Abstract
Brillouin scattering occurs due to the interaction of optical and mechanical waves and it leads to the inelastic scattering of pump photons to Doppler red-shifted (Stokes) or blue-shifted (anti-Stokes) photons. The Brillouin scattering process is characterized by short-wavelength mechanical modes that can scatter light with a frequency shift of tens of GHz. In optical waveguides and micr…