Title :
Fiber Optic Sensor for High-Sensitivity Salinity Measurement
Author :
Guzman-Sepulveda, Jose Rafael ; Ruiz-Perez, Victor Ivan ; Torres-Cisneros, Miguel ; Sanchez-Mondragon, Jose Javier ; May-Arrioja, Daniel Alberto
Author_Institution :
Fiber & Integrated Opt. Lab., Univ. Autonoma de Tamaulipas, Reynosa, Mexico
Abstract :
A highly sensitive salinity sensor based on a two-core optical fiber is demonstrated for both high- and low-concentration regimes. Salinity of several aqueous solutions is measured in the ranges from 0 to 5 mol/L and from 0 to 1 mol/L with sensitivities of 14.0086 and 12.0484 nm/(mol/L), respectively. The achieved sensitivity is ~19 times higher than that recently reported for polymide-coated photonic crystal fibers.
Keywords :
fibre optic sensors; aqueous solutions; fiber optic sensor; high-concentration regime; high-sensitivity salinity measurement; highly sensitive salinity sensor; low-concentration regime; two-core optical fiber; Optical fiber couplers; Optical fiber sensors; Optical variables measurement; Sensitivity; Temperature measurement; Temperature sensors; Fiber optics sensor; in-fiber directional coupler; salinity sensor;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2013.2286132
