Articles tagged with Waveguides
Researchers developed a material that can shrink the diameter of waveguides and control waveguide characteristics with unprecedented flexibility. The conformal coating solves crosstalk and blockage problems, enabling smaller waveguides to be more closely bundled.
Researchers demonstrate method for multiplexing data carried on terahertz waves, transmitting two real-time video signals at an aggregate data rate of 50 gigabits per second. The terahertz multiplexer uses a waveguide with metal plates to separate data streams based on frequency and angle.
Researchers at MIT have developed a new terahertz laser design that boosts the power output of chip-mounted lasers by 80 percent, opening up new possibilities for medical and industrial imaging and chemical detection. The device has been selected by NASA for its Galactic/Extragalactic ULDB Spectroscopic Terahertz Observatory mission.
Optical isolators are crucial for signal routing and protection in photonic circuits. Researchers demonstrated complete optical isolation within any dielectric waveguide using a simple approach without magnets or magnetic materials. The technique achieves ideal characteristics such as zero loss and perfect absorption, expanding on-chip...
Researchers developed a technique to efficiently control light in waveguides by decorating them with nano-antennas, achieving record-small footprints and broad wavelength ranges. This innovation has the potential to transform optical communications and signal processing, enabling faster and more powerful optical chips.
Researchers develop low-cost fabrication process using low-power laser etching to create polymer waveguides, enabling integration of optical sensing onto lab-on-a-chip devices. The new technique also shows promise for other applications requiring precision microstructuring.
Researchers developed a theory to predict noise caused by amplifying photonic and plasmonic signals in nanoscale optoelectronic circuits. This prediction can help evaluate ultimate data transfer rates and discover fundamental limitations on bandwidth of nanophotonic interfaces.
Researchers have successfully fabricated a millimeter-sized chip capable of splitting a beam of X-rays. The chip features fork-shaped channels that efficiently transport and split the beam, producing interference patterns similar to those in classical Young's double-slit experiments.
Brown University researchers have developed a variable broadband power splitter for terahertz radiation, which could enable data transfer up to 100 times faster than current cellular and Wi-Fi networks. The device can split signals into multiple channels with varying power levels, making it suitable for use in terahertz routers.
A team of researchers from Karlsruhe Institute of Technology (KIT) has developed a compact, miniaturized switching element that converts electric signals into clearly defined optical signals. The innovation uses integrated carbon nanotubes and nanostructured waveguides to generate narrow-band light in the desired color on the chip.
PTB researchers have developed a laser-based vector network analyzer (VNA) for precise and cost-effective high-frequency measurements. The new method enables frequency-resolved scattering parameter measurements on planar waveguides up to 500 GHz with a 500 MHz frequency spacing.
Square optical microresonators support whispering-gallery modes, suitable for unidirectional microlasers. Microsquare lasers offer better modulation behaviors and higher output power than microdisk lasers. Mode selection is achieved by adjusting the output waveguide width, enabling continuous tuning of lasing wavelength.
MIPT researchers have developed a new method to eliminate energy losses of surface plasmons in optical devices, paving the way for high-performance optoelectronic chips. By pumping extra energy into surface plasmon polaritons, they can compensate for propagation losses and increase integration density.
Researchers at the Lawrence Berkeley National Laboratory have discovered a new route to ultrahigh density, ultracompact integrated photonic circuitry. By applying mathematical concept 'adiabatic elimination' to optical nanowaveguides, they can effectively control pulses of light in closely packed waveguides, eliminating the crosstalk p...
The new sensor can track changes in mass of a few kilodaltons in real time, enabling early diagnosis of diseases like cancer. It detects biological objects, such as viral disease markers, through cantilever oscillations, making it a highly sensitive and scalable technology.
Scientists from Lehigh University, Japan and Canada demonstrate the 'world's first fully functioning single crystal waveguide in glass' for all-optical data transmission. The breakthrough enables compact and multifunctional photonic integrated circuits with high density of components and opportunities for new technologies.
