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Başlık için Elektronik ve Haberleşme Mühendisliği Bölümü listeleme

Başlık için Elektronik ve Haberleşme Mühendisliği Bölümü listeleme

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  • Babinet's principle in the Fraunhofer diffraction by a finite thin wire 
    Umul, Yusuf Ziya (Elsevier GMBH, 2011)
    The scattered waves by a thin finite wire are evaluated by using the Rayleigh-Sommerfeld integral in the Fraunhofer approximation. The scattered fields by the complementary thin wire are also obtained with the aid of the ...
  • Babinet's principle in the Fraunhofer diffraction by a finite thin wire 
    Umul, Yusuf Ziya (Elsevier GMBH, 2011)
    The scattered waves by a thin finite wire are evaluated by using the Rayleigh-Sommerfeld integral in the Fraunhofer approximation. The scattered fields by the complementary thin wire are also obtained with the aid of the ...
  • Beam diffraction by a resistive half-plane 
    Umul, Yusuf Ziya (Optical Soc Amer, 2015-04-01)
    The scattering of a Gaussian beam by a resistive half-screen is investigated. Far-field approximation is used in evaluation of geometrical optics and diffracted waves. The uniform expression of the diffracted waves by the ...
  • Beam wander characteristics of cos and cosh-Gaussian beams 
    Çil, Celal Zaim; Eyyuboğlu, Halil T.; Baykal, Yahya; Cai, Yangjian (Springer, 2009-06)
    Within the context of a general beam formulation, beam wander characteristics of cos and cosh-Gaussian beams are derived and numerically evaluated. In our graphs, the fundamental Gaussian beam is used as a benchmark for ...
  • Beam Wander Characteristics of Flat-Topped, Dark Hollow, Cos and Cosh-Gaussian, J(0)- And I-0- Bessel Gaussian Beams Propagating In Turbulent Atmosphere: A Review 
    Eyyuboğlu, Halil T.; Baykal, Yahya; Çil, Celal Z.; Korotkova, Olga; Cai,Yangjian (Spie-Int Soc Optical Engineering, 2010)
    In this paper we review our work done in the evaluations of the root mean square (rms) beam wander characteristics of the flat-topped, dark hollow, cos-and cosh Gaussian, J(0)-Bessel Gaussian and the I-0-Bessel Gaussian ...
  • Beam wander of dark hollow, flat-topped and annular beams 
    Eyyuboğlu, Halil T.; Çil, Celal Zaim (Springer Heidelberg, 2008-11)
    Benefiting from the earlier derivations for the Gaussian beam, we formulate beam wander for dark hollow (DH) and flat-topped (FT) beams, also covering the annular Gaussian (AG) beam as a special case. Via graphical ...
  • Beam Wander of J (0)- and I (0)-Bessel Gaussian Beams Propagating In Turbulent Atmosphere 
    Çil, Celal Zaim; Eyyuboğlu, Halil T.; Bykal, Yahya; Korotkova, Olga; Cai, Yangjian (Springer, 2010-01)
    Root mean square (rms) beam wander of J (0)-Bessel Gaussian and I (0)-Bessel Gaussian beams, normalized by the rms beam wander of the fundamental Gaussian beam, is evaluated in atmospheric turbulence. Our formulation is ...
  • Beam wander of J (0)- and I (0)-Bessel Gaussian beams propagating in turbulent atmosphere 
    Çil, Celal Zaim; Eyyuboğlu, Halil T.; Baykal, Yahya; Korotkova, Olga; Cai, Yangjian (Springer, 2010-01)
    Root mean square (rms) beam wander of J (0)-Bessel Gaussian and I (0)-Bessel Gaussian beams, normalized by the rms beam wander of the fundamental Gaussian beam, is evaluated in atmospheric turbulence. Our formulation is ...
  • Beams with arbitrary field profiles in turbulence - art. no. 652209 
    Baykal, Yahya (Spie-Int Soc Optical Engineering, 2006)
    Characteristics of optical beam incidences that have arbitrary field profiles are examined when they propagate in the turbulent atmosphere. Arbitrary source field profile is introduced by decomposing the source into ...
