title: 80 Gb/s wavelength conversion using a quantum-dot semiconductor optical amplifier and optical filtering.
abstract: Wavelength conversion of 40 Gb/s and 80 Gb/s return-to-zero on-off-keying signals using a quantum-dot semiconductor optical amplifier in combination with a delay interferometer as subsequent filter is demonstrated. The performance of the 80 Gb/s wavelength converter measured in terms of the bit-error ratio demonstrated here is the highest reported up to now for quantum-dot semiconductor optical amplifiers. The typical fast gain dynamics manifests itself in open eye diagrams of the converted signal. The slow phase dynamics of the carrier reservoir however induces severe patterning and requires compensation. Adaptation of the free-spectral range of the delay interferometer is necessary in order to mitigate these phase effects and to achieve error-free wavelength conversion.
authors: Institut für Festkörperphysik, Technische Universität Berlin, EW 5-2, Hardenbergstr. 36, 10623 Berlin, Germany. chmeuer@sol.physik.tu-berlin.de
authors: Christian
authors: C
authors: Meuer
authors: Carsten
authors: C
authors: Schmidt-Langhorst
authors: René
authors: R
authors: Bonk
authors: Holger
authors: H
authors: Schmeckebier
authors: Dejan
authors: D
authors: Arsenijević
authors: Gerrit
authors: G
authors: Fiol
authors: Andrey
authors: A
authors: Galperin
authors: Juerg
authors: J
authors: Leuthold
authors: Colja
authors: C
authors: Schubert
authors: Dieter
authors: D
authors: Bimberg