Abstract
In wavelength-division multiplexing (WDM) ethernet passive optical networks
(EPONs), to realize the statistical multiplexing of upstream wavelength resources,
some optical tunable components are introduced in the optical network units.
However, the switch latency (SL) of these tunable components constrains the
performance of WDM-EPON. In this letter, we extend the mathematical model of the WDM
interleaved polling with adaptive cycle time (IPACT) scheme by additionally
considering the SL conditions. We also investigate the effect of channel SL on
network performance. The simulation results show that the performance of
WDM-IPACT-SL deteriorates as the SL increases.
© 2011 Chinese Optics Letters
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