Grating-assisted narrowband cladding mode excitation in photonic crystal fibers for surface refractometry

Olga Rusyakina, Tigran Baghdasaryan, Karima Chah, Pawel Mergo, Krzysztof Poturaj, Hugo Thienpont, Christophe Caucheteur, Francis Berghmans, Thomas Geernaert

Research output: Chapter in Book/Report/Conference proceedingConference paper

Abstract

We report on highly reflective fiber Bragg gratings in photonic crystal fibers (PCF) that excite two types of cladding mode resonances. We consider two hexagonal lattice PCF structures with a similar air-filling fraction (0.4) but different lattice pitch values (2.5 and 3.6 μm). We demonstrate both experimentally and numerically that the lattice parameters of the microstructure influence the spectral location of the resonances and the spectral span that they occupy. For the PCF with the lattice pitch of 2.5 μm, we demonstrate its application for surface plasmon-enhanced refractometry of waterbased solutions with potential for biosensing applications.
Original languageEnglish
Title of host publicationGrating-assisted narrowband cladding mode excitation in photonic crystal fibers for surface refractometry
EditorsFrancis Berghmans, Ioanna Zergioti
PublisherSPIE
Pages121390Y-1-121390Y-7
Number of pages7
Volume12139
ISBN (Electronic)9781510651548
ISBN (Print)978-1-5106-5154-8
DOIs
Publication statusPublished - 17 May 2022
EventSPIE Photonics Europe 2022 - Strasbourg, France
Duration: 3 Apr 20227 Apr 2022
https://spie.org/conferences-and-exhibitions/photonics-europe?SSO=1

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12139
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceSPIE Photonics Europe 2022
CountryFrance
CityStrasbourg
Period3/04/227/04/22
Internet address

Keywords

  • fiber Bragg grating
  • photonic crystal fiber
  • cladding mode
  • optical spectrum
  • refractive index measurement
  • refractometry
  • surface plasmon resonance
  • fiber optic sensor

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