Nanorefractometer based on deposition of an overlay on a Long Period Fiber Grating

  • Ignacio Del Villar*
  • , Ignacio R. Matías
  • , Francisco J. Arregui
  • *Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

4 Citations (Scopus)

Abstract

The deposition of an overlay of higher refractive index than the cladding in a Long Period Fiber Grating (LPFG) permits to improve the sensitivity to ambient refractive index changes in a great manner. The question is to obtain an optimum thickness value for the overlay. The problem is analysed with a numerical method based on LP mode approximation and coupled mode theory. Design rules are given for obtaining optimum sensitivity for specific ambient refractive index ranges.

Original languageEnglish
Article number206
Pages (from-to)840-843
Number of pages4
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5855 PART II
DOIs
Publication statusPublished - 2005
Externally publishedYes
Event17th International Conference on Optical Fibre Sensors, OFS-17 - Bruges, Belgium
Duration: 23 May 200527 May 2005

Keywords

  • Coupled mode analysis
  • Electrostatic self-assembly
  • Nanosensors
  • Refractometer

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