First step towards an interferometric and localized surface plasmon fiber optic sensor

Harald Ian D. I. Muri; Andon Bano; Dag Roar Hjelme

doi:10.1117/12.2262981

23 April 2017 First step towards an interferometric and localized surface plasmon fiber optic sensor

Harald Ian D. I. Muri, Andon Bano, Dag Roar Hjelme

Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 1032323 (2017) https://doi.org/10.1117/12.2262981
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of

Abstract

We present a first demonstration of a novel multi-parameter fiber optic (FO) sensor concept based on gold nanoparticles (GNP) embedded in a stimuli-responsive hydrogel material. A hemispherical hydrogel immobilized on the optical fiber end-face forms a low-finesse Fabry-Perot (FP) interferometer. The GNPs exhibit local surface plasmon resonance (LSPR) that is sensitive towards the refractive index of the surrounding environment, while the stimuli-responsive hydrogel is sensitive towards specific chemical compounds. We evaluate the quality of the interferometric and LSPR signal as a function GNP concentration and of hydrogel swelling degree stimulated by ethanol solutions. The GNPs shows to have little influence on the visibility of the FP etalon, while LSPR of GNP shows to be sensitive towards the surface refractive index rather than bulk refractive index. This demonstration shows that the sensor concept has the potential to be used in applications such as an intravenous two-parametric real-time sensor for medical purpose.

Citation Download Citation

Harald Ian D. I. Muri, Andon Bano, and Dag Roar Hjelme "First step towards an interferometric and localized surface plasmon fiber optic sensor", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 1032323 (23 April 2017); https://doi.org/10.1117/12.2262981

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available