Articles tagged with Bandwidth
The University at Albany has received a $1.3 million award from the National Science Foundation (NSF) to establish an advanced wireless testbed, enabling researchers to develop next-generation technologies for wireless communications and sensing systems across a wide range of frequencies.
Researchers have demonstrated a record-breaking 450 terabits per second optical transmission over a field-deployed legacy fiber in London, UK. The achievement uses new optical-amplifier technologies to support ultra-wideband signals, exceeding previous records and unlocking previously untapped capacity in standard optical fibers.
A new hybrid wireless access network called PHWAN has been proposed to improve the performance of smart factories. The framework combines different wireless systems, including 5G, Wi-Fi, and low-power industrial networks, to adapt dynamically to the needs of different machines.
Researchers have demonstrated a record-breaking 430 terabits per second (Tb/s) optical transmission using a novel approach that triples the capacity of standard-compliant cutoff-shifted optical fibers. The technology offers high throughput with reduced complexity, while utilizing existing optical fiber infrastructure.
Researchers at Rice University have developed a new method to generate radio wave patterns that can identify signal direction with unprecedented accuracy, enabling rapid establishment of wireless links. This breakthrough enables high data-rate links to form almost as soon as the signal is sent.
A team at the University of Kansas will develop intelligent spectrum management frameworks to enable reliable communication for drones. They aim to study how to use a proposed 5030-5091 MHz frequency band efficiently, with potential benefits including quicker deliveries and improved emergency response.
The study successfully demonstrated impedance tuning of a 250 GHz waveguide transition, validating the effectiveness of mechanical tuning as a method to compensate for fabrication-induced performance variation. Terahertz frequencies above 100 GHz offer extremely wide bandwidths suitable for next-generation wireless communications.
A new amplifier developed by Chalmers University of Technology can transmit ten times more data per second than current systems, holding significant potential for various critical laser systems, including medical diagnostics and treatment. The amplifier's large bandwidth enables precise analyses and imaging of tissues and organs.
Researchers from ETH Zurich have developed a tiny plasmonic modulator that can transmit data with frequencies over a trillion oscillations per second, breaking previous records. The new modulator can be used for various applications, including high-performance computing and measurement technology.
Researchers have developed a photonic-chip-based amplifier that achieves ultra-broadband signal amplification in an unprecedentedly compact form. The new amplifier uses optical nonlinearity to boost weak signals while keeping noise low, making it highly adaptable to various applications beyond telecommunications.
Researchers have developed a high-speed, energy-efficient electro-optic switch with low crosstalk and broad bandwidth. The switch uses a scalable process and consists of four Mach-Zehnder interferometer structures formed by silicon nitride waveguides.
Researchers develop dual-stage E+S-band bismuth-doped fiber amplifier for next-generation optical communication systems. The device achieves unprecedented broad bandwidth, high gain and low noise, making it suitable for boosting optical signals.
Researchers at Syracuse University have developed ultra-thin absorbers that exceed theoretical limits, enabling efficient capture of electromagnetic waves across broad frequency ranges. These advancements have significant implications for industries such as defense, energy harvesting and advanced communication systems.
Researchers developed a low-power, high-frequency signal transmission tag that can efficiently reflect signals at untapped frequencies, eliminating the need for power-hungry signal transmitters. This technology enables real-time monitoring in industrial settings and has potential applications in smart cities and agriculture.
Researchers developed wide-incident-angle radio-wave absorbers for mmW and THz frequencies, enhancing antenna beamforming and steering. The absorbers achieve high-performance absorption across broad bandwidths, supporting integration with advanced antenna technologies.
Researchers from UCL Electronic & Electrical Engineering have developed a novel approach to wireless communication by combining radio and optical technologies. This allows for the transmission of large amounts of data at unprecedented speeds, up to 9,380 times faster than current 5G download speeds.
Researchers at Shanghai Jiao Tong University develop a novel method for broadband frequency conversion using X-cut thin film lithium niobate, achieving a bandwidth of up to 13 nanometers. This breakthrough enables on-chip tunable frequency conversion, opening the door to enhanced quantum light sources and larger capacity multiplexing.
Researchers at Seoul National University have successfully realized a noise-resistant broadband signal processing platform using topological design techniques. This breakthrough enables wide bandwidth realization in two dimensions, overcoming the trade-off between signal channel number and channel bandwidth.
A new type of sensor leverages exceptional points to achieve high sensitivity and reconfigurability. The novel design addresses limitations of traditional EP-based sensors by incorporating spoof localized surface plasmon resonators, allowing for dynamic reconfiguration of EP states across a wide frequency range.
