Cascaded MI and FPI Based Optical Fiber Sensor for Simultaneous High-Temperature and High-Pressure Monitoring
An optical fiber sensor based on Michelson interferometer (MI) cascaded with Fabry-Perot interferometer (FPI) is proposed for simultaneous monitoring of hightemperature and high-pressure. The MI comprises a tapered single-mode fiber (SMF) spliced with a section of no-core fiber (NCF), while the FPI cavity is formed by sealing the fiber MI into a silica capillary tube. The temperature and pressure can be detected by monitoring the spectral features of the MI and FPI, respectively. The experimental results demonstrate that the sensor achieves a temperature sensitivity of 42.95 pm/°C and a pressure sensitivity of -195.38 nm/MPa in a temperature range of 25–150°C and a pressure range of 0–35 MPa. The sensor has the advantages of high sensitivity, cost-effectiveness, and ease of preparation
Authors
- Yihai Chen
- Shijie Deng (ORCID: https://orcid.org/0000-0002-5468-8504)
- Chuanxin Teng (ORCID: https://orcid.org/0000-0003-4842-7540)
- Hongyun Xia (ORCID: https://orcid.org/0009-0007-6260-3666)
- Libo Yuan (ORCID: https://orcid.org/0000-0002-2425-4553)
- Xuehao Hu (ORCID: https://orcid.org/0000-0003-0239-6144)
- Yuting Zhang (ORCID: https://orcid.org/0000-0002-5890-4008)
Institutions
- University of Mons (BE)
- Institute for Advanced Study (DE)
- Guilin University of Electronic Technology (CN)
Publication Details
- Journal
- Journal of Lightwave Technology
- Published
- 2025-06-17
- DOI
- https://doi.org/10.1109/jlt.2025.3580821
- Citations
- 3
- Primary Topic
- Spectroscopy and Laser Applications
- Type
- article
- Field-Weighted Citation Impact
- 2.27