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

Shaohua Pi, Xie Zeng, Nan Zhang, Dengxin Ji, Borui Chen, Haomin Song, Alec Cheney, Yun Xu, Suhua Jiang, Dalin Sun, Yun Song, Qiaoqiang Gan

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

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.
Original languageEnglish (US)
JournalIEEE Photonics Journal
Volume8
Issue number1
DOIs
StatePublished - Feb 1 2016
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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