Articles tagged with Fiber Optics
Researchers have developed hollow-core fibers that can preserve light's essential attributes over long distances, overcoming challenges in optical interferometric systems and sensors. The technology has the potential to enhance performance in applications such as gravitational wave sensing and inertial navigation.
Researchers at KAUST developed a cost-effective approach to detect red palm weevil infestation using laser pulses and optical fibers. The system can identify larvae as young as 12 days old and provide noninvasive, 24/7 monitoring of large-scale farms.
A recent study used fiber optic cables to capture seismic signatures of the Rose Parade, capturing the vibrations of marching bands and floats. The technique, called distributed acoustic sensing (DAS), revealed distinct signals from the parade, including harmonic frequencies corresponding to even-stepping marching bands.
Scientists have developed an all-fiber optical wavelength converter using few-layer gallium selenide (GaSe) nanoflakes, enhancing efficiency by over four orders of magnitude compared to traditional microfibers. The converter can operate in a wide wavelength range, covering C, L telecom bands and the O band, with minimal power consumption.
Researchers developed a new design to reduce energy loss in optical fiber communications by radiating light in a single direction. This breakthrough has the potential to improve data communications for commercial data centers and enable battery-powered photonic computers.
Researchers successfully demonstrated high-capacity transmission of 172 terabit/s over 2040km using a standard outer diameter coupled-3-core optical fiber. This achievement more than doubles the current world record and paves the way for early adoption in backbone high-capacity transmission systems.
Researchers demonstrate the potential for using existing optical fibers as seismic sensors, providing high-resolution maps of shallow subsurface and validating a new technique. The approach has great potential for use in large earthquake-threatened cities with extensive networks of buried optical cables.
Researchers at Berkeley Lab are developing fiber optic sensors to monitor offshore wind operations and underground natural gas storage. These sensors aim to detect issues such as gearbox failure and marine mammal activity, improving the reliability and safety of these systems.
Researchers at the University of Würzburg have discovered a new quantum state of matter that enables light to be accumulated at a specific point in an optical fiber. This effect, known as a 'light funnel', has the potential to improve the sensitivity of optical detectors and unlock new technological applications.
Researchers demonstrate chip-based devices that enable secure quantum key exchange over long distances, reducing size and power needs while maintaining high-speed performance. The new platform facilitates citywide networks and will eventually support complex communication protocols.
Researchers explore alternative materials to improve optical fiber's data transmission capabilities, as telecom demands grow. They discovered fluoride glass can transmit light over a wider range of wavelengths, but it is more expensive and brittle.
Researchers have demonstrated a significant leap in hollow-core fibre performance, enabling faster data transmission rates and reducing latency. The new technology has shown a 50% reduction in attenuation and a doubling of maximum transmission length compared to conventional glass fibres.
Researchers in Japan have developed a low-noise fiber link to connect high-precision clocks, enabling the creation of powerful networks for applications like earthquake detection and communication systems. The system uses a cascaded link with ultralow-noise laser repeater stations to minimize noise and stabilize the laser signal.
A breakthrough in optical fiber sensors has enabled the measurement of refractive index outside the cladding of standard fibers, addressing a decades-long challenge. The new concept uses Brillouin dynamic gratings to create acoustic oscillations within the core, allowing for precise measurement and spatially-distributed analysis.
Researchers at Stanford University have developed a trick to precisely control photons, the basic particles of light. This breakthrough enables the creation of light-based chips that could deliver far greater computational power than electronic chips.
Researchers have successfully demonstrated a world record transmission capacity of 10.66 peta-bit per second over a 38-core 3-mode optical fiber, achieving a spectral efficiency of 1158.7 bits per second per Hz. This breakthrough enables a drastic increase in data-rate per fiber for intra- and inter data-center communication.
The study proposes smart data chip circuits that consume up to 10 times less energy than conventional chips. Researchers also developed an optimisation algorithm to control fibre optic communications at the network level, reducing energy consumption by up to 70%.
Researchers successfully demonstrated the transport of an entangled state between an atom and a photon via an optic fiber over a distance of up to 20 km. This achievement sets a new record for quantum communication and confirms that quantum information can be distributed on a large scale with little loss.
A team from Wits and HUST shows that multiple quantum patterns of twisted light can be transmitted across a conventional fibre link, enabling a new approach to realising a future quantum network. The researchers demonstrated transfer of multi-dimensional entanglement states over 250m of single-mode fibre.
