Abstract
We have numerically evaluated wavelength characteristics at telecommunication wavelengths by means of a doubleplasmonic-racetrack resonator using the finite-difference time domain method. We investigated the effect of the space between the two plasmonic racetracks of the resonator on the quality factor. The quality factor of the proposed structure is 57 when the space between two racetracks is 600 nm. The quality factor of a double-plasmonic-racetrack resonator of a dielectric-filled trench is 1.5 times greater than that of a single-plasmonic-racetrack resonator of an air-filled trench. The phase mismatch of the trench channel plasmon polaritons contributes to the quality factor of the double-plasmonicracetrack resonator.
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Okamoto, H., Onishi, S., Kataoka, M. et al. Characteristics of double-plasmonic-racetrack resonator to increase quality factor. OPT REV 20, 26–30 (2013). https://doi.org/10.1007/s10043-013-0005-6
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DOI: https://doi.org/10.1007/s10043-013-0005-6