All-optical differential detection for suppressing multiple-access interference in coherent time-addressed optical CDMA systems | Zendy

SunJong Kim | Zendy; Tae Young Kim | Zendy; Chul Soo Park | Zendy; ChangSoo Park | Zendy; Young Yun Chun | Zendy

Open Access

All-optical differential detection for suppressing multiple-access interference in coherent time-addressed optical CDMA systems

Author(s) -

SunJong Kim,

Tae Young Kim,

Chul Soo Park,

ChangSoo Park,

Young Yun Chun

Publication year - 2004

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/opex.12.001848

Subject(s) - interference (communication) , optics , differential (mechanical device) , code division multiple access , physics , optical communication , autocorrelation , computer science , signal (programming language) , electronic engineering , telecommunications , channel (broadcasting) , engineering , mathematics , statistics , thermodynamics , programming language

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.

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