Physicists at Jena University successfully simulated charged Majorana particles, a theoretical concept long considered impossible. The experiment allows for the study of non-physical processes and may lead to breakthroughs in quantum computing.
Researchers at Rutgers University and NIST have developed a technology that can create optical switches with sub-square-micron footprints, allowing for densely packed chip fabrics. The new devices use modulated light signals to switch between different states, offering a promising alternative to existing technologies.
Researchers at BYU and MIT develop a new technology using surface acoustic waves to control light's angle and color composition, enabling inexpensive holographic video displays. The team's approach reduces costs and opens up possibilities for large-scale room-sized displays.
The team designs 'digital' metamaterials composed of two materials with positive and negative permittivity values, enabling the creation of flat lenses, hyperlenses, and waveguides. By carefully arranging these materials, they can produce bulk metamaterials with nearly any desired permittivity value.
Scientists at the University of Maryland have successfully created air waveguides that can guide light beams over long distances without loss of power. This breakthrough has significant implications for various applications, including long-range laser communications, pollution detection, and topographic mapping.
Researchers developed a filtering device for ultra-cold neutral atoms based on tunnelling, enabling efficient and robust transport. The technique can be applied to various high-precision applications like quantum metrology and quantum simulation.
Researchers have developed laser-written light-guiding systems for efficient commercial use. The technology allows embedding sensors, including temperature and biometric sensors, into Gorilla Glass to create new real estate in phones. This could enable secure transactions using infrared light and more compact devices.
Researchers at Caltech discovered that surface plasmons exhibit quantum interference, similar to photons. This finding has potential implications for quantum computing and the development of new materials. The study validated theoretical predictions and demonstrated the coherence of plasmon waves.
Engineers have developed a multilayered waveguide taper array that can absorb light across different frequencies, boosting the efficiency of solar power and thermal energy recycling. This technology has potential applications in stealth technology and waste heat recycling.
A team of Belgian researchers successfully developed a stretchable optical interconnection that can be bent and stretched without losing its light-gathering ability. The new material consists of a transparent core surrounded by a lower refractive index layer, which traps light and causes it to propagate along its length.
Researchers at MIT propose a new graphene-based system that controls surface plasmons to increase device density and speed. The system may enable high-speed optical signal processing and improved ferroelectric memory devices.
Researchers at MIT's Media Lab have developed a new approach to generating holograms that could enable the creation of color holographic-video displays. The technique uses an optical chip, resembling a microscope slide, built for about $10, which can produce high-resolution video images up to 30 times per second.
Researchers developed a hyperbolic metamaterial waveguide to catch a 'rainbow' of wavelengths, halting and absorbing each frequency of light. This advancement could lead to new technologies in electronics, solar panels, and stealth coating materials.
Researchers at Caltech developed a new waveguide that channels light and focuses surface plasmon polaritons to achieve nanoscale precision. The device has the potential to revolutionize biological imaging and computer storage by allowing for high-resolution maps of molecules and increased memory capacity.
Researchers at the University of Minnesota have developed a unique microscale optical device that can amplify optical signals, potentially increasing internet download speeds and reducing power consumption. The device uses the force generated by light to control a mechanical switch, enabling high-speed data transmission.
A new coupled normal mode method is presented to solve range-dependent propagation problems in underwater acoustics. The proposed method is accurately validated through comparison with analytical solutions and demonstrates high computational efficiency.
A Chinese team has developed a theoretical model for multiple solitary optical waves, also known as dark photovoltaic spatial solitons, which induce waveguides and can reconfigure optical beams by splitting them. The findings confirm previous research on the behavior of these solitons in photorefractive crystals.
Researchers have demonstrated the first true nanoscale waveguides for next-generation on-chip optical communication systems, enabling ultrafast data transfer. The use of hybrid plasmon polaritons in a metal-insulator-semiconductor device reduces optical losses and increases signal confinement.
Intel Corporation showcased its 50Gbps Silicon Photonics Link prototype, the world's first silicon-based optical data connection, at IPR. The link achieved speeds of up to 50 gigabits of data per second, surpassing electrical solutions.
