Observation of Brillouin scattering in a high-index doped silica chip waveguide
arXiv:2305.11502
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.
5 pages, 6 figures