On phaser-based processing of impulse radio UWB over fiber systems employing SOA

•Phaser-based processing is investigated for the first time for IR-UWB over fiber systems.•The influence of up-down chirping slopes is analyzed with a SOA as an inline amplifier.•The scheme requires no sampling of the UWB signal and thus enables low complexity implementation.•The proposed approach o...

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Bibliographic Details
Published in:Optical fiber technology 2017-07, Vol.36, p.33-40
Main Authors: Taki, H., Azou, S., Hamie, A., Al Housseini, A., Alaeddine, A., Sharaiha, A.
Format: Article
Language:English
Subjects:
Engineering Sciences
Signal and Image processing
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Summary:•Phaser-based processing is investigated for the first time for IR-UWB over fiber systems.•The influence of up-down chirping slopes is analyzed with a SOA as an inline amplifier.•The scheme requires no sampling of the UWB signal and thus enables low complexity implementation.•The proposed approach offers a better robustness against both ASE noise and nonlinearities.•The performance improvement in terms of both bit-error-rate and power efficiency is evaluated. In this study, we adopt a phaser-based processing to enhance the performance of impulse radio over fiber system utilizing SOA. The amplifier has been placed at a distance in the optical link, so as to extend the coverage area of proposed transceiver. Operating in the linear or saturation region for SOA, adds ASE noise or strong nonlinearities acting on the propagated pulses, respectively. Both lead to a degradation in the power efficiency and bit error rate performance. By applying up and down analog chirping technique, we have reduced the ASE power and nonlinearity simultaneously. Based on the 5th Gaussian pulse and Abraha’s combination of doublets, a significant improvement has been achieved at extremely low and high input powers entering the amplifier (
ISSN:1068-5200
1095-9912
DOI:10.1016/j.yofte.2017.02.001