Researchers at IBS have engineered a new biological tool that controls calcium signaling in the brain of mice using blue light. The study found that this non-invasive approach triggers memory and emphatic fear responses, indicating its potential for studying Ca2+ signaling and its role in neurodegenerative diseases.
The new sensor detects hydrogen molecules at concentrations below 2%, outperforming traditional methods that require expensive equipment and trained personnel. Its sensitivity and resistance to interfering gases make it a game-changer for remote hydrogen leak detection.
Researchers have transformed submarine cables into a seismic network, tracking earthquakes and ocean waves. The new technology has the potential to fill blind spots in the global seismic network.
Scientists have successfully detected seismic waves using submarine telecommunications cables, which can also detect earthquakes, swell, and underwater noise. The researchers deployed a 41 km-long cable to retrieve data from an underwater observatory, converting it into over 6000 seismic sensors.
Researchers successfully transmitted a signal over 520 km at 200 Gbps using commercial cables and stimulated Raman scattering effect, increasing signal-to-noise ratio. The system uses remote optically pumped amplifiers to amplify the signal along the link without electrical power sources.
Researchers at Penn State used fiber-optic cables to detect tiny seismic events caused by thunder during a storm, marking the first time scientists have recorded thunder-induced seismic events.
Researchers used a fiber optic network to detect thunderquakes, allowing them to track lightning storms and potentially image the Earth's interior. The study found that fiber optic cables can pick up a wider range of frequencies than traditional seismometers.
Scientists are exploring the use of fiber optic cables as earthquake sensors due to their potential for accurate seismic data collection. Distributed Acoustic Sensing (DAS) technology uses internal flaws in fibers to detect changes in temperature, strain, or vibrations caused by seismic waves.
Researchers at VTT created an optical fibre from cellulose, suitable for measuring moisture levels in buildings. The cellulose-based fibre absorbs and releases water, allowing for accurate measurements.
Researchers used fiber-optic cables to create a seismic network that can detect earthquakes and map fault zones. The technique, known as Distributed Acoustic Sensing, uses laser light to measure strain in the cable, providing detailed images of the ocean floor.
Researchers used existing underwater fiber optic cables to create an array of seismic sensors, mapping a previously unknown fault system off California's coast. The technique, known as Distributed Acoustic Sensing (DAS), allows for unprecedented detail in monitoring seafloor seismic activity and potential offshore resources.
A new project by University of Limerick aims to deliver more effective brachytherapy cancer treatment through advanced real-time radiation dose imaging and source localisation. The Origin project has the potential to reduce treatment errors in prostate and gynaecological cancers by up to 55%.
Researchers from Istituto Italiano di Tecnologia, University of Salento, and Harvard Medical School have developed a new light-based method to capture and pinpoint the epicenter of neural activity. The approach allows for novel ways to map connections across different brain regions.
A new particle analysis technique offers a promising way to monitor air pollution by capturing and analyzing individual airborne particles. The approach provides highly reproducible, real-time results and can identify the size and refractive index of particles, which is essential for assessing health risks.
The researchers developed a method to print silica optical fibers using additive manufacturing, eliminating the need for precise core centering. This allows for the creation of complex fiber designs and applications, such as fiber optic sensors, with reduced costs and improved longevity.
The National Institute of Information and Communications Technology (NICT) has developed a large-scale optical switching testbed capable of handling 1 Petabit per second optical signals. This breakthrough demonstrates the feasibility of ultra-high capacity petabit-class backbone networks, which can support increasing internet services ...
Researchers at Cornell University have developed a stretchable optical lace material that enables soft robots to sense their environment through mechanosensors. The material allows robots to detect changes in stress and strain, enabling them to adjust their actions accordingly.
Scientists at EPFL have developed perfect soliton crystals in optical microresonators, allowing for the generation of pulse trains with high repetition rates and enhanced power. This breakthrough enables applications in spectroscopy, distance measurements, and low-noise terahertz radiation.
The new self-calibrating endoscope produces 3D images of objects smaller than a single cell, opening new opportunities for medicine and research. The device measures just 200 microns across and enables minimally invasive access and high-contrast imaging.
Engineers at the University of Illinois have found a way to redirect misfit light waves to reduce energy loss during optical data transmission. By exploiting an interaction between light and sound waves, they were able to suppress backscattering in silica glass, a common material used in fiber optic cables.
A team of seismologists from Caltech is tracking thousands of tiny aftershocks in the Ridgecrest region using a novel fiber optic network. This technique involves shooting light down unused fiber optic cables, which act as individual seismometers, allowing for unprecedented detail on the evolution of earthquake sequences.
