Observation of Brillouin scattering in a high-index doped silica chip waveguide

Abstract

We report the observation of Brillouin backscattering in a 50-cm long spiral high-index doped silica chip waveguide and measured a Brillouin frequency shift of 16 GHz which is in very good agreement with theoretical predictions and numerical simulations based on the elastodynamics equation. © 2023.

Keywords

• Integrated photonics
• Silicon photonics
• Brillouin scattering
• Nonlinear optics