Open AccessPhase-preserving amplitude regeneration for a WDM RZ-DPSK signal using a nonlinear amplifying loop mirror
Author(s) -
Kristian Cvecek,
K. Sponsel,
C. Stephan,
G. Onishchukov,
R. Ludwig,
C. Schubert,
Bernhard Schmauß,
Gerd Leuchs
Publication year - 2008
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.001923
Subject(s) - optics , wavelength division multiplexing , physics , phase (matter) , nonlinear system , loop (graph theory) , signal (programming language) , wavelength , amplitude , phase modulation , power (physics) , nonlinear optics , multiplexing , telecommunications , computer science , phase noise , mathematics , laser , combinatorics , quantum mechanics , programming language
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.