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http://dx.doi.org/10.3807/KJOP.2004.15.3.229

Reduction of multiple-access interference in coherent optical CDMA systems based on all-optical differential detection  

김선종 (광주과학기술원 정보통신공학과)
김태영 (광주과학기술원 정보통신공학)
박철수 (광주과학기술원 정보통신공학)
박창수 (광주과학기술원 정보통신공학과)
Publication Information
Korean Journal of Optics and Photonics / v.15, no.3, 2004 , pp. 229-233 More about this Journal
Abstract
We propose a novel scheme to suppress the multiple-access interference(MAI) in coherent optical CDMA systems. This is based on a differential detection using the dual-control NOLM. For an experimental demonstration, two encoded channels we 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 the NOLM is observed. Signal-to-interference ratio is improved by 7 ㏈.
Keywords
optical CDMA; nonlinear optical loop mirror; multiple-access interference;
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