Enhanced Directional Coupling of Light with a Whispering Gallery Microcavity
2020; American Chemical Society; Volume: 7; Issue: 2 Linguagem: Inglês
10.1021/acsphotonics.9b01611
ISSN2330-4022
AutoresFuchuan Lei, Georgiy Tkachenko, Xuefeng Jiang, Jonathan M. Ward, Lan Yang, Síle Nic Chormaic,
Tópico(s)Mechanical and Optical Resonators
ResumoDirectional coupling of light in nanophotonic circuits has recently attracted increasing interest, with numerous experimental realizations based on broken rotational or mirror symmetries of the light–matter system. The most prominent underlying effect is the spin–orbit interaction of light in subwavelength structures. Unfortunately, coupling of light to such structures is, in general, very inefficient. In this work, we experimentally demonstrate an order of magnitude enhancement of the directional coupling between two nanowaveguides by means of a whispering gallery microcavity. We also show that both transverse magnetic and transverse electric modes can be used for the enhancement.
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