High-precision fiber optic liquid level sensor based on fast Fourier amplitude demodulation in a specific range of spectrum

• Main Authors: Wang, Shun, Yang, Yaowen, Zhang, Liang, Mohanty, Lipi, Jin, Rui-Bo, Wu, Shun, Lu, Peixiang
• Other Authors: School of Civil and Environmental Engineering
• Format: Article
• Language: English
• Published: 2022
• Subjects: Engineering::Civil engineering; Liquid Level Sensor; Polarization-Maintaining Fiber
• Online Access: https://hdl.handle.net/10356/160083
• Institution: Nanyang Technological University

This study presents a fiber optic liquid level sensor (FOLLS) by acquiring information from the amplitude of spectral fast Fourier transform (FFT) in a specified narrow wavelength range. The sensing light path is simply formed by embedding a section of Panda-type polarization-maintaining fiber (PMF)...