Fibre Bragg grating inscription into a seven core fibre and its application as a vector bending sensor

Namita Sahoo; Weijia Bao; Shen Liu; Yidong Tan; Kaiming Zhou; Lin Zhang

doi:10.1117/12.2589063

Fibre Bragg grating inscription into a seven core fibre and its application as a vector bending sensor

Namita Sahoo^*, Weijia Bao, Shen Liu, Yidong Tan, Kaiming Zhou, Lin Zhang

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › peer-review

Abstract

This paper demonstrates a highly effective method for fibre Bragg grating (FBG) inscription into a seven core fibre (7CF) and its application as an effective vector bending sensor. The development of multicore fibres (MCFs) and enabling the fabrication of FBGs into them result in a solution for multi-parameter measurements such as temperature/strain/bending/twist. The FBG in the central core of 7CF is on the neutral axis and therefore it is sensitive only to thermal and insensitive to deformational change, whereas the FBGs in the none-central cores that are evenly distributed over the 7CF cross-section can facilitate the measurement of structure deformation, such as bending, loading and twist. Furthermore, the FBGs in different cores respond to the physical perturbations differently in various orientations, offering vector sensing to measure both amplitude and direction of the structure change. The 7CF-FBG sensors are highly applicable for mechanical structures and flexible medical instruments.

Original language	English
Article number	117720O
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	11772
DOIs	https://doi.org/10.1117/12.2589063
Publication status	Published - 18 Apr 2021
Event	Optical Sensors 2021 - Virtual, Online, Czech Republic Duration: 19 Apr 2021 → 23 Apr 2021

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Copyright 2021 SPIE. One print or electronic copy may be made for personal use only. Systematic reproduction, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

Keywords

Curvature sensing
Fibre Bragg grating
Multicore fibre
Twist sensing
Vector sensors

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10.1117/12.2589063

Fibre Bragg grating inscription into a seven core fibre
Copyright 2021 SPIE. One print or electronic copy may be made for personal use only. Systematic reproduction, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
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abstract = "This paper demonstrates a highly effective method for fibre Bragg grating (FBG) inscription into a seven core fibre (7CF) and its application as an effective vector bending sensor. The development of multicore fibres (MCFs) and enabling the fabrication of FBGs into them result in a solution for multi-parameter measurements such as temperature/strain/bending/twist. The FBG in the central core of 7CF is on the neutral axis and therefore it is sensitive only to thermal and insensitive to deformational change, whereas the FBGs in the none-central cores that are evenly distributed over the 7CF cross-section can facilitate the measurement of structure deformation, such as bending, loading and twist. Furthermore, the FBGs in different cores respond to the physical perturbations differently in various orientations, offering vector sensing to measure both amplitude and direction of the structure change. The 7CF-FBG sensors are highly applicable for mechanical structures and flexible medical instruments.",

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author = "Namita Sahoo and Weijia Bao and Shen Liu and Yidong Tan and Kaiming Zhou and Lin Zhang",

note = "Copyright 2021 SPIE. One print or electronic copy may be made for personal use only. Systematic reproduction, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. ; Optical Sensors 2021 ; Conference date: 19-04-2021 Through 23-04-2021",

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AU - Sahoo, Namita

AU - Bao, Weijia

AU - Liu, Shen

AU - Tan, Yidong

AU - Zhou, Kaiming

AU - Zhang, Lin

N1 - Copyright 2021 SPIE. One print or electronic copy may be made for personal use only. Systematic reproduction, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

PY - 2021/4/18

Y1 - 2021/4/18

N2 - This paper demonstrates a highly effective method for fibre Bragg grating (FBG) inscription into a seven core fibre (7CF) and its application as an effective vector bending sensor. The development of multicore fibres (MCFs) and enabling the fabrication of FBGs into them result in a solution for multi-parameter measurements such as temperature/strain/bending/twist. The FBG in the central core of 7CF is on the neutral axis and therefore it is sensitive only to thermal and insensitive to deformational change, whereas the FBGs in the none-central cores that are evenly distributed over the 7CF cross-section can facilitate the measurement of structure deformation, such as bending, loading and twist. Furthermore, the FBGs in different cores respond to the physical perturbations differently in various orientations, offering vector sensing to measure both amplitude and direction of the structure change. The 7CF-FBG sensors are highly applicable for mechanical structures and flexible medical instruments.

AB - This paper demonstrates a highly effective method for fibre Bragg grating (FBG) inscription into a seven core fibre (7CF) and its application as an effective vector bending sensor. The development of multicore fibres (MCFs) and enabling the fabrication of FBGs into them result in a solution for multi-parameter measurements such as temperature/strain/bending/twist. The FBG in the central core of 7CF is on the neutral axis and therefore it is sensitive only to thermal and insensitive to deformational change, whereas the FBGs in the none-central cores that are evenly distributed over the 7CF cross-section can facilitate the measurement of structure deformation, such as bending, loading and twist. Furthermore, the FBGs in different cores respond to the physical perturbations differently in various orientations, offering vector sensing to measure both amplitude and direction of the structure change. The 7CF-FBG sensors are highly applicable for mechanical structures and flexible medical instruments.

KW - Curvature sensing

KW - Fibre Bragg grating

KW - Multicore fibre

KW - Twist sensing

KW - Vector sensors

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ER -

Fibre Bragg grating inscription into a seven core fibre and its application as a vector bending sensor

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