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Updated: May 29, 2026
A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response
Published on: January 7, 2019
Comprehensive numerical analysis of a surface-plasmon-resonance sensor based on an H-shaped optical fiber
Mikhail Erdmanis1, Diana Viegas, Markus Hautakorpi
1Fiber Optics Group, Department of Micro and Nanosciences, Aalto University, PO Box 13500, FI-00076 Aalto, Finland. mikhail.erdmanis@aalto.fi
Abstract:
We present and numerically characterize a surface-plasmon-resonance sensor based on an H-shaped optical fiber. In our design, the two U-shaped grooves of the H-fiber are first coated with a thin gold layer and then covered by a uniform titanium dioxide layer to facilitate spectral tuning of the device. A finite element method analysis of the sensor indicates that a refractive-index resolution of up to 5 · 10(3) nm/RIU can be obtained.
