Improvement of measuring range in fiber interferometric liquid level sensor by employing digital filter for mode selectivity

• Main Authors: Azmi, Asrul Izam, Abdullah, Ahmad Sharmi, Mohd. Noor, Muhammad Yusof, Ibrahim, Mohd. Haniff, Sheikh, Usman Ullah, Raja Ibrahim, Raja Kamarulzaman, Tan, Tao, Zhang, Jianzhong
• Format: Article
• Published: Wiley Periodicals, Inc. 2020
• Subjects: TK Electrical engineering. Electronics Nuclear engineering
• Online Access: http://eprints.utm.my/id/eprint/93764/; http://dx.doi.org/10.1002/mop.32408
• Institution: Universiti Teknologi Malaysia

A liquid level sensor system based on dual tapers all-fiber Mach-Zehnder interferometer incorporating digital filtering is proposed for extended measurement range. Digital filtering technique is employed to selectively isolate beating of a particular dominant cladding mode, resulting a more consiste...