Second-Order Dispersion Sensor Based on Multi-Plasmonic Surface Resonances in D-Shaped Photonic Crystal Fibers

• Type: Article in International Scientific Journal
• Date: 2021

Authors

Cardoso, MP (Author) Other; Silva, AO (Author) Other; Romeiro, AF (Author) Other; Giraldi, MTR (Author) Other; Costa, JCWA (Author) Other; Santos, JL (Author) FCUP; Baptista, JM (Author) Other; Guerreiro, A (Author) FCUP

Journal

Title: Photonics

Vol. 27

Final page: 181

Publisher: MDPI

Indexing

ISI Web of Knowledge - 3 Citations

Scopus - 2 Citations

Other information

Authenticus ID: P-00V-4D3

DOI: 10.3390/photonics8060181

Abstract (EN): This paper proposes a scheme to determine the optical dispersion properties of a medium using multiple localized surface plasmon resonances (SPR) in a D-shaped photonic crystal fiber (PCF) whose flat surface is covered by three adjacent gold layers of different thicknesses. Using computational simulations, we show how to customize plasmon resonances at different wavelengths, thus allowing for obtaining the second-order dispersion. The central aspect of this sensing configuration is to balance miniaturization with low coupling between the different localized plasmon modes in adjacent metallic nanostructures. The determination of the optical dispersion over a large spectral range provides information on the concentration of different constituents of a medium, which is of paramount importance when monitoring media with time-varying concentrations, such as fluidic media.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8