Explanipedia

Marimba: A Python framework for structuring and processing FAIR scientific image datasets Open

Chris Jackett, Kevin Barnard, Franziska Althaus, Nick Mortimer, D. J. Webb , et al. · 2025

The rapid advancement of scientific imaging technologies has created significant challenges in managing large-scale image datasets while maintaining compliance with FAIR (Findable, Accessible, Interoperable, and Reusable) data principles. …

Numerical Investigation of the Interaction of Tubular Hollow-Core Fibers and Flexural Acoustic Waves Open

Ricardo E. da Silva, Jonas H. Osório, Gabriel Labes Rodrigues, D. J. Webb, Frédéric Gérôme , et al. · 2025

International audience

Next-Generation Ultrasound Propagation in Suspended Core Optical Fibers Open

Ricardo E. da Silva, D. J. Webb · 2025

We demonstrate the temporal propagation of high-frequency ultrasonic pulses inside of a suspended core fiber (SCF) for the first time. An SCF composed of a m core suspended by nano bridges and four air holes is analytically and numerically…

Widely tunable dual acousto-optic interferometric device based on a hollow core fiber Open

Ricardo E. da Silva, Jonas H. Osório, Frédéric Gérôme, F. Benabid, D. J. Webb , et al. · 2024

Highly Efficient Compact Acousto-Optic Modulator Based on a Hybrid-Lattice Hollow Core Fiber Open

Ricardo E. da Silva, Jonas H. Osório, D. J. Webb, Frédéric Gérôme, F. Benabid , et al. · 2024

International audience

Highly Amplified Broadband Ultrasound in Antiresonant Hollow Core Fibers Open

Ricardo E. da Silva, D. J. Webb, Cristiano M. B. Cordeiro, Marcos A. R. Franco · 2024

High‐frequency broadband ultrasound in nested antiresonant hollow core fibers (NANFs) is investigated for the first time. NANFs have remarkable features enabling high‐resolution microscale optoacoustic imaging sensors and neurostimulators.…

Widely tunable dual acousto-optic interferometric device based on a hollow core fiber Open

Ricardo E. da Silva, Jonas H. Osório, Frédéric Gérôme, Fetah Benabid, D. J. Webb , et al. · 2024

An all-fiber dual Mach-Zehnder interferometer (MZI) based on an acoustically modulated hollow-core fiber (HCF) is experimentally demonstrated for the first time. By attaching an acoustic driver in between the fixed ends of an HCF, we fabri…

All-fiber fast acousto-optic temporal control of tunable optical pulses Open

Ricardo E. da Silva, Egor Manuylovich, Namita Sahoo, Marcos A. R. Franco, Hartmut Bartelt , et al. · 2024

Highly efficient compact acousto-optic modulator based on a hybrid-lattice hollow core fiber Open

Ricardo E. da Silva, Jonas H. Osório, D. J. Webb, Frédéric Gérôme, Fetah Benabid , et al. · 2024

We demonstrate the acousto-optic modulation of a hybrid-lattice hollow core fiber (HL-HCF) for the first time. For many years, optical fibers with reduced diameters have been the main solution to increase the interaction of acoustic and op…

Squeezing, trisqueezing, and quadsqueezing in a spin-oscillator system Open

O. Băzăvan, S. Saner, D. J. Webb, E. M. Ainley, P. Drmota , et al. · 2024

Quantum harmonic oscillators model a wide variety of phenomena ranging from electromagnetic fields to vibrations of atoms in molecules. Their excitations can be represented by bosons such as photons, single particles of light, or phonons, …

Highly efficient interaction of a tubular-lattice hollow-core fiber and flexural acoustic waves: design, characterization and analysis Open

Ricardo E. da Silva, Jonas H. Osório, Gabriel Labes Rodrigues, D. J. Webb, Frédéric Gérôme , et al. · 2024

The modulation efficiency of a tubular-lattice hollow-core fiber (HCF) by means of flexural acoustic waves is investigated in detail for the first time. The main acousto-optic properties of the HCF are evaluated employing 2D and 3D models …

Impact of goaf gas drainage from surface vertical boreholes on goaf explosive gas zones Open

Yuehan Wang, Guangyao Si, Bharath Belle, D. J. Webb, Liang Zhao , et al. · 2024

Interfacial characterization of soil-3D printing materials Open

Sina Fadaie, Moura Mehravar, D. J. Webb · 2024

3D printing has emerged as a revolutionary technique for producing products with specific shapes and mechanical properties tailored to various needs. Its ability to fabricate intricate structures and forms has garnered considerable attenti…

All-fiber broadband spectral acousto-optic modulation of a tubular-lattice hollow-core optical fiber Open

Ricardo E. da Silva, Jonas H. Osório, Gabriel Labes Rodrigues, D. J. Webb, Frédéric Gérôme , et al. · 2023

We demonstrate a broadband acousto-optic notch filter based on a tubular-lattice hollow-core fiber for the first time. The guided optical modes are modulated by acoustically induced dynamic long-period gratings along the fiber. The device …

Long-period gratings for monitoring the resin transfer molding of fiber-reinforced polymer composites Open

T. Allsop, Mohammad W. Tahir, K. Bhavasar, L. Zhang, D. J. Webb · 2023

The spectral characteristics of long-period gratings (LPGs) have been researched over the last two decades, and many sensing applications of LPGs have been proposed due to their spectral sensitivity to many surrounding environmental parame…

Breaking the entangling gate speed limit for trapped-ion qubits using a phase-stable standing wave Open

