This work was supported by the National Natural Science Foundation of China (Nos. 61307087 and 61377079), the Hunan Provincial Natural Science Foundation of China (No. 12JJ3070), and the Funda- mental Research Funds for the Central Universities and Young Teachers Program of Hunan University.
We experimentally demonstrate the multiband orthogonal frequency-division multiplexing ultra-wideband (MB-OFDM UWB) over fiber system with direct detection. Different sub-carrier modulation formats (quadrature phas...