Category Archives: Статья

Generation of frequency-modulated optical IR pulses in a semiconductor waveguide structure with a realised space charge wave

A. S. Abramov, I. O. Zolotovskii, A. S. Kadochkin, S. G. Moiseev, I. S. Panyaev, D. G. Sannikov, M. S. Yavtushenko, V. V. Svetukhin, A. A. Fotiadi Ulyanovsk State University SPC “Technological Center” MIET Institute of Nanotechnologies of Microelectronics, Russian Academy of Sciences Université de Mons–Hainaut Abstract: The conditions for amplification and modulation of electromagnetic… Read More »

Fast numerical method of the second order of accuracy for solving the inverse scattering problem

O. V. Belai Institute of Automation and Electrometry, Siberian Branch of Russian Academy of Sciences, Novosibirsk Abstract: A method is proposed for the numerical solution of the inverse scattering problem formulated in the form of integral equations of the Gelfand–Levitan–Marchenko type. Approximation of integral equations is performed with the second order of accuracy, which leads… Read More »

Diffraction by a perfectly conducting strip grating

A. V. Nemykin, D. A. Shapiro Institute of Automation and Electrometry, Siberian Branch of Russian Academy of Sciences, Novosibirsk Abstract: The problem of scattering of an s-polarised wave by a periodic grating of thin ideally conducting strips at normal incidence is solved. The Riemann–Hilbert method is used to obtain an infinite system of equations for… Read More »

Hydrodynamic approximation for two-dimensional optical turbulence: symmetries of statistical distributions

V. N. Grebenev, A. N. Grishkov, S. B. Medvedev, M. P. Fedoruk Federal Research Center for Information and Computational Technologies Universidade de São Paulo, Instituto de Matemática e Estatística Novosibirsk State University Abstract: Optical turbulence is described in terms of multipoint probability density functions (PDFs) fn using the Lundgren–Monin–Novikov (LMN) equation (statistical form of the… Read More »

Scheme of signal processing in a receiver of multimode communication lines based on convolutional neural networks

O. S. Sidelnikov, A. A. Redyuk, M. P. Fedoruk Novosibirsk State University Abstract: A scheme is proposed for processing optical signals in a receiver of a multimode communication line based on deep convolutional neural networks and simulating the signal backpropagation method. For the scheme in question, the efficiency of compensation for nonlinear intramode and intermode… Read More »

Formation of laser-induced periodic structures on thin films of transition metal nitrides and semiconductors

K. A. Bronnikov, S. A. Gladkikh, K. A. Okotrub, V. P. Korolkov, A. A. Kuchmizhak, A. V. Dostovalov Institute of Automation and Electrometry, Siberian Branch of Russian Academy of Sciences, Novosibirsk Institute for Automation and Control Processes, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok Pacific Quantum Center, Far Eastern Federal University Abstract:… Read More »

Radiation resistance of fibre Bragg gratings under intense reactor irradiation

P. F. Kashaykin, S. A. Vasil’ev, A. L. Tomashuk, A. D. Ignat’ev, V. A. Britskii, A. A. Shaimerdenov, A. M. Akhanov, P. P. Silnyagin, T. V. Kulsartov Institute of Automation and Electrometry, Siberian Branch of Russian Academy of Sciences, Novosibirsk Fiber Optics Research Center of the Russian Academy of Sciences “FORC – Photonics” group, Moscow… Read More »

Direct laser writing of helical Bragg gratings in vortex silica fibre

V. V. Likhov, S. A. Vasil’ev, G. K. Alagashev, S. L. Semenov, A. G. Okhrimchuk Fiber Optics Research Center of the Russian Academy of Sciences D. Mendeleev University of Chemical Technology of Russia Abstract: Helical Bragg gratings (HBGs) are formed in silica-based multimode ring-core optical fibres by direct laser writing with a femtosecond laser beam.… Read More »

Coherent optical frequency reflectometer based on a self-scanning fibre laser for distributed measurements

D. A. Krivosheina, A. Yu. Tkachenko, I. A. Lobach, S. I. Kablukov Institute of Automation and Electrometry, Siberian Branch of Russian Academy of Sciences, Novosibirsk Novosibirsk State Technical University Novosibirsk State University Abstract: We report the possibility of measuring the temperature distribution along a conventional single-mode fibre by coherent optical frequency reflectometry using a self-scanning… Read More »

Single-mode P2O5–F–SiO2 optical fibres with an optimised acoustic profile: Influence of the optical refractive index contrast and dopant content of the core on maximum SBS gain suppression

S. V. Tsvetkov, M. E. Likhachev Fiber Optics Research Center of the Russian Academy of Sciences Abstract: We consider optical fibres with a modified radial profile of the acoustic refractive index. The use of two-component doping of the core in a silica optical fibre makes it possible to simultaneously create different refractive index profiles for… Read More »