active wavelength selective switch (WSS) incorporated with
a dynamic wavelength and bandwidth allocation (DWBA) in
order to improve the efficiency in bandwidth consumption of
the FTTx based on wavelength division multiplexed passive
optical network (WDM-PON). Under the control by DWBA,
appropriate numbers of coarse wavelength division
multiplexed (CWDM) wavelengths on different time intervals
are generated under the dynamic requests for different data
rates from different subscribers. The computer simulation
results, based on data rate of 10 Gbps per wavelength,
demonstrate the feasibility of the transmission of 160-Gbps
signal (16 CWDM wavelengths: 1271-1571 nm) to a single
subscriber over the maximum reaches of 55.2 km with FEC
(BER= 10-4), and 47.6 km without FEC (BER 10-9).