Results 71 to 80 of about 3,038,754 (316)

1.3 μm p-Modulation Doped InGaAs/GaAs Quantum Dot Lasers with High Speed Direct Modulation Rate and Strong Optical Feedback Resistance

Crystals, 2020
Aiming to realize high-speed optical transmitters for isolator-free telecommunication systems, 1.3 μm p-modulation doped InGaAs/GaAs quantum dot (QD) lasers with a 400 μm long cavity have been reported. Compared with the un-doped QD laser as a reference,
Xia-Yida MaXueer, Yi-Ming He, Zun-Ren Lv, Zhong-Kai Zhang, Hong-Yu Chai, Dan Lu, Xiao-Guang Yang, Tao Yang   +7 more
doaj   +1 more source

Value of MRI Outcomes for Preventive and Early‐Stage Trials in Spinocerebellar Ataxias 1 and 3

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To examine the value of MRI outcomes as endpoints for preventive and early‐stage trials of two polyglutamine spinocerebellar ataxias (SCAs). Methods A cohort of 100 participants (23 SCA1, 63 SCA3, median Scale for the Assessment and Rating of Ataxia (SARA) score = 5, 42% preataxic, and 14 gene‐negative controls) was scanned at 3T up ...
Thiago J. R. Rezende, Emilien Petit, Young Woo Park, Sophie Tezenas du Montcel, James M. Joers, Jonathan M. DuBois, H. Moore Arnold, Michal Povazan, Ipek Özdemir, Guita Banan, Romain Valabregue, Philipp Ehses, Jennifer Faber, Chiadi U. Onyike, Peter B. Barker, Jeremy D. Schmahmann, Eva‐Maria Ratai, Sub H. Subramony, Thomas H. Mareci, Khalaf O. Bushara, Henry Paulson, Thomas Klockgether, Alexandra Durr, Tetsuo Ashizawa, Christophe Lenglet, Gülin Öz, READISCA Investigators   +26 more
wiley   +1 more source

Measurement of acoustic properties of South Pole ice for neutrino astronomy

, 2008
South Pole ice is predicted to be the best medium for acoustic neutrino detection. Moreover, ice is the only medium in which all three dense-medium detection methods (optical, radio, and acoustic) can be used to monitor the same interaction volume ...
Ackermann, Albert, Besson, Justin Vandenbroucke, Kravchenko, Price, Ringwald, Vandenbroucke, Weihaupt, Weiler   +9 more
core   +1 more source

Electro‐optical spiking neural networks using an enhanced optical axon with pulse amplitude modulation and automatic gain controller

IET Optoelectronics, 2023
Visible light communication can be leveraged to establish a wireless link between neurons in spiking networks even when neural areas are in relative motions.
George‐Iulian Uleru, Mircea Hulea, Othman Isam Younus, Zabih Ghassemlooy, Sujan Rajbhandari   +4 more
doaj   +1 more source

Innovating Aircraft Repair Processes: The Role of Digitalization in Sustainability

Advanced Engineering Materials, EarlyView.
This research explores how digitalization—by storing detailed non‐destructive testing data in structured DICONDE databases and creating a standard data model of the component—innovates aviation maintenance and repair processes. Coupled with a developed state‐based simulation model, it enables data‐driven, sustainable repair strategies that reduce waste,
Johanna Aigner, Geo Jacob, Florian Raddatz, Gerko Wende   +3 more
wiley   +1 more source

Secrecy Rate Bounds in Spatial Modulation-Based Visible Light Communications under Signal-Dependent Noise Conditions

Photonics
This study examines the physical-layer security of an indoor visible light communication (VLC) system using spatial modulation (SM), which consists of several transmitters, an authorized receiver, and a passive adversary.
Yahya M. Al-Moliki, Ali H. Alqahtani, Mohammed T. Alresheedi, Yahya Al-Harthi   +3 more
doaj   +1 more source

Electronic–photonic convergence for silicon photonics transmitters beyond 100 Gbps on–off keying

, 2020
We present design concepts for optical modulators without using any equalization or bespoke fabrication techniques. The demonstrated silicon photonics transmitter can operate at 100 Gbps OOK, while the power efficiency of the driver is 2.03 pJ/bit.
Ke Li, Shenghao Liu, D. Thomson, Weiwei Zhang, Xingzhao Yan, F. Meng, C. Littlejohns, H. Du, M. Banakar, M. Ebert, W. Cao, Dehn T. Tran, Bigeng Chen, A. Shakoor, P. Petropoulos, G. Reed   +15 more
semanticscholar   +1 more source

A Concept of a Digital and Traceable Manufacturing Documentation Based on Formalized Process Description Applied on Composite Aircraft Moveable

Advanced Engineering Materials, EarlyView.
The documentation of component manufacture has become an essential part of today's production processes, especially for the analysis and optimization of production or component design with regard to structural performance, economic efficiency, and sustainability.
Björn Denker, Dominik Delisle, Christian Krombholz, Martin Rädel, Frank Dressel   +4 more
wiley   +1 more source

Scalability of a packet-switched WDM MAN with support for optical multicasting [PDF]

, 2003
This paper addresses the scalability (in terms of the number of nodes) of a packetswitched WDM all-optical bi-directional ring for metropolitan area networks. The nodes enable adding/dropping packets to/from all WDM channels on the ring.
Bochove, A.C. van, Dey, D., Geuzebroek, D.H., Koonen, A.M.J.   +3 more
core   +1 more source

Coverage Performance of Non-Lambertian Underwater Wireless Optical Communications for 6G Internet of Things

Inventions
In medium- and short-range underwater application scenarios, thanks to the superior performance in transmission bandwidth, link latency, and security, underwater wireless optical communication (UWOC) is growing to be a promising complement to the mature ...
Jupeng Ding, Chih-Lin I, Jintao Wang, Jian Song   +3 more
doaj   +1 more source