Abstract
In fiber optical parametric amplifiers (OPAs), idlers are generated
during the amplification process. For very wide and dense signal input spectra,
idlers may overlap with signals, thereby interfering with proper operation
as an amplifier. In this paper, filter-based methods to fully utilize the
bandwidth of OPAs and wavelength converters in the presence of very broad
signal spectra are investigated. In the basic filter setup, two parallel OPAs
and two filters are used; alternatively, one can use a single OPA bidirectionally
and a single filter. An interleaver-based arrangement, separating signals
from idlers at the system output, with a crosstalk of below -20 dB and subdecibel bit-error-rate penalty, is experimentally
demonstrated.
© 2006 IEEE
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