Impact of fiber chromatic dispersion on the BER performance of an optical CDMA IM/DD transmission system

A theoretical analysis is presented to evaluate the impact of fiber chromatic dispersion on the bit-error-rate (BER) performance of a direct sequence optical code-division multiple-access (OCDMA) system with intensity modulation direct detection transmission link using sequence inverse keying optica...

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Veröffentlicht in:	IEEE photonics technology letters 2005-06, Vol.17 (6), p.1340-1342
Hauptverfasser:	Majumder, S.P., Azhari, A., Abbou, F.M.
Format:	Artikel
Sprache:	eng
Schlagworte:	Bit error rate Chromatic dispersion Correlators Dispersions Fiber chromatic dispersion Gold gold sequence Intensity modulation intensity modulation direct detection (IM/DD) Inverse Links m-sequence Modulation Multiaccess communication Noise levels optical code-division multiple-access (OCDMA) Optical correlators Optical fibers Optical modulation Optical receivers Optical transmitters Performance analysis sequence inverse keying (SIK)
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Beschreibung
Zusammenfassung:	A theoretical analysis is presented to evaluate the impact of fiber chromatic dispersion on the bit-error-rate (BER) performance of a direct sequence optical code-division multiple-access (OCDMA) system with intensity modulation direct detection transmission link using sequence inverse keying optical correlator operating at 10 Gchip/s. The numerical results show that the system suffers a power penalty of 3.48 dB corresponding to chromatic dispersion index, /spl gamma/=0.3 for seven-chip m-sequence, at a BER of 10/sup -9/. It is further noticed that the number of simultaneous users are limited to 14 for /spl gamma/=0.1 and 10 for /spl gamma/=0.3, for 31-chip gold sequence, at 6-dB power penalty.
ISSN:	1041-1135 1941-0174
DOI:	10.1109/LPT.2005.846924