Simultaneous Measurement of Liquid Level and Temperature Using High-Sensitivity Sensor Based on Etched Four-Core Fiber
This study proposes a dual-parameter sensor for liquid level and temperature based on etched four-core fiber (FCF) structure. The sensor employs a square four-core fiber, and its interference mechanism superimposes both multimode interference (MMI) and Mach-Zehnder interference (MZI). Owing to the absence of a central...