Upogib in torzija
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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…
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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…
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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…
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Microbend Point and Distributed Fiber Optic Corrosion Sensing
Corrosion-induced optical fiber microbending is demonstrated within this article as an efficient method for the design of sensors for the detection and localization of corrosion events on monitored metal surfaces. The proposed sensors were demonstrated…
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Miniature magneto-optic angular position sensor
This Letter describes a miniature Fabry–Perot, contactless, magneto-optic sensor for angular position measurement. The sensor utilizes a magneto-optic fluid comprising barium hexaferrite nanoplatelets that become birefringent in the presence of an external magnetic field and…
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A miniature fabry perot sensor for twist/rotation, strain and temperature measurements based on a four-core fiber
In this article, a novel miniature Fabry-Perot twist/rotation sensor using a four core fiber and quadruple interferometer setup is presented and demonstrated. Detailed sensor modeling, analytical evaluation and test measurement assessment were conducted in this…
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Quasi-distributed twist/torsion sensor
This paper presents a fiber-optic quasi-distributed in-line twist/rotation sensor. The presented sensor consists of a polarization maintaining lead-in fiber and series of in-line fiber polarizers with integrated semi-reflective mirrors that are interconnected by a standard…
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Miniature, all-fiber rotation sensor based on temperature compensated wave plate
This paper presents a miniature, all-fiber fiber optic twist/rotation sensor. The proposed sensor consists of polarization maintaining lead-in fiber (PMF), a short section of standard (fully circularly symmetric) single-mode fiber, which is exposed to twist/axial…
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In-line, fiber-optic polarimetric twist/torsion sensor
This letter presents an optical fiber twist/torsion sensor that utilizes dissimilar polarization-preserving characteristics of standard single-mode and high-birefringence fibers. When only one polarization mode of the highbirefringence fiber is excited, spatial orientation of the E-field…
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Polarimetric temperature sensor: extinction ratio and sensing length examination
We theoretically and experimentally investigated the influences of the sensing and lead fiber length, the extinction ratio of the input polarizer, and the coherence properties of the light source on polarimetric temperature measurements. We have…