Open AccessGiant and highly reflective Goos-Hänchen shift in a metal-dielectric multilayer Fano structure
Author(s) -
Hirozumi Saito,
Yoichiro Neo,
Takahiro Matsumoto,
Makoto Tomita
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.27.028629
Subject(s) - fano resonance , optics , surface plasmon polariton , dielectric , attenuation , polariton , surface plasmon , materials science , fano plane , wavelength , interference (communication) , optoelectronics , plasmon , physics , telecommunications , channel (broadcasting) , mathematics , computer science , pure mathematics
We experimentally demonstrated a giant Goos-Hänchen (GH) shift in a metal-dielectric multilayer Fano structure. The observed GH shift was 0.176 mm, which corresponded to (GH shift/ λ ) = 493, where λ is the incident wavelength. A unique feature of this giant GH shift was that it occurred without attenuation, i.e., reflectivity ∼1, due to Fano interference between surface plasmon polariton and high-Q dielectric waveguide mode. The Q-value is determined by the coupling loss. Therefore, we can enhance the GH shift to an arbitrarily large value by controlling the coupling strength. The unique feature whereby the giant GH shift occurs without attenuation has great potential for real-world applications, such as optical switching, optical filters, and sensors, where the reduction of reflected beam intensity is currently a major drawback.