O.G. Morozov - Dr.Sc. (Eng.), Professor, Head of the Radiophotonics and Microwave Technologies Department, Kazan National Research Technical University named after A.N. Tupolev. E-mail: microoil@mail.ru
I.I. Nureev - Ph.D. (Eng.), Assistant Professor, the Radiophotonics and Microwave Technologies Department, Kazan National Research Technical University named after A.N. Tupolev. E-mail: n2i2@mail.ru
S.V. Feofilaktov - Post-graduate Student, the Radiophotonics and Microwave Technologies Department, Kazan National Research Technical University named after A.N. Tupolev. E-mail: fsv@irz.ru
D.A. Cherepanov - Post-graduate Student, the Radiophotonics and Microwave Technologies Department, Kazan National Research Technical University named after A.N. Tupolev. E-mail: irtos@irz.ru

The application of software-defined networks concept for down-hole fiber-optic telemetry systems as analogue of multilayer and multiservice net for information (measuring, probing, controlling and etc.) forwarding and receiving is considered. Characteristics and prospects of these systems development taking into account given approach are analyzed, in particular, to determine the distribution of temperature and pressure in the wellbore, based on the use of non-linear effects of stimulated Raman and Mandelstam-Brillouin scatterings, Rayleigh backscattering and reflection from the fiber Bragg gratings. Presented study announces applicability of the software defined networks concept for fiber optic down-hole telemetry systems based on the process control unity for combined nonlinear reflectometry, comprising the procedures of forming a fiber distributed or quasi-point distributed nature of the response of different temperature and pressure in a borehole, and registration of the response spectral characteristics using poly-harmonic analysis, based on their similar quasi-resonance character. Approaches for the implementation of the developed concepts, including the design of physical interfaces for the formation of adaptive responses of the control panel from the heterogeneous processes, occurring in the optical fiber within the well, on the basis of structured Bragg gratings, and for synthesis of multiphase down-hole flow meter, utilizing for measuring conversion the poly-factor responses of different nature from signals of scattering and reflection, are discussed.