Transmission of 1.25-Gb/s quasi-single-sideband optical UWB signals over single-mode fiber

Abstract

We propose and demonstrate a simple and novel method to generate a quasi-single-sideband (QSSB) optical ultra-wideband (UWB) signal using a dual-drive Mach-Zehnder modulator. To evaluate the transmission performance of the generated QSSB UWB signal, an analytical model is developed with the evolution of the waveforms and the spectra with the transmission distance studied. The theoretical analysis is verified by an experiment. Eye diagrams, electrical spectra and bit-error rate measurement show that the proposed system has a good tolerance to the chromatic dispersion (CD) of single mode fiber (SMF).