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Few-layer MOS2-deposited flexible side-polished fiber Bragg grating bending sensor for pulse detection

  • Cheng Li*
  • , Xiaobin Peng
  • , Chao Wang
  • , Shaoqing Cao
  • , Hui Zhang
  • *Corresponding author for this work
  • Beihang University
  • Wuhan University
  • Shenzhen University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We demonstrate a flexible side-polished fiber Bragg grating (FBG)-based bending sensor involving the deposition of MoS2 onto the FBG fiber core, with a D-shaped zone of ∼54 μm depth and ∼15 mm length. The MoS2 overlay could enable the sensor a higher sensitivity to bending strain because of the overlay-induced additional refractive index changes in the evanescent field interaction with fiber gratings. The bending strain test shows that the developed sensor can achieve one order of wavelength shift higher than that of conventional bare FBG at larger bending deformation. Furthermore, the extracted subtle wrist pulse signal validates the great potential of MoS2-based side-polished fibers as wearable sensors for human activity detection.

Original languageEnglish
Title of host publicationTRANSDUCERS 2017 - 19th International Conference on Solid-State Sensors, Actuators and Microsystems
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2007-2010
Number of pages4
ISBN (Electronic)9781538627310
DOIs
StatePublished - 26 Jul 2017
Event19th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2017 - Kaohsiung, Taiwan, Province of China
Duration: 18 Jun 201722 Jun 2017

Publication series

NameTRANSDUCERS 2017 - 19th International Conference on Solid-State Sensors, Actuators and Microsystems

Conference

Conference19th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2017
Country/TerritoryTaiwan, Province of China
CityKaohsiung
Period18/06/1722/06/17

Keywords

  • fiber Bragg grating
  • MoS film
  • optical fiber bending sensor
  • pulse detection
  • side-polished fiber

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