Open AccessPhotonic spin Hall effect: a new window in D-shaped fiber by weak measurements
Author(s) -
Famei Wang,
Zhaohao Sun,
Chunhong Xu,
Lin Yang,
Chao Liu,
Tao Sun,
Paul K. Chu
Publication year - 2019
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.27.014064
Subject(s) - materials science , photonics , optics , photonic crystal , spin hall effect , optoelectronics , dielectric , fiber , wavelength , silicon , optical fiber , photonic crystal fiber , physics , spin polarization , quantum mechanics , composite material , electron
The enhanced photonic spin Hall effect (SHE) based on the D-shaped fiber with Ag-Ni alloy/silicon layers is proposed and theoretically investigated under excitation of surface plasmon resonance (SPR). In order to achieve the maximum transverse spin-dependent displacements for practical photonic devices, parameters such as the thickness of the Ag-Ni alloy and silicon layers in the D-shaped fiber are optimized. Theoretical modeling and numerical simulation demonstrate that the multilayer structure can effectively enhance the photonic SHE. The maximum transverse shift of 420 μm obtained with optimized parameters is larger than those in the literature. In addition, a maximum angular sensitivity of 114.6°/RIU is achieved by the wavelength interrogation method. Our concept and theoretical assessment suggest a novel and effective means to enhance the photonic SHE, bring us one step closer to the possibility to characterize parameters of dielectric layers by weak measurements, and accelerate the development of optical fibers based on the photonic SHE.