Title :
Enhanced reflection tolerance in WDM-PON by chirped RZ modulation
Author :
Banchi, L. ; Corsini, R. ; Presi, M. ; Cavaliere, Fabio ; Ciaramella, E.
Author_Institution :
CEICCP, Scuola Superiore Sant-Anna, Pisa, Italy
fDate :
7/1/2010 12:00:00 AM
Abstract :
In a central light seeded PON, it is shown that the resilience to the Rayleigh backscattering can be strongly different for NRZ or RZ-direct modulated R-SOAs at the OLT. It is experimentally demonstrated that the RZ modulated signal has an increased tolerance to the in-band crosstalk compared to NRZ format, thanks to the spurious chirp. Error-free uplink communications down to 10 dB signal-to-crosstalk level are obtained.
Keywords :
optical crosstalk; optical fibre networks; optical modulation; semiconductor optical amplifiers; wavelength division multiplexing; NRZ direct modulated R-SOA; RZ modulated signal; Rayleigh backscattering; WDM-PON; in-band crosstalk; optical line terminal; passive optical networks; reflection tolerance enhancement; reflective semiconductor optical amplifiers;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2010.1443
