Journal article
Modeling of gold circular sub-wavelength apertures on a fiber endface for refractive index sensing?
H Nguyen, GW Baxter, SF Collins, F Sidiroglou, A Roberts, TJ Davis
Photonic Sensors | Published : 2012
Abstract
A finite-difference time-domain approach was used to investigate the excitation of surface plasmons of the circular sub-wavelength apertures on an optical fiber endface. This phenomenon provided the basis of a sensitive liquid refractive index sensor. The proposed sensor is compact and has the potential to be used in biomedical applications, having a sensitivity of (373 plusmn; 16) nm per refractive index unit (RIU) as found through the variation of a reflection minimum with the wavelength. © The Author(s) 2012.
Grants
Awarded by Australian Research Council
Funding Acknowledgements
The authors would like to acknowledge the financial support of Victoria University and the Australian Research Council (project number DP0878268).