Theoretical Study of Phase-Interrogated Surface Plasmon Resonance Based on Optical Fiber Sensors with Metallic and Oxide Layers

• Type: Article in International Scientific Journal
• Date: 2015

Authors

Moayyed, H (Author) Other; Leite, IT (Author) Other; Coelho, L (Author) Other; Santos, JL (Author) FCUP; Viegas, D (Author) FCUP

Journal

Title: Plasmonics

Vol. 10

Pages: 979-987

ISSN: 1557-1955

Publisher: Springer Nature

Indexing

ISI Web of Knowledge - 9 Citations

Scopus - 10 Citations

Other information

Authenticus ID: P-00G-23V

DOI: 10.1007/s11468-015-9889-2

Abstract (EN): This work reports the theoretical investigation of optical fiber surface plasmon resonance sensors incorporating an internal metallic layer of silver covered with an oxide layer. This research is supported by the application of an effective analytical model combining geometrical optics with the transfer matrix theory for stratified optical media. Different oxide materials like titanium dioxide, silicon dioxide, and aluminum oxide are considered aiming to achieve increased/enhanced sensitivity to refractive index variations of the external medium, particularly when addressing phase interrogation. It is shown that the combination of a 50-nm thickness silver inner layer with a dielectric titanium oxide layer of a specific thickness enables high-performance phase sensitivity reading and is compatible with tailoring the sensor working region to the third telecommunication wavelength window around 1550 nm.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9