Articles tagged with Optical Devices
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Scientists at Chalmers University of Technology have successfully combined nonlinear and high-index nanophotonics in a single nanoobject, creating a disk-like structure with unique optical properties. The discovery has great potential for developing efficient and compact nonlinear optical devices.
Researchers predict the existence of a new type of exciton with finite vorticity, called a 'topological exciton,' in Chern insulators. This prediction has the potential to enable the development of novel optoelectronic devices for quantum computing.
Researchers developed a new 2D quantum sensing chip using hexagonal boron nitride that can simultaneously detect temperature anomalies and magnetic fields in any direction. The chip is significantly thinner than current quantum technology for magnetometry, enabling cheaper and more versatile sensors.
Researchers developed a novel tunable ultrasonic liquid crystal light diffuser that allows changing the diffusion direction. The device uses non-coaxial resonant flexural vibration to control molecular orientation and refractive-index distribution, resulting in controlled light distribution.
Researchers developed OptoGPT, an algorithm that designs optical multilayer film structures for various applications. It produces designs in 0.1 seconds and contains six fewer layers on average compared to previous models.
A new camera system called PrivacyLens can replace people in images with generic stick figures, protecting their identities and reducing unnecessary surveillance. This technology could prevent embarrassing photos from being shared online and make patients more comfortable using cameras for chronic health monitoring.
The University of Maryland team created a camera mechanism that mimics the involuntary movements of the human eye, resulting in sharper and more accurate images. The Artificial Microsaccade-Enhanced Event Camera (AMI-EV) has implications for robotics, national defense, and industries relying on accurate image capture.
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 at Osaka University have developed systematically designed molecules that absorb near-infrared light but not visible light, paving the way for new applications in electronics. The new compounds show promise in areas such as solar cells, transistors, chemotherapy, and photodetectors.
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.
Scientists developed a miniaturized micro-spectrometer to detect multiple toxic and greenhouse gases, offering increased control over individual exposure. The technology uses machine learning and metasurface spectral filter arrays to create a compact sensor that can be integrated into wearable devices.
Researchers at TMOS have developed a new infrared filter thinner than cling wrap, which can be integrated into everyday eyewear, allowing users to view both visible and infrared light spectra. This breakthrough miniaturizes night vision technology, opening up new applications in safety, surveillance, and biology.
Researchers at the University of Rochester developed a new microcomb laser design that provides low power efficiency, high tunability, and easy operation. The simplified approach enables direct control over the comb with a single switch, opening up potential applications in telecommunications systems, LiDAR for autonomous vehicles.
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.
Scientists at Harvard John A. Paulson School of Engineering and Applied Sciences have developed a compact, single-shot polarization imaging system that can provide a complete picture of polarization. The system uses two thin metasurfaces to capture the most complete polarization response of an object in real-time.
Researchers pioneer technique to control polaritons, unlocking potential for next-generation materials and surpassing performance limitations of optical displays. The breakthrough enables stable generation of polariton particles with enhanced brightness and color control.
The researchers achieved 20-level intermediate states of phase change materials using a micron-scale laser writing system. This allows for the demonstration of ultra-high flexibility in phase modulation and potential applications in neuromorphic photonics, optical computing, and reconfigurable metasurfaces.
Researchers have developed a miniaturized optical sensor that can detect glucose levels in human blood plasma with comparable sensitivity to laboratory-based sensors. The device operates wirelessly using a coin battery and has demonstrated its viability in detecting glucose levels between 50-400mg/dL.
Researchers from Osaka University have developed a soft, flexible, and wireless optical sensor based on carbon nanotubes and organic transistors formed on ultra-thin polymer film. The sensor has high sensitivity over a wide range of wavelengths and can work even after being crumpled into a ball.
Researchers at the University of Michigan have developed blue phosphorescent OLEDs (PHOLEDs) that can maintain 90% of their blue light intensity for 10-14 times longer than other designs, making them potentially commercially viable. This breakthrough could enable the widespread use of blue PHOLEDs in OLED displays and lighting.
