All-optical differential detection for suppressing multiple-access interference in coherent time-addressed optical CDMA systems.
A novel scheme for suppressing the multiple-access interference (MAI) in coherent time-addressed optical CDMA systems is proposed. This is based on a differential detection using the dual-control NOLM. The basic principle for MAI suppression is described. For experimental demonstration, two encoded channels are constructed and decoded. These decoded signals are sent to the dual-control NOLM and a high autocorrelation peak with suppressed MAI at the output of NOLM is observed. Signal-to-interference ratio is improved by 7 dB.
Kim
Sun-Jong
SJ
Kim
Tae-Young
TY
Park
Chul
C
Park
Chang-Soo
CS
Chun
Young
Y