Sasan Zhalehpour
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View article: High speed optical communications in silicon photonics modulators
High speed optical communications in silicon photonics modulators Open
Les communications optiques basées sur la photonique sur silicium (SiP) sont au centre des récents efforts de recherche pour le développement des futures technologies de réseaux optiques à haut débit. Dans cette thèse, nous étudions le tra…
View article: Reduced-size lookup tables enabling higher-order QAM with all-silicon IQ modulators
Reduced-size lookup tables enabling higher-order QAM with all-silicon IQ modulators Open
We experimentally demonstrate 20 Gbaud 256QAM and 40 Gbaud 128QAM in an all-silicon IQ modulator. We combine a linear equalizer and a nonlinear predistortion implemented in a lookup table (LUT). We achieve bit error rate (BER) below the 20…
View article: Mitigating pattern dependent nonlinearity in SiP IQ-modulators via iterative learning control predistortion
Mitigating pattern dependent nonlinearity in SiP IQ-modulators via iterative learning control predistortion Open
Silicon based Mach Zehnder modulators, unlike lithium niobate, suffer from nonlinear pattern-dependent behavior beyond simple intersymbol interference. We experimentally demonstrate a novel predistortion method based on the iterative learn…