Abstract
Optical demultiplexing from 160 Gbit/s to 10 Gbit/s in a single lumped,
electrically driven electroabsorption modulator (EAM) is experimentally presented.
A quantum-dash Fabry-Pèrot mode-locked-laser is used to sub-harmonically
extract a clock signal from the 160 Gbit/s data stream. A drive signal consisting
of a series of harmonics of the recovered clock signal enables error-free
demultiplexing of all channels in a 160 Gbit/s single-polarization optical
time division multiplexing (OTDM) signal. This technique is quasi-analytically
compared with the conventional approach of cascading two EAMs when performing
160 Gbit/s to 10 Gbit/s demultiplexing. The analysis reveals that using a
single, harmonically driven EAM can result in lower penalties with respect
to both degradations of the extinction ratio and width of pulses used in the
OTDM signal.
© 2011 IEEE
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