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

  title={Controlling Rayleigh-Backscattering-Induced Distortion in Radio Over Fiber Systems for Radioastronomic Applications},
  author={Jacopo Nanni and Andrea Giovannini and Muhammad Usman Hadi and Enrico Lenzi and Simone Rusticelli and Randall B. Wayth and Federico Perini and Jader Monari and Giovanni Tartarini},
  journal={Journal of Lightwave Technology},
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… 
Optimal Dithering Configuration Mitigating Rayleigh-Backscattering-Induced Distortion in Radioastronomic Optical Fiber Systems
—In the context of Radioastronomic applications where the Analog Radio-over-Fiber technology is used for the antenna downlink, detrimental nonlinearity effects arise because of the interference
Radio frequency over fiber technology for SKA-low receiver
Abstract. The signal reception chain is an essential element for achieving the square kilometer array-low (SKA-low) system requirements in terms of high sensitivity and dynamic range. The balance
Experimental Evaluation of Hybrid Fibre–Wireless System for 5G Networks
This article describes a novel experimental study considering a multiband fibre–wireless system for constructing the transport network for fifth-generation (5G) networks. This study describes the
Practical Demonstration of 5G NR Transport Over-Fiber System with Convolutional Neural Network
This study describes an experimental realization using digital predistortion (DPD) for a fifth generation (5G) multiband new radio (NR) optical front haul (OFH) based Radio over Fiber (RoF) link. For
Engineering Development Array 2: design, performance, and lessons from an SKA-Low prototype station
Abstract. We present the Engineering Development Array 2, which is one of two instruments built as a second generation prototype station for the future Square Kilometre Low-Frequency Array. The array


Optimum Mitigation of distortion induced by Rayleigh Backscattering in Radio-over-Fiber links for the Square Kilometer Array Radio-Telescope
This paper presents the theoretical and experimental study of unexpected distortions induced by the Rayleigh backscattering phenomenon in Radio-over-Fiber (RoF) links within the Square Kilometer
Challenges Due to Rayleigh Backscattering in Radio over Fibre Links for the Square Kilometre Array Radio-Telescope
The present works highlights the physical origin of such undesired spurious frequencies generation, which can be also found in other applicative telecommunications scenarios.
Distortion Mechanisms Originating From Modal Noise in Radio Over Multimode Fiber Links
Harmonic and intermodulation distortion contributions generated by modal noise in radio over multimode fiber (RoMMF) systems for in-building wireless coverage are reviewed. The role played by the
A Radio-Frequency-over-Fiber link for large-array radio astronomy applications
A prototype 425-850 MHz Radio-Frequency-over-Fiber (RFoF) link for the Canadian Hydrogen Intensity Mapping Experiment (CHIME) is presented. The design is based on a directly modulated Fabry-Perot
Rayleigh Scattering Reduction by Means of Optical Frequency Dithering in Passive Optical Networks With Remotely Seeded ONUs
With the purpose of reducing the crosstalk caused by Rayleigh scattering in bidirectional centralized light systems, we propose and experimentally demonstrate an optical frequency modulation to
Direct digital predistortion technique for the compensation of laser chirp and fiber dispersion in long haul radio over fiber links
An efficient predistortion technique is proposed, which can be applied to reduce the impairments of A-RoF systems due to the combined effects of frequency chirp of the laser source and chromatic dispersion of the optical channel.
Degradation of modulation and noise characteristics of semiconductor lasers after propagation in optical fiber due to a phase shift induced by stimulated Brillouin scattering
Here we demonstrate theoretically that stimulated Brillouin scattering (SBS) can induce a phase shift of the optical carrier relative to its sidebands due to the waveguiding effect of the optical
Analog Optical RF-Links for Large Radio Telescopes
  • J. Weiss
  • Physics
    2018 IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium (BCICTS)
  • 2018
This work presents how with analog optical links these requirements can be met, specifically for the low-frequency receiver of the Square Kilometre Array (SKA), which will be the world's largest radio telescope when finished.
Investigations of Backscattering Effects in Optical Fibers and Their Influences on the Link Monitoring
In this paper, first, we employed the coupled-mode theory to investigate the backscattering power characteristics of Rayleigh backscattering (RB) and stimulated Brillouin scattering (SBS) both
Feedback effects in a laser diode due to Rayleigh backscattering from an optical fibre
Feedback effects in a laser diode due to Rayleigh back-scattering in a 50 m fibre with or without end reflections are reported. Linewidth reduction by more than 200 and wavelength instability on a