Highly sensitive, localized surface plasmon resonance fiber device for environmental sensing, based upon a structured bi-metal array of nano-wires

Allsop, Thomas D.P.; Neal, Ron; Mou, Chengbo; Kalli, Kyriacos and Webb, David J. (2014). Highly sensitive, localized surface plasmon resonance fiber device for environmental sensing, based upon a structured bi-metal array of nano-wires. Optics Letters, 39 (20), pp. 5798-5801.

Abstract

We demonstrate a bi-metal coated (platinum and gold or silver), localized surface plasmon resonance fiber sensor with an index sensitivity exceeding 11,900 nm/RIU, yielding an index resolution of 2 × 10-5 in the aqueous index regime. This is one of the highest index sensitivities achieved with an optical fiber sensor. The coatings consist of arrays of bi-metal nano-wires (typically 36 nm in radius and 20 μm in length), supported by a silicon dioxide thin film on a thin substrate of germanium, the nano-wires being perpendicular to the longitudinal axis of the D-shaped fiber.

Publication DOI: https://doi.org/10.1364/OL.39.005798
Divisions: Engineering & Applied Sciences > Electrical, electronic & power engineering
Engineering & Applied Sciences > Institute of Photonics
Additional Information: Funding: EPSRC (EP/J010413)
Uncontrolled Keywords: Atomic and Molecular Physics, and Optics
Published Date: 2014-10-15

Download

Full text not available from this repository.

Export / Share Citation


Statistics

Additional statistics for this record