Microgel photonics: a breathing cavity onto optical fiber tip

A. Ricciardi; A. Aliberti; M. Giaquinto; A. Micco; A. Cusano

doi:10.1117/12.2205404

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28 September 2015 Microgel photonics: a breathing cavity onto optical fiber tip

A. Ricciardi, A. Aliberti, M. Giaquinto, A. Micco, A. Cusano

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Proceedings Volume 9634, 24th International Conference on Optical Fibre Sensors; 963486 (2015) https://doi.org/10.1117/12.2205404
Event: International Conference on Optical Fibre Sensors (OFS24), 2015, Curitiba, Brazil

Abstract

We experimentally demonstrate a novel multifunctional optical fiber probe resulting from the integration between two rapidly emerging technologies such as Lab-on-Fiber and Microgel Photonics. The device consists of a microgel based cavity formed by metallic slabs supporting plasmonic resonances, directly integrated on the optical fiber tip. By exploiting the multiresponsivity of microgel systems, variations of temperature, PH, ionic strength, as well as molecular binding events, make the cavity to ‘breath’, thus modulating the interference pattern in the reflection spectrum. The microgel layer can be synthetized in such a way to obtain different thicknesses, corresponding to different operating regimes, opening new avenues for the realization of advanced multifunctional nanoprobes.

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A. Ricciardi, A. Aliberti, M. Giaquinto, A. Micco, and A. Cusano "Microgel photonics: a breathing cavity onto optical fiber tip", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 963486 (28 September 2015); https://doi.org/10.1117/12.2205404

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