Abstract
We investigate the dynamic transmission characteristics in metal-dielectric-metal (MDM) waveguide aperture-side-coupled with ring cavity. Assuming the aperture as a resonator, a theoretical model was established to describe the formation and evolution mechanisms of the spectral responses in circular ring structure, and the theoretical results are in good agreement with the finite-difference time-domain (FDTD) simulations. In particular, combining Maxwell’s equations and field distributions, the analytical theory is also applicable to other aperture-side-coupled ring nanostructures, which highlights the utility of the theoretical description. The results may pave the way towards controlling light in highly integrated optical circuits.
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Acknowledgments
The authors are grateful to Prof. Hongjian Li and Yin Huang for their helpful discussions. This work was funded by the National Natural Science Foundation of China under Grant Nos. 11447240 and 11264013 and the Natural Science Foundation of Hunan province under Grant Nos. 2015JJ6092 and 12JJ4003.
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Deng, Y., Cao, G., Wu, Y. et al. Theoretical Description of Dynamic Transmission Characteristics in MDM Waveguide Aperture-Side-Coupled with Ring Cavity. Plasmonics 10, 1537–1543 (2015). https://doi.org/10.1007/s11468-015-9971-9
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DOI: https://doi.org/10.1007/s11468-015-9971-9