purtov - General Director, OOO «INFOCOM-SPb» (Sankt-Petersburg)
E-mail: purvad@mail.ru
D.L. Ovchinnikov - Director, OOO «ITECON» (Kazan)
E-mail: Dovchinncov@itecon.ru
O.G. Morozov – Professor, Head of the Department of Radiophotonics and Microwave Technology, Kazan National Research Technical University named after A.N. Tupolev (KNITU–KAI)
E-mail: microoil@mail.ru
D.I. Kasimova - Master of Science, Post-Graduate Student, Department of Radiophotonics and Microwave Technology, Kazan National Research Technical University named after A.N. Tupolev (KNITU–KAI)
E-mail: dilya_kas@mail.ru
L.M. Faskhutdinov – Master of Science, Post-Graduate Student, Department of Radiophotonics and Microwave Technology, Kazan National Research Technical University named after A.N. Tupolev (KNITU–KAI)
E-mail: fatum.fl@gmail.com


The development of the technology of fiber-optic sensors is inextricably linked with the development of the technology of fiber-optic telecommunication systems (FOTS). The increased capabilities of telecommunication technologies allow the creation of spatially spaced and multidimensional sensor networks. On the other hand, the development of sensor technologies, in turn, allows the creation of highly efficient monitoring systems for telecommunications networks, in particular their selective elements, which include wave etalons, add/drop multiplexers, thin-film filters, arrayed waveguide gratings, widely used Fiber Bragg gratings (FBG), etc.
Selective elements of FOTS can be conditionally divided into «narrowband», used in networks with a transmission speed of up to 10-40 Gb/s, and «broadband», used in networks with a transmission speed of up to 40-100 Gb/s. They correspond to pass bands of selective elements up to and above 0.3 nm (40 GHz).
The implementation of microwave photonic poly-harmonic systems for the interrogation of fiber optic sensor systems (FOSS) could introduce universality into the measurement process, the use of which would lead to the expansion of their functionality in the practice of applying the principles of FOSS construction for FOTS elements monitoring (as individual narrow-band selective elements, so and broadband multiplexers, such as, FBG and ROADM).
In this article, the advantages of the unity of sensory and telecommunication approaches are shown, using examples of monitoring systems of telecommunication passive elements of various levels. Their combination is much more effective, both in terms of the number of channels per fiber, and in terms of the number of channels per laser. Generally, when designing a FOTS, it is necessary to take into account the close relationship that exists between all the factors that determine the characteristics of the network, with the existing economic conditions, which will create an optimal network, given the monitoring system or FOSS.

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