Results 131 to 140 of about 15,067 (255)

Micro‐Transfer Printed Continuous‐Wave and Mode‐Locked Laser Integration at 800 nm on a Silicon Nitride Platform

Laser &Photonics Reviews, EarlyView.
A heterogeneous III‐V/SiN platform for lasers at 800 nm is realized using the micro‐transfer printing method. Efficient GaAs gain sections are directly butt‐coupled to SiN waveguides, enabling continuous‐wave and mode‐locked extended‐cavity lasers. The mode‐locked lasers generate highly stable pulse trains with repetition rates up to 9.2 GHz and a ...
Max Kiewiet, Stijn Cuyvers, Maximilien Billet, Konstantinos Akritidis, Valeria Bonito Oliva, Gaudhaman Jeevanandam, Sandeep Saseendran, Manuel Reza, Pol Van Dorpe, Roelof Jansen, Joost Brouckaert, Günther Roelkens, Kasper Van Gasse, Bart Kuyken   +13 more
wiley   +1 more source

Detecting Bubbles Rising in a Standing Liquid Column Using a Fibre Bragg Grating Grid

Journal of Nuclear Engineering
Fibre Bragg grating (FBG) grid sensors are an underexplored technology with potential to benefit nuclear thermal hydraulics experiments. This paper presents a new FBG grid sensor consisting of 38 FBGs across 8 flow-crossing chords.
Harvey Oliver Plows, Marat Margulis
doaj   +1 more source

Amplification of Light‐Ultrasound Interaction in a Pi‐Shifted Fiber Bragg Grating for Enhanced Ultrasonic Sensitivity

Laser &Photonics Reviews, EarlyView.
By precisely engineering the geometry of a fiber‐based optical resonator, the interaction between confined light and external ultrasound waves is significantly amplified without sacrificing light confinement, boosting the ultrasound detection sensitivity beyond 0.5 mPa/√Hz.
Tai‐Anh La, Rami Shnaiderman, Vasilis Ntziachristos   +2 more
wiley   +1 more source

Preliminary View of a Smart Technique for Materials Testing in the Laboratory using FBG Sensor

MATEC Web of Conferences, 2018
Simple experiments for calibrating Fibre Bragg Grating (FBG) in order to measure strain and temperature have been successfully demonstrated in this study. This will allow convenient use of FBG sensor in the laboratory for measuring quantities.
Balarabe Isah W., Hisham Mohamad, Niraku Ahmad R., Harahap Indra S.H.   +3 more
doaj   +1 more source

Validation of optical fibre-based SHM for composite aircraft structures using a building block approach [PDF]

EPJ Web of Conferences
We demonstrate a building block validation strategy for structural health monitoring (SHM) of aerospace composite structures using optical fibre Bragg grating (FBG) sensors.
Goossens Sidney, Jiménez Miguel, Karachalios Evangelos, Mendías María Mora, Khodaei Zahra Sharif, Berghmans Francis   +5 more
doaj   +1 more source

Model of the Temperature Influence on Additively Manufactured Carbon Fibre Reinforced Polymer Samples with Embedded Fibre Bragg Grating Sensors. [PDF]

Materials (Basel), 2021
Shafighfard T, Shafighfard T, Mieloszyk M.   +2 more
europepmc   +1 more source

Pulse Generation by On‐Chip Dispersion Compensation at 8 µm Wavelength

Laser &Photonics Reviews, EarlyView.
This work demonstrates on‐chip pulse generation at 8 μm$\mathrm{\mu}\mathrm{m}$ using chirped Bragg gratings in SiGe graded‐index photonic circuits to compensate the quadratic phase of quantum cascade laser frequency combs. With this approach pulses as short as 1.39 ps were produced, close to the transform limit, representing a key step toward compact,
Annabelle Bricout, Mathieu Bertrand, Philipp Täschler, Barbara Schneider, Victor Turpaud, Stefano Calcaterra, Davide Impelluso, Marco Faverzani, David Bouville, Jean‐René Coudevylle, Samson Edmond, Etienne Herth, Carlos Alonso‐Ramos, Laurent Vivien, Jacopo Frigerio, Giovanni Isella, Jérôme Faist, Delphine Marris‐Morini   +17 more
wiley   +1 more source

Optimisation of Through-Thickness Embedding Location of Fibre Bragg Grating Sensor in CFRP for Impact Damage Detection. [PDF]

Polymers (Basel), 2021
Rocha H, Lafont U, Nunes JP.
europepmc   +1 more source

Time‐Stretched Interferometric LiDAR with Dispersive Wavenumber‐to‐Time Range Encoding

Laser &Photonics Reviews, EarlyView.
We present a time‐stretched interferometric LiDAR that directly encodes distance into time‐domain interference signals. Operating at 5 MHz with only millimeter‐level coherence length, the system measures up to 12 m with centimeter precision and resolution, achieving high‐speed 3D imaging and dynamic target detection without FFT processing or long ...
Dahun Jung, Gyeong Hun Kim, Seongjin Bak, Jaeheung Kim, Sang Min Park, Wontae Choe, Chang‐Seok Kim, Hwidon Lee   +7 more
wiley   +1 more source

Liquid Resin Infusion process monitoring with embedded superimposed long period and short period Bragg grating sensor.

EPJ Web of Conferences, 2010
We propose here the monitoring of the Liquid Resin Infusion (LRI) process for using a superimposed long period (LPG) and short period (FBG) Bragg grating sensor.
Robert L., Marin E., Ouerdane Y., Triollet S.   +3 more
doaj   +1 more source