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Tolerant-scheduling with channel switch latency consideration for hybrid WDM/TDM PON

Owing to the large capacity and flexible wavelength allocation, the hybrid Wavelength division multiplexing/time division multiplexing (WDM/TDM) passive optical networks (PON) is becoming a promising candidate for the next generation access network. However, the switch latency (SL) of tunable components deployed in hybrid WDM/TDM PON will constrain the network performance. In this paper, we propose a dynamic bandwidth allocation (DBA) algorithm in hybrid WDM/TDM PON with the consideration of SL. The simulation results show that the proposed scheme can significantly reduce or even eliminate the performance degeneration caused by SL.