New progress of mm-wave radio-over-fiber system based on OFM

Abstract

This paper presents an overview on new progresses of millimeter wave (mm-wave) radio-over-fiber (RoF) system based on mm-wave generation by optical frequency multiplication (OFM), including generation of high-order optical side modes by optical modulation using dual-drive Mach-Zehnder modulator (DD-MZM) and enhancement of high-order optical side mode induced by selective amplification due to stimulated Brillouin scattering (SBS). The paper describes OFM by using DD-MZM in principle and verifies it in an experimental bidirectional 40 GHz RoF system. SBS amplification enhances the generated information-bearing mm-wave in downlink and also helps in producing a pure reference mm-wave for radio frequency-intermediate frequency (RF-IF) down-conversion in uplink. These efforts pushed the OFM technology of mm-RoF systems to achieve more and more feasibility and cost-effectiveness.

Keywords

networks / optical communications / radio-over-fiber (RoF) system / optical frequency multiplication (OFM) / Mach-Zehnder modulator (MZM) / self-heterodyne / stimulated Brillouin scattering (SBS) / free spectrum range (FSR) / millimeter wave (mm-wave)

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Acknowledgements

This work was support by the National Natural Science Foundation of China (Grant No. 60377024) and the Shanghai Leading Academic Discipline Project (No. T0102).

RIGHTS & PERMISSIONS

2014 Higher Education Press and Springer-Verlag Berlin Heidelberg