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Your search keyword '"Angeliki Zafeiropoulou"' showing total 5 results
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5 results on '"Angeliki Zafeiropoulou"'

1. D-shaped multicore fibre and its application in curvature monitoring with Brillouin Optical Time-Domain Reflectometry

Author

Gilberto Brambilla, Ali Masoudi, Apostolos Zdagkas, L.J. Cooper, and Angeliki Zafeiropoulou

Subjects
Brillouin zone, Mathematics::Algebraic Geometry, Materials science, Optics, Position (vector), Brillouin scattering, business.industry, Bending, Time domain, Twist, Curvature, Reflectometry, business
Abstract

A D-shaped 7-core fibre is used for curvature sensing with a Brillouin Optical Time-Domain Reflectometry setup. The preferential bending of the D-shaped fibre, com- pensates for its twist, eliminating the need for manually correcting the fibre’s position.

Published
2021

2. Curvature sensing with a D-shaped multicore fibre and Brillouin optical time-domain reflectometry

Author

Gilberto Brambilla, Angeliki Zafeiropoulou, Laurence Cooper, Ali Masoudi, and Apostolos Zdagkas

Subjects
Materials science, business.industry, Ranging, 02 engineering and technology, 021001 nanoscience & nanotechnology, Curvature, 01 natural sciences, Atomic and Molecular Physics, and Optics, 010309 optics, Brillouin zone, Core (optical fiber), Optics, Brillouin scattering, Wavelength-division multiplexing, 0103 physical sciences, Time domain, 0210 nano-technology, Reflectometry, business
Abstract

A distributed curvature sensor based on Brillouin optical time-domain reflectometry interrogation technique in a D-shaped 7-core fibre is presented. By comparing the relative Brillouin frequency shift between the central core and three of the outer cores of the 7-core fibre, the curvature of various spools with different diameters is measured with a deviation from the actual value ranging between 9% and 15%. The analysis and results presented in this study show the first demonstration of distributed bend sensing using a specially designed multicore D-shaped fibre, paving the way for fully distributed 3D shape sensing.

Published
2020

3. D-shaped multicore fibre for distributed curvature sensing with BOTDR

Author

L.J. Cooper, Angeliki Zafeiropoulou, Gilberto Brambilla, and Ali Masoudi

Subjects
Optical amplifier, Amplified spontaneous emission, Materials science, Field (physics), Plane (geometry), business.industry, media_common.quotation_subject, Curvature, Asymmetry, Optics, Fiber optic sensor, Twist, business, media_common
Abstract

A D-shaped 7-core fibre is used for curvature sensing with a BOTDR technique. Due to the asymmetry in its geometry, the D-shaped fibre bends along a preferred plane, self-correcting for any twist. This renders it a good candidate for field applications.

Published
2020

4. Distributed shape sensing with a multicore fibre based on BOTDR technique

Author

Laurence Cooper, Gilberto Brambilla, Angeliki Zafeiropoulou, and Ali Masoudi

Subjects
Multi-core processor, Computer science, Acoustics, Frequency shift, 02 engineering and technology, 021001 nanoscience & nanotechnology, Curvature, 01 natural sciences, 010309 optics, Core (optical fiber), Brillouin zone, Fiber optic sensor, 0103 physical sciences, 0210 nano-technology, Image resolution
Abstract

A first attempt to perform shape sensing using the BOTDR interrogation technique in a multicore fibre is presented. It is shown that by comparing the relative Brillouin frequency shift between the central core and two of the outer cores, the curvature of an object can be measured.

Published
2018

5. New Approaches to Optical Fiber Sensing

Author

Wanvisa Talataisong, Rand Ismaeel, Angeliki Zafeiropoulou, Martynas Beresna, Gilberto Brambilla, Andrei Donko, and Ali Masoudi

Subjects
Optical fiber, Computer science, Ultrafast optics, Gyroscope, 01 natural sciences, Optical fiber sensing, law.invention, 010309 optics, Mathematics::Algebraic Geometry, Fiber optic sensor, law, Optical sensing, 0103 physical sciences, Computer Science::Networking and Internet Architecture, Electronic engineering, ComputerSystemsOrganization_SPECIAL-PURPOSEANDAPPLICATION-BASEDSYSTEMS, Focus (optics)
Abstract

Optical fibre sensors can be classified in point, quasi-distributed and distributed sensors. This tutorial will review the different types of optical fibre sensors, with a focus on recent developments in the distributed fibre sensors.

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