|A. Raza, J. Losada, S. Clemmen, R. Baets, A. Griol, A. Martinez
|Surface enhanced Raman spectroscopy via isolated plasmonic nanoantennas integrated on silicon nitride waveguides
|International Conference Proceedings
|European Conference on Integrated Optics (ECIO
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In this work, we demonstrate experimentally surface-enhanced Raman spectroscopy (SERS) via bowtie
metallic nanoantennas integrated into silicon nitride waveguides. Two different configurations are considered:nanoantenna on top of the waveguide and nanoantenna inside a gap created in the waveguide. Even though both configurations allow for observing the Raman peaks of 4-nitrothiophenol (NTP), the latter shows higher peaks as a result of a better coupling from the Raman active centres to the fundamental TE waveguide mode. Our results pave the way towards the realization of massive SERS detectors on silicon-compatible photonic chips.
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