Novel Side-Polished Balloon Shaped Heterocore Structured Plastic Optical Fibre Ethanol Sensor

Sanober Farheen Memon, Ruoning Wang, Bob Strunz, Bhawani Shankar Chowdhry, J. Tony Pembroke, Elfed Lewis

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A unique side-polished balloon shaped heterocore structure plastic optical fibre (POF) sensor for real-time measurement of very low to high ethanol concentration in water is reported. The sensor is designed as a large core-small core-large core heterocore structure where small core fibre (SCF) acts as a sensing region, whereas large core fibre (LCFs) are used as input and output light waveguide s as well as to introduce the light leakage in the cladding of SCF at the heterocore structure’s input interface and hence generate the significant evanescent field. The principle of operation of the sensor is based on evanescent field interaction at the interface of modif ied SCF and the liquid boundary. The sensor is characterized for ethanol-water solutions in the ethanol concentration ranges of 20 %v/v to 80 %v/v, 1 %v/v to 10 %v/v, and 0.1 %v/v to 1 %v/v, demonstrating a maximum sensitivity of 54673 %/RIU. The experimentally evaluated high sensitivity of this sensor design for real-time measurement of ethanol concentration in water at different ranges makes it a potential candidate for implementation in the industry as a low-cost and real-time solution for ethanol sensing as well as other RI sensing applications.

Original languageEnglish
Title of host publicationEuropean Workshop on Optical Fibre Sensors, EWOFS 2023
EditorsMarc Wuilpart, Christophe Caucheteur
PublisherSPIE
ISBN (Electronic)9781510665002
DOIs
Publication statusPublished - 2023
Event2023 European Workshop on Optical Fibre Sensors, EWOFS 2023 - Mons, Belgium
Duration: 23 May 202326 May 2023

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12643
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference2023 European Workshop on Optical Fibre Sensors, EWOFS 2023
Country/TerritoryBelgium
CityMons
Period23/05/2326/05/23

Keywords

  • Ethanol sensor
  • Heterocore Structure
  • Plastic optical fibre
  • Refractive Index Sensor
  • Side-polishing

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