TY - GEN
T1 - Suppression of optical beat interference in WDM-SCMA networks using modulated optical combs
AU - Jung, Hyun Do
AU - Won, Yong Yuk
AU - Han, Sang Kook
PY - 2005
Y1 - 2005
N2 - We proposed a new method to suppress the optical beat interference (OBI) in WDM/SCMA network. The proposed scheme uses the modulated optical combs. Since short optical pulse in time domain has broad linewidth in frequency domain, the generated OBI noise by beating of optical comb signals from several optical network unit(ONU)s spreads over wide frequency range. In addition, the chance of optical beating is low because optical pulse trains from different ONU have different pulse timing. We have demonstrated the proposed idea experimentally. In beating experiment, CNR was maintained over 20dBc despite of optical beating. In addition, optical comb modulation scheme showed 4dB enhancement of the power penalty in BER measurement compared with the generally used direct modulation case in presence of OBI noise.
AB - We proposed a new method to suppress the optical beat interference (OBI) in WDM/SCMA network. The proposed scheme uses the modulated optical combs. Since short optical pulse in time domain has broad linewidth in frequency domain, the generated OBI noise by beating of optical comb signals from several optical network unit(ONU)s spreads over wide frequency range. In addition, the chance of optical beating is low because optical pulse trains from different ONU have different pulse timing. We have demonstrated the proposed idea experimentally. In beating experiment, CNR was maintained over 20dBc despite of optical beating. In addition, optical comb modulation scheme showed 4dB enhancement of the power penalty in BER measurement compared with the generally used direct modulation case in presence of OBI noise.
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U2 - 10.1109/MWSYM.2005.1517169
DO - 10.1109/MWSYM.2005.1517169
M3 - Conference contribution
AN - SCOPUS:33749239832
SN - 0780388461
SN - 9780780388468
T3 - IEEE MTT-S International Microwave Symposium Digest
SP - 2131
EP - 2133
BT - 2005 IEEE MTT-S International Microwave Symposium Digest
T2 - 2005 IEEE MTT-S International Microwave Symposium
Y2 - 12 June 2005 through 17 June 2005
ER -