Study of Non-Diffraction Beam for Free Space Optical Communication

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Other Title
  • 光空間通信用非回折ビームに関する研究(学生及び若手発表,学生若手発表および一般)
  • 光空間通信用非回折ビームに関する研究
  • ヒカリ クウカン ツウシンヨウ ヒカイセツ ビーム ニ カンスル ケンキュウ

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Description

Non-diffraction beams can be obtained using a very small-width annular aperture that is placed in the back focal plane of a lens. However, since a rate of shielding of the annular aperture is very large, most incident waves are intercepted by the annular aperture. Therefore, the energy efficiency is very low. In this paper. the corn lens with a notch that generates a doughnut beam is loaded in front of the annular aperture to improve the energy efficiency. By numerical calculations, the relationships between the propagetion distance, the intensity of the non-diffraction beam and the rate of shielding of annuar aperture are examined.

Journal

  • ITE Technical Report

    ITE Technical Report 34.3 (0), 61-64, 2010

    The Institute of Image Information and Television Engineers

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