Year-end Sale % OFF 
Abstract
We have investigated, in a numerical and experimental way, a refractive index (RI) sensor based on surface plasmon resonance (SPR) in a silver-coated light-diffusing fiber (LDF). The experimental tests were conducted using water-glycerine mixtures with refractive indices ranging from 1.332 to 1.388. In the considered refractive index range, the experimental results show a sensitivity of the SPR wavelength to the outer medium’s RI ranging from ~2600 to ~4700 nm/RIU, which is larger than the sensitivity recently reported for a gold-coated LDF sensor (~1200 to ~4000 nm/RIU). The silver-coated sensor is also shown to ensure a higher signal-to-noise ratio (SNR) compared to the gold-coated sensor.
Highlights
An efficient optical sensing technique used to measure the refractive index (RI) of a dielectric medium in contact with a metal film is surface plasmon resonance (SPR)
We have recently demonstrated that a light-diffusing fiber (LDF), covered with a thin gold film, an be successfully employed as an SPR sensor platform [15]
We report the results of an SPR sensor fabricated by sputtering a thin silver film above the uncoated area of the same LDF
Summary
An efficient optical sensing technique used to measure the refractive index (RI) of a dielectric medium (liquid media) in contact with a metal film is surface plasmon resonance (SPR). In SPR sensors, a high sensitivity can be obtained by the use of a silver (Al) or gold (Au) film. We have recently demonstrated that a light-diffusing fiber (LDF), covered with a thin gold film, an be successfully employed as an SPR sensor platform [15].
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
