Results 71 to 80 of about 7,939 (303)

RSOA-based self-seeded transmitters: The ERMES project results and offsprings [PDF]

open access: yes, 2017
The EU FP7 ERMES project focused on the development of a wavelength division multiplexed passive optical network (WDM PON) colourless self-tuning transmitter based on reflective semiconductor optical amplifiers (RSOAs) self-seeding.
Gatto, A.   +7 more
core   +1 more source

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

open access: yesCrystals, 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   +7 more
doaj   +1 more source

Optimizing photoexcitation conditions for time‐resolved X‐ray solution scattering experiments

open access: yesFEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering (TR‐XSS) is a powerful technique to visualize how proteins change their structure in real time after light activation. Selecting the right laser photoexcitation conditions—fluence, excitation geometry, and sample refresh rate—is critical to maximize the experimental signal while avoiding unwanted side effects ...
Matteo Levantino
wiley   +1 more source

Photonic integration technologies for indoor optical wireless communications [PDF]

open access: yes, 2018
Indoor optical wireless communication (OWC) using steerable infrared beams is regarded as an important component in future 5G network. Photonic integration technologies can meet the criteria of such application, and provide low-cost, high-performance and
Cao, Zizheng   +3 more
core   +1 more source

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

open access: yesPhotonics
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   +3 more
doaj   +1 more source

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

open access: yesIET 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   +4 more
doaj   +1 more source

Avidin is evolutionarily conserved in fish but dispensable for development and resistance against Streptococcus agalactiae in zebrafish

open access: yesFEBS Open Bio, EarlyView.
The presence of biotin‐binding avidin proteins in fish and their biological significance are poorly characterized. We cataloged fish avidins and demonstrate that they are widely present and evolutionarily conserved. We created avd knockout zebrafish and show that zebavidin is dispensable for development and that resistance of avd knockout embryos in ...
Anni K. Saralahti   +5 more
wiley   +1 more source

Photonic multiwavelength transmitters for optical access networks [PDF]

open access: yes, 2012
We present integrated multiwavelength transmitters for application in Fiber-to-the- Home systems. The transmitters are realized on a generic indium-phosphide-based integration platform and fabricated in a multi-project wafer run.
Smit, M.K.   +11 more
core  

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

open access: yesInventions
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   +3 more
doaj   +1 more source

Effectiveness of rTMS on Working Memory and Inhibitory Impairments in Patients With Post‐Stroke Executive Deficits

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Considerable efforts have been dedicated to developing effective treatments for post‐stroke executive impairment (PSEI), among which repetitive transcranial magnetic stimulation (rTMS) has shown great potential. This study aimed to investigate the therapeutic effects of high‐frequency rTMS on working memory (WM) and response ...
Mengting Lao   +6 more
wiley   +1 more source

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