Scintillation effect on intensity modulated laser communication systems-a laboratory demonstration

W. O. Popoola*, Z. Ghassemlooy, C. G. Lee, A. C. Boucouvalas

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

This paper shows the impact of atmospheric turbulence-induced fading on the symbol decision position in the on-off keying (OOK) and the binary phase shift keying (BPSK) subcarrier intensity modulated (SIM) laser communication link. Weak turbulence is simulated in the laboratory using a chamber equipped with heating elements and fans. We have shown that in atmospheric turbulence, it is advantageous to employ modulation schemes such as pulse time and subcarrier intensity modulations that do not directly impress data on the optical irradiance as is the case with the OOK. For the OOK-modulated laser communication system, atmospheric turbulence imposes complexity on the symbol decision subsystem and by extension places a limit on the achievable bit error rate (BER) performance. (C) 2009 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)682-692
Number of pages11
JournalOptics and laser technology
Volume42
Issue number4
DOIs
Publication statusPublished - Jun 2010

Keywords

  • Laser communications
  • Atmospheric turbulence
  • Free-space optics
  • SPACE OPTICAL COMMUNICATION
  • ATMOSPHERIC-TURBULENCE CHANNELS
  • DIVERSITY

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