Whispering Gallery Modes (WGMs) Optical resonators have the characteristics of high Q and small mode volume, and are of great importance to the related research in nonlinear optics, cavity quantum electrodynamics and quantum optics.
Based on the previous fiber-optic evanescent field sensing and WGM nonlinearity studies, Wu Yihui, a group of researchers at the State Key Laboratory of Applied Optics, Changchun Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, first observed that a number of transparent windows like EIT Phenomenon, and explain the physical mechanism of the phenomenon, the related research results are published in Optics Letters 41 (8) doi: 10.1364 / OL.41.001825
The use of tapered fiber-excited WG-WGMs to obtain dense radial resonance mode, by changing the Bottle axial deformation to obtain a tunable resonant cavity to change the mode of coupling, easily in a single resonator to achieve a tunable class EIT, Reducing the difficulty of pattern coupling. This research provides new ideas for designing a tunable, multi-channel photonic device for a single WGM resonator.
This research project has been funded by the National Key Laboratory of Applied Optics and National "863" Program (Project No. 2015AA042402).
Figure 1. The tunable EIT phenomenon in the Bottle cavity
Figure 2. The multi-clear window EIT phenomenon in the Bottle cavity
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