Experimental Study and Sensing Applications of Polarization-Dependent Lossy Mode Resonances Generated by D-Shape Coated Optical Fibers

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 me...

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Bibliographic Details
Published in:Journal of lightwave technology 2015-06, Vol.33 (12), p.2412-2418
Main Authors: Zubiate, Pablo, Zamarreno, Carlos R., Del Villar, Ignacio, Matias, Ignacio R., Arregui, Francisco J.
Format: Article
Language:English
Subjects:
Beverages
Coatings
D-shaped
Fabrication
LMR
Optical fiber
Optical fiber polarization
Optical fiber sensors
Optical fibers
Refractive index
Refractivity
Refractometer
Refractometers
Salinity concentration TiO2/PSS
Sensitivity
Sodium
Sugar content
Titanium dioxide
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Summary: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.
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2015.2392791