Researchers have developed a new optical device that overcomes dispersion limitations in ultra-low-loss silicon nitride by creating conjoined microcombs. This breakthrough enables the production of short-pulse microcombs with low power consumption, paving the way for integration into handheld devices and photonic circuit arrays.
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.
Researchers have developed high-performance ultrafast lasers on nanophotonic chips, enabling compact devices for GPS-free precision navigation, medical imaging, food safety inspection and other applications. The new technology has the potential to enable futuristic chip-scale atomic clocks, biological imaging and more.
Researchers have developed a new form of microscopy that can probe details in an object's surface using evanescent waves. The technique, which detects radiation emitted by the object itself, has been used to examine thermally excited evanescent waves in dielectric materials with nanoscale precision.
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.
Scientists at the University of Nebraska-Lincoln have developed a system that can adjust the size, shape, and refractive index of microscopic lenses in real-time. The design uses hydrogels and polydimethylsiloxane to create a dynamic platform for soft robotics and liquid optics applications.
Researchers create practical way to implement superlensing with minimal losses, breaking through diffraction limit by nearly four times. The method allows scientists to improve super-resolution microscopy, advancing imaging in fields like cancer diagnostics and archaeology.
Osaka University researchers created a radial-coded mask that replaces conventional masks, yielding sharp images at various distances. The optimized mask design extends the depth of field, enabling better focus on both foreground and background objects.
Researchers at Rice University have discovered a metal oxide that can enable terahertz technology for quantum sensing. The material, strontium titanate, exhibits unique properties that allow it to interact strongly with terahertz light, forming new particles called phonon-polaritons.
Fiber sensing scientists from Shenzhen University have developed an encrypted fiber optic tag that can be used for all-optical labeling and recognition of optical transmission channels. The team proposed a method using fiber Bragg grating arrays prepared by femtosecond laser direct writing to flexibly store different coding sequences.
Researchers have developed a groundbreaking photonic integrated circuit chip that combines light source, modulator, photodiode, waveguide, and Y-branch splitter on a single substrate. The GaN-on-silicon platform reduces fabrication complexity and cost, enabling compact and high-performing devices.
Optical memristors have the potential to transform high-bandwidth neuromorphic computing, machine learning hardware, and artificial intelligence. However, scalability is a significant challenge that needs to be addressed to unlock their full potential.
Researchers have created a 19-core optical fiber with a standard cladding diameter, achieving a record transmission capacity of 1.7 petabits per second over 63.5 km. This design uses randomly coupled multi-core fibers and MIMO digital signal processing to minimize power consumption.
Researchers demonstrate probabilistic computing's capabilities by simulating networks of stochastic nanodevices to solve specific NP problems. The simulations agree with theoretical solutions, indicating the potential for scaling up this approach.
Scientists have created a novel method to fabricate miniature optical fibers (MNFs) with high precision and minimal loss. The technique utilizes plasmonic heaters embedded in metal plates to heat the fibers, eliminating the need for bulky components like translation stages or flame burners.
Researchers developed a miniaturized viscometer using GaN optical device and bendable strip, achieving an ultra-wide viscosity range of 10^0 - 10^6 mPa·s. The viscometer demonstrated real-time monitoring capabilities and low sample consumption, making it suitable for practical applications.
Researchers from University of the Witwatersrand developed a new approach to studying complex light in complex systems. They found distortion-free forms of structured light that emerge undistorted from noisy channels, unlike other forms of structured light which become unrecognizable. This breakthrough has the potential to pave the wa...
Researchers developed a self-powered nanowire sensor that can detect nitrogen dioxide in the air without power source. The sensor has potential applications in environmental monitoring, healthcare, and industrial safety.
Researchers at the University of Tsukuba have developed an optoelectronic resonator that enhances the sensitivity of an electron pulse detector, allowing for ultrafast electronic characterization of proteins or materials. This breakthrough may aid in the study of biomolecules and industrial materials.
