Surface Plasmon Scattering in Exposed Core Optical Fiber for Enhanced Resolution Refractive Index Sensing

Sensors

Elizaveta Klantsataya¹  Alexandre François¹  Heike Ebendorff-Heidepriem¹  Peter Hoffmann¹  Tanya M. Monro¹ 

[1] Institute for Photonics and Advanced Sensing, The University of Adelaide, Adelaide, SA 5005, Australia; E-Mails:

关键词: microstructured optical fiber;    surface plasmon resonance;    surface plasmon scattering;    plasmonics;    biosensing;   

DOI  :  10.3390/s151025090

来源: mdpi

【 摘 要 】

Refractometric sensors based on optical excitation of surface plasmons on the side of an optical fiber is an established sensing architecture that has enabled laboratory demonstrations of cost effective portable devices for biological and chemical applications. Here we report a Surface Plasmon Resonance (SPR) configuration realized in an Exposed Core Microstructured Optical Fiber (ECF) capable of optimizing both sensitivity and resolution. To the best of our knowledge, this is the first demonstration of fabrication of a rough metal coating suitable for spectral interrogation of scattered plasmonic wave using chemical electroless plating technique on a 10 μm diameter exposed core of the ECF. Performance of the sensor in terms of its refractive index sensitivity and full width at half maximum ( was achieved for both fibers in the sensing range of aqueous environment (1.33–1.37) suitable for biosensing applications.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.