NDLI: Surface Plasmon Resonances in Sierpinski-Like Photonic Crystal Fibers: Polarization Filters and Sensing Applications

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Surface Plasmon Resonances in Sierpinski-Like Photonic Crystal Fibers: Polarization Filters and Sensing Applications

Content Provider	MDPI
Author	J. R. Mejía-Salazar, Carvalho, William O. F.
Copyright Year	2020
Description	We investigate the plasmonic behavior of a fractal photonic crystal fiber, with Sierpinski-like circular cross-section, and its potential applications for refractive index sensing and multiband polarization filters. Numerical results were obtained using the finite element method through the commercial software COMSOL $Multiphysics^{®}$. A set of 34 surface plasmon resonances was identified in the wavelength range from $λ=630$ nm to $λ=1700$ nm. Subsets of close resonances were noted as a consequence of similar symmetries of the surface plasmon resonance (SPR) modes. Polarization filtering capabilities are numerically shown in the telecommunication windows from the O-band to the L-band. In the case of refractive index sensing, we used the wavelength interrogation method in the wavelength range from $λ=670$ nm to $λ=790$ nm, where the system exhibited a sensitivity of $S(λ)=1951.43$ nm/RIU (refractive index unit). Due to the broadband capabilities of our concept, we expect that it will be useful to develop future ultra-wide band optical communication infrastructures, which are urgent to meet the ever-increasing demand for bandwidth-hungry devices.
Starting Page	4654
e-ISSN	14203049
DOI	10.3390/molecules25204654
Journal	Molecules
Issue Number	20
Volume Number	25
Language	English
Publisher	MDPI
Publisher Date	2020-10-13
Access Restriction	Open
Subject Keyword	Molecules Telecommunications Fractal Geometry Refractive Index Sensor Surface Plasmon Resonance (spr) Photonic Crystal Fiber (pcf) Polarization Filter
Content Type	Text
Resource Type	Article

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