Simultaneous Interrogation of Multiple Tapered Fiber Optic Sensors by Interferometric Illumination

Shivasiddharth Uma, Kieran T. O'Mahoney, Ken Thomas, James Kennedy

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

1 Citation (Scopus)


Tapered Fiber Optic Sensors (TFOS) are typically interrogated using an Optical Spectrum Analyzer (OSA) or a spectrometer. As a result, multiple TFOS with similar operating wavelengths cannot be interrogated simultaneously. This paper is an extension to the previously published work on 'Interrogation of Fiber Bragg Grating Arrays by Illumination using a Low Coherence Interferogram' [1]. In this paper, the ability of the system to simultaneously interrogate multiple TFOS in a single interferometric scan is demonstrated. Varying concentrations of glucose solutions were used to determine the system's sensing capability. Of the two TFOS used, the one with the larger FSR was found to yield a linear resolution of \mathbf{\sim 2.96\mathbf{e}-3\Delta \mathrm{Rad}/1000\mathbf{ppm}} and the other sensor with a smaller FSR yielded a linear resolution of \mathbf{\sim 5.23\mathbf{e}-3\Delta \mathbf{Rad}/1000\mathbf{ppm}}.

Original languageEnglish
Title of host publication2018 IEEE SENSORS, SENSORS 2018 - Conference Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538647073
Publication statusPublished - 26 Dec 2018
Event17th IEEE SENSORS Conference, SENSORS 2018 - New Delhi, India
Duration: 28 Oct 201831 Oct 2018

Publication series

NameProceedings of IEEE Sensors
ISSN (Print)1930-0395
ISSN (Electronic)2168-9229


Conference17th IEEE SENSORS Conference, SENSORS 2018
CityNew Delhi


  • fiber optic sensor
  • interferometric illumination
  • interferometry
  • micro-structured fiber optic sensor
  • tapered sensor


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