Open AccessAll optic-fiber coupled plasmon waveguide resonance sensor using ZrS2 based dielectric layer
Author(s) -
Jiang Ma,
Kun Liu,
Junfeng Jiang,
Tianhua Xu,
Shuang Wang,
Pengxiang Chang,
Jiahang Zhang
Publication year - 2020
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.389279
Subject(s) - materials science , refractive index , surface plasmon resonance , fiber optic sensor , dielectric , optics , optical fiber , layer (electronics) , optoelectronics , transfer matrix method (optics) , plasmon , waveguide , resonance (particle physics) , fiber , nanoparticle , nanotechnology , physics , particle physics , composite material
We developed an all optic-fiber coupled plasmon waveguide resonance (CPWR) sensor using a zirconium disulfide (ZrS 2 ) based dielectric layer. The dielectric constants of ZrS 2 were obtained using first-principles calculations. The theoretical model of the proposed sensor was established based on the transfer matrix method, leading to the optimization of the parameters in the sensor. The sensor was fabricated by depositing a gold layer of 35 nm on the fiber core and immobilizing the ZrS 2 layer on the gold layer via physical adsorption method. An experimental setup was implemented for measuring the refractive index. The sensor with two cycles showed the best performance, with a sensitivity of higher than 8000 nm/RIU.