Spontaneous Raman scattering in ultrasmall silicon waveguides

Jerry I. Dadap, Richard L. Espinola, Richard M. Osgood, Sharee J. McNab, Yurii A. Vlasov

Research output: Contribution to journalArticlepeer-review


We report spontaneous Raman scattering at 1550 nm in ultrasmall silicon-on-insulator (SOI) strip waveguides of 0.098-μm2 cross-sectional area. The submicrometer-scale dimensions provide tight optical confinement and, hence, highly efficient Raman scattering with milliwatt-level cw pump powers. The prospect of Raman amplification in such a deeply scaled-down waveguide device in the presence of various loss mechanisms, particularly free-carrier loss that arises from two-photon absorption, is discussed, and the feasibility of high-gain SOI-based fully integrated optical amplifiers is shown.

Original languageEnglish (US)
Pages (from-to)2755-2757
Number of pages3
JournalOptics Letters
Issue number23
StatePublished - Dec 1 2004
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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