OSA's Digital Library

Journal of Optical Communications and Networking

Journal of Optical Communications and Networking

  • Editors: K. Bergman and V. Chan
  • Vol. 3, Iss. 2 — Feb. 1, 2011
  • pp: 145–154

Double-Laser Differential Signaling for Reducing the Effect of Background Radiation in Free-Space Optical Systems

Mohammad-Ali Khalighi, Fang Xu, Yacine Jaafar, and Salah Bourennane  »View Author Affiliations

Journal of Optical Communications and Networking, Vol. 3, Issue 2, pp. 145-154 (2011)

View Full Text Article

Enhanced HTML    Acrobat PDF (444 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



In order to reduce the impact of background radiation on the performance of terrestrial free-space optical systems, we propose to use two laser wavelengths and to perform the data detection at the receiver in a differential mode. We consider first the case of simple on–off keying modulation and show the performance improvement by using the proposed technique when the background noise dominates. We also extend our study to the case of pulse position modulation while proposing special signaling schemes that allow an increase in the data transmission rate at the same time as reducing the background noise effect.

© 2011 OSA

OCIS Codes
(060.4080) Fiber optics and optical communications : Modulation
(060.4510) Fiber optics and optical communications : Optical communications
(060.2605) Fiber optics and optical communications : Free-space optical communication

ToC Category:
Research Papers

Original Manuscript: May 17, 2010
Revised Manuscript: November 24, 2010
Manuscript Accepted: November 30, 2010
Published: January 31, 2011

Mohammad-Ali Khalighi, Fang Xu, Yacine Jaafar, and Salah Bourennane, "Double-Laser Differential Signaling for Reducing the Effect of Background Radiation in Free-Space Optical Systems," J. Opt. Commun. Netw. 3, 145-154 (2011)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. R. M. Gagliardi and S. Karp, Optical Communications, 2nd. ed., Wiley, 1995.
  2. W. R. Leeb, "Degradation of signal to noise ratio in optical free space data links due to background illumination," Appl. Opt. 28(15), 3443‒3449 (1989). [CrossRef] [PubMed]
  3. D. Rollins, J. Baars, D. Bajorins, C. Cornish, K. Fischer, and T. Wiltsey, "Background light environment for free-space optical terrestrial communications links," Proc. SPIE 4873, 99‒110 (2002).
  4. V. G. Sidorovich, "Solar background effects in wireless optical communications," Proc. SPIE 4873, 133‒142 (2002).
  5. M. A. Khalighi, N. Schwartz, N. Aitamer, and S. Bourennane, "Fading reduction by aperture averaging and spatial diversity in optical wireless systems," J. Opt. Commun. Netw. 1(6), 580‒593 (2009). [CrossRef]
  6. B. E. A. Saleh and M. C. Teich, Fundamentals of Photonics, Wiley, 1991.
  7. L. C. Andrews and R. L. Phillips, Laser Beam Propagation Through Random Media, 2nd. ed., SPIE Press, 2005.
  8. S. G. Wilson, M. Brandt-Pearce, Q. L. Cao, and M. Baedke, "Optical repetition MIMO transmission with multipulse PPM," IEEE Sel. Areas Commun. 23(9), 1901‒1910 (2005). [CrossRef]
  9. F. Xu, M. A. Khalighi, P. Caussé, and S. Bourennane, "Channel coding and time-diversity for optical wireless links," Opt. Express 17(2), 872‒887 (2009). [CrossRef] [PubMed]
  10. J. G. Proakis, Digital Communications, 3rd. ed., McGraw-Hill, 1995.
  11. J. Hagenauer, E. Offer, and L. Papke, "Iterative decoding of binary block and convolutional codes," IEEE Trans. Inform. Theory 42(2), 429‒445 (1996). [CrossRef]
  12. F. Xu, M. A. Khalighi, and S. Bourennane, "Coded PPM and multipulse PPM and iterative detection for free-space optical links," J. Opt. Commun. Netw. 1(5), 404‒415 (2009). [CrossRef]
  13. F. M. Davidson and X. Sun, "Gaussian approximation versus nearly exact performance analysis of optical communication systems with PPM signaling and APD receivers," IEEE Trans. Commun. 36(11), 1185‒1192 (1988). [CrossRef]
  14. C. C. Davis and I. I. Smolyaninov, "The effect of atmospheric turbulence on bit-error-rate in an on–off-keyed optical wireless system," Proc. SPIE 4489, 126‒137 (2002).
  15. M. A. Khalighi, Y. Jaafar, F. Xu, F. Chazallet, and S. Bourennane, "Double-laser differential signaling for suppressing background radiations in FSO systems," Queen’s 25th Biennial Symp. on Communications (QSBC), 2010, Kingston, Canada, pp. 238‒241.

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited