Coupling between waveguides and microresonators: the local approach
arXiv:2004.04661 · doi:10.1364/OE.399978
Abstract
Coupling between optical microresonators and waveguides is a critical characteristic of resonant photonic devices with complex behavior that is not well understood. When the characteristic variation length of the microresonator modes is much larger than the waveguide width, local coupling parameters emerge that are independent of the resonator mode distributions and offer a simplified description of coupling behavior. We develop a robust numerical-fitting-based methodology for experimental determination of the local coupling parameters in all coupling regimes and demonstrate their characterization along a microfiber waveguide coupled to an elongated bottle microresonator.
arXiv comment7 pages and 3 figures. Version 3 is substantially revised and reformatted
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