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Yayımcı "Optical Soc Amer" için Elektronik ve Haberleşme Mühendisliği Bölümü Yayın Koleksiyonu listeleme

Yayımcı "Optical Soc Amer" için Elektronik ve Haberleşme Mühendisliği Bölümü Yayın Koleksiyonu listeleme

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  • Physical optics-based diffraction coefficient for a wedge with different face impedances 
    Umul, Yusuf Ziya (Optical Soc Amer, 2018-03-20)
    A new diffraction field expression is introduced with the aid of the modified theory of physical optics for a wedge with different face impedances. First, the scattered geometrical optics fields are determined when both ...
  • Propagation analysis of Ince-Gaussian beams in turbulent atmosphere 
    Eyyuboğlu, Halil T. (Optical Soc Amer, 2014-04-10)
    We analyze the properties of Ince-Gaussian beams propagating in turbulent atmosphere. Due to analytic difficulties, this analysis is done with the aid of a random phase screen setup. Intensity profile, beam size, and the ...
  • Propagation of an Airy beam through the atmosphere 
    Ji, X.L.; Eyyuboğlu, Halil T.; Ji, Guangming; Xiaoling, Ji (Optical Soc Amer, 2013-01-28)
    In this paper, the effect of thermal blooming of an Airy beam propagating through the atmosphere is examined, and the effect of atmospheric turbulence is not considered. The changes of the intensity distribution, the ...
  • Scattered fields of conducting half-plane between two dielectric media 
    Umul, Yusuf Ziya; Yalçın, Uğur (Optical Soc Amer, 2010-07-10)
    We investigate the scattering process of plane waves by a conducting half-plane between two dielectric media by introducing novel boundary conditions, in terms of soft and hard surfaces. The cases of soft and hard half-planes ...
  • Scattering by a conductive half-screen between isorefractive media 
    Umul, Yusuf Ziya (Optical Soc Amer, 2015-12-10)
    The scattering process of electromagnetic waves by a conductive half-plane, located between isorefractive media, is investigated. First, the conductive sheet at the interface of isorefractive media is considered. The ...
  • Scattering of a Gaussian beam by an impedance half-plane 
    Umul, Yusuf Ziya (Optical Soc Amer, 2007-10)
    The diffraction of a Gaussian beam by an impedance half-plane is studied through the method of the modified theory of physical optics. An electric line source, which is defined in the complex space, is used to represent ...
  • Scattering of a line source by a cylindrical parabolic impedance surface 
    Umul, Yusuf Ziya (Optical Soc Amer, 2008-07)
    The scattering of the radiated fields of a line source by a cylindrical parabolic reflector, which has impedance boundary conditions on its surface, is obtained by using the surface integrals of the modified theory of ...
  • Scattering of inhomogeneous plane waves by a resistive half-screen 
    Umul, Yusuf Ziya (Optical Soc Amer, 2013-12-01)
    The scattering process of inhomogeneous plane waves by a resistive half-plane is investigated by using the exact diffracted field expressions. The uniform field representations are obtained with the aid of the uniform ...
  • Scintillation analysis of multiple-input single-output underwater optical links 
    Gökçe, Muhsin Caner; Baykal, Yahya (Optical Soc Amer, 2016-08-01)
    Multiple-input single-output (MISO) techniques are employed in underwater wireless optical communication (UWOC) links to mitigate the degrading effects of oceanic turbulence. In this paper, we consider a MISO UWOC system ...
  • Scintillation analysis of truncated Bessel beams via numerical turbulence propagation simulation 
    Eyyuboğlu, Halil T.; Voelz, David; Xiao, Xifeng (Optical Soc Amer, 2013-11-20)
    Scintillation aspects of truncated Bessel beams propagated through atmospheric turbulence are investigated using a numerical wave optics random phase screen simulation method. On-axis, aperture averaged scintillation and ...
