• Title/Summary/Keyword: Quasi-Homogenous source

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Augmenting Quasi-Tree Search Algorithm for Maximum Homogenous Information Flow with Single Source/Multiple Sinks

  • Fujita, Koichi;Watanabe, Hitoshi
    • Proceedings of the IEEK Conference
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    • 2002.07a
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    • pp.462-465
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    • 2002
  • This paper presents a basic theory of information flow from single sending point to multiple receiving points, where new theories of algebraic system called "Hybrid Vector Space" and flow vector space play important roles. Based on the theory, a new algorithm for finding maximum homogenous information flow is proposed, where homogenous information flow means the flow of the same contents of information delivered to multiple clients at a time. Effective multi-routing algorithms fur tree-shape delivery rout search are presented.

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Polarization Properties of Quasi-Homogeneous Beams Propagating in Oceanic Turbulence

  • Chen, Feinan;Zhao, Qi;Chen, Yanru;Chen, Jingjing
    • Journal of the Optical Society of Korea
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    • v.17 no.2
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    • pp.130-135
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    • 2013
  • Based on the extended Huygens-Fresnel principle and generalized Stokes theory, the evolution of polarization properties of beams generated by quasi-homogenous (QH) sources propagating in clear oceanic water was studied by the use of the oceanic turbulence spatial spectrum function. The results show that the beams have similar polarization self-reconstructed behavior under different turbulence conditions in the far field, but if the propagation distance is not long enough, the degree of polarization (DOP) fluctuates with much more complexity than state of polarization (SOP) of QH beams. The self-reconstructed ability of DOP at the special distance in turbulence would get to the best value if the values of coherence of width were chosen suitably, but for SOP, it has no best value.