Application of phosphate doped fibers for OFDR dosimetry
Results in Physics, 2016 We employ phosphate doped optical fibers for distributed dosimetry based on Optical Frequency Domain Reflectometry (OFDR) and demonstrate the effect of limited Integrated Insertion Loss Dynamic Range (ILDR) on the system performance.
M Wuilpart +2 more
exaly +4 more sources
An Optical Frequency Domain Reflectometer’s (OFDR) Performance Improvement via Empirical Mode Decomposition (EMD) and Frequency Filtration for Smart Sensing [PDF]
SensorsWe describe a method for reducing the cost of optical frequency domain reflectometer (OFDR) hardware by replacing two reference channels, including an auxiliary interferometer and a gas cell, with a single channel.
Yuri A Konstantinov +2 more
exaly +4 more sources
High-Resolution OFDR with All Grating Fiber Combining Phase Demodulation and Cross-Correlation Methods [PDF]
SensorsSpatial resolution is a critical parameter for optical frequency domain reflectometry (OFDR). Phase-sensitive OFDR (Φ-OFDR) measures strain by detecting phase variations between adjacent sampling points, having the potential to achieve the theoretical ...
Yanlin Liu +6 more
doaj +2 more sources
Implementation of a Length Gauge Based on Optical Frequency Domain Reflectometry (OFDR) [PDF]
SensorsOptical frequency domain reflectometry (OFDR) is a widely used method for measuring optical lengths to backscattering points in optical fibers and integrated optical chips.
Aleksey Shestakov +6 more
doaj +2 more sources
Performance Study of a Zirconia-Doped Fiber for Distributed Temperature Sensing by OFDR at 800 °C
Sensors, 2021 Optical Frequency Domain Reflectometry (OFDR) is used to make temperature distributed sensing measurements along a fiber by exploiting Rayleigh backscattering. This technique presents high spatial and high temperature resolutions on temperature ranges of
Patrick Bulot +2 more
exaly +3 more sources
OFDR Distributed Demodulation Optimization Algorithm Using Discrete-Time Analytic Signal Backscattered Rayleigh Spectrum [PDF]
SensorsWe propose a novel distributed demodulation optimization algorithm for optical frequency domain reflectometry (OFDR). This algorithm applies discrete-time analytic (DTA) signals to the Rayleigh backscattered signal (RBS) reconstruction.
Shuaipeng Wang +4 more
doaj +2 more sources
Optical Frequency-Domain Reflectometry Based Distributed Temperature Sensing Using Rayleigh Backscattering Enhanced Fiber [PDF]
Sensors, 2023 An innovative optical frequency-domain reflectometry (OFDR)-based distributed temperature sensing method is proposed that utilizes a Rayleigh backscattering enhanced fiber (RBEF) as the sensing medium.
Ziyi Lu +3 more
doaj +2 more sources
Analysis of the Influence of Macro-Bending Loss in Single-Mode Optical Fibers on OFDR Signal Quality [PDF]
SensorsThis study investigates the influence of optical loss induced by the macro-bending of optical fibers on the signal quality of an optical frequency-domain reflectometry (OFDR) system.
Xiaoxi Qu +5 more
doaj +2 more sources
Study of the Feasibility of Decoupling Temperature and Strain from a ϕ-PA-OFDR over an SMF Using Neural Networks [PDF]
Sensors, 2023 Despite several existing techniques for distributed sensing (temperature and strain) using standard Single-Mode optical Fiber (SMF), compensating or decoupling both effects is mandatory for many applications. Currently, most decoupling techniques require
Andrés Pedraza +4 more
doaj +2 more sources
Monitoring soil cracking using OFDR-based distributed temperature sensing framework
GeodermaSoil cracking induced by extreme drought represents a widespread natural phenomenon occurring across the earth surface, capable of triggering multiple weakening mechanisms within surface soils, potentially leading to the instability and failure of slopes
Jin-Jian Xu +2 more
exaly +3 more sources