Spatially resolved plasmonic sensing at the tip of a multimode fiber

Liam Collard; Filippo Pisano; Di Zheng; Antonio Balena; Linda Piscopo; Muhammad Fayyaz Kashif; Marco Pisanello; Cristian Ciraci; Massimo De Vittorio; Ferruccio Pisanello

doi:10.1117/12.2668806

11 August 2023 Spatially resolved plasmonic sensing at the tip of a multimode fiber

Liam Collard, Filippo Pisano, Di Zheng, Antonio Balena, Linda Piscopo, Muhammad Fayyaz Kashif, Marco Pisanello, Cristian Ciraci, Massimo De Vittorio, Ferruccio Pisanello

Author Affiliations +

Proceedings Volume 12627, Translational Biophotonics: Diagnostics and Therapeutics III; 1262712 (2023) https://doi.org/10.1117/12.2668806
Event: European Conferences on Biomedical Optics, 2023, Munich, Germany

Abstract

The ability to fabricate plasmonic structures on the distal facet of an optical fiber has led to a diverse range of minimally invasive sensors. However these applications have been hindered by the inherent turbidity of the fiber and complex transmission properties of the nanostructures. We propose to use a wavefront shaping technique to pre-shape light prior to transmission through the nanostructed fiber to control the coupling between the guided modes of the fiber and the plasmonic nanostructures. We show that the sensing resolution of a plasmonic fiber optic can achieve a sub-cellular spatial resolution in biological applications. In this work, a broad range of plasmonic structures are explored as candidates for spatially resolved plasmonic sensing including periodic nanostructures for extraordinary optical transmission and sub-diffraction beam formation as well as nanoislands fabricated by a solid-state dewetting procedure for surface enhanced Raman spectroscopy.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Liam Collard, Filippo Pisano, Di Zheng, Antonio Balena, Linda Piscopo, Muhammad Fayyaz Kashif, Marco Pisanello, Cristian Ciraci, Massimo De Vittorio, and Ferruccio Pisanello "Spatially resolved plasmonic sensing at the tip of a multimode fiber", Proc. SPIE 12627, Translational Biophotonics: Diagnostics and Therapeutics III, 1262712 (11 August 2023); https://doi.org/10.1117/12.2668806

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KEYWORDS

Plasmonics

Multimode fibers

Nanostructures

Nanolithography

Optical transmission

Spatial resolution

Solid state electronics

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