  • Ber anaylsis for super lorentz-gaussian laser beamspropagating in turbulent media 
    Gökçe, Muhsin Caner; Sarı, Filiz; Özek, Faruk (Gazi Univ, Fac Engineering Architecture, 2013-12)
    In this work, BER-SNR variation of super Lorentz-Gaussian laser beam that propagating horizontally path in turbulent media is analyzed. Using scintillation index which is obtained by extented Huygens-Fresnel principle, BER ...
  • BER evaluations for multimode beams in underwater turbulence 
    Altay Arpalı, Serap; Baykal, Yahya; Arpalı, Çağlar (Taylor&Francis Ltd., 2016)
    In underwater optical communication links, bit error rate (BER) is an important performance criterion. For this purpose, the effects of oceanic turbulence on multimode laser beam incidences are studied and compared in terms ...
  • BER for Higher Order Laser Modes in Optical Wireless Underwater Communications 
    Altay Arpalı, Serap; Baykal, Yahya; Arpalı, Çağlar (IEEE, 2016)
    Average bit error rate (<BER>) of an underwater optical communication system is analyzed for higher order laser beams. For this purpose, the effects of oceanic turbulence parameters and link parameters on single mode higher ...
  • BER of annular and flat-topped beams in non-Kolmogorov weak turbulence 
    Gerçekçioğlu, Hamza; Baykal, Yahya (Elsevier Science Bv, 2013-01-01)
    The average bit error rate (BER) of multi-Gaussian beams in non-Kolmogorov weak turbulence is examined. For each specific incidence of annular and flat-topped optical beam, a power law of non-Kolmogorov spectrum is found ...
  • BER of annular and flat-topped beams in strong turbulence 
    Gerçekçioğlu, Hamza; Baykal, Yahya (Elsevier Science Bv, 2013-07-01)
    The average bit error rate (< BER >) of annular and flat-topped beams are evaluated in strong turbulence. In this respect, our earlier results on the scintillation indices obtained by the unified Rytov method are employed ...
  • Ber of Annular Beams in Strong Turbulence 
    Gerçekçioğlu, Hamza; Baykal, Yahya; Eyyuboğlu, Halil T. (2010)
    Bit error rate (BER) of annular beams is found in strong turbulence. Examining effects of beam and medium parameters on BER reveals that annular beams become favorable in stronger turbulence and at smaller focal lengths.
  • Bessel Beam Diffraction by an Aperture in an Opaque Screen 
    Başdemir, Hüsnü Deniz (2015)
    The scattering of the Bessel beam by a circular aperture in an opaque screen is investigated by the geometrical theory of diffraction approach. The geometrical optics and diffracted and scattered fields are obtained. The ...
  • Binary Phase Shift Keying-Subcarrier Intensity Modulation Performance in Weak Oceanic Turbulence 
    Gökçe, Muhsin Caner; Baykal, Yahya; Ata, Yalçın (Elsevier B.V., 2019-12)
    The performance analysis of underwater wireless optical communication (UWOC) system that employs binary phase shift keying-subcarrier intensity modulation (BPSK-SIM) is investigated in weak oceanic turbulence. BPSK-SIM ...
  • Bit error rate analysis of Gaussian, annular Gaussian, cos Gaussian, and cosh Gaussian beams with the help of random phase screens 
    Eyyuboğlu, Halil T. (Optical Soc Amer, 2014-06-10)
    Using the random phase screen approach, we carry out a simulation analysis of the probability of error performance of Gaussian, annular Gaussian, cos Gaussian, and cosh Gaussian beams. In our scenario, these beams are ...
  • Bit error rate analysis of MISO FSO systems 
    Gökçe, Muhsin Caner; Baykal, Yahya; Uysal, Murat (Taylor&Francis Ltd., 2016)
    Multiple-input single-output (MISO) systems are employed in free space optical (FSO) links to mitigate the degrading effects of atmospheric turbulence. In this paper, we consider a MISO FSO system with practical transmitter ...
  • Bit Error Rate of A Gaussian Beam Propagating Through Biological Tissue 
    Altay Arpalı, Serap; Arpalı, Çağlar; Baykal, Yahya (Bit Error Rate of A Gaussian Beam Propagating Through Biological Tissue, 2020-01-23)
    The scintillation index and bit error rate (BER) of a Gaussian beam propagating in a weakly turbulent soft tissue are formulated and analysed numerically. The scintillation indices are plotted against half of the measured ...