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Proceedings Article

Optical free-space communications at middle-infrared wavelengths

[+] Author Affiliations
Rainer Martini, Chris Glazowski, Edward A. Whittaker

Stevens Institute of Technology (USA)

Warren W. Harper, Yin-Fong Su, John F. Schultz

Pacific Northwest National Lab. (USA)

Claire Gmachl

Princeton Univ. (USA)

Federico Capasso

Harvard Univ. (USA)

Deborah L. Sivco, Alfred Y. Cho

Lucent Technologies/Bell Labs. (USA)

Proc. SPIE 5359, Quantum Sensing and Nanophotonic Devices, 196 (July 6, 2004); doi:10.1117/12.516517
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From Conference Volume 5359

  • Quantum Sensing and Nanophotonic Devices
  • Manijeh Razeghi; Gail J. Brown
  • San Jose, CA, United States | January 26, 2004

abstract

We consider the application of mid-infrared (MIR) wavelength quantum cascade lasers (QCL) as sources for free-space optical communications. QCL"s possess high modulation bandwidth and excellent optical performance in the atmospherically transparent MIR spectral range. In order to investigate this potential application area, we have performed a series of comparative evaluations on analog and digital free-space optical links operating in the near-infrared (NIR) (830nm, 1300nm and 1550nm) and mid-infrared (8μm). The measurements were made using well controlled atmospheric conditions in the 65ft long Pacific Northwest National Laboratory"s Aerosol Wind Tunnel Research Facility using water vapor, oil vapor and dust as the scattering media. We measured the transmitted intensity as a function of the density of scatterers in the tunnel. We also performed bit error rate analysis of signals transmitted at the DS-3 data rate. The QCL link consistently showed a higher performance level when compared to the NIR links for water fog, oil fog and dust scattering.

© (2004) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Rainer Martini ; Chris Glazowski ; Edward A. Whittaker ; Warren W. Harper ; Yin-Fong Su, et al.
"Optical free-space communications at middle-infrared wavelengths", Proc. SPIE 5359, Quantum Sensing and Nanophotonic Devices, 196 (July 6, 2004); doi:10.1117/12.516517; http://dx.doi.org/10.1117/12.516517


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