title: Multichannel wavelength conversion of 50-Gbit/s NRZ-DQPSK signals using a quantum-dot semiconductor optical amplifier.
abstract: We demonstrate simultaneous four-channel wavelength conversion of 50-Gbit/s non-return-to-zero differential quadrature-shift-keying signals with a channel spacing of 100-GHz using a quantum-dot semiconductor optical amplifier. Error-free operations with low-power penalties are successfully achieved with various channel configurations.
authors.affiliation: COBRA Research Institute, Eindhoven University of Technology, P. O. Box 513, Eindhoven, The Netherlands. m.matsuura@uec.ac.jp
authors.forename: Motoharu
authors.initials: M
authors.lastname: Matsuura
authors.forename: Nicola
authors.initials: N
authors.lastname: Calabretta
authors.forename: Oded
authors.initials: O
authors.lastname: Raz
authors.forename: Harm J S
authors.initials: HJ
authors.lastname: Dorren