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Ester Catalano
Department of Engineering, Università della Campania Luigi Vanvitelli, Via Roma 29, 81031 Aversa, Italy

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Communication
Published: 26 July 2021 in Sensors
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We demonstrate the use of a graded-index perfluorinated optical fiber (GI-POF) for distributed static and dynamic strain measurements based on Rayleigh scattering. The system is based on an amplitude-based phase-sensitive Optical Time-Domain Reflectometry (ϕ-OTDR) configuration, operated at the unconventional wavelength of 850 nm. Static strain measurements have been carried out at a spatial resolution of 4 m and for a strain up to 3.5% by exploiting the increase of the backscatter Rayleigh coefficient consequent to the application of a tensile strain, while vibration/acoustic measurements have been demonstrated for a sampling frequency up to 833 Hz by exploiting the vibration-induced changes in the backscatter Rayleigh intensity time-domain traces arising from coherent interference within the pulse. The reported tests demonstrate that polymer optical fibers can be used for cost-effective multiparameter sensing.

ACS Style

Agnese Coscetta; Ester Catalano; Enis Cerri; Ricardo Oliveira; Lucia Bilro; Luigi Zeni; Nunzio Cennamo; Aldo Minardo. Distributed Static and Dynamic Strain Measurements in Polymer Optical Fibers by Rayleigh Scattering. Sensors 2021, 21, 5049 .

AMA Style

Agnese Coscetta, Ester Catalano, Enis Cerri, Ricardo Oliveira, Lucia Bilro, Luigi Zeni, Nunzio Cennamo, Aldo Minardo. Distributed Static and Dynamic Strain Measurements in Polymer Optical Fibers by Rayleigh Scattering. Sensors. 2021; 21 (15):5049.

Chicago/Turabian Style

Agnese Coscetta; Ester Catalano; Enis Cerri; Ricardo Oliveira; Lucia Bilro; Luigi Zeni; Nunzio Cennamo; Aldo Minardo. 2021. "Distributed Static and Dynamic Strain Measurements in Polymer Optical Fibers by Rayleigh Scattering." Sensors 21, no. 15: 5049.

Journal article
Published: 17 April 2019 in Fibers
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We have investigated, in a numerical and experimental way, a refractive index (RI) sensor based on surface plasmon resonance (SPR) in a silver-coated light-diffusing fiber (LDF). The experimental tests were conducted using water-glycerine mixtures with refractive indices ranging from 1.332 to 1.388. In the considered refractive index range, the experimental results show a sensitivity of the SPR wavelength to the outer medium’s RI ranging from 2600 to 4700 nm/RIU, which is larger than the sensitivity recently reported for a gold-coated LDF sensor (1200 to 4000nm/RIU). The silver-coated sensor is also shown to ensure a higher signal-to-noise ratio (SNR) compared to the gold-coated sensor.

ACS Style

Nunzio Cennamo; Luigi Zeni; Francesco Arcadio; Ester Catalano; Aldo Minardo. A Novel Approach to Realizing Low-Cost Plasmonic Optical Fiber Sensors: Light-Diffusing Fibers Covered by Thin Metal Films. Fibers 2019, 7, 34 .

AMA Style

Nunzio Cennamo, Luigi Zeni, Francesco Arcadio, Ester Catalano, Aldo Minardo. A Novel Approach to Realizing Low-Cost Plasmonic Optical Fiber Sensors: Light-Diffusing Fibers Covered by Thin Metal Films. Fibers. 2019; 7 (4):34.

Chicago/Turabian Style

Nunzio Cennamo; Luigi Zeni; Francesco Arcadio; Ester Catalano; Aldo Minardo. 2019. "A Novel Approach to Realizing Low-Cost Plasmonic Optical Fiber Sensors: Light-Diffusing Fibers Covered by Thin Metal Films." Fibers 7, no. 4: 34.

Technical note
Published: 15 August 2018 in Remote Sensing
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This work reports on the application of a distributed fiber-optic strain sensor for long-term monitoring of a railway tunnel affected by an active earthflow. The sensor has been applied to detect the strain distribution along an optical fiber attached along the two walls of the tunnel. The experimental results, relative to a two-year monitoring campaign, demonstrate that the sensor is able to detect localized strains, identify their location along the tunnel walls, and follow their temporal evolution.

ACS Style

Aldo Minardo; Ester Catalano; Agnese Coscetta; Giovanni Zeni; Lei Zhang; Caterina Di Maio; Roberto Vassallo; Roberto Coviello; Giuseppe Macchia; Luciano Picarelli; Luigi Zeni. Distributed Fiber Optic Sensors for the Monitoring of a Tunnel Crossing a Landslide. Remote Sensing 2018, 10, 1291 .

AMA Style

Aldo Minardo, Ester Catalano, Agnese Coscetta, Giovanni Zeni, Lei Zhang, Caterina Di Maio, Roberto Vassallo, Roberto Coviello, Giuseppe Macchia, Luciano Picarelli, Luigi Zeni. Distributed Fiber Optic Sensors for the Monitoring of a Tunnel Crossing a Landslide. Remote Sensing. 2018; 10 (8):1291.

Chicago/Turabian Style

Aldo Minardo; Ester Catalano; Agnese Coscetta; Giovanni Zeni; Lei Zhang; Caterina Di Maio; Roberto Vassallo; Roberto Coviello; Giuseppe Macchia; Luciano Picarelli; Luigi Zeni. 2018. "Distributed Fiber Optic Sensors for the Monitoring of a Tunnel Crossing a Landslide." Remote Sensing 10, no. 8: 1291.

