title: 10 GHz pulse source for 640 Gbit/s OTDM based on phase modulator and self-phase modulation.
abstract: We demonstrate a high-quality cavity-free 10 GHz 680 fs pulse source starting from a continuous wave (CW) laser. The pulse source is employed in a 640 Gbit/s on-off keying (OOK) OTDM data generation and demultiplexing experiment, where the error-free bit error rate (BER) performance confirms the high pulse quality. The pulse source is based on a linear pulse compression stage followed by two polarization-independent non-linear pulse compression stages. The linear pulse compression stage relies on a phase modulator, which is used to generate linear chirp and followed by a dispersive element to compensate the chirp. The non-linear pulse compression stages are based on self-phase modulation (SPM) in dispersion-flattened highly non-linear fibers (DF-HNLF). The pulse source is tunable over the C-band with negligible pedestal.
authors.affiliation: DTU Fotonik, Department of Photonics Engineering, Technical University of Denmark, Ørsteds Plads, Building 343, DK-2800 Kgs. Lyngby, Denmark. huhao@fotonik.dtu.dk
authors.forename: Hao
authors.initials: H
authors.lastname: Hu
authors.forename: Hans Christian Hansen
authors.initials: HC
authors.lastname: Mulvad
authors.forename: Christophe
authors.initials: C
authors.lastname: Peucheret
authors.forename: Michael
authors.initials: M
authors.lastname: Galili
authors.forename: Anders
authors.initials: A
authors.lastname: Clausen
authors.forename: Palle
authors.initials: P
authors.lastname: Jeppesen
authors.forename: Leif Katsuo
authors.initials: LK
authors.lastname: Oxenløwe