Distributed Optical Fiber Sensors Based on Optical Frequency Domain Reflectometry: A review

Ding, Zhenyang; Wang, Chenhuan; Liu, Kun; Jiang, Junfeng; Yang, Di; Pan, Gang; Ze-lin, PU; Liu, Tiegen

doi:10.3390/s18041072

Cited by 224 publications

(88 citation statements)

References 73 publications

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“…The Rayleigh scattering profile is measured again when the fiber is subjected to mechanical strain or temperature perturbations and subsequently both data sets are divided into small segments that are Fourier transformed into the frequency domain. By performing a cross-correlation operation between the reference and perturbed states, a spectral shift in the correlation peak can be found which can be then calibrated to strain or temperature changes (Ding et al, 2018). The principle of OFDR of Rayleigh backscattering is illustrated in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

Crack monitoring in reinforced concrete beams by distributed optical fiber sensors

Berrocal

Fernandez

Rempling

2020

Structure and Infrastructure Engineering

114

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This paper investigates the use of distributed optical fiber sensors (DOFS) based on Optical Frequency Domain Reflectometry of Rayleigh backscattering for Structural Health Monitoring purposes in civil engineering structures. More specifically, the results of a series of laboratory experiments aimed at assessing the suitability and accuracy of DOFS for crack monitoring in reinforced concrete members subjected to external loading are reported. The experiments consisted on three-point bending tests of concrete beams, where a polyamide-coated optical fiber sensor was bonded directly onto the surface of an unaltered reinforcement bar and protected by a layer of silicone. The strain measurements obtained by the DOFS system exhibited an accuracy equivalent to that provided by traditional electrical foil gauges. Moreover, the analysis of the high spatial resolution strain profiles provided by the DOFS enabled the effective detection of crack formation. Furthermore, the comparison of the reinforcement strain profiles with measurements from a digital image correlation system revealed that determining the location of cracks and tracking the evolution of the crack width over time were both feasible, with most errors being below ±3 cm and ±20 mm, for the crack location and crack width, respectively. ARTICLE HISTORY

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Section: Introductionmentioning

confidence: 99%

Crack monitoring in reinforced concrete beams by distributed optical fiber sensors

Berrocal

Fernandez

Rempling

2020

Structure and Infrastructure Engineering

114

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“…Accordingly, the elastic behavior of thin films can be measured (potential application in garments). Various approaches of optical frequency domain reflectometry are reviewed in [6]. The latter systems are rather complex and are not yet applied widely.…”

Section: Fibers and Waveguides Without Structurementioning

confidence: 99%

Critical assessment of relevant methods in the field of biosensors with direct optical detection based on fibers and waveguides using plasmonic, resonance, and interference effects

Gauglitz

2020

Anal Bioanal Chem

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Direct optical detection has proven to be a highly interesting tool in biomolecular interaction analysis to be used in drug discovery, ligand/receptor interactions, environmental analysis, clinical diagnostics, screening of large data volumes in immunology, cancer therapy, or personalized medicine. In this review, the fundamental optical principles and applications are reviewed. Devices are based on concepts such as refractometry, evanescent field, waveguides modes, reflectometry, resonance and/or interference. They are realized in ring resonators; prism couplers; surface plasmon resonance; resonant mirror; Bragg grating; grating couplers; photonic crystals, Mach-Zehnder, Young, Hartman interferometers; backscattering; ellipsometry; or reflectance interferometry. The physical theories of various optical principles have already been reviewed in detail elsewhere and are therefore only cited. This review provides an overall survey on the application of these methods in direct optical biosensing. The "historical" development of the main principles is given to understand the various, and sometimes only slightly modified variations published as "new" methods or the use of a new acronym and commercialization by different companies. Improvement of optics is only one way to increase the quality of biosensors. Additional essential aspects are the surface modification of transducers, immobilization strategies, selection of recognition elements, the influence of non-specific interaction, selectivity, and sensitivity. Furthermore, papers use for reporting minimal amounts of detectable analyte terms such as value of mass, moles, grams, or mol/L which are difficult to compare. Both these essential aspects (i.e., biochemistry and the presentation of LOD values) can be discussed only in brief (but references are provided) in order to prevent the paper from becoming too long. The review will concentrate on a comparison of the optical methods, their application, and the resulting bioanalytical quality.

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“…Each section of an optical fiber is regarded as an individual sensor; hence, a complete optical fiber is a continuous system of multiple sensors. 17 The type of OFDR system 18,19 is ODSI-A, and the manufacturer is Luna Innovations Incorporated, USA, and the adjustable harmonic length interferometry technology used in the distributed optical fiber sensing system enables the measurement of distributed strain to have millimeter-level spatial resolution on a standard optical fiber that is 60-m long, and the measurement accuracy of strain can reach 6 1 me.…”

Section: Optical Frequency-domain Reflectometry Optical Fiber-sensingmentioning

confidence: 99%

Applications of optical frequency-domain reflectometry technology in strain-deformed configuration conversion of structural surface deformed configuration measurement

Zhang

Sun

Zhang

et al. 2019

International Journal of Distributed Sensor Networks

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In this study, the conversion relation between deformed configuration and strain during structural monitoring was analyzed based on the basic mechanics principle of materials. A distributed fiber optic measurement system was used to measure the accurate values of structural surface strain, and then calculate the intensity of surface-deformed configuration further. An optical fiber was attached to the surface of a flexible steel ruler, and the generated strain data were used to precisely measure the endpoint-deformed configuration of the ruler. Furthermore, the calculated deformed configuration was calculated and compared with the actual deformed configuration. It was found that the curves of calculated deformed configuration basically coincided (with a relative error of less than 0.6%) with the curves of actual deformed configuration.

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Distributed Optical Fiber Sensors Based on Optical Frequency Domain Reflectometry: A review

Cited by 224 publications

References 73 publications

Crack monitoring in reinforced concrete beams by distributed optical fiber sensors

Crack monitoring in reinforced concrete beams by distributed optical fiber sensors

Critical assessment of relevant methods in the field of biosensors with direct optical detection based on fibers and waveguides using plasmonic, resonance, and interference effects

Applications of optical frequency-domain reflectometry technology in strain-deformed configuration conversion of structural surface deformed configuration measurement

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