Acousto-optic couplings in a phoXonic crystal slab L1 cavity

Samuel Dupont (1) , Quentin Rolland , Joseph Gazalet (1) , Jean-Claude Kastelik (1)

1 IEMN - Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520

Acousto-optic coupling mechanisms within simultaneous photonic and phononic crystal cavities are theoretically studied. The structure considered is a silicon slab drilled periodically with air holes arranged on a square lattice; the cavity is obtained by removing one hole from the ideal crystal structure. Two acousto-optic coupling mechanisms are taken into account: the classical photo-elastic effect and the opto-mechanic effect which arises from the moving boundaries. The coupling mechanisms are computed according to the finite element method. The results reveal that the mechanisms can sustain each other or act with counteracted effects.

Domaines: Physique [physics]

Samuel Dupont, Quentin Rolland, Joseph Gazalet, Jean-Claude Kastelik. Acousto-optic couplings in a phoXonic crystal slab L1 cavity. Journal of Physics: Conference Series, 2014, 490, 012175, 4 p. ⟨10.1088/1742-6596/490/1/012175⟩. ⟨hal-00961478⟩