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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Editor: Franco Gori
  • Vol. 29, Iss. 11 — Nov. 1, 2012
  • pp: 2360–2366

Experimental comparison of terahertz and infrared data signal attenuation in dust clouds

Ke Su, Lothar Moeller, Robert B. Barat, and John F. Federici  »View Author Affiliations


JOSA A, Vol. 29, Issue 11, pp. 2360-2366 (2012)
http://dx.doi.org/10.1364/JOSAA.29.002360


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Abstract

In order to study and compare propagation features of terahertz (THz) links with infrared (IR) links under different weather conditions such as turbulence, fog, and dust particles, THz and IR free space communication links at 625 GHz carrier frequency and 1.5 μm wavelength, respectively, with a maximum data rate of 2.5Gb/s have been developed. After propagating through the same channel perturbation caused by dust, attenuation of the carrier frequencies by dust as well as scintillation effects on both channels are analyzed by measuring the power attenuation and bit error rates. Attenuation by the presence of dust degrades the IR channel but exhibits almost no measurable impact on the THz signal. Numerical simulations of THz attenuation with different dust concentrations are presented and agree with the measured results.

© 2012 Optical Society of America

OCIS Codes
(010.1300) Atmospheric and oceanic optics : Atmospheric propagation
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(290.5930) Scattering : Scintillation
(040.2235) Detectors : Far infrared or terahertz
(060.2605) Fiber optics and optical communications : Free-space optical communication

ToC Category:
Detectors

History
Original Manuscript: July 6, 2012
Revised Manuscript: September 26, 2012
Manuscript Accepted: September 27, 2012
Published: October 18, 2012

Citation
Ke Su, Lothar Moeller, Robert B. Barat, and John F. Federici, "Experimental comparison of terahertz and infrared data signal attenuation in dust clouds," J. Opt. Soc. Am. A 29, 2360-2366 (2012)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-29-11-2360

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