2008
DOI: 10.1109/lpt.2008.918897
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OSNR Penalty Imposed by Linear In-Band Crosstalk Caused by Interburst Residual Power in Multipoint-To-Point Networks

Abstract: Abstract-We present an analysis of linear in-band crosstalk in high split long reach wavelength/time-division-multiplexing passive optical networks (WDM-TDM PONs). In this letter, a mathematical model is deducted for the first time to calculate optical signal-to-noise ratio penalties due to in-band crosstalk in multipoint-to-point networks. The network performance can be perturbed by in-band crosstalk caused by power leakages from burst-mode optical network units (ONUs) in OFF-state. Our study results show tha… Show more

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Cited by 13 publications
(2 citation statements)
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“…The seed wavelength at 1558 nm was split and modulated at each ONU by an electroabsorption modulator (EAM). A semiconductor optical amplifier (SOA) was used as optical gate to suppress, by more than 40 dB, light emission during the TDM off-state of the ONU, which would cause crosstalk to other ONUs [5]. In principle this SOA can be avoided in case of having a strong enough laser diode, by simply gating the optical light source itself.…”
Section: High Bit-rate Tdm-pon With Low Drive 4-pammentioning
confidence: 99%
“…The seed wavelength at 1558 nm was split and modulated at each ONU by an electroabsorption modulator (EAM). A semiconductor optical amplifier (SOA) was used as optical gate to suppress, by more than 40 dB, light emission during the TDM off-state of the ONU, which would cause crosstalk to other ONUs [5]. In principle this SOA can be avoided in case of having a strong enough laser diode, by simply gating the optical light source itself.…”
Section: High Bit-rate Tdm-pon With Low Drive 4-pammentioning
confidence: 99%
“…Together with a booster SOA this allows to launch a powerful upstream signal from the ONU, which does not suffer from OSNR degradation due to modulation of an already noisy optical carrier as in the previous scenario. However, a degradation can be given for high splitting ratios if the passthrough loss of the SOA is not high enough in its off-state since residual power from the EMLs across the tree will then cause crosstalk [222].…”
Section: Scenario 2: Onu Based On Gated Emlmentioning
confidence: 99%