Waveguide interrogation of a compound plasmonic nanoantenna

Hardik Vyas; Ravi Sadananda Hegde

doi:10.1117/1.JNP.13.026004

27 April 2019 Waveguide interrogation of a compound plasmonic nanoantenna

Hardik Vyas, Ravi Sadananda Hegde

Author Affiliations +

Journal of Nanophotonics, Vol. 13, Issue 2, 026004 (April 2019). https://doi.org/10.1117/1.JNP.13.026004

Abstract

While long-range propagating plasmons have been extensively investigated for implementing on-chip optical sensing platforms, waveguide-excited localized surface plasmon resonance-based sensing systems have not yet received much attention. Waveguide excitation and readout, an alternative to free-space single-particle spectroscopy, are particularly attractive. A numerical investigation of the optical response of a waveguide-excited plasmonic dolmen-shaped compound nanoantenna is presented. The dolmen shape is found to offer improved refractive index sensing performance in comparison to simpler shapes for both spectral-shift and intensity-shift measuring modalities. The compound plasmonic nanoantenna configuration presented is of interest in hybrid photonic-plasmonic sensing approaches with high-throughput capabilities.

Citation Download Citation

Hardik Vyas and Ravi Sadananda Hegde "Waveguide interrogation of a compound plasmonic nanoantenna," Journal of Nanophotonics 13(2), 026004 (27 April 2019). https://doi.org/10.1117/1.JNP.13.026004

Received: 7 December 2018; Accepted: 11 April 2019; Published: 27 April 2019

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