title: Reconfigurable photonic ultrawideband pulse generation from an optically injected semiconductor laser.
abstract: We demonstrate reconfigurable photonic ultrawideband (UWB) pulse generation by injecting a phase-modulated optical wave into a semiconductor laser. By adjusting the injection power level and phase modulation depth, the photonic UWB generator is capable of generating either a single-optical-carrier monocycle or power-efficient UWB pulses. A UWB pulse with spectral power efficiency (SPE) of 36.10% has been achieved by optimizing the injection parameters. Transmission in an 8.4 km single mode fiber results in a degradation of SPE to 27.55% without significant pulse distortion.
authors.affiliation: Department of Electronic Engineering and Center for Advanced Research in Photonics, The Chinese University of Hong Kong, Shatin, N. T., Hong Kong, China. xlfu@ee.cuhk.edu.hk
authors.forename: Xuelei
authors.initials: X
authors.lastname: Fu
authors.forename: Yongheng
authors.initials: Y
authors.lastname: Dai
authors.forename: Chester
authors.initials: C
authors.lastname: Shu