Dailey JM, Power MJ, Webb RP, Manning RJ. High-bandwidth generation of duobinary and alternate-mark-inversion modulation formats using SOA-based signal processing.
OPTICS EXPRESS 2011;
19:25954-25968. [PMID:
22274184 DOI:
10.1364/oe.19.025954]
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Abstract
We report on the novel all-optical generation of duobinary (DB) and alternate-mark-inversion (AMI) modulation formats at 42.6 Gb/s from an input on-off keyed signal. The modulation converter consists of two semiconductor optical amplifier (SOA)-based Mach-Zehnder interferometer gates. A detailed SOA model numerically confirms the operational principles and experimental data shows successful AMI and DB conversion at 42.6 Gb/s. We also predict that the operational bandwidth can be extended beyond 40 Gb/s by utilizing a new pattern-effect suppression scheme, and demonstrate dramatic reductions in patterning up to 160 Gb/s. We show an increasing trade-off between pattern-effect reduction and mean output power with increasing bitrate.
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