Open AccessIn-band crosstalk penalties in optical networks with narrow optical and electric filtering
Author(s) -
R. Meleiro,
Joana Castro,
Daniel Fonseca,
Paulo S. André,
Paulo P. Monteiro
Publication year - 2009
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.17.004605
Subject(s) - crosstalk , optics , optical filter , computation , optical communication , wavelength division multiplexing , physics , optical performance monitoring , interference (communication) , computer science , signal processing , telecommunications , algorithm , wavelength , channel (broadcasting) , radar
Optical cross-connects (OXC) introduce crosstalk and intersymbolic interference due to filtering in the optical signal. We show experimentally and by simulation that higher optical signal-to-noise ratio (OSNR) penalties are obtained for the combined effect of both impairments compared to the sum of the penalties taken independently. Furthermore, the Modified Chernoff Bound is applied for performance estimation, with good accuracy and fast computation time. By using the correct OSNR penalty, the maximum number of cascaded OXC is reduced by 17% relatively to when the penalties are considered separately, for a 2 dB maximum penalty.