Researchers at Chalmers University have developed an optical hydrogen sensor that can detect extremely low levels of hydrogen, allowing for early detection and alarm. The sensor uses AI technology to optimize particle arrangement and geometry, achieving sensitivity in the parts per billion range.
Scientists successfully transmit and switch 15-mode multiplexed signals over a 6.1 km long multi-mode fiber ring in Italy, demonstrating a new approach to increasing fiber network capacity. This achievement is significant for future communication systems beyond 5G.
Researchers studied diatom shells to understand how they perform photosynthesis in low-light conditions. They found that the frustule can contribute a 9.83% boost to photosynthesis, especially during transitions from high to low sunlight.
Harvard scientists create a high-performance on-chip femtosecond pulse source using a time lens, enabling broadband, high-intensity pulse sources. The device is highly tunable, integrated onto a small chip and requires reduced power compared to traditional table-top systems.
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 at MIT have developed a new approach to identify topological materials using machine learning and X-ray absorption spectroscopy. The method is over 90% accurate in identifying known topological materials and can predict properties of unknown compounds.
The researchers used a 3D laser printing approach to create high-quality, complex polymer optical devices directly on the end of an optical fiber. The device turns normal laser light into a twisted Bessel beam with low diffraction and can be used for applications like STED microscopy and particle manipulation.
Researchers developed a silicon photodiode array for in-sensor processing, allowing for real-time image filtering and extraction of relevant visual information. The technology has potential applications in machine vision, bio-inspired systems, and intelligent imaging devices.
Customized fibers have been engineered to generate Bessel beams, opening up new applications in imaging and communications. The fibers use a technique called two-photon lithography to fabricate special beam-shaping elements, enabling the creation of compact Bessel beam generators.
Researchers have created a new glass-ceramic that emits light in response to mechanical stress, enabling potential applications for monitoring stress in artificial joints and structures.
Researchers at City University of Hong Kong have successfully developed a novel Vacuum Ultra-Violet (VUV) meta-lens, which can generate and focus the VUV light. The focused VUV light source enables nanolithography, material processing, and advanced manufacturing applications.
Recent research reviews progresses in miniaturized spectrometers, focusing on integrated spectrometers with CMOS-compatible integration platforms. The authors establish performance benchmarks and discuss technological advancements in wavelength de-multiplexing and multiplexing-based spectrometers.
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 at Harvard John A. Paulson School of Engineering and Applied Sciences have developed a single-material diamond mirror that withstood a 10-kilowatt Navy laser without damage. The mirror's unique nanostructure design makes it 98.9% reflective, potentially enabling more robust high-power lasers for various applications.
A new approach using artificial intelligence generates designs automatically, allowing researchers to create complex metasurfaces with billions of nanopillars. This enables the development of larger, more complex metalenses for virtual reality and augmented reality systems.
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.
Scientists at IIT realized coupled light vortices forming an ordered structure, a light crystal. They developed metasurfaces to control laser beams and created 100 light vortices with tunable topology, enabling new properties for optical communications and simulations of complex systems.
Scientists at Stanford University have created a stretchy display that can change shape in response to user interaction. The display uses elastic light-emitting polymers and has a maximum brightness two times that of a typical cellphone, allowing it to be stretched up to twice its original length without tearing.
Scientists have created a flexible, multipoint microLED array film that enables simultaneous optical stimulation at specific or multiple regions in the brain. The technology has potential broader applications in neuroscience research and could lead to new understanding of brain function and behavior.
Researchers developed a metasurface attachment that can turn any camera into a polarization camera, capturing light's polarization at every pixel. This innovation benefits various fields like face recognition, self-driving cars and remote sensing, revealing hidden details and features.
Researchers created a dental tool that measures plaque acidity using an LED light and FDA-approved chemical dye, providing dentists with early warning signs of cavity development. The device can help limit the need for specific harmful bacteria tests and educate patients about sugar's impact on oral health.