Title :
Experimental Study and Sensing Applications of Polarization-Dependent Lossy Mode Resonances Generated by D-Shape Coated Optical Fibers
Author :
Zubiate, Pablo ; Zamarreno, Carlos R. ; Del Villar, Ignacio ; Matias, Ignacio R. ; Arregui, Francisco J.
Author_Institution :
Electr. & Electron. Eng. Dept., Public Univ. of Navarra, Pamplona, Spain
Abstract :
The fabrication and characterization of an optical fiber refractometer based on lossy mode resonances (LMR) is presented. TiO2/poly (sodium 4-styrenesulfonate) (PSS) coatings deposited on side-polished D-shaped optical fibers are used as LMR supporting coatings. LMRs are sensitive to the external medium refractive index, and D-shaped optical fibers enable the observation of TE and TM LMR polarizations. These refractometers based on TE and TM LMR showed an average sensitivity of 2737 nm/RIU and 2893 nm/RIU, respectively, for a surrounding medium refractive index range from 1.35 to 1.41. This study also explores the utilization of previously described refractometers in the context of two common industrial applications, such as the determination of the sugar content or °Brix in beverages and the salt concentration in sea water.
Keywords :
antireflection coatings; fibre optic sensors; optical fibre fabrication; optical fibre losses; optical fibre polarisation; optical fibre testing; polishing; refractive index; refractive index measurement; titanium compounds; TE LMR polarizations; TM LMR polarizations; TiO2; beverages; optical fiber refractometer characterization; optical fiber refractometer fabrication; optical sensing applications; polarization-dependent lossy mode resonances; refractive index; sea water; side-polished D-shaped optical fibers; sugar content determination; titania-poly (sodium 4-styrenesulfonate) coatings; Coatings; Fabrication; Optical fiber polarization; Optical fiber sensors; Refractive index; Sensitivity; D-shaped; LMR; Optical fiber; Refractive index; Refractometer; Salinity concentration TiO2/PSS; Sugar content; optical fiber; refractive index; refractometer; salinity concentration TiO2/PSS; sugar content;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2015.2392791
