Ultrasensitive vector bending sensor based on multicore optical fiber

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

Research output: Contribution to journalArticlepeer-review

115 Scopus citations


In this Letter, we demonstrate a compellingly simple directional bending sensor based on multicore optical fibers (MCF). The device operates in reflection mode and consists of a short segment of a three-core MCF that is fusion spliced at the distal end of a standard single mode optical fiber. The asymmetry of our MCF along with the high sensitivity of the supermodes of the MCF make the small bending on the MCF induce drastic changes in the supermodes, their excitation, and, consequently, on the reflected spectrum. Our MCF bending sensor was found to be highly sensitive (4094 pm/ deg ) to small bending angles. Moreover, it is capable of distinguishing multiple bending orientations.

Original languageEnglish (US)
Pages (from-to)832-835
Number of pages4
JournalOptics Letters
Issue number4
StatePublished - Feb 15 2016

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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