Coaxial Micro Ring Arrays Fabricated on Self-Assembled Microtube Cavities for Resonant Light Modulation

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

  • Christian N. Saggau - , Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden, Technische Universität Chemnitz (Autor:in)
  • Sreeramulu Valligatla - , Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden (Autor:in)
  • Xiaoyu Wang - , Institut für Angewandte Physik (IAP), Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden (Autor:in)
  • Haiyun Dong - , Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden (Autor:in)
  • Libo Ma - , Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden (Autor:in)
  • Oliver G. Schmidt - , Technische Universität Chemnitz, Technische Universität Dresden (Autor:in)

Abstract

Composite optical microcavities, as a versatile platform for light manipulation, have been theoretically revealed that the configuration of concentrically coupled resonant trajectories can significantly enhance the coupling strength, which is however challenging in experimental preparation. Here coaxial whispering gallery resonator chains were designed and fabricated with optically coupled modes split apart by more than the free spectral range (FSR) of the cavity itself. Because such three dimensional (3D) coupled optical systems are extremely difficult to obtain with traditional processing techniques an approach is developed to release and roll-up pre-strained, nanostructured silicon nitride membranes into microtubular optical cavities. Parallel nano-ridges modified on the patterned membranes form into coaxial micro ring arrays after the membrane rolls up into a microtubular structure. Energetic degeneracy, as a consequence of mode splitting exceeding the FSR, leads to interference between bonding and antibonding modes with different mode identities (mode number), resulting in novel light modulation in the form of hybrid super wave modes, which display a distinct hopping behavior resembling linear stretch modes of an oscillator chain.

Details

OriginalspracheEnglisch
Aufsatznummer2200085
FachzeitschriftLaser and Photonics Reviews
Jahrgang16
Ausgabenummer9
PublikationsstatusVeröffentlicht - Sept. 2022
Peer-Review-StatusJa

Schlagworte

Schlagwörter

  • 3D photonics, nanomembranes, photonic molecules, roll-up, self-assembly, whispering gallery mode resonators