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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 6 — Mar. 16, 2009
  • pp: 4479–4484

BER performance analysis of radio over free-space optical systems considering laser phase noise under Gamma-Gamma turbulence channels

Wansu Lim, Changho Yun, and Kiseon Kim  »View Author Affiliations

Optics Express, Vol. 17, Issue 6, pp. 4479-4484 (2009)

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This paper analytically investigates a bit error rate (BER) performance of radio over free space optical (FSO) systems considering laser phase noise under Gamma-Gamma turbulence channels. An external modulation using a dual drive Mach-Zehnder modulator (DD-MZM) and a phase shifter is employed because a DD-MZM is robust against a laser chirp and provides high spectral efficiency. We derive a closed form average BER as a function of different turbulence strengths and laser diode (LD) linewidth, and investigate its analytical behavior under practical scenario. As a result, for a given average SNR with normalized perturbation, it is shown that the difference of average BER corresponding to two LDs (with linewidth of 624MHz and 10MHz) under weak turbulence is almost 3 times larger than that under strong turbulence.

© 2009 Optical Society of America

OCIS Codes
(000.0000) General : General

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: January 9, 2009
Revised Manuscript: February 22, 2009
Manuscript Accepted: March 3, 2009
Published: March 5, 2009

Wansu Lim, Changho Yun, and Kiseon Kim, "BER performance analysis of radio over free-space optical systems considering laser phase noise under Gamma-Gamma turbulence channels," Opt. Express 17, 4479-4484 (2009)

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  1. V. W. S. Chan, "Free-Space Optical Communications," J. Lightwave Technol. 24, 4750-4762 (2006). [CrossRef]
  2. M. A. Al-Habash, L. C. Andrews, and R. L. Phillips, "Mathematical model for the irradiance probability density function of a laser beam propagating through turbulent media," Opt. Eng. 40, 1554-1562 (2001). [CrossRef]
  3. G. H. Smith and D. Novak, "Overcoming chromatic-dispersion effects in fiber-wireless systems incorporating external modulators," IEEE Trans. Microwave Theory Tech. 45, 1410-1415 (1997). [CrossRef]
  4. R. W. Tkach and A. R. Chraplyvy, "Phase noise and linewidth in an InGaAsP DFB laser," J. Lightwave Technol. LT-4, 1711-1716 (1986). [CrossRef]
  5. T. Cho, C. Yun, J. Song, and K. Kim, "Analysis of CNR penalty of radio-over-fiber systems including the effects of phase noise from laser and RF oscillator," J. Lightwave Technol. 23, 4093-4100 (2005). [CrossRef]
  6. J. R. Barry and E. A. Lee, "Performance of coherent optical receivers," Proc. IEEE 78, 1369-1394 (1990). [CrossRef]
  7. K. Kiasaleh, "Performance of coherent DPSK free-space optical communication systems in K-distributed turbulence," IEEE Trans. Commun. 54, 604-607 (2006). [CrossRef]
  8. G. P. Agrawal, Fiber-Optic Communication Systems. (John Wiley and Sons, New York, 2002). [CrossRef]
  9. A. J. Viterbi, Principles of Coherent Communication. (McGraw-Hill, New York, 1966).
  10. The Wolfram function site (2004), http://functions.wolfram.com/.

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