Optical Spectrum of Uncladded Fiber Bragg Grating for Glucose Concentration Measurement

Nur Abdillah Siddiq, Asnawi Asnawi, Sib Krishna Goshals, Yono Hadi Pramono

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)


In this study, we present an investigation of uncladded fiber bragg grating (FBG) as a chemical sensor towards glucose in aqueous solution with various concentration from 0 - 60 wt%.The measurement system consists of deuterium-halogen lamp as light source, uncladded fiber bragg gratings that have been etched with nitric acid (HNO3) as sensing element, and spectrometer as optical spectrum viewer. The measured parameter is an intensity in optical spectrum due to changes in glucose solution concentration It was found that the uncladded FBG exhibits the response towards water with varying concentrations of glucose. The results show that the intensity shifts to lower value as the glucose concentration increases with hysteresis below 0.05 a.u.

Original languageEnglish
Article number032085
JournalJournal of Physics: Conference Series
Issue number3
Publication statusPublished - 23 Jul 2020
Event3rd International Conference on Science and Technology 2019, ICST 2019 - Surabaya, Indonesia
Duration: 17 Oct 201918 Oct 2019


  • Fiber Bragg Grating
  • Glucose Sensor
  • Nitric Acid
  • Optical Spectrum


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