We propose and experimentally demonstrate a novel method for generating ultra-wideband (UWB) monocycle pulse by
exploiting a turbo-switch which consists of two reflective semiconductor optical amplifiers (RSOAs). By adjusting the
currents applied to both RSOAs, the monocycle pulse is realized due to the gain overshoot induced by the turbo-switch.
The polarity inversed monocycle pairs and the UWB doublet pulse train are numerically realized by cascading turboswitches.