Acousto-optic couplings in a phoXonic crystal slab L1 cavity

2nd International Conference on Mathematical Modeling in Physical Sciences 2013

物理学;数学

Gazalet, J.^1,2,3 ; Kastelik, J.C.^1,2,3

Univ Lille Nord de France, F-59000 Lille, France^1

UVHC, IEMN-DOAE, F-59313 Valenciennes, France^2

CNRS, UMR 8520, F-59650 Villeneuve d'Ascq, France^3

关键词: Air holes;    Coupling mechanism;    Crystal slab;    Elastic effects;    Moving boundaries;    Phononic Crystal;    Silicon slabs;    Square lattices;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/490/1/012175/pdf
DOI  :  10.1088/1742-6596/490/1/012175

来源: IOP

【 摘 要 】

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.