Supersensitive sensors based on multicore optical fibres

Joel Villatoro, Enrique Antonio-Lopez, Amy Van Newkirk, Joseba Zubia, Axel Schülzgen, Rodrigo Amezcua-Correa

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

1 Scopus citations


In this work, we demonstrate the use of particularly characterised multicore optical fibres (MCFs) to devise compact, compellingly simple, ultrasensitive interferometric sensors which are capable of sensing single or multiple physical parameters. Generally, our devices operate in reflection mode and consist of a few centimetres of MCF fusion spliced to standard single-mode optical fibre (SMF). The tools and instrumentation needed to fabricate our devices are a conventional fibre cleaver and a fusion splicing machine. We demonstrate a highly-sensitive bending sensor (inclinometer) with a MCF with three strongly coupled cores which is capable of distinguishing multiple bending or inclination orientations, and also a force sensor based on MCF with seven coupled cores. In both cases the devices are interrogated with a low-power LED and a miniature spectrum analyser. Bending or force on the MCF induces drastic changes of the supermodes, their excitation, and consequently, on the reflected spectrum (interference pattern).

Original languageEnglish (US)
Title of host publicationMicro-Structured and Specialty Optical Fibres IV
EditorsAlexis Mendez, Kyriacos Kalli
ISBN (Electronic)9781510601314
StatePublished - 2016
EventMicro-Structured and Specialty Optical Fibres IV - Brussels, Belgium
Duration: Apr 4 2016Apr 6 2016

Publication series

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


ConferenceMicro-Structured and Specialty Optical Fibres IV

All Science Journal Classification (ASJC) codes

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


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