Open AccessOn-fiber plasmonic interferometer for multi-parameter sensing
Author(s) -
Zhijian Zhang,
Yongyao Chen,
Haijun Liu,
Hae-Young Bae,
Douglas A. Olson,
Ashwani K. Gupta,
Miao Yu
Publication year - 2015
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.010732
Subject(s) - refractive index , materials science , interferometry , optics , plasmon , optoelectronics , surface plasmon resonance , optical fiber , photonic crystal fiber , wavelength , physics , nanotechnology , nanoparticle
We demonstrate a novel miniature multi-parameter sensing device based on a plasmonic interferometer fabricated on a fiber facet in the optical communication wavelength range. This device enables the coupling between surface plasmon resonance and plasmonic interference in the structure, which are the two essential mechanisms for multi-parameter sensing. We experimentally show that these two mechanisms have distinctive responses to temperature and refractive index, rendering the device the capability of simultaneous temperature and refractive index measurement on an ultra-miniature form factor. A high refractive index sensitivity of 220 nm per refractive index unit (RIU) and a high temperature sensitivity of -60 pm/ °C is achieved with our device.