Advances in multicore fiber grating sensors

Z Zhao, Y Dang, M Tang - Photonics, 2022 - mdpi.com
In recent years, multicore fiber (MCF) has attracted increasing interest for sensing
applications, due to its unique fiber structure of multiple parallel cores in a single fiber …

Soft curvature sensors for joint angle proprioception

RK Kramer, C Majidi, R Sahai… - 2011 IEEE/RSJ …, 2011 - ieeexplore.ieee.org
We introduce a curvature sensor composed of a thin, transparent elastomer film
(polydimethylsiloxane, PDMS) embedded with a microchannel of conductive liquid (eutectic …

Ultrasensitive vector bending sensor based on multicore optical fiber

J Villatoro, A Van Newkirk, E Antonio-Lopez, J Zubia… - Optics Letters, 2016 - opg.optica.org
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 …

Two-dimensional vector bending sensor based on seven-core fiber Bragg gratings

M Hou, K Yang, J He, X Xu, S Ju, K Guo, Y Wang - Optics Express, 2018 - opg.optica.org
We demonstrated a two-dimensional vector-bending sensor by use of fiber Bragg gratings
(FBGs) inscribed in a homogeneous seven-core fiber. Seven FBGs were simultaneously …

Long period grating in multicore optical fiber: an ultra-sensitive vector bending sensor for low curvatures

P Saffari, T Allsop, A Adebayo, D Webb, R Haynes… - Optics Letters, 2014 - opg.optica.org
Long period grating was UV inscribed into a multicore fiber consisting of 120 single mode
cores. The multicore fiber that hosts the grating was fusion spliced into a single mode fiber at …

Effects of curvature on flexible Bragg Grating in off-axis core: Theory and experiment

F Anelli, A Annunziato, M Godfrey… - Journal of Lightwave …, 2023 - opg.optica.org
A high curvature flexible Bragg grating, in planar technology, is designed, fabricated and
experimentally characterized by employing silica glass. The curvature sensing mechanism …

Fiber Bragg gratings in heterogeneous multicore fiber for directional bending sensing

H Zhang, Z Wu, PP Shum, R Wang, XQ Dinh… - Journal of …, 2016 - iopscience.iop.org
We present the fabrication of fiber Bragg gratings (FBGs) in a trench-assisted
heterogeneous multicore fiber (MCF). Two obviously different Bragg reflection peaks are …

Ambient refractive index-independent bending vector sensor based on seven-core photonic crystal fiber using lateral offset splicing

Z Ou, Y Yu, P Yan, J Wang, Q Huang, X Chen, C Du… - Optics express, 2013 - opg.optica.org
A novel, simple, and compact optical fiber directional bending vector sensor based on Mach-
Zehnder interferometer (MZI) is proposed and experimentally demonstrated. The device …

Fiber-optical grating sensors for wind turbine blades: a review

L Glavind, IS Olesen, BF Skipper… - Optical …, 2013 - spiedigitallibrary.org
With the rapid growth of wind turbines and focus on maintenance costs structural
measurements are becoming essential. Fiber-optical sensors have physical properties that …

Shape tracking of a dexterous continuum manipulator utilizing two large deflection shape sensors

H Liu, A Farvardin, R Grupp, RJ Murphy… - IEEE sensors …, 2015 - ieeexplore.ieee.org
Dexterous continuum manipulators (DCMs) can largely increase the reachable region and
steerability for minimally and less invasive surgery. Many such procedures require the DCM …