Results 81 to 90 of about 14,209,054 (299)

Power Over Fiber System for Heterogeneous Sensors Multiplexing

Journal of Lightwave Technology
This paper presents a Power-over-Fiber based remote electronic and optical fiber sensors multiplexing scheme. The system architecture consists of a 50-km linear cavity Raman-fiber laser that is used for interrogation of FBG optical fiber sensors. Simultaneously, electronic sensors information is modulated in amplitude while the optical sensors' data ...
Armando Rodriguez, Evelyn Vanegas-Tenezaca, Jose R. Vento Alvarez, Manuel Lopez-Amo, Mikel Bravo   +4 more
openaire   +3 more sources

High Power-over-Fiber Feed for Radio-over-Fiber Systems with Remote Antenna Units

IOP Conference Series: Earth and Environmental Science, 2020
Abstract We experimentally demonstrated a radio-over-fiber transmission integrated with a power-over-fiber system for next generation access networks, which can drive remote antenna units and improve bandwidth utilization effectively. We have achieved high transmission performance and expanded the signal transmission capacity.
Liwei Yang, Huiping Yang, Qi Zhang, Zhengqiu Huang, Wenjie Zhang   +4 more
openaire   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

High-power supercontinuum generation with picosecond pulses [PDF]

, 2010
We investigate both theoretically and experimentally the properties of supercontinuum generation in the nearinfrared and visible regimes using high-power picosecond pulses propagating in a photonic crystal optical fiber. We discuss the effect of the pump
Horak, P., Shaif-ul Alam, Sonali Dasgupta, David J. Richardson, Kang Kang Chen, Dasgupta, S., Peter Horak, Richardson, D.J., Chen, K.K., Alam, S.-U.   +9 more
core   +2 more sources

A Simplified Laminar Flow Model for the Pultrusion of Glass Fiber/Polyethylene Terephthalate Commingled Yarns

Advanced Engineering Materials, EarlyView.
A simplified thermoplastic pultrusion model is developed to predict thermal fields in glass fiber/polyethylene terephthalate (GF/PET) composites with reduced computational cost. By combining effective material homogenization, validation against literature data, and Gaussian‐process‐based optimization, the study reveals how heating limits, pulling speed,
Elder Soares, Nadège Bouchonneau, Christian Jochum, Donald Radford   +3 more
wiley   +1 more source

Is an Apple an Orange? A Large Language Model Benchmark for Candidate Term Extraction and Subclass Decisions Against Upper Ontologies in Engineering and Materials Science

Advanced Engineering Materials, EarlyView.
Building machine‐readable vocabularies for materials science is slow, expert‐driven work. This study benchmarks 13 large language models on two of its first steps: finding candidate terms in engineering articles and deciding where they belong in a class hierarchy.
Thomas Bjarsch, Maximilian Holland, Klaus Drechsler, Johannes Schilp   +3 more
wiley   +1 more source

55% Efficient High-Power Multijunction Photovoltaic Laser Power Converters for 1070 nm

Photonics
High-efficiency multijunction laser power converters are demonstrated for the first time at high power for optical inputs around 1070 nm. The InP-based photovoltaic power-converting III–V heterostructures are designed with eight lattice-matched InGaAsP ...
Simon Fafard, Denis Masson
doaj   +1 more source

MEMS-Based Tunable Linear-Cavity Fiber Laser

IEEE Photonics Journal, 2012
A novel tunable fiber laser employing a linear cavity in conjunction with a microelectromechanical system (MEMS) is proposed and experimentally demonstrated.
David Michel, Feng Xiao, Kamal Alameh
doaj   +1 more source

Simultaneous Dual Band Transmission Over Multimode Fiber-Fed Indoor Wireless Network [PDF]

, 2006
Performance measurements of different combinations of digital enhanced cordless telecommunications packet radio service, global system for mobile communications, universal mobile telecommunication service, and 802.11g (54 Mbps) signals in a dual band ...
Lethien, Christophe, Vilcot, Jean-Pierre, Batchelor, John C., Nkansah, Anthony, Gomes, Nathan J., Wake, David, Das, Anjali, Garcia Zuazola, Ignacio Julio   +7 more
core   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source