title: Impulse radio ultrawideband pulse shaper based on a programmable photonic chip frequency discriminator.
abstract: We report and experimentally demonstrate the generation of impulse radio ultrawideband (UWB) pulses using a photonic chip frequency discriminator. The discriminator consists of three add-drop optical ring resonators (ORRs) which are fully programmable using thermo-optical tuning. This discriminator chip in combination with a phase modulator forms a temporal differentiator where phase modulation is converted to intensity modulation (PM-IM conversion). By means of tailoring the discriminator response using either the individual or the cascade of drop and through responses of the ORRs, first-order or second-order temporal differentiations are obtained. Using this principle, the generation of UWB monocycle, doublet and modified doublet pulses are demonstrated. The use of this CMOS-compatible discriminator is promising for the realization of a compact and low cost UWB transmitter.
authors.affiliation: Telecommunication Engineering group, University of Twente, Enschede, the Netherlands. d.a.i.marpaung@ewi.utwente.nl
authors.forename: David
authors.initials: D
authors.lastname: Marpaung
authors.forename: Ludovic
authors.initials: L
authors.lastname: Chevalier
authors.forename: Maurizio
authors.initials: M
authors.lastname: Burla
authors.forename: Chris
authors.initials: C
authors.lastname: Roeloffzen
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D055096:Optical Devices; D011846:Radio Waves; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D013685:Telecommunications / Q000295:instrumentation*