Journal
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
Volume 71, Issue -, Pages -Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIM.2022.3157403
Keywords
Temperature measurement; Temperature sensors; Optical fibers; Optical fiber sensors; Silicon compounds; Pressure measurement; Optical interferometry; Fiber-optic sensor (FOS); high temperature; interferometric sensor; microstructured optical fiber; pressure sensor; pure silica optical fiber; simultaneous measurement of pressure and temperature; temperature compensation
Funding
- Australian Research Council Centre for Nanoscale BioPhotonics [CE14010003]
- Australian Government Research Training Program Scholarship
- Australian Research Council (ARC) [FT200100154]
- University of Adelaide
- Australian Research Council [FT200100154] Funding Source: Australian Research Council
Ask authors/readers for more resources
This study presents a high-temperature interferometric pressure sensor using a pure silica four-hole microstructured optical fiber. The asymmetric geometry of the fiber converts hydrostatic pressure into an interferometric shift. The sensor operates at high temperatures, and temperature compensation is achieved using a Fourier approach. Experimental results show that the sensor has a linear response, excellent stability, and a high detection limit.
We present a high-temperature interferometric pressure sensor using a simple-design and easy-to-fabricate pure silica four-hole novel microstructured optical fiber. The asymmetric geometry of the fiber allows hydrostatic pressure to induce stress at the optical fiber core, which converts to an interferometric shift. The large core of the fiber supports the propagation of several modes. Multimode interference created between different pairs of modes is used to sense the temperature and pressure change. The use of pure silica fiber is motivated by the ability of this fiber to operate up to high temperature as dopant diffusion is avoided. The sensor is demonstrated to measure pressure at a temperature up to 800 degrees C. We demonstrate temperature compensation using a Fourier approach to monitor different interference pairs and their phase response to pressure and temperature change. Experimental results show that the sensor has a linear response and excellent stability with a detection limit of 8.86 kPa at 800 degrees C temperature. This simple, compact, and potentially low-cost sensor is promising for harsh environment applications to improve quality control, operation efficiency, and safe working conditions.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available