Hybrid plasmonic-dielectric resonant waveguide grating for wavelength-selective diffraction

Giorgio Quaranta; Christian Schneider; Benjamin Gallinet

doi:10.1117/12.2543775

26 February 2020 Hybrid plasmonic-dielectric resonant waveguide grating for wavelength-selective diffraction

Giorgio Quaranta, Christian Schneider, Benjamin Gallinet

Proceedings Volume 11289, Photonic and Phononic Properties of Engineered Nanostructures X; 112890U (2020) https://doi.org/10.1117/12.2543775
Event: SPIE OPTO, 2020, San Francisco, California, United States

Abstract

The search for full control of amplitude and phase of the electromagnetic field from planar surfaces is of high interest for the development of highly integrated photonic systems and at optical devices. A hybrid dielectric plasmonic resonant waveguide grating which enables highly wavelength-selective first order diffraction in a multimode light guide is reported. Measurements show a narrowband peak in the first order of diffraction at resonance, while the undesired transmitted signal is strongly suppressed at other wavelengths as well as in the zeroth diffraction order. Another hybrid resonant waveguide grating is reported and shows a bandwidth of 20nm in the zeroth order of transmission. Overall, this work shows the promising use of hybrid structures for taking the best features of both plasmonic and dielectric grating resonances for designing highly integrated optical devices such as spectrometers or optical security features.

Citation Download Citation

Giorgio Quaranta, Christian Schneider, and Benjamin Gallinet "Hybrid plasmonic-dielectric resonant waveguide grating for wavelength-selective diffraction", Proc. SPIE 11289, Photonic and Phononic Properties of Engineered Nanostructures X, 112890U (26 February 2020); https://doi.org/10.1117/12.2543775

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KEYWORDS

Waveguides

Diffraction

Diffraction gratings

Optical filters

Coating

Plasmonics

Nanoimprint lithography

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