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A Method for Signal Characterization

UCLA researchers in the Department of Electrical and Computer Engineering have developed a method and apparatus to rapidly analyze optical and electrical signals at very high bandwidths while accommodating advanced signal modulation for lower cost and improved energy consumption.

Athermal Nanophotonic Lasers

Researchers at the University of California, Davis have developed a nanolaser platform built from materials that do not exhibit optical gain.

Photonic-Electronic, Real-Time, Signal Processing

Researchers at the University of California, Davis have developed a method for ultra-wideband and highly precise, photonic-electronic, signal processing. This technology is capable of high-speed, real-time signal correlation/processing by exploiting RF-photonics, ultra-stable optical frequency combs and high precision electronics.

Energy Efficient and Scalable Reconfigurable All-to-All Switching Architecture

Researchers at the University of California, Davis have developed a hierarchical optical switch architecture that is low latency and energy efficient.

Multi-Wavelength, Laser Array

Researchers at the University of California, Davis have developed a multi-wavelength, laser array that generates more precise wavelengths than current technologies. The array also delivers narrow linewidths and can operate athermally.

Higher-Speed and More Energy-Efficient Signal Processing Platform for Neural Networks

Researchers at the University of California, Davis have developed a nanophotonic-based platform for signal processing and optical computing in algorithm-based neural networks that is faster and more energy-efficient than current technologies.

Nonreciprocal And Reconfigurable Phased-Array Antennas

Researchers at the University of California, Davis have developed nonreciprocal and reconfigurable phased-array antennas with demonstrated advantages over competing, current technologies.

A Method For Universal Two-Tap Feed-Forward Equalization Using A Differential Element

A fully tunable feed-forward equalizer with simplified addition and inversion operations that use a single differential element.

Ultrafast Optical Transmitters

The widespread adoption of visible light communication (VLC) systems based on light emitting diode (LED) transmitters requires the simultaneous increase in efficiency and speed of the optical source. Efficiency is measured by the external quantum efficiency while speed is quantified by the 3dB modulation bandwidth. Most research on the indium gallium nitride (InGaN) system has focused on improving the EQE because this metric, and its dependence on injection current density is an important factor for the growth of LEDs as illumination source for general lighting purposes. The modulation rate of LEDs is however poised to grow in importance due to the need to couple information processing with illumination. An LED with GHz modulation bandwidth, incorporated as light source in an optical transceiver, can enable a plethora of VLC applications: from chip-to-chip wireless communications in data centers to smart automotive lighting, from safe and RF interference-free wireless local area networks in hospitals and offices to underwater optical communications for the exploration, inspection and maintenance of offshore oil

Light-Emitting Hyperbolic Metasurