Dielectric-Grating-Coupled Surface Plasmon Resonance From the Back Side of the Metal Film for Ultrasensitive Sensing

We propose a dielectric grating that can launch surface plasmon resonance (SPR) modes efficiently on the other side of flat metal films, which is similar to the conventional prism coupling mechanism. Importantly, this structure can excite SPR under the normal incident light, which is particularly su...

Full description

Saved in:
Bibliographic Details
Published in:IEEE photonics journal 2016-02, Vol.8 (1), p.1-7
Main Authors: Shaohua Pi, Xie Zeng, Nan Zhang, Dengxin Ji, Borui Chen, Haomin Song, Cheney, Alec, Yun Xu, Suhua Jiang, Dalin Sun, Yun Song, Qiaoqiang Gan
Format: Article
Language:English
Subjects:
Absorption
biosensors
Couplings
Detection
Dielectrics
Gratings
Gratings (spectra)
Launches
Metal films
Metals
Optical surface waves
Photonics
plasmonics
Plasmons
Resonance lines
Sensors
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We propose a dielectric grating that can launch surface plasmon resonance (SPR) modes efficiently on the other side of flat metal films, which is similar to the conventional prism coupling mechanism. Importantly, this structure can excite SPR under the normal incident light, which is particularly suitable for the integration with optical fiber tips. By launching the SPR mode near the wavelength of 1.55 μm with a very narrow resonance line width (~4 nm), this structure is promising for the development of high-performance portable, flexible, and real-time refractometric sensing applications.
ISSN:1943-0655
1943-0647
DOI:10.1109/JPHOT.2015.2509870