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Proceedings Article

Free-space optical communication using mid-infrared or solar-blind ultraviolet sources and detectors

[+] Author Affiliations
Ryan McClintock, Abbas Haddadi, Manijeh Razeghi

Northwestern Univ. (USA)

Proc. SPIE 8268, Quantum Sensing and Nanophotonic Devices IX, 826810 (January 20, 2012); doi:10.1117/12.913980
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From Conference Volume 8268

  • Quantum Sensing and Nanophotonic Devices IX
  • Manijeh Razeghi; Eric Tournie; Gail J. Brown
  • San Francisco, California, USA | January 21, 2012

abstract

Free-space optical communication is a promising solution to the "last mile" bottleneck of data networks. Conventional near infrared-based free-space optical communication systems suffer from atmospheric scattering losses and scintillation effects which limit the performance of the data links. Using mid-infrared, we reduce the scattering and thus can improve the quality of the data links and increase their range. Because of the low scattering, the data link cannot be intercepted without a complete or partial loss in power detected by the receiver. This type of communications provides ultra-high bandwidth and highly secure data transfer for both short and medium range data links. Quantum cascade lasers are one of the most promising sources for mid-wavelength infrared sources and Type-II superlattice photodetectors are strong candidates for detection in this regime. The same way that that low scattering makes mid-wavelength infrared ideal for secure free space communications, high scattering can be used for secure short-range free-space optical communications. In the solar-blind ultraviolet (< 280 nm) light is strongly scattered and absorbed. This scattering makes possible non-line-of-sight free-space optical communications. The scattering and absorption also prevent remote eavesdropping. III-Nitride based LEDs and photodetectors are ideal for non-line-of-sight free-space optical communication.

© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation

Ryan McClintock ; Abbas Haddadi and Manijeh Razeghi
"Free-space optical communication using mid-infrared or solar-blind ultraviolet sources and detectors", Proc. SPIE 8268, Quantum Sensing and Nanophotonic Devices IX, 826810 (January 20, 2012); doi:10.1117/12.913980; http://dx.doi.org/10.1117/12.913980


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