6-channel photonic generation of ultra-wideband signals using multiple nonlinear characteristics in a parallel FOPA structure

Liang ZHAO, Junqiang SUN

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PDF(474 KB)
Front. Optoelectron. ›› 2011, Vol. 4 ›› Issue (4) : 448-453. DOI: 10.1007/s12200-011-0189-y
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6-channel photonic generation of ultra-wideband signals using multiple nonlinear characteristics in a parallel FOPA structure

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Abstract

We propose an approach to generating 6-channel polarity-inverted ultra-wideband (UWB) doublets by utilizing the parallel fiber-optical parametric amplifier (FOPA) configuration. The pulse-splitting effect in a highly nonlinear fiber (HNLF) is exploited to generate the double-overshoot and the double-undershoot, which are the basic components required to form a UWB pulse. Under the circumstances of different relative time advance/delays (RTADs) and different initial Gaussian pulse durations, the key parameters, including center frequency (Fc), 10-dB bandwidth (BW10dB) and fractional bandwidth (FBW) for a UWB doublet are systematically investigated, eventually proved in line with the U. S. Federal Communications Commission (FCC) regulation.

Keywords

ultra-wideband (UWB) / pulse-splitting / fiber-optical-parametric-amplifier (FOPA) / highly nonlinear fiber (HNLF)

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Liang ZHAO, Junqiang SUN. 6-channel photonic generation of ultra-wideband signals using multiple nonlinear characteristics in a parallel FOPA structure. Front Optoelec Chin, 2011, 4(4): 448‒453 https://doi.org/10.1007/s12200-011-0189-y

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Acknowledgement

This work was supported by the National Natural Science Foundation of China (Grant No. 60977044). The authors acknowledge the helpful discussions with Jing Shao, Jinqiang Zeng and Kang Tan in our team.

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2014 Higher Education Press and Springer-Verlag Berlin Heidelberg
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