Open AccessSimultaneous excitation of leaky mode resonance and surface plasmon resonance in tilted fiber Bragg grating
Author(s) -
Zhihong Li,
Xiukai Ruan,
Yuxing Dai
Publication year - 2019
Publication title -
applied physics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.911
H-Index - 94
eISSN - 1882-0786
pISSN - 1882-0778
DOI - 10.7567/1882-0786/ab49a3
Subject(s) - materials science , resonance (particle physics) , surface plasmon resonance , excitation , grating , optics , guided mode resonance , fiber bragg grating , excited state , surface plasmon , leaky mode , optoelectronics , long period fiber grating , plasmon , laser , single mode optical fiber , fiber , wavelength , diffraction grating , nanoparticle , dispersion shifted fiber , fiber optic sensor , radiation mode , physics , atomic physics , nanotechnology , composite material , quantum mechanics
This paper presents the first work that theoretically demonstrates simultaneous excitation of both enhanced leaky mode resonance (eLMR) and surface plasmon resonance in ultra-thin Au film coated tilted fiber Bragg grating. The mechanism is discussed by investigating the influence of Au film on mode characteristics of leaky modes and guided modes. A stable transmission spectrum that is only composed of strong dense comb-like eLMR in a wide window is realized. The eLMR excited by metal film exhibits insensitive response to external perturbation, which makes it ideal for tunable devices like optical filters and fiber lasers.