Abstract

A sensor based on a fiber optic hetero-structure to determine the concentration of alcohol has been proposed. The structure of the sensing probe in this research is a singlemode-multimode-singlemode (SMS) which bent into Ushaped and soon called as SMS u-bent. The SMS structure was chosen to get a higher sensitivity. This research utilizes the principle of multimode interference and evanescent field by modifying the cladding with various alcohol concentration. Testing of the sensor's performance has been done by measuring the sensor's power output response to the length of the SMS fiber optic, bending diameter, and alcohol concentration. Based on the experiment result, the ubent SMS fiber optic with 50 mm bending diameter and 63 mm MMF lenght has the highest sensitivity, 3.87 dB/% and the minimum resolution, 0.26 x 10-3 %.

Original languageEnglish
Title of host publicationSecond International Seminar on Photonics, Optics, and Its Applications, ISPhOA 2016
EditorsAgus Muhamad Hatta, Aulia M.T. Nasution
PublisherSPIE
ISBN (Electronic)9781510607514
DOIs
Publication statusPublished - 2016
Event2nd International Seminar on Photonics, Optics, and Its Applications, ISPhOA 2016 - Legian - Kuta, Bali, Indonesia
Duration: 24 Aug 201625 Aug 2016

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10150
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference2nd International Seminar on Photonics, Optics, and Its Applications, ISPhOA 2016
Country/TerritoryIndonesia
CityLegian - Kuta, Bali
Period24/08/1625/08/16

Keywords

  • Alcohol sensor
  • Fiber optic
  • Hetero-structure
  • Multimode interference
  • Singlemode-multimode-singlemode
  • U-bent

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