optical fiber grating sensors
An Interrogation System for Spectrally Multiplexed Fiber Bragg Grating Sensors
... years, fiber optic sensors particularly those based on Fiber Bragg Grating (FBG) have been proved to be a potentially excellent technique for real-time monitoring of these ...waveguide ...
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Differential phase tracking applied to Bragg gratings in multicore fiber for high accuracy curvature measurement
... a fiber-optic Mach-Zehnder interferometer (MZI) with a 3.6 mm optical path imbalance, which is smaller than the coherence length of the light reflected from a sensor ...MCF. Fiber-optic circulators ...
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An optical fiber Bragg grating tactile sensor
... Tactile sensors are needed for many emerging robotic and telepresence applications such as key- hole surgery and robot operation in unstructured ...using optical methods such as ...
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FIBER OPTIC SENSORS FOR HEALTH MONITORING OF CIVIL ENGINEERING STRUCTURES
... observed fiber photosensitivity in germanium-doped silica fiber in 1978 ...the Fiber Bragg Grating (FBG), have been introduced. Fiber Bragg Gratings are periodic structures that are ...
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Efficient large-scale multiplexing of fiber Bragg grating and fiber Fabry-Perot sensors for structural health monitoring applications
... strain sensors capable of generating a strain map of the structure, (ii) a shape correcting panel containing an array of shape or curvature sensors and (iii) a health monitoring system based on acoustic ...
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Damage Assessment in Composites using Fiber Bragg Grating Sensors
... coated optical fibers were fabricated to ensure the fibers survived the fabrication procedure, as listed in table ...the fiber during the specimen ...
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The Design of Bending Long Period of Photonic Crystal Fiber Grating Sensors
... crystal fiber grating is a new passive material with many unique light transmission characteristics, it may have special applications in optical fiber communication and optical ...
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In-situ Cure Monitoring of a Self-Healing Composite Sandwich Structure Using Fiber Bragg Grating Sensors.
... these sensors is that the gratings on an LPG are spaced apart by a much wider gap (typically from 100 μm to 1 ...the grating transmission spectrum (James et ...the optical fiber such that the ...
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Strain Measurement Using Embedded Fiber Bragg Grating Sensors Inside an Anchored Carbon Fiber Polymer Reinforcement Prestressing Rod for Structural Monitoring
... of sensors was illuminated by light from a broadband source and detected using an optical spectrometer containing a Fabry–Perot tuneable filter that scans the narrow band light from the source and sweeps ...
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Comparison of water level measurement performance for two different types of diaphragm using fiber bragg grating based optical sensors
... of sensors has the potential application in explosive liquids with safe ...electronic sensors, there are possibilities of generating of heat and electric spark with its components[6], additionality they ...
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Performance Analysis of Fiber Optical Communication using Fiber Bragg Grating as Dispersion Compensator
... In fiber optic communication is transmitted pulses of light through an optical fiber, where the light forms an electromagnetic carrier wave that is modulated to transport ...the fiber optic is ...
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Hybrid Fibre Optic Sensor Network for Real-time High Temperature Performance Monitoring of Steel Structures
... period fiber gratings (LPFGs) become the best ...long-period grating (LPG) written in a photonic crystal fiber ...hybrid fiber-optic sensor consisting of a LPFG and a micro EFPI which can ...
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Non-invasive respiratory monitoring using long-period fiber grating sensors
... and optical fiber-grating sensing scheme that permits monitoring of lung volume through a real-time measurement of tidal and minute ...single fiber- grating sensor and a monochromatic ...
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High-speed, solid state, interferometric interrogator and multiplexer for fiber Bragg grating sensors
... An alternative, highly precise peak detection technique employing interferometry is often used, as described by Kersey et al [8]. Interferometric interrogation, while offering the highest resolution of all techniques, is ...
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Fiber bragg grating sensors for pH and humidity measurement
... optical fiber which allows the measurement of measurand at different places on a large structure to be relatively easily ...the grating parameter to temperature and ...the grating parameter to ...
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Optical Fiber Sensing Technology: Basics, Classifications and Applications
... Optical fiber sensors are the optimal choice for monitoring environmental changes; they offer many advantages compared to traditional electronic sensors, such as increased sensitivity and ...
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Application of Fractal Theory in Brick Concrete Structural Health Monitoring
... FBG sensors collect meet the fractal characteristics, but D, piecewise fractal dimension, has a big fluctuation, then variable dimension frac- tal can be a predictive model to monitor brick-concrete buildings, and ...
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Self-Monitoring Fiber Reinforced Polymer Retrofits
... Since the proposed self-monitoring FRP system is based on a multi-layer configuration of various materials, the stress/strain transfer between the FRP and sensor layers is expected to be complex. Although finite element ...
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An Improved Optical Communication System Using Fiber Bragg Grating In EDWA
... Due to conventional EDWA has intrinsic non-uniform gain, the problem will occur during transmission when number of channel increases and not to a single channel. To overcome this problem, the usage Bragg technology is ...
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Optical Pulse Compression and its Effects Using Fiber Bragg Grating
... The optical pulse compression using FBGs with exponentially decreasing second-order dispersion allows nearly pedestal-free pulse compression in a short length, leading to a novel all-fiber compression ...
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