Articles tagged with Fiber Optics
Researchers at HSE University identified universal critical indices for calculating fibre laser characteristics and operating regimes. The study enables predictions of laser parameters and facilitates optimisation for various applications.
Researchers developed a novel side-polished fibre pump combiner that achieves high coupling efficiency and stabilizes Mid-IR laser operation. The design effectively distributes heat load across the polished fibre area, enabling long-term stable operation with low excess losses.
A novel concept for a hybrid fibre pump combiner is introduced, enabling high-power, long-term stable operation in Mid-IR fibre laser systems. The design leverages evanescent field coupling to overcome the limitations of soft glass fibres.
Researchers have developed a low-coherence Brillouin optical correlation-domain reflectometry system that overcomes spatial resolution and measurement range trade-offs. The new method uses periodic pseudo-random modulation, achieving accurate distributed strain measurements without a variable delay line.
Researchers have achieved data rates of up to 424Gbit/s using plasmonic modulators for free-space optical communication. This technology could provide high-speed, high-capacity data transmission for space missions with lower latency and less interference.
The study compares nerve fiber orientation captured with specialized MRI and OCT approaches, laying groundwork for combining these imaging techniques. The findings show strong potential for PS-OCT to validate dMRI data, providing valuable insights about the microstructural organization of nerve fibers.
A team of scientists developed a flexible mode-switching system utilizing an optical neural network chip to switch between different Orbital Angular Momentum (OAM) modes in a multimode fibre. The system achieved low-crosstalk mode switching, enabling efficient and flexible optical networks capable of meeting growing demands.
Researchers propose a leaf-inspired luminescent solar concentrator (LSC) design to overcome scalability limitations. The innovative setup enhances photon collection and transfer, improving efficiency and reducing self-absorption issues.
Researchers developed a new spectroscopy method using tunable lasers, enabling precise tracking of the laser's color at every point in time. The technique offers higher power and spectral stability compared to existing methods, making it suitable for various applications including LIDAR and spectroscopy.
Researchers at the University of Bath have created new specialty optical fibers to cope with the challenges of future quantum computing. These fibers feature a micro-structured core that allows for improved data transfer and the creation of entangled photons, enabling quantum computation.
The study proposes an all-fiber multiplexed parallel acquisition and transmission one-piece system called Multicore Fiber Acquisition and Transmission Image System (MFAT). This system encodes image data in the optical domain through optical fiber coupling, enabling high-capacity and high-quality transmission.
Researchers have made significant advancements in understanding the complex dynamics of soliton molecules, revealing quasi-periodic behaviors and chaotic transitions. The study also discovers intrinsic frequency entrainment, a phenomenon showcasing synchronization within optical resonators.
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.
Researchers developed a novel method to estimate modulation amplitude and determine spatial resolution in Brillouin optical correlation-domain reflectometry (BOCDR) without costly equipment. This innovation simplifies the process, reducing costs and enhancing convenience.
Researchers propose an all-fiber multiplexed parallel acquisition and transmission system to tackle challenges of long-distance data transmission. The system enables real-time scene reconstruction from distances of up to one kilometer, making it suitable for extreme environments.
Researchers developed a chip-scale erbium-doped waveguide laser that approaches fiber-based laser performance, featuring wide wavelength tunability and stable output. The breakthrough enables low-cost, portable systems for various applications including telecommunications, medical diagnostics, and consumer electronics.
The researchers successfully transformed brittle semiconductors into flexible fibers, enabling innovative applications in flexible electronics. The fibers have broad application prospects in wearables, the metaverse, AI, extreme environment sensors, and brain-computer interfaces.
Researchers have developed a groundbreaking solution to overcome DAC challenges, achieving record-breaking data transmission performance. The innovative approach enables the transmission of signals at rates exceeding 124 GBd PAM-4/6 and 112 GBd PAM-8 over long distances using low-cost digital-to-analog converters.
A recent study by the Hebrew University of Jerusalem developed a Free-Standing Microscale Photonic Lantern Spatial Mode (De-)Multiplexer using 3D Nanoprinting. The device enables spatial mode multiplexing, converting between optical waves and separated single-mode signals, with applications in high-capacity communication and imaging.
Researchers develop ultrafast wavemeter based on multimode and multicore fibers, enabling high-speed wavelength measurements. The new method achieves a spectral measurement speed of 100MHz while maintaining a high resolution of 2.7pm.
Researchers have developed a highly sensitive fiber optic gyroscope to monitor ground rotations caused by earthquakes in the Campi Flegrei area. The sensor, based on the Sagnac effect, can detect small to medium local earthquakes and provide valuable insights into seismic activity.