Journal article
Published: 07 May 2018 in Optics Letters
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In this Letter, we demonstrate the possibility to measure the refractive index of a liquid, using the stimulating Brillouin scattering in a 3-cm-long side-polished optical fiber. In addition, we show that by depositing a high-refractive index layer on the polished surface the sensitivity of the Brillouin frequency shift (BFS) can be increased due to a higher penetration of the evanescent field in the outer medium. Experiments show a maximum BFS change of about 11 MHz when varying the refractive index of the external medium from 1 (air) to 1.402, and a BFS sensitivity to refractive index of about 293 MHz/RIU around 1.40.

ACS Style

Romeo Bernini; Gianluca Persichetti; Ester Catalano; Luigi Zeni; Aldo Minardo. Refractive index sensing by Brillouin scattering in side-polished optical fibers. Optics Letters 2018, 43, 2280 -2283.

AMA Style

Romeo Bernini, Gianluca Persichetti, Ester Catalano, Luigi Zeni, Aldo Minardo. Refractive index sensing by Brillouin scattering in side-polished optical fibers. Optics Letters. 2018; 43 (10):2280-2283.

Chicago/Turabian Style

Romeo Bernini; Gianluca Persichetti; Ester Catalano; Luigi Zeni; Aldo Minardo. 2018. "Refractive index sensing by Brillouin scattering in side-polished optical fibers." Optics Letters 43, no. 10: 2280-2283.

Journal article
Published: 30 October 2017 in IEEE Sensors Journal
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In this paper, we propose and demonstrate a new method to reconstruct the Brillouin frequency shift profile in high spatial resolution Brillouin optical frequency domain analysis (BOFDA) sensors. The method aims to compensate the distorting terms affecting BOFDA measurements, which originate from the modulation impressed on the acoustic wave involved in the scattering phenomenon. We show that these terms can be easily removed by applying a high-pass filter to the data acquired in the frequency-domain, at the cost of a degradation of the signal-to-noise ratio. A numerical analysis, as well as experimental tests carried out at 8-mm spatial resolution, validate the proposed technique.

ACS Style

Luigi Zeni; Ester Catalano; Agnese Coscetta; Aldo Minardo. High-Pass Filtering for Accurate Reconstruction of the Brillouin Frequency Shift Profile From Brillouin Optical Frequency Domain Analysis Data. IEEE Sensors Journal 2017, 18, 185 -192.

AMA Style

Luigi Zeni, Ester Catalano, Agnese Coscetta, Aldo Minardo. High-Pass Filtering for Accurate Reconstruction of the Brillouin Frequency Shift Profile From Brillouin Optical Frequency Domain Analysis Data. IEEE Sensors Journal. 2017; 18 (1):185-192.

Chicago/Turabian Style

Luigi Zeni; Ester Catalano; Agnese Coscetta; Aldo Minardo. 2017. "High-Pass Filtering for Accurate Reconstruction of the Brillouin Frequency Shift Profile From Brillouin Optical Frequency Domain Analysis Data." IEEE Sensors Journal 18, no. 1: 185-192.

Journal article
Published: 25 April 2017 in IEEE Sensors Journal
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The sensitivity of Brillouin Frequency Shift (BFS) to strain and temperature has been studied in a low-bend loss silica fiber, at two different wavelengths (850 and 1550nm). The results show that the ratio between strain sensitivity at the two wavelengths is different from the ratio between temperature sensitivity, which can be conveniently used for simultaneous and distributed measurement of these parameters using a single sensing element. Experimental results, carried out at 1-m spatial resolution, demonstrate the feasibility of the proposed method.

ACS Style

Aldo Minardo; Agnese Coscetta; Ester Catalano; Luigi Zeni. Simultaneous Strain and Temperature Measurements by Dual Wavelength Brillouin Sensors. IEEE Sensors Journal 2017, 17, 3714 -3719.

AMA Style

Aldo Minardo, Agnese Coscetta, Ester Catalano, Luigi Zeni. Simultaneous Strain and Temperature Measurements by Dual Wavelength Brillouin Sensors. IEEE Sensors Journal. 2017; 17 (12):3714-3719.

Chicago/Turabian Style

Aldo Minardo; Agnese Coscetta; Ester Catalano; Luigi Zeni. 2017. "Simultaneous Strain and Temperature Measurements by Dual Wavelength Brillouin Sensors." IEEE Sensors Journal 17, no. 12: 3714-3719.

Abstract
Published: 01 January 2017 in Proceedings
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Note: In lieu of an abstract, this is an excerpt from the first page.Excerpt In this paper, we investigate the capability of a Brillouin Optical Time-Domain Analysis

ACS Style

Aldo Minardo; Ester Catalano; Agnese Coscetta; Luigi Zeni. Exploiting Brillouin Sensors for Refractive Index Measurements. Proceedings 2017, 1, 818 .

AMA Style

Aldo Minardo, Ester Catalano, Agnese Coscetta, Luigi Zeni. Exploiting Brillouin Sensors for Refractive Index Measurements. Proceedings. 2017; 1 (8):818.

Chicago/Turabian Style

Aldo Minardo; Ester Catalano; Agnese Coscetta; Luigi Zeni. 2017. "Exploiting Brillouin Sensors for Refractive Index Measurements." Proceedings 1, no. 8: 818.