title: High-bandwidth generation of duobinary and alternate-mark-inversion modulation formats using SOA-based signal processing.
abstract: We report on the novel all-optical generation of duobinary (DB) and alternate-mark-inversion (AMI) modulation formats at 42.6 Gb/s from an input on-off keyed signal. The modulation converter consists of two semiconductor optical amplifier (SOA)-based Mach-Zehnder interferometer gates. A detailed SOA model numerically confirms the operational principles and experimental data shows successful AMI and DB conversion at 42.6 Gb/s. We also predict that the operational bandwidth can be extended beyond 40 Gb/s by utilizing a new pattern-effect suppression scheme, and demonstrate dramatic reductions in patterning up to 160 Gb/s. We show an increasing trade-off between pattern-effect reduction and mean output power with increasing bitrate.
authors.affiliation: Tyndall National Institute & Department of Physics, University College Cork, Lee Maltings, Cork, Ireland. james.dailey@tyndall.ie
authors.forename: James M
authors.initials: JM
authors.lastname: Dailey
authors.forename: Mark J
authors.initials: MJ
authors.lastname: Power
authors.forename: Roderick P
authors.initials: RP
authors.lastname: Webb
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Manning
mesh_terms: D000669:Amplifiers, Electronic; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007368:Interferometry / Q000295:instrumentation*; D055096:Optical Devices; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D013685:Telecommunications / Q000295:instrumentation*