Spectral model of optical scintillation for terrestrial free-space optical communication link design

Kyung Hwan Kim*, Takeshi Higashino, Katsutoshi Tsukamoto, Shozo Komaki, Kamugisha Kazaura, Mitsuji Matsumoto

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


Since a deep and long-term fading in optical intensity results in considerable burst errors in the data, a terrestrial free-space optical (FSO) system has to be designed with consideration of a frequency characteristic of optical scintillation to achieve high quality wireless services over the link. In designing a terrestrial FSO link, we had better design the system considering variations caused by some slow time-varying parameters. This paper proposes a Butterworth-type spectral model of optical scintillation to design a terrestrial FSO link, which enables us to estimate the power spectral density of optical scintillation in a current optical wireless channel when time zone and weather parameters, such as temperature and rainfall intensity, are given. The spectral parameters of optical scintillation, cut-off frequency, and spectral slope are estimated from the data obtained in the experiment, and then their dependencies on time zone, temperature, and rainfall intensity are examined.

Original languageEnglish
Article number035005
JournalOptical Engineering
Issue number3
Publication statusPublished - 2011 Mar


  • intensity fluctuation
  • optical scintillation
  • power spectral density
  • terrestrial free-space optical communication

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering(all)


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