A 100-GHz optical pulse train is generated using an InP-based optical
multiplexer, This device is based on a waveguide array with five paths
of different lengths separated by a 10-ps propagation time, We used a
multimode interference (MMI) splitter at the input and a taper-type c
ombiner at the output, This device is well-suited for optical time-div
ision multiplexing (OTDM) applications.