Fabry-Perot; fiber-optic sensors; refractive index sensors; Vernier effect; Analytes; C-shaped; Fiber refractometer; Fiber segments; Fibre-optic sensor; Refractive index sensor; Shaped fibers; Single-mode fibers; Electronic, Optical and Magnetic Materials; Condensed Matter Physics; Computer Science Applications; Applied Mathematics; Electrical and Electronic Engineering
Abstract :
[en] We propose and experimentally demonstrate a fiber refractometer based on a C-shaped fiber and the Vernier effect. The sensor is fabricated by cascading a single mode fiber (SMF) pigtail together with a C-shaped fiber segment and another SMF segment. Thus, the C-shaped fiber would constitute an open cavity (sensing cavity) in which test analytes could be filled, while the SMF segment would constitute another reference cavity. Due to the similar optical path length of these two cavities, Vernier effect would be activated, thus forming spectral envelops in the reflection spectrum of the sensor. Variations in the refractive index (RI) of analytes would result in the shifts of the spectral envelops. Experiments are carried out in the characterization of the sensor measuring gaseous analytes. The sensitivity of the sensor is found to be ~37238 nm/RIU for gas RI measurement. The proposed sensor features the advantages such as ease of fabrication, extremely high sensitivity, capability of sensing of both gaseous and liquid analytes, small footprint, and good mechanical strength.
Disciplines :
Materials science & engineering
Author, co-author :
Zhang, Yufei; Department of Physics, Shantou University, Shantou, China
Ma, Shaoxin; Department of Physics, Shantou University, Shantou, China
Jiang, Junfang; Department of Physics, Shantou University, Shantou, China
Qu, Hang; Department of Physics, Shantou University, Shantou, China
Hu, Xuehao ; Université de Mons - UMONS > Faculté Polytechnique > Service d'Electromagnétisme et Télécommunications
Language :
English
Title :
Ultrasensitive fiber refractometer based on C-shaped fiber and Vernier effect
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 review/Selection committee :
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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