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Opt Express. 2005 Jan 24;13(2):371-6.

Performance comparison of optical 8-ary differential phase-shift keying systems with different electrical decision schemes.

Abstract

We examine the performance of optical 8-ary differential phase-shift keying transmission systems according to the type of receiver structure and modulation format. Compared with the approach based on a multilevel decision, we found that a bilevel receiver provides 3-dB gain in optical signal-to-noise ratio sensitivity and is more robust against chromatic dispersion for either nonreturn-to-zero or return-to-zero modulation.

PMID:
19488362
[PubMed]
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