Multipoint pressure sensing at up to 900 °C using a fiber optic multimode interferometer
Date
2023
Authors
Reja, M.I.
Nguyen, L.V.
Ebendorff-Heidepriem, H.
Warren-Smith, S.C.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Journal article
Citation
Optical Fiber Technology, 2023; 75:103157-1-103157-6
Statement of Responsibility
Mohammad Istiaque Reja, Linh V. Nguyen, Heike Ebendorff-Heidepriem, Stephen C. Warren-Smith
Conference Name
Abstract
We demonstrate a multipoint optical fiber pressure sensor for high temperature operation using multimode interference. Each sensing element consists of a four-hole asymmetric multimode fiber acting as the pressure sensing fiber, spliced between two standard polarization-maintaining single mode fibers. Multiple sensing elements are serially connected for multipoint pressure sensing and demultiplexing is achieved using Fourier analysis. The spatial frequency associated with each sensing element is separated by having distinct optical path lengths. The pure silica material of the sensing fiber enables high-temperature operation. As a proof of concept, we demonstrate two-point pressure sensing at a temperature up to 900 ◦C with negligible crosstalk between the sensing elements and good stability. Our demonstrated sensor has potential applications in heavy industry where spatially resolved measurements of pressure at high temperature may lead to improvements in efficiency and safety.
School/Discipline
Dissertation Note
Provenance
Description
Available online 29 November 2022
Access Status
Rights
© 2022 Elsevier Inc. All rights reserved.