This work has proposed and compared several millimeter wave (mmWave) radio-over-fiber (RoF) frequency multiplexing techniques based on InAs/InP quantum dash (QD) mode locked laser (MLL). QD-MLL is capable of generating tens of highly coherent optical carriers simultaneously with same frequency difference. After heterodyne detection, the RF phase noise of QD-MLL can be as low as 15kHz. In this paper, four different RoF based mmWave frequency multiplexing architecture is proposed and compared in experimentation. The EVM of two 2GBaud/s 16-QAM mmWave signal can be as low as 7.1% after demultiplexing in the experimentation.
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