Researchers have introduced iso-propagation vortices, offering a solution to increasing information processing capacity while overcoming traditional vortex beam limitations. IPVs exhibit OAM-independent propagation, allowing for consistent beam size during free-space propagation.
Researchers have developed a method to 3D print silica glass micro-optics on the tips of optic fibers, creating structures 1,000 times smaller than a grain of sand. This breakthrough enables more sensitive remote sensors for environment and healthcare applications, as well as innovations in pharmaceuticals and chemicals.
Researchers at Harvard University have successfully demonstrated the first metro-area quantum computer network in Boston, using existing telecommunication fiber to send hacker-proof information via photons. The breakthrough overcomes signal loss issues, enabling the creation of a secure quantum internet.
A new Bayesian inference framework reduces data size by over 80% while achieving accurate modeling and control of optical power evolution. The approach enables simultaneous exploitation and exploration of a data space to identify suitable candidates for autonomous driving optical networks.
Canadian researchers have developed a new 3D printing method called blurred tomography that can rapidly produce microlenses with commercial-level optical quality. The method uses projected light to solidify a light-sensitive resin in specific areas, allowing for rapid prototyping of optical components.
A new, low-cost, high-efficiency photonic integrated circuit has been developed using lithium tantalate technology. The breakthrough platform offers scalable and cost-effective manufacturing of advanced electro-optical PICs, paving the way for volume manufacturing.
A research team has successfully created a new dimension in photonic machine learning by incorporating sound waves, enabling the creation of reconfigurable neuromorphic building blocks. This innovation has the potential to revolutionize computing tasks by providing high-speed and large-capacity solutions.
Researchers developed a novel temperature-dependent viscosity mediated strategy to control Bi dopant deactivation during fiber drawing. A borate glass system with faster viscosity changing rate was created, resulting in the first demonstration of on-off gain in a Bi-doped borate fiber system.
For the first time, scientists have created a system that interfaces two key components of quantum networks: quantum information creation and storage. The team used regular optical fibres to transmit quantum data, enabling long-distance communication and paving the way for distributed computing and secure communication.
Researchers have developed VECSELs with record output power and absolute frequency stability, overcoming the hurdle of spectral differences between glass fibers and quantum bits. These lasers enable low-loss transmission and precise frequency conversion for quantum internet applications.
Scientists have made significant breakthroughs in Quantum Key Distribution (QKD) technology, enabling secure data transfer over long distances. The new method uses Continuous Variable Quantum Key Distribution to distribute quantum-encrypted keys via fibre optic cables, paving the way for a quantum-secure internet infrastructure.
Researchers have developed a visible-light mode-locked femtosecond fiber oscillator and amplifier, emitting red light at 635 nm. The device achieves a pulse duration of 199 fs and an average output power over 1 W.
Researchers developed a unique microfluidics-based diagnostic system that combines optical tweezers with stimulated Raman spectroscopy to enable fast and accurate diagnosis of leukemia. The device can identify cancer cells based on their metabolic activities and metabolites, providing tailored treatment options.
The Optical Fiber Communications Conference and Exhibition (OFC) 2024 will feature cutting-edge tech demonstrations, including quantum technology advancements, 800ZR and Coherent PON. Industry leaders will discuss the latest in optical technology, with a focus on innovation and connectivity.
The study reveals that two neural pathways in the paraventricular nucleus of the thalamus participate in dynamic regulation of goal pursuits, with PVT+ neurons encoding execution and termination of actions, respectively. Activity in these neurons mirrors motivation parameters such as vigor and satiety.
Researchers developed ultra-thin defect-free semiconducting fibers, over 100 meters long, which can be woven into fabrics. The fibers demonstrate excellent electrical and optoelectronic performance, enabling various applications such as wearable electronics and sensors.
Scientists have created a way to correct distorted light patterns in real time without needing to reapply the same distortion. This method uses nonlinear optics and exploits difference frequency generation to produce an aberration-free output beam.
A team of scientists has created a highly flexible, uniformly luminescent photochromic fiber that can achieve uniform light emission and wide color gamut control. The fiber is designed to be mass-producible and integrated into various wearable interactive interfaces, enabling diversified interactions such as emotion and communication.
Researchers propose using fiber seismic networks to detect seismic waves on the Moon and provide information about its deep core structure. By analyzing artificial seismograms created from Apollo mission data, they found that a fiber network could identify specific seismic waves hidden in scattered signals.
