dual-core fiber; Fiber-optic sensors; interferometric fiber sensors; temperature sensing; Dual-core fibers; Fiber-optics; Fibre-optic sensor; Fluidic channels; In-fiber; Interferometric fiber sensors; Mach-Zehnder; Sensing arm; Silicone oil; Temperature sensing; Electronic, Optical and Magnetic Materials; Condensed Matter Physics; Computer Science Applications; Applied Mathematics; Electrical and Electronic Engineering
Abstract :
[en] In this paper, we proposed an in-fiber Mach-Zehnder temperature sensor based on a dual-core fiber (DCF) with one core as the sensing arm suspended in the centre fluidic channel of the DCF and the other core as the reference arm running eccentrically along the fiber. The fluidic channel was infiltrated with silicone oil. Temperature variations would change the refractive index of silicone oil and thus the effective index of the guided mode in the suspended core, thus shifting the interference spectra. The sensitivity of the sensor using a DCF infiltrated with ∼20 cm-long silicone oil was found to be as high as −1.42 nm/℃, comparable to those of the SPR fiber sensors and other interferometric sensors. The measuring range of the sensor was more than 120℃. The proposed sensor could be easily fabricated with good robustness and stability, which makes the sensor suitable for applications such as environment and architecture monitoring.
Disciplines :
Materials science & engineering
Author, co-author :
Ma, Shaoxin; Department of Physics, Shantou University, Shantou, China
Zhang, Yufei; Department of Physics, Shantou University, Shantou, China
Qiu, Haiming; Department of Physics, Shantou University, Shantou, China
Zhao, Chunyun; Department of Physics, Shantou University, Shantou, China
Hu, Xuehao ; Université de Mons - UMONS > Recherche > Service ERC Unit - Advanced Photonic
Qu, Hang; Department of Physics, Shantou University, Shantou, China
Language :
English
Title :
Fiber-optic Mach-Zehnder Temperature Sensor Based on Dual-Core Fiber
Publication date :
2023
Event name :
European Workshop on Optical Fibre Sensors (EWOFS 2023)
Event place :
Mons, Bel
Event date :
23-05-2023 => 26-05-2023
Main work title :
European Workshop on Optical Fibre Sensors, EWOFS 2023
Editor :
Wuilpart, Marc ; Université de Mons - UMONS > Faculté Polytechnique > Service d'Electromagnétisme et Télécommunications
Publisher :
SPIE
ISBN/EAN :
978-1-5106-6500-2
Peer reviewed :
Peer reviewed
Research unit :
F108 - Electromagnétisme et Télécommunications
Research institute :
Research Institute for Materials Science and Engineering
Funders :
engionic Fiber Optics GmbH et al. Multitel Innovation Centre NorthLab Photonics AB Telebrooks Optronics Teledyne SP Devices
Funding text :
The Fonds de la Recherche Scientifique (F.R.S.-FNRS) under the Postdoctoral Researcher grant (Chargéde Recherches) of Xuehao Hu; Science and Technology Department of Guangdong Province (No. 2022A1515012571)
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