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Titolo:
Reduction of interchannel interference noise in a two-channel grating-based OCDMA system using a nonlinear optical loop mirror
Autore:
Lee, JH; Teh, PC; Petropoulos, P; Ibsen, M; Richardson, DJ;
Indirizzi:
Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, England Univ Southampton Southampton Hants England SO17 1BJ 7 1BJ, Hants, England
Titolo Testata:
IEEE PHOTONICS TECHNOLOGY LETTERS
fascicolo: 5, volume: 13, anno: 2001,
pagine: 529 - 531
SICI:
1041-1135(200105)13:5<529:ROIINI>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Keywords:
gratings; optical fiber communication; optical fiber devices; optical signal processing; optical switching;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
6
Recensione:
Indirizzi per estratti:
Indirizzo: Lee, JH Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, England Univ Southampton Southampton Hants England SO17 1BJ ants, England
Citazione:
J.H. Lee et al., "Reduction of interchannel interference noise in a two-channel grating-based OCDMA system using a nonlinear optical loop mirror", IEEE PHOTON, 13(5), 2001, pp. 529-531

Abstract

We show that a nonlinear optical switch can be used to suppress the interchannel noise generated under multiuser operation within a coherent, direct-sequence optical code-division multiple-access (OCDMA) system. By incorporating a simple nonlinear optical loop mirror (NOLM) within the receiver, we demonstrate a 3.6-dB power penalty reduction in a two-channel 1.25-Gb/s 64-chip 160-Gchip/s grating-based direct-sequence OCDMA system. Even greater improvements in system performance were obtained at a data rate of 2.5 Gb/s,where the noise due to the overlap of adjacent decoded data bits also needs to be suppressed. In both instances, the system performance under two-channel operation with nonlinear filtering was shown to be comparable to that achieved under single-channel operation using the conventional matched-filter approach.

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Documento generato il 29/09/20 alle ore 21:39:09