WDM–OTDM based spectral efficient hybrid multiplexing technique inherent with properties of bandwidth elasticity and scalability

In this paper a hybrid multiplexing technique has been presented that merges WDM and OTDM multiplexing technologies. The WDM–OTDM hybrid realizes wavelength parallel bus architecture and is inherent with features of high spectral efficiency, high scalability and bandwidth elasticity. Simulations and experiments were carried out to investigate the selection of most suitable modulation format, dispersion compensation technique and erbium doped fiber amplifier (EDFA) noise figure for WDM–OTDM hybrid, where link lengths exceeding 500 km at high Q-values was achieved.