Lossy Mode Resonance-based pH sensor using a tapered single mode optical fiber coated with a polymeric nanostructure

  • A. B. Socorro*
  • , I. Del Villar
  • , J. M. Corres
  • , F. J. Arregui
  • , I. R. Matias
  • *Corresponding author for this work

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

12 Citations (Scopus)

Abstract

This contribution presents a pH sensor based on the combination of two technologies: tapered standard-single mode optical fiber (S-SMF) and an electromagnetic resonance phenomenon called Lossy Mode Resonance (LMR). This last phenomenon is produced by coating the optical structure with a thin polymeric film, which for specific values of the coating refractive index and thickness causes a maximum coupling of light guided in the tapered S-SMF region. Layer-by-layer electrostatic self assembly technique was used for the fabrication of a polymeric sensing nanostructure. The construction process was optimized in order to visualize the LMR behavior with a device length of 5 mm. The sensing combination produces a 250 nm wavelength-shift and a 20 dB attenuation variation of the LMR when varying the pH from 4 to 6.

Original languageEnglish
Title of host publicationIEEE Sensors 2011 Conference, SENSORS 2011
Pages238-241
Number of pages4
DOIs
Publication statusPublished - 2011
Externally publishedYes
Event10th IEEE SENSORS Conference 2011, SENSORS 2011 - Limerick, Ireland
Duration: 28 Oct 201131 Oct 2011

Publication series

NameProceedings of IEEE Sensors

Conference

Conference10th IEEE SENSORS Conference 2011, SENSORS 2011
Country/TerritoryIreland
CityLimerick
Period28/10/1131/10/11

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