Abstract
Stimulated Brillouin Scattering (SBS) is an acousto-optic, resonant nonlinear process with various potential applications ranging from novel light sources [1] to high frequency signal processing in the context of microwave photonics [2]. Such applications greatly benefit from a miniaturization of the SBS-active optical waveguide and its integration on an optical chip [3]. Recently, completely or nearly suspended silicon nanowires were proposed [4] and experimentally investigated [5] as on-chip waveguides that exhibit extraordinarily high SBS-gain constants due to a strong radiation pressure on the material boundaries. Ref. [5] also mentions that the acoustic properties become somewhat sensitive to geometric fabrication imperfections, leading to an inhomogeneous broadening of the forwards SBS resonance line. In this work, we focus on a second mechanism for geometry-related resonance broadening that arises from the optical wave equation. It is irrelevant in forward SBS situations, but can easily become the dominant effect in backward SBS.
© 2015 IEEE
PDF ArticleMore Like This
V.I. Kovalev and R.G. Harrison
QThI6 International Quantum Electronics Conference (IQEC) 2000
Raphaël Van Laer, Bart Kuyken, Roel Baets, and Dries Van Thourhout
STh4I.4 CLEO: Science and Innovations (CLEO:S&I) 2015
Aram Lee, Peng Zhang, Sunghwan Jung, and Yong Xu
JTu5A.8 CLEO: Applications and Technology (CLEO:A&T) 2015