Ultrafast-pulse self-phase modulation and thirdorder dispersion in Si photonic wire-waveguides

I. Wei Hsieh, Xiaogang Chen, Jerry I. Dadap, Nicolae C. Panoiu, Richard M. Osgood, Sharee J. McNab, Yurii A. Vlasov

Research output: Contribution to journalArticlepeer-review


By propagating femtosecond pulses inside submicron-cross-section Si photonic-wire waveguides with anomalous dispersion, we demonstrate that the pulse-propagation dynamics is strongly influenced by the combined action of optical nonlinearity and up to third-order dispersion with minimal carrier effects. Because of strong light confinement, a nonlinear phase shift of a few π due to self-phase modulation is observed at a pulse peak-power of just ∼250 mW. We also observe soliton-emitted radiation, fully supported by theoretical analysis, from which we determine directly the third-order dispersion coefficient, β3 = -0.73 ± 0.05 ps 3/m at 1537 nm.

Original languageEnglish (US)
Pages (from-to)12380-12387
Number of pages8
JournalOptics Express
Issue number25
StatePublished - Dec 11 2006
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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