  • Scintillation characteristics of cosh-Gaussian beams 
    Eyyuboğlu, Halil T.; Baykal, Yahya (Optical Soc Amer, 2007-03-01)
    By using the generalized beam formulation, the scintillation index is derived and evaluated for cosh-Gaussian beams in a turbulent atmosphere. Comparisons are made to cos-Gaussian and Gaussian beam scintillations. The ...
  • Scintillation index of elliptical Gaussian beam in turbulent atmosphere 
    Cai, Yangjian; Chen, Yuntian; Eyyuboğlu, Halil T.; Baykal, Yahya (Optical Soc Amer, 2007-08-15)
    A tensor method is used to formulate the on-axis scintillation index for an elliptical Gaussian beam (EGB; astigmatic Gaussian beam) propagating in a weak turbulent atmosphere. Variations of the on-axis scintillation of ...
  • Scintillation index of flat-topped Gaussian beams 
    Baykal, Yahya; Eyyuboğlu, Halil T. (Optical Soc Amer, 2006-01-01)
    The scintillation index is formulated for a flat-topped Gaussian beam source in atmospheric turbulence. The variations of the on-axis scintillations at the receiver plane are evaluated versus the link length, the size of ...
  • Scintillation index of flat-topped Gaussian laser beam in strongly turbulent medium 
    Gerçekçioğlu, Hamza; Baykal, Yahya (Optical Soc Amer, 2011-08)
    In a strongly turbulent medium, the scintillation index of flat-topped Gaussian beams is derived and evaluated. In the formulation, unified solution of Rytov method is utilized. Our results correctly reduce to the existing ...
  • Scintillation index of modified Bessel-Gaussian beams propagating in turbulent media 
    Eyyuboğlu, Halil T.; Baykal, Yahya; Sermutlu, Emre; Korotkova, Olga; Cai, Yangjian (Optical Soc Amer, 2009-02)
    The scintillation index is formulated for modified Bessel-Gaussian beams propagating in weakly turbulent media. Numerical calculations applied directly to the derived triple integral show that, for off-axis positions, the ...
  • Scintillation of astigmatic dark hollow beams in weak atmospheric turbulence 
    Cai, Yangjian; Eyyuboğlu, Halil T.; Baykal, Yahya (Optical Soc Amer, 2008-07)
    The scintillation properties of astigmatic dark hollow beams (DHBs) in weak atmospheric turbulence were investigated in detail. An explicit expression for the on-axis scintillation index of an astigmatic DH13 propagating ...
  • Scintillations of cos-Gaussian and annular beams 
    Eyyuboğlu, Halil T.; Baykal, Yahya (Optical Soc Amer, 2007-01)
    Based on the generalized beam formulation, we derive the scintillation index and selectively evaluate it for cos-Gaussian and annular beams propagating in weak atmospheric turbulence. Dependence of the scintillation index ...
  • Scintillations of higher-order laser beams in non-Kolmogorov medium 
    Baykal, Yahya (Optical Soc Amer, 2014-04-01)
    In an atmospheric medium that shows a non-Kolmogorov turbulence behavior, the variation of the on-axis scintillation index is evaluated when higher-order laser modes are used as the excitation. The Rytov method is employed ...
  • Scintillations of incoherent flat-topped Gaussian source field in turbulence 
    Baykal, Yahya; Eyyuboğlu, Halil T. (Optical Soc Amer, 2007-08-01)
    The intensity fluctuations of incoherent flat-topped Gaussian beams are evaluated when such sources are used in weakly turbulent horizontal atmospheric links. The formulation is developed for a detector having a response ...
  • Scintillations of optical plane and spherical waves in underwater turbulence 
    Ata, Yalçın; Baykal, Yahya (Optical Soc Amer, 2014-07-01)
    The scintillation indices of optical plane and spherical waves propagating in underwater turbulent media are evaluated by using the Rytov method, and the variations in the scintillation indices are investigated when the ...