Researchers developed a wearable sticker that can detect subtle hand movements, enabling individuals with disabilities to communicate more easily. The sensors show high sensitivity and accuracy in recognizing gestures and translating them into words or commands.
Researchers developed a wireless device powered by light that can be implanted to regulate cardiovascular or neural activity in the body. The ultralight membrane is thinner than a human hair and contains no moving parts, offering a minimally invasive surgery alternative.
Researchers developed submonolayer biolasers on optical fibers with ultrahigh Q-factors, achieving a six-order-of-magnitude improvement in lower limit of detection compared to monolayer biolasers. The sensors showed potential for high-throughput clinical diagnosis and cost-effective early disease detection.
A study demonstrates the potential of transceiver-based sensing for actively monitoring and improving the stability of fiber networks. Researchers used a coherent transceiver prototype to detect polarization changes that preceded a cable break in a live network, showing promise for real-time monitoring and proactive network management.
Researchers at Aston University have discovered that aging skin exhibits distinct optical properties under polarised laser light. This finding could lead to the development of non-invasive light-based techniques for early detection and monitoring of skin conditions, including cancer.
Researchers from Hebrew University of Jerusalem have successfully integrated single-photon sources onto tiny chips at room temperature using a hybrid metal-dielectric bullseye antenna. This innovation enables efficient back-excitation and front coupling of emission to optical fibers or low numerical aperture optics, promising advanceme...
Scientists have created a low-cost imaging device suitable for endoscopic screening programs, offering excellent contrast between healthy and malignant tissue. The new system uses ultraminiature spatial frequency domain imaging technology to detect cancerous lesions with high specificity and sensitivity.
A team of scientists developed a method using Bessel beam illumination to measure the internal structure of seven-core fibers with high precision. The approach provides sharper fibre core patterns and higher image contrast compared to traditional methods.
Researchers have developed a novel optical neural network architecture that achieves nonlinear optical computation by precisely controlling ultrashort pulse propagation in multimode fibers. This approach streamlines the need for energy-intensive digital processes, achieving comparable accuracy with significantly reduced parameters.
Scientists from the Stiller Research Group have successfully cooled the temperature of a sound wave in an optical fiber to 74K (-194C), reducing phonon number by 75%. This achievement brings researchers closer to bridging the gap between classical and quantum mechanics.
A team of researchers at Ghent University and imec developed a silicon photonic temperature sensor that measures up to 180°C. The sensor was realized in the framework of the European SEER project, where partners focus on integrating optical sensors in manufacturing routines for composite parts.
Researchers used a fiber optic cable to study the Arctic seafloor's seismic structure and temperature. They identified areas with large amounts of ice and detected changes in temperature over seasons, which will help understand global climate change.
The researchers successfully created a stable hybrid laser by 3D printing micro-optics onto fibers, reducing the size and cost of traditional lasers. The new design enables high-power laser sources with compactness and robustness, opening up opportunities for applications such as autonomous vehicles, medical procedures, and lithography.
The study found that 3D integration can lead to significant heat spreading and crosstalk, reducing heater efficiency by up to -43.3% and increasing thermal crosstalk by up to +44.4%. However, optimizing design variables, such as spacing between µbumps and interconnect linewidth, can minimize the thermal penalty of 3D integration.
A new proof-of-concept study demonstrates the use of distributed fiber optic sensing to detect and analyze the sound of periodical cicadas. The technology shows promise for charting the populations of these famously ephemeral bugs, with potential applications in monitoring insect abundance across seasons and years.
Researchers from NICT and partners demonstrated a record-breaking data-rate of 22.9 petabits per second using a single optical fiber, more than double the previous world record. The achievement showcases the potential for ultra-large capacity optical communication networks.
Scientists at ETH Zurich develop a novel method to measure seismic tremors using fibre-optic networks' active noise suppression systems. The technique enables accurate earthquake measurements even on the ocean floor and in regions with limited resources.
Scientists from UniSA, UoA and Yale University successfully scale up power in fibre lasers by three-to-nine times while maintaining beam quality. This breakthrough could have significant implications for remote sensing, gravitational wave detection and the defence industry.
Researchers have successfully addressed and detected single rare-earth ions within an ensemble of atoms in a nanoparticle, enabling efficient light-matter interaction. This discovery brings researchers closer to creating a robust system for low-loss and fast interface between nodes of the future quantum internet.
Researchers at CUNY Graduate Center design stadium-shaped cavity to study and control light's complex behavior. By adjusting light intensity and delay, they demonstrate coherent control using reflectionless scattering modes, paving the way for better energy storage, computing, and signal processing.