Phase-controlled supermodes in symmetric photonic molecules

A photonic molecule (PM) is a miniature diffractive optical structure composed of resonance microcavi-ties called atoms (e.g., cylinders or spheres) supporting a set of high-quality eigenmodes. All atoms in a PM are coupled by the electromagnetic fields of eigenmodes, which form collective supermodes of the whole PM. We consider a particular type of mirror-symmetric PMs being optically excited simultaneously via two light channels (tapered fibers). Based on the numerical simulations, we show that the spectral composition of supermodes in such PM can be effectively manipulated by changing the phase detuning between the optical channels. For a seven-atom silicon microcylinder cyclic-PM is demonstrated the pos-sibility to achieve tenfold intensity amplification/suppression of several supermodes from the Stokes and anti-Stokes bands of PM spectrum.(c) 2023 Published by Elsevier Ltd.

Automated summary

A photonic molecule (PM) is a diffractive optical structure made up of resonance microcavities called atoms. By manipulating the phase detuning between optical channels, the spectral composition of supermodes in a mirror-symmetric PM can be effectively controlled. Numerical simulations demonstrate the possibility of achieving tenfold intensity amplification/suppression of several supermodes from the Stokes and anti-Stokes bands of PM spectrum.