A new deep learning-based inverse design method allows for the optimization of complex acoustic metamaterials, reducing noise pollution while maintaining ventilation. The approach enables ultra-broadband sound attenuation across various peak frequencies.
A groundbreaking approach inspired by bio-inspired neuromorphic imaging and speckle correlography has unveiled a revolutionary technique for optical image encryption. This method leverages computational neuromorphic imaging to encrypt images into event-stream ciphertexts, significantly enhancing security and complexity.
A team at NICT set a new world record for data-rate transmission in a standard optical fiber, reaching 402 Tb/s and increasing the aggregate bandwidth to 37.6 THz. The demonstration used novel technologies to access new wavelength regions, enabling future optical communication infrastructure to meet growing demands.
A new 640 Gbps D-band CMOS transceiver chipset offers speeds 10 to 100 times faster than current 5G systems. The proposed chipset enables high-speed wireless transmission, with applications in automated cars, telemedicine, and advanced virtual reality experiences.
Researchers have developed a system combining bio-inspired cameras with AI to quickly detect obstacles around cars, using less computational power. The hybrid system detects objects up to one hundred times faster than current systems while reducing data transmission and processing needs.
A team of researchers at NYU Abu Dhabi's Photonics Research Lab has developed a novel, two-dimensional material capable of precise light modulation. The innovation offers precise control over the refractive index while minimizing optical losses, enhancing modulation efficiency and reducing footprint.
A new neural network-based system called BONES improves video streaming quality by up to 13% while reducing download size, according to NJIT researcher Jacob Chakareski. The system uses a mathematical function to optimize data transmission and can be applied to various platforms, including popular video conferencing services.
Brown University researchers unveil novel method to manipulate terahertz waves, allowing them to curve around obstacles instead of being blocked. The technique uses self-accelerating beams to maintain signal integrity in crowded environments.
The team's innovative design enables ultra-compact quasi-true-time-delay technology, increasing data rate and channel capacity by nearly doubling that of conventional wireless arrays. This breakthrough could lead to faster service and more data transmission for cellphone users.
Researchers successfully cooled positronium atoms to record-low temperatures of 170 K, significantly reducing their transverse velocity component. This achievement has far-reaching implications for precision spectroscopy and the study of quantum electrodynamics.
Scientists at Shanghai Institute of Microsystem and Information Technology enhance the photon-number-resolving capability of single-photon detectors by widening superconducting strips. This results in better dynamic range and fidelity, enabling true-photon-number resolution up to 10.
Researchers extend spatially incoherent diffractive networks to perform complex-valued linear transformations with negligible error, opening up new applications in fields like autonomous vehicles. This breakthrough enables the encryption and decryption of complex-valued images using spatially incoherent diffractive networks.
Researchers developed a carbon-based tunable metasurface absorber with an ultrawide, tunable bandwidth in the THz range. The absorber boasts high absorption efficiency and insensitivity to polarization angles, paving the way for advanced technological applications.
Researchers use water as a nonlinear medium to create a supercontinuum white laser covering an impressive spectral range from UV to far infrared. The resulting ultrabroadband source has potential in ultrafast spectroscopy, hyperspectral imaging, and scientific research.
Researchers have developed Coherent Two-Photon LIDAR, eliminating range limitations imposed by coherence time. This technique uses phase-dependent interference to measure distances beyond the coherence time of the light source.
Researchers developed an AI model to optimize network allocation, saving bandwidth and reducing computational cost. The model can be adapted for various scenarios, including drone battery conservation and remote surgery.
Researchers at Nanjing University have developed a miniaturized FSO system achieving an astonishing 9.16 Gbps bandwidth over 1 km link using readily available commercial fiber transceiver modules. The system enables automatic tracking and precision acquisition, eliminating the need for optical amplification.
Researchers at UCF developed a new class of optical modulators to address limitations in data transfer over optical fiber communication, reducing lag and improving reliability. The technology uses phase diversity and differential operations to ensure accurate and efficient transmission.
Researchers developed a photoelectrochemical technique to precisely tune the lasing wavelength of microdisk lasers with subnanometric accuracy. The new approach facilitates the fabrication of micro- and nano-laser batches with precise emission wavelengths.
A hybrid system of electronic encoding and diffractive optical decoding transmits optical information with high fidelity through random, unknown diffusers. The system outperforms traditional approaches that only utilize a diffractive optical network or an electronic neural network for optical information transfer.
Researchers developed a new approach to create a wideband microwave absorption metamaterial using ultraviolet lasers, achieving high absorption performance and control over electrical and magnetic properties. The process enables mass production of complex structures without post-treatment.
