Title :
All-optical clock recovery from 40 Gbit/s NRZ signal based on clock line enhancement and sharp periodic filtering
Author :
Contestabile, G. ; Presi, M. ; Calabretta, N. ; Ciaramella, E.
Author_Institution :
Scuola Superiore Sant´´ Anna, Pisa, Italy
Abstract :
40 GHz clock extraction from a common 40 Gbit/s NRZ signal is experimentally demonstrated. First, a nonlinear optical preprocessor is exploited and then a semiconductor-assisted Fabry-Perot filter is used for clock extraction. The good performance and stability of the recovered 40 GHz clock signal is confirmed when it is used in a 40 Gbit/s back-to-back bit error ratio measurement.
Keywords :
amplitude modulation; binary sequences; error statistics; filtering theory; nonlinear optics; synchronisation; timing jitter; 40 GHz; 40 Gbit/s; NRZ signal; back-back bit error ratio measurement; clock extraction; clock line enhancement; nonlinear optical preprocessor; optical clock recovery; semiconductor-assisted Fabry-Perot filter; sharp periodic filtering;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20046504