Researchers at Cornell University used a tiny beam of light to move a silicon structure up to 12 nanometers, switching its optical properties. This technology could have applications in MEMS and MOMS, where it might be useful for creating tunable filters or preventing silicon parts from sticking together.
Researchers have implemented topological photonic crystals that completely prohibit light wave back-reflections, allowing microwave light to propagate in a one-way structure. This concept may lead to reduced internal connections and improved performance in light-driven circuits.
Biocompatible silk-based optical waveguides have been developed to meet the growing need for photonic components in biomedical applications. These waveguides are fabricated using direct ink writing and can be readily functionalized with active molecules.
Researchers at Purdue University have created a new type of invisibility cloak that works for all colors of the visible spectrum. The device uses a tapered optical waveguide and has been shown to cloak an area 100 times larger than the wavelength of light, making it possible to cloak larger objects.
Researchers have developed an organic material with high optical quality and strong ability to mediate light-light interaction, which can fill the slot between waveguides on integrated optical circuits. This innovation enables fast data processing in all-optical networks, potentially increasing internet speed.
Researchers at NIST have confirmed that underground tunnels can have a frequency 'sweet spot' where signals travel several times farther than at other frequencies. The optimal frequency depends on tunnel dimensions, with a typical subway-sized tunnel finding its sweet spot in the 400 MHz to 1 GHz range.
University of Utah engineers successfully created wire-like waveguides to transmit and bend terahertz radiation, a crucial step towards harnessing its potential for faster computing and communication. This breakthrough could lead to the development of superfast computers that can process data at trillions of cycles per second.
A team of researchers from Ames Laboratory has developed a novel add-drop filter using three-dimensional photonic crystals, which enables efficient sorting and distribution of multiple wavelength channels over optical fibers. The technology promises to enhance data transmission with near 100% efficiency.
Researchers at the University of Illinois have achieved optical waveguiding of near-infrared light through self-assembled, three-dimensional photonic crystals. By using multi-photon polymerization and a laser scanning confocal microscope, they created optically active crystals that can produce low-loss waveguides and low-threshold lasers.
A new design for a 'lab-on-a-chip' structure enables the sorting of particles using light, achieving higher efficiencies and lower costs than current methodologies. Velocities as high as 28 μm/s were achieved for small spheres with low optical powers.
A team of researchers created a broadband light amplifier on a silicon chip, enabling amplification over a broad range of wavelengths. The device uses four-wave mixing and has potential applications in repeaters, routers, and signal regeneration for fiber-optic communications.
Researchers at UC Berkeley have developed a biologically-inspired artificial compound eye that can capture visual or chemical information from a wider field of vision than previously possible. The eyes integrate microlens arrays with self-aligned, self-written waveguides, enabling low-cost and easy-to-replicate fabrication.
Researchers at Georgia Tech have developed a prototype handheld gas phase chemical sensing device and a liquid phase sensing device using small quantum cascade lasers. The devices can detect levels of chemicals as low as 30 parts-per-billion, enabling fast response times for applications such as breath diagnostics and water monitoring.
Scientists at UC Santa Cruz have successfully guided light waves through liquids and gases using novel waveguides made from silicon fabrication technology. The device enables detection of molecular fluorescence and has potential applications in fields such as chemistry, biology, and quantum optics.
The Nanophotonics Group at Cornell University has developed tools to guide and switch light in low-index materials, including air or a vacuum. This technology enables the use of a wide variety of low-index materials, including polymers, and could speed up the day when home use of fiber-optic lines becomes practical.
Researchers at CU-Boulder created more efficient 'soft' x-ray light in the water-window region using a femtosecond laser, making it possible to build compact microscopes for biological imaging. This advance could visualize processes within living cells and understand how pharmaceuticals function.
Theoretical waveguide may create fast, high-bandwidth conduit for today's Internet applications. The all-dielectric coaxial cable could lead to significant miniaturization of integrated optical devices.