Researchers at UC San Diego have developed a new technique to increase 5G mmWave network accessibility. The 'mmFlexible' system leverages antenna arrays to divide frequency bands into multiple usable beams, reducing lag by 60-150%. This innovation addresses the challenge of efficient data distribution in millimeter wave networks.
A new system called ViPER+ uses ultra-wideband technology to track workers' locations on job sites, enhancing safety by detecting violations of location-based policies. The system was tested in two construction zones with students playing the roles of workers and vehicles, demonstrating its accuracy in non-line of sight situations.
Researchers developed an all-optical quantum state sharing protocol that uses continuous variable systems to share secret information between multiple parties. The new method successfully implemented in a low-noise amplifier and demonstrated higher average fidelity than classical limits.
Researchers compared two semiconductor simulation tools and found that the Fermi kinetics transport solver outperforms a commercial hydrodynamics software package in modeling electronic heat flow and electron temperature, particularly in high-speed applications. The custom-developed code converges faster and provides more consistent re...
Researchers achieved unprecedented extreme physical conditions using a 100 PW laser system, enabling new applications and fundamental science. The system features an OPCPA front end that supports peak powers of 263 TW and pulse durations as short as 13.4 fs.
Researchers developed a new lidar technique using 3D flash lidar combined with super-resolution algorithm for hazard avoidance during landing. The technique improved the precision and safety of robotic vehicles on Mars, enabling them to navigate through challenging environments.
Researchers demonstrate world's first 55-mode transmission at 1.53 petabits per second, outperforming previous records by three times in spectral efficiency. The technology holds promise for future high-capacity backbone networks and the development of Beyond 5G infrastructure.
Researchers have developed a method for centimeter-scale color printing using grayscale laser writing, achieving vivid and fine-tunable colors. The technique leverages pixelated optical cavities to generate transmission colors with a transmission efficiency of 39-50%.
A team from Harvard John A. Paulson School of Engineering and Applied Sciences has developed an electro-optic frequency comb that is 100-times more efficient and has more than twice the bandwidth of previous state-of-the-art versions.
Rice University researchers have received three NSF grants to develop tools and techniques for improving wireless communications. The projects focus on creating more efficient sensing and communication technologies, as well as protocols for resilience in the face of natural or human-induced disasters.
Researchers found that Gursky's spectral tarsier duets exhibit acoustic trade-offs in note rate and bandwidth, suggesting a relationship between physical fitness and vocal complexity. The study suggests that only physically fit individuals can easily produce broadband notes fast.
A team led by Professor Song Min Kim developed a system that can support concurrent communications for tens of millions of IoT devices using backscattering millimeter-level waves. The system offers internet connectivity on a mass scale to IoT devices at a low installation cost.
The researchers achieved ultranarrow linewidths and wavelength tunability in the lithium niobate microlaser, enabling applications like lidar and metrology. The single-mode lasing is realized through simultaneous excitation of high-Q polygon modes at both pump and laser wavelengths.
Scientists at the University of Oxford have created a new type of computing processor that uses light to process information, achieving speeds faster than traditional electronics. By leveraging multiple polarisation channels, the researchers increased computing density by several orders of magnitude, paving the way for more efficient p...
Researchers from NICT demonstrated a record-breaking 1.02 petabit per second transmission capacity in a 4-core MCF with a standard 0.125 mm cladding diameter, exceeding 20 THz optical bandwidth with 801 parallel wavelength channels.
Researchers from KAUST have designed an all-inorganic halide-perovskite polymer-fiber-photodetector that can detect light in the green region (around 510 nm), enabling fast underwater optical communications. The system offers a 3dB bandwidth of 13.1 MHz, allowing data transmission speeds of up to 152.5 Mbit/s.
Researchers proposed and experimentally demonstrated an all-optical random bit generation method using chaotic pulses quantized in the optical domain. This method generated a 10 Gb/s random bit stream, potentially operable at higher rates by exploiting ultrafast fiber response.
Researchers have found that the UK's existing copper network cables can support faster internet speeds, but only up to a certain frequency, and will not be able to support high-speed internet in the longer term. The study highlights the importance of investing in future technologies to make high-speed internet available to all.
A new approach using an array of series-connected solar cells as detectors simplifies underwater optical data links, offering a cost-effective and low-energy way to transmit data underwater. The system demonstrated the highest bandwidth ever achieved for a commercial silicon solar panel-based optical communication system.
Researchers developed a new waveguide to overcome limitations in THz signal transmission and processing. The device allows for unprecedented flexibility towards manipulating THz pulses, enabling complex signal-processing functionalities such as holographic messaging.