A strain reflection-based fiber optic sensor using thin core and standard single-mode fibers

D. Jauregui-Vazquez, J.P. Korterik, C.E. Osornio-Martinez, J.M. Estudillo-Ayala, H.L. Offerhaus, J.A. Alvarez-Chavez*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

6 Citations (Scopus)
43 Downloads (Pure)


We propose and demonstrate a fiber optic strain sensor based on a simple splice between a thin core fiber and a piece of conventional single-mode fiber. Mode dispersion generates an interference reflection spectrum sensitive to strain and temperature. The sensor offers a competitive strain sensitivity of 2.4 pm/ɛμɛ, good linearity (R2=0.9969), and a cursory repeatability analysis yielded variation. The thermal studies indicate minimal cross-sensitivity (2.9 ɛμɛ/°C). The sensor offers a simple implementation without any intricate manufacturing.
Original languageEnglish
Article number128659
JournalOptics communications
Early online date18 Jun 2022
Publication statusPublished - 1 Nov 2022


  • UT-Hybrid-D
  • Core mismatch
  • Reflection based sensors
  • Fiber based sensors
  • Strain

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