UWB Pulses Generation with Fano Resonance Modulation

We report an integrated method for generating ultra-wideband (UWB) monocycle and doublet pulses based on a reconfigurable silicon microring-coupled Mach-Zehnder interferometer (RC-MZI). When tuned to proper operating conditions, the device can produce Fano resonances with an extinction ratio of more than 20 dB. UWB monocycle and doublet signals with nanosecond pulse widths are produced when the microring resonator is modulated by square and Gaussian electrical pulses.