Attuned Low Limit of Detection No-Core Fiber-Based High-Performance Mach–Zehnder Interferometer Sensor for Acetone Vapor Monitoring
ABSTRACT This article proposes an optical fiber sensor based on a high-performance Mach–Zehnder interferometer (MZI), using a piece of no-core fiber (NCF) spliced at both ends with single-mode fibers. Two attuned NCF pieces were adjusted to the dimensions of 30 µm and 60 µm in diameters, with lengths of 3 cm and 5 cm,...