S. Saner, O. Băzăvan, Mariella Minder, P. Drmota, D. J. Webb , et al. · 2023

All laser-driven entangling operations for trapped-ion qubits have hitherto been performed without control of the optical phase of the light field, which precludes independent tuning of the carrier and motional coupling. By placing $^{88}$…

Detailed spatial-spectral numerical characterization of axially symmetric broadband ultrasonic resonances in standard optical fibers Open

Ricardo E. da Silva, D. J. Webb · 2022

Standard single mode optical fibers (SMFs) have been widely employed to generate and measure ultrasonic signals in remarkable applications. In particular, optoacoustic fiber sensors provide unique features for microscale high resolution ul…

Finite element numerical investigation of multimode ultrasonic interference and beatlengths in high frequency fiber-optic devices: 3D design, modeling, and analysis Open

Ricardo E. da Silva, D. J. Webb · 2022

A novel numerical study based on the finite element method is developed to demonstrate the beatlengths induced by high frequency acoustic modes inside an optical fiber for the first time. A practical methodology to model, compute and analy…

Nearshore Contamination Monitoring in Sandy Soils Using Polymer Optical Fibre Bragg Grating Sensing Systems Open

Sina Fadaie, Moura Mehravar, D. J. Webb, Wei Zhang · 2022

Civil engineering assets and geo-structures continually deteriorate during their lifetime, particularly in harsh environments that may be contaminated with corrosive substances. However, efficient and constant structural health monitoring …

Fibre Bragg gratings: monitoring of infusion process in liquid composite molding manufacturing Open

T. Allsop, Mohammad W. Tahir, Kaushal Bhavsar, Lin Zhang, D. J. Webb , et al. · 2022

The authors report the use of FBGs to monitor the infusion process of the Resin Transfer Molding (RTM). Composite structure can be very large, ensuring that the resin has reached every part of the mold during the infusion process becomes a…

Steady-State and Transient Electrical Properties of Liquid Crystal Cells Open

D. J. Webb, Yuriy Garbovskiy · 2022

Rapidly expanding and new applications of liquid crystal materials cover a wide range of technology products. A very incomplete list includes conventional and miniature high-resolution displays, AR/VR glasses, smart windows, dynamic lenses…

Overlooked Ionic Phenomena Affecting the Electrical Conductivity of Liquid Crystals Open

D. J. Webb, Yuriy Garbovskiy · 2021

Liquid crystal devices, such as displays, various tunable optical components, and sensors, are becoming increasingly ubiquitous. Basic physical properties of liquid crystal materials can be controlled by external physical fields, thus maki…

Performances of PMMA-Based Optical Fiber Bragg Grating Sensor in Extended Temperature Range Open

Wei Zhang, D. J. Webb · 2021

PMMA based optical fiber Bragg grating (POFBG) sensors are investigated in an environmental chamber with controlled temperature and relative humidity at temperature extended to 70 °C. At below a critical temperature of 50 °C the POFBG sens…

Ultra-compact acousto-optic modulator of a fibre Bragg grating in a highly birefringent suspended core fibre Open

Ricardo E. da Silva, Egor Manuylovich, Namita Sahoo, Martin Becker, Manfred Rothhardt , et al. · 2021

Highly efficient and compact acousto-optic modulator of a fibre Bragg grating is reported for the first time. The device is composed of millimetre scaled components and a 1 cm grating inscribed in a four air holes birefringent suspended co…

Soil water content measurement using polymer optical fibre Bragg gratings Open

Moura Mehravar, Hanrui Yang, D. J. Webb, Wei Zhang, Sina Fadaie Sestelani , et al. · 2021

Measuring soil water content is crucially important and can affect soil strength, which is a key parameter in the analysis, design and monitoring of geo-structures. In this study, an optical fibre Bragg grating sensor inscribed in polymer …

Generation of a Conjoint Surface Plasmon by an Infrared Nano‐Antenna Array Open

T. Allsop, Chengbo Mou, Ronald Neal, V. Kundrát, Changle Wang , et al. · 2020

Localized surface plasmons (LSP) excited by optical fields have many potential applications resulting from their ability in detecting ultra‐small, ambient refractive index change. Current methods using surface nano‐patterning by means of l…

An Interdisciplinary Master's of Sustainability Program Open

Roobik Gharabagi, Huliyar Mallikarjuna, D. J. Webb · 2020

A Multidisciplinary Master of Sustainability ProgramABSTRACT: A center for sustainability was established in the fall of 2009. As part of the center amultidisciplinary two years cross disciplinary Master of Sustainability program integrate…

One can't hear orientability of surfaces Open

Pierre Bérard, D. J. Webb · 2020

The main result of this paper is that one cannot hear orientability of a surface with boundary. More precisely, we construct two isospectral flat surfaces with boundary with the same Neumann spectrum, one orientable, the other non-orientab…

High frequency in-core acousto-optic modulation of a suspended core optical fibre Open

Ricardo E. da Silva, D. J. Webb · 2020

The confinement of high frequency acoustic waves inside a suspended core fibre (SCF) is numerically investigated for the first time. A 500 μm long acoustic cavity, based on a four-hole SCF, is designed, simulated and evaluated by using the…

Detection of nitrous oxide using infrared optical plasmonics coupled with carbon nanotubes Open

T. Allsop, Mohammed Al Araimi, R. Neal, Changle Wang, Phil Culverhouse , et al. · 2020

Interest in gas sensing using functionalised carbon nanotubes is a major area of research that up until now have utilised their electrical properties, here the optical properties are exploited and used to detect a specific gas.

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