Sensing characteristics of hollow-core photonic crystal fibre modal interferometers

S. H. Aref, R. Amezcua-Correa, J. P. Carvalho, O. Frazão, P. Caldas, J. L. Santos, F. M. Araújo, H. Latifi, F. Farahi, L. A. Ferreira, J. C. Knight

Research output: Chapter or section in a book/report/conference proceedingChapter in a published conference proceeding


In this work, sensitivity to strain, temperature and curvature of a sensor relying on modal interferometry in hollow-core photonic crystal fibre is studied. The sensing structure is simply a piece of hollow-core fibre connected in both ends to standard single mode fibre. An interference pattern that is associated to the interference of the light that propagates in the hollow core fundamental mode with light that propagates in other modes is observed. The phase of this interference pattern changes with the measurand interaction, which is the basis for considering this structure for sensing. The phase recovery is performed using a white light interferometric technique.

Original languageEnglish
Title of host publication20th International Conference on Optical Fibre Sensors
ISBN (Print)9780819478146
Publication statusPublished - 17 Nov 2009
Event20th International Conference on Optical Fibre Sensors - Edinburgh, UK United Kingdom
Duration: 5 Oct 20099 Oct 2009

Publication series

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


Conference20th International Conference on Optical Fibre Sensors
Country/TerritoryUK United Kingdom


  • Fibre sensors
  • Hollow-core photonic crystal fibre
  • White light interferometry

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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