Fiber-optic sensors have developed rapidly because of their excellent sensing
performances and abilities to detect in remote and harsh environments. However, on some …

This review focuses on the preparation methods and wide applications of optic fiber sensors
based on core-offset structure. Firstly, the classification and preparation methods of core …

This work reports on a novel in-fiber Mach-Zehnder interferometer (MZI) device which is able
to exploit the mode transition phenomena to tailor the sensitivity to external refractive index …

A novel fiber-optic sensor is demonstrated based on half-tapered single-mode-multimode-
single-mode fiber structure, which consists of the multimode interferometer (MMI) and Mach …

We propose a high-performance vector torsion sensor based on an in-fiber Mach-Zehnder
interferometer (MZI), which consists of a straight waveguide inscribed in the core-cladding …

An ultra-compact in-core-parallel-written fiber Bragg grating (FBG) and Mach–Zehnder
interferometer (MZI) for simultaneous measurement of strain and temperature is described …

A large lateral core-offset in-line fiber modal interferometer was proposed in order to avoid
the relative direction of the two core-offset joints affecting the interference performance. The …

A highly sensitive temperature and strain sensor cascaded with a fiber Lyot filter (FLF) and a
fiber Sagnac interferometer (FSI) is proposed in this paper. The temperature and strain …

We experimentally demonstrate a highly sensitive directional torsion sensor based on a
helical dual side-hole fiber (DSHF). The sensor is constructed by splicing a fraction of DSHF …

Fiber torsion sensor has been researched for many years due to its various structure and
sensitive response. In order to distinguish the torsion direction, fiber sensor still faces some …