Journal
PHYSICS LETTERS A
Volume 420, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.physleta.2021.127754
Keywords
Refractive index sensor; Photonic crystal; Plasmonic; Photonic-plasmonic crystal; Gas sensor
Categories
Ask authors/readers for more resources
This paper presents an optical refractive index sensor based on a hybrid photonic-plasmonic crystal structure, utilizing metal nano-rods to enhance sensitivity and figure of merit, making it suitable for sensing applications in optic communication wavelengths.
In this paper, an optical refractive index sensor based on a hybrid photonic-plasmonic crystal (PhPlC) topology, in which some metal nano-rods are embedded in a rod-type GaAs photonic crystal (PhC) lattice, is proposed. The FDTD method is used for numerical simulation of the sensor. The simulation results illustrate a fairly high sensitivity of 1350 nm/RIU, a high figure of merit (FoM) of 488 RIU-1, and a detection of limit of 2.04 x 10(-4) RIU. The sensitivity of the PhC sensor is dramatically enhanced by employing the excitations of plasmonic mods of the metal nano-rods in the sensor structure. The sensitivity and FoM of the proposed sensor are significantly improved compared to the results published in the literature. The higher sensitivity and the larger FoM are the two important features of the proposed sensor which make it an incredibly suitable candidate for sensing applications in optic communication wavelengths. (C) 2021 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available