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Opt Express. 2011 Dec 12;19(26):B450-6. doi: 10.1364/OE.19.00B452.

Dual-drive LiNbO3 interferometric Mach-Zehnder architecture with extended linear regime for high peak-to-average OFDM-based communication systems.

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  • 1Nanophotonics Technology Centre, Universidad Polit√©cnica de Valencia, Camino de Vera s/n, 46022 Valencia, Spain. mmorant@ntc.upv.es

Abstract

A dual-drive LiNbO(3) architecture modulator with chirp management is proposed and developed offering SFDR > 25 dB in a 1.4 V bias excursion compared to only 0.5 V bias excursion in a conventional Mach-Zehnder electro-optical modulator (MZ-EOM). The architecture effectively extends the linear regime and enables the optical transmission of wireless systems employing orthogonal division multiplexing (OFDM) modulation such as ultra-wide band (UWB) which require high linearity over a broad frequency range due to their high peak-to-average power ratio (PARP). Radio-over-fiber UWB transmission in a passive optical network is experimentally demonstrated employing this technique, exhibiting an enhancement of 2.2 dB in EVM after 57 km SSMF when the dual-drive developed modulator is employed.

© 2011 Optical Society of America

PMID:
22274055
[PubMed]
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