title: Broad multiwavelength source with 50 GHz channel spacing for wavelength division multiplexing applications in the telecom C band.
abstract: We present a multiwavelength source with a spectral width of 42 nm at -20 dB. The frequency comb is generated by spectrally broadening the output of an amplified 50 GHz Er:Yb:glass laser with a highly nonlinear photonic crystal fiber. After spectral flattening the comb covers 37 channels with 5.4 mW average power per channel, and locking only one central wavelength channel to the International Telecommunication Union grid results in a maximum frequency error of 0.24% for all channels.
authors.affiliation: Department of Physics, Institute of Quantum Electronics, ETH Zurich, Wolfgang-Pauli-Strasse 16, Zurich, Switzerland. a.oehler@phys.ethz.ch
authors.forename: Andreas E H
authors.initials: AE
authors.lastname: Oehler
authors.forename: Simon C
authors.initials: SC
authors.lastname: Zeller
authors.forename: Kurt J
authors.initials: KJ
authors.lastname: Weingarten
authors.forename: Ursula
authors.initials: U
authors.lastname: Keller