Fiber Optic Sensor for High-Sensitivity Salinity Measurement

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), respectivel...

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Bibliographic Details
Author: José Javier Sánchez Mondragón
Format: article
Status:Versión aceptada para publicación
Publication Date:2013
Country:México
Institution:Instituto Nacional de Astrofísica, Óptica y Electrónica
Repository:Repositorio Institucional del INAOE
Language:English
OAI Identifier:oai:inaoe.repositorioinstitucional.mx:1009/2204
Online Access:http://inaoe.repositorioinstitucional.mx/jspui/handle/1009/2204
Access Level:Open access
Keyword:info:eu-repo/classification/Inspec/Fiber optics sensor
info:eu-repo/classification/Inspec/In-fiber directional coupler
info:eu-repo/classification/Inspec/Salinity sensor
info:eu-repo/classification/cti/1
info:eu-repo/classification/cti/22
info:eu-repo/classification/cti/2209
Description
Summary: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.