Abstract
A novel D-band vector signal generation and transmission scheme by using joint optical carrier suppression (OCS) and single sideband (SSB) modulation without a narrowband optical filter to remove the undesired optical sidebands is proposed and implemented. An intensity modulator operating on OCS mode is utilized to generate two carrier signals with a frequency spacing of 165.6-GHz. A lower sideband modulated RF vector signal at 20-GHz is used to modulate the push–pull modulator which working on OCS mode. Finally, two electrical millimeter vector signals with frequency 145.6-GHz and 185.6-GHz were generated by heterodyne beating on a photodetector. We experimentally demonstrated 2-Gbaud 16QAM, 4-Gbaud QPSK, and 10-Gbaud QPSK vector signals generation and transmission over 20 km standard single mode fiber and 1 m wireless link, respectively.
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