Experimental Comparison of Terahertz and Infrared Signaling in Controlled Atmospheric Turbulence

In order to study and compare propagation features of Terahertz (THz) and infrared (IR) links under different air turbulence conditions, THz and IR free- space communication links at 625 GHz carrier frequency and 1550 nm wavelength, respectively, with a maximum data rate of 2.5 Gb/s have been develo...

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Veröffentlicht in:	Journal of infrared, millimeter and terahertz waves millimeter and terahertz waves, 2015-02, Vol.36 (2), p.130-143
Hauptverfasser:	Ma, Jianjun, Moeller, Lothar, Federici, John F.
Format:	Artikel
Sprache:	eng
Schlagworte:	Aerodynamics Atmospheric turbulence Attenuation Carrier frequencies Channels Classical Electrodynamics Computational fluid dynamics Computer simulation Electrical Engineering Electronics and Microelectronics Engineering Error analysis Fluid flow Infrared Infrared radiation Instrumentation Links Perturbation Space communication Turbulence Turbulent flow
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Beschreibung
Zusammenfassung:	In order to study and compare propagation features of Terahertz (THz) and infrared (IR) links under different air turbulence conditions, THz and IR free- space communication links at 625 GHz carrier frequency and 1550 nm wavelength, respectively, with a maximum data rate of 2.5 Gb/s have been developed. After propagating through the same channel perturbation caused by air turbulence, attenuation of the channels due to scintillation effects is analyzed by measuring the power and bit-error-rates in each link. Attenuation caused by air turbulence degrades the IR channel but exhibits only minor impact on the THz signal. Numerical simulations of the IR and THz attenuation under different turbulence conditions are presented and compared with the experimental data.
ISSN:	1866-6892 1866-6906
DOI:	10.1007/s10762-014-0121-9