Controlling Rayleigh-Backscattering-Induced Distortion in Radio Over Fiber Systems for Radioastronomic Applications

Radio over Fiber (RoF) Systems exploiting a direct modulation of the laser source are presently utilized within important Radioastronomic scenarios. Due to the particular operating conditions of some of these realizations, the phenomena which typically generate nonlinearities in RoF links for teleco...

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Bibliographic Details
Published in:Journal of lightwave technology 2020-10, Vol.38 (19), p.5393-5405
Main Authors: Nanni, Jacopo, Giovannini, Andrea, Hadi, Muhammad Usman, Lenzi, Enrico, Rusticelli, Simone, Wayth, Randall, Perini, Federico, Monari, Jader, Tartarini, Giovanni
Format: Article
Language:English
Subjects:
Backscattering
Frequency modulation
Laser noise
Nonlinear optics
Nonlinearities
Optical fiber communication
Optical modulation
Optical receivers
Optical scattering
radioastronomy
rayleigh backscattering
RoF
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Summary:Radio over Fiber (RoF) Systems exploiting a direct modulation of the laser source are presently utilized within important Radioastronomic scenarios. Due to the particular operating conditions of some of these realizations, the phenomena which typically generate nonlinearities in RoF links for telecommunications applications can be here regarded as substantially harmless. However, these same operating conditions can make the RoF systems vulnerable to different kinds of nonlinear effects, related to the influence of the Rayleigh Backscattered signal on the transmitted one. A rigorous description of the phenomenon is performed, and an effective countermeasure to the problem is proposed and demonstrated, both theoretically and experimentally.
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2020.2993203