Fiber-Optic Sensors for Measurements of Torsion, Twist and Rotation: A Review

Optical measurement of mechanical parameters is gaining significant commercial interest in different industry sectors. Torsion, twist and rotation are among the very frequently measured mechanical parameters. Recently, twist/torsion/rotation sensors have become a topic of intense fiber-optic sensor research. Various sensing Read More …

High-Order Fiber Bragg Grating Corrosion Sensor Based on the Detection of a Local Surface Expansion

This paper presents a fiber optic sensor for the detection of corrosion processes that occur on metal surfaces. In the proposed sensor design, a sensing fiber with an inscribed high-order Bragg grating is attached to the observed metal surface. A Read More …

An All-Fiber Fabry–Pérot Sensor for Emulsion Concentration Measurements

This paper describes a Fabry–Pérot sensor-based measuring system for measuring fluid composition in demanding industrial applications. The design of the sensor is based on a two-parametric sensor, which enables the simultaneous measurement of temperature and refractive index (RI). The system Read More …

A Microfluidic, Flow-Through, Liquid Reagent Fluorescence Sensor Applied to Oxygen Concentration Measurement

A concept of a microfluidic fluorescent chemical sensing system is presented and demonstrated as a sensor for measurement of dissolved oxygen in water. The system utilizes on-line mixing of a fluorescent reagent with the analyzed sample, while it measures the Read More …

Miniature All-Fiber Electric Current/Magnetic Field Sensor Based on Birefringence Induced in Magnetooptic Liquid

This work presents a compact fiber-integrated sensor designed for high-resolution measurement of electric currents and magnetic fields using a magneto-optic liquid microcell. The primary goal is to develop a miniature, customizable sensor capable of operating in challenging environments where electrical Read More …

Multi‑core fiber‑optic dual‑axis differential accelerometer with a broadly configurable operating range

This paper presents a miniature, dual-axis, widely tunable fiber-optic accelerometer based on a four-core fiber mechanically coupled to an inertial mass by the superelastic NiTi microwire. The proposed structure forms a compact spring–damper system with an adjustable eigenfrequency and acceleration Read More …

A short-range quasi-distributed strain and temperature sensing system utilizing a standard telecom laser diode

This article presents a short-range fiber-optic quasi-distributed sensing device suitable for strain and temperature measurement. The sensing assembly consists of an fs laser inscribed reference mirror and a sensing array of equidistantly positioned mirrors. Utilization of the reference mirror and Read More …