With the oil and gas industry growing rapidly, increasing the yield and profit require
advances in technology for cost-effective production in key areas of reservoir exploration …

A review for optical fiber bending sensors is presented. The article mainly focuses on the
measurement methods of the structure bending. Firstly, the different optical fiber bending …

A simple, compact, and highly sensitive optical fiber directional bend sensor is presented.
This device consists of a lateral-offset splicing joint and an up-taper formed through …

We present the fabrication of fiber Bragg gratings (FBGs) in a trench-assisted
heterogeneous multicore fiber (MCF). Two obviously different Bragg reflection peaks are …

A compact optical fiber Mach–Zehnder interferometer (MZI) is proposed and experimentally
demonstrated for simultaneous measurement of temperature and strain or temperature and …

A highly sensitive curvature sensor based on asymmetrical twin core fiber (TCF) and
multimode fiber (MMF) is proposed and experimentally demonstrated. By applying the …

We demonstrated a compact and highly-sensitive curvature sensor based on a Mach-
Zehnder interferometer created in a photonic crystal fiber. Such a Mach-Zehnder …

In this review paper some recent advances on optical fiber sensors are reported. In
particular, fiber Bragg grating (FBG), long period gratings (LPGs), evanescent field and …

An optical fiber curvature sensor based on a twisted multimode fiber (MMF) sandwiched
between two single-mode fibers (SMF) is proposed and investigated theoretically and …

A highly sensitive curvature sensor based on core-offset splicing is proposed and
demonstrated. The whole fabrication process is quite simple and the sensor head is cost …