Перегляд за автором "Fitio, V.M."

Сортувати за: Порядок: Результатів:

  • A determination of propagation constants of symmetric planar waveguide modes in a frequency domain 
    Fitio, V.M.; Romakh, V.V. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2014)
    In a new method of finding propagation constants of waveguide modes, the Fourier transform to wave equation is used. We change the differential equation by the integral one. Then we represent the latter equation in a ...
  • Coupling between propagated modes in optical fibers with periodical structures 
    Bobitski, Y.W.; Fitio, V.M.; Lebid, S.Yu. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2001)
    Theoretical analysis was conducted with the purpose for further development of spectral-sensitive elements for fiber optic devices including sensors of physical magnitudes. Forecasting performances of such elements is ...
  • Electromagnetic resonance absorption in metallic gratings 
    Fitio, V.M.; Laba, H.P.; Bobitski, Y.V. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2006)
    Reflection of electromagnetic waves with the 1.5 μm length from a metallic grating (silver) with rectangular groove profile was analyzed using the method of coupled waves. Appearance of the waveguide effect in a dielectric ...
  • Enhanced optical transmission of the triple-layer resonant waveguide structure 
    Yaremchuk, I.Ya.; Fitio, V.M.; Bobitski, Ya.V. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2016)
    In this paper, we propose and demonstrate a novel guided-mode resonant filter based on a metallic grating sandwiched between two dielectric layers for TE polarization. A theoretical model based on rigorous coupled wave ...
  • Performance of optical and hybrid joint transform correlators for tasks of optical security 
    Muravsky, L.I.; Kulynych, Ya.P.; Maksymenko, O.P.; Voronyak, T.I.; Pogan, L.Y.; Vladimirov, F.L.; Kostyukevych, S.A.; Fitio, V.M. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2002)
    Performance of optical and hybrid joint transform correlators (JTCs) for security verification of optical marks containing transformed phase masks (PMs) is studied. The peak-to-noise ratio (PNR) and relative intensity of ...
  • Prediction of a region with high transmission (reflectance) for bandpass interferential filters by using the method of pointer function 
    Yaremchuk, Ya.; Fitio, V.M.; Bobitski, Ya.V. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2008)
    The analysis of transmission spectrums of periodical multilayer interference thin-films systems is carried out. Spectral dependences of pointer function from wavelength for interference bandpass filters are obtained. ...
  • Search of mode wavelengths in planar waveguides by using Fourier transform of wave equation 
    Fitio, V.M.; Romakh, V.V.; Bobitski, Ya.V. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2016)
    The article describes a numerical method based on Fourier transform for studying propagating optical waves in dielectric planar waveguides. The inverse problem to the known direct one in waveguide investigation is proposed, ...
  • Selective unequal-thickness thin-film filters for IR spectral region 
    Yaremchuk, I.Ya.; Fitio, V.M.; Bobitski, Ya.V. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2008)
    A new five-layer structure of the dielectric interference filter for the infra-red region of spectrum is investigated. The main spectral parameters of such a narrow-band filter are determined. The dependence of the ...
  • The new approach to identification of film reflecting holographic marks 
    Kostyukevych, S.O.; Muravsky, L.I.; Fitio, V.M.; Voronyak, T.I.; Shepeliavyi, P.E.; Kostyukevych, K.V.; Moskalenko, N.L.; Pogoda, V.I. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2011)
    The new approach for creation of film reflecting holographic marks for optical security is proposed. Such marks are replicas of a reflecting master hologram recorded on a chalcogenide glass layer. To receive the master ...