Generation of direct-detection optical OFDM signal for radio-over-fiber link using frequency doubling scheme with carrier suppression

Abstract

This investigation demonstrates the generation of OFDM-RoF signal using frequency doubling. Benchmarked against the OOK format, the 4-Gb/s, 16-QAM OFDM format has four times the higher spectral efficiency with a sensitivity penalty of under 2.6-dB. (c) 2007 Optical Society of America.