Researchers developed new accelerometers to measure acceleration and vibration on trains, enabling real-time monitoring of track or train problems. The sensors use polarization-maintaining photonic crystal fiber and can detect frequencies double that of traditional accelerometers.
A tiny fibre-optic sensor has the potential to save lives in open heart surgery and during surgery on pre-term babies. The continuous cardiac flow monitoring probe is a safe way to give real-time measurement of blood flow.
Engineers at the University of California, Riverside, have developed a new technology that tunnels light into the quantum realm with unprecedented efficiency. The device integrates a glass optical fiber with a silver nanowire condenser to squeeze visible light to the tip of the condenser and interact with molecules locally.
Researchers at NTNU have developed a method to make optical fibers using gallium antimonide, which can emit infrared light, allowing for longer wavelengths and improved transmission. This could lead to better medical diagnoses and more precise environmental monitoring.
Researchers at RMIT University have developed a new technique to produce microscopic 3D images of tissue inside the body using existing optical fibre technology. This approach enables clinicians to examine living tissue in real-time, paving the way for minimally-invasive 3D optical biopsies.
Researchers at NICT and Furukawa Electric successfully demonstrated a record SDM transmission experiment, achieving 715 Tb/s over 2009 km using a 19-core optical amplifier. The demonstration showcases the potential of high-core count cladding pumped EDFAs for long-haul transmission in both C and L bands.
A new approach enables the smooth navigation of photons through complex optical fiber obstacle courses, preserving entanglement and correlation. This breakthrough boosts expectations for quantum key distribution (QKD) technology, which uses signals in particles of light to create encryption keys.
Researchers develop AI algorithm to optimize traffic management in optical telecommunications networks, increasing efficiency by 30%. The new approach uses deep reinforcement learning and can learn autonomously without prior knowledge.
Researchers have found a way to exploit multicore fiber technology to solve the encryption problem in secure data transmission. The approach uses dedicated cores of a multicore fiber to avoid noise generated by core-to-core crosstalk, allowing for up to 341 QKD channels.
Researchers have developed an integrated silicon photonic switch capable of processing 240 inputs and 240 outputs simultaneously, achieving the lowest signal loss ever reported. The device, measuring 4cm x 4cm, surpasses previous records by nearly doubling the size of existing silicon photonic switches.
A team of researchers from Infinera achieved a record efficiency for data transfer in the MAREA transatlantic fiber optic cable, nearly doubling its capacity to 26.2 terabits per second. The method uses 16QAM modulation and extends record-setting capacity across longer distances without requiring new cables.
Researchers created quantum-correlated pairs made up of one visible and one near-infrared photon, combining the best of both worlds. This breakthrough promises to boost light-based circuits' ability to securely transmit information over long distances.
Researchers at UC Santa Barbara have successfully created a chip-scale laser that emits light with a fundamental linewidth of less than 1 Hz, quiet enough to move demanding scientific applications to the chip scale. This breakthrough uses stimulated Brillouin scattering to produce extremely quiet light and has significant implications ...
Researchers at Bar-Ilan University have successfully mapped liquids outside coated optical fibers, enabling sensing applications beyond the lab. The use of a polyimide coating overcomes the protective barrier previously hindering sensor performance.
Researchers at the University of Copenhagen have developed a new technique to improve the storage time of quantum states in optical fibers, enabling secure quantum information transmission over longer distances. This breakthrough enables the creation of a completely secure quantum communication network by teleporting quantum informatio...
New insight into opto-mechanics of optical fibers can be applied to sensor systems with longer reach, higher spatial resolution, and better precision.
The new modulator enables efficient and low-cost high-frequency microwaves transmission, covering the last mile with high data rates, and is compatible with 5G technology and future industry standards.
Researchers have created a new air-filled optical fiber bundle that can improve endoscopes used in medical procedures like minimally invasive surgeries. The technology allows for higher resolution images at double the wavelength range, enabling diagnostic procedures not possible with current endoscope technology.
Researchers at RMIT University have developed a new nanophotonic device that can encode and process data using twisted light beams, increasing bandwidth by up to 100 times. This technology has the potential to revolutionize optical communications and quantum computing research.
Researchers have developed an optoelectronic interface that uses fiber-optic channels to transmit signals from artificial neurons to live ones, providing galvanic isolation and adaptive stimulation capabilities. This system has been demonstrated effective in stimulating electrophysiological activity of neurons in a surviving section of...