André L. C. Aguiar, Indayara Bertoldi B. Martins, Felipe Rudge Barbosa
https://www.spiedigitallibrary.org/journals/Optical-Engineering/volume-59/issue-6/066104/Effects-of-all-optical-wavelength-conversion-on-signal-quality-under/10.1117/1.OE.59.6.066104.short
All-optical wavelength converters (AOWCs) based on
parametric amplification in highly nonlinear fibers are investigated and
evaluated, aiming at application flex-grid optical networks. A multichannel
transmission system with a multilevel modulation format at 56-Gb / s bit rate
is adopted. Parameters such as symbol error rate and signal bandwidth
allocation are evaluated considering the optical signal-to-noise ratio, the
power reception level, the channel spacing, and the impact of several cascade
conversions—series of multiple AOWCs—on the signal quality. This work was
carried out with an analytical modeling and computer simulations. Results
reveal consistent modeling and adequate operation of the proposed AOWCs for
flex-grid wavelength-division multiplexing networks and indicate that the
number of conversions is limited by the size of the converter operating band
and the allowed flex-grid slot size.
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