Phase-preserving amplitude regeneration for a WDM RZ-DPSK signal using a nonlinear amplifying loop mirror.
We propose a modified nonlinear amplifying loop mirror (NALM) for phase-preserving 2R regeneration of wavelength division multiplexed (WDM) return-to-zero differential phase-shift-keyed signals. As proof of principle the regeneration capability of this NALM setup has been investigated experimentally for two 10 Gbit/s wavelength channels. A significant eye-opening improvement and a negative power penalty of 1.2 dB have been observed in both channels.
Institute of Optics Information and Photonics, Max-Planck Research Group, Universtiy Erlangen-Nuremberg, Guenther-Scharowsky-Str. 1, building 24, 91058 Erlangen, Germany. kcvecek@optik.uni-erlangen.de
K
K
Cvecek
K
K
Sponsel
C
C
Stephan
G
G
Onishchukov
R
R
Ludwig
C
C
Schubert
B
B
Schmauss
G
G
Leuchs
D000669:Amplifiers, Electronic; D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007909:Lenses; D008962:Models, Theoretical; D017711:Nonlinear Dynamics; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*