Second-Order Dispersion Sensor Based on Multi-Plasmonic Surface Resonances in D-Shaped Photonic Crystal Fibers
| Autor: | M. Thereza R. Giraldi, José Baptista, Anderson O. Silva, Jose Luis Santos, João C. W. A. Costa, Markos P. Cardoso, Ariel Guerreiro, Amanda F. Romeiro |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Physics::Optics 02 engineering and technology 01 natural sciences 010309 optics second-order dispersion sensor 020210 optoelectronics & photonics 0103 physical sciences Dispersion (optics) 0202 electrical engineering electronic engineering information engineering Miniaturization Applied optics. Photonics Radiology Nuclear Medicine and imaging Fluidics Surface plasmon resonance Instrumentation Plasmon business.industry refractive index sensor Atomic and Molecular Physics and Optics TA1501-1820 Wavelength photonic crystal D-shaped fiber Optoelectronics dispersion sensor business surface plasmon resonance Localized surface plasmon Photonic-crystal fiber |
| Zdroj: | Photonics Volume 8 Issue 6 Photonics, Vol 8, Iss 181, p 181 (2021) |
| ISSN: | 2304-6732 |
| DOI: | 10.3390/photonics8060181 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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