Abstract
We theoretically investigate the performance limitations of subcarrier
multiplexed (SCM) wavelength-division-multiplexing (WDM) systems using optical
double-sideband (DSB) modulated, 16-quadrature amplitude-modulated (QAM) signals.
The performance limitations are investigated using crosstalk power and SCM
channel spacing for various transmission conditions, including impairment
factors such as dispersion and fiber nonlinearities for a single wavelength
channel first. The effects of WDM channel spacing on SCM systems with multiwavelength
channels are also evaluated via the calculated bit error rate (BER) performance,
based on the performance limitations found in the single-wavelength simulation.
This enables us to provide guidelines for the design of SCM/WDM systems for
fiber-to-the-home (FTTH) network in WDM–passive optical network (PON)
architecture, based on the performance limitations.
© 2009 IEEE
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