3D-Printed Tilt Sensor Based on an Embedded Two-Mode Fiber Interferometer

Authors:
Publisher website
Google Scholar
Abstract
A 3D-printed tilt fiber sensor using a two-mode interferometer (TMFI) as the sensing mechanism has demonstrated. The TMFI was constructed by splicing single-mode fibers (SMF-28s) at both ends of a two-mode (TMF) to generate a comb-like interference spectrum sensitive to bending. A 3D-printed cantilever with a attached to one end was used to induce bending as the structure was tilted and by embedding the TMFI onto the 3D cantilever, different tilt angles can be measured, as a the bending of the fiber. The TMFI exhibited a linear response towards the tilt angles, θ, with a responsivity of nm/degat negative θ (0 to -90°) and 5 × 10 -3 nm/deg positive θ (0 to 90°), respectively. The sensor was able to small angle changes in increments as small as 1° and it performs better than embedded FBG sensors. The tilt proposed has a small form factor and simple design, as well as being cost-effective and light-weight, thus showing significant potential for a variety of civil engineering applications.
Funding Information
  • University of Malaya (IF022-2020 (NEWTON), RU002-2020, RU011-2019, TOP100PRC)

This publication has 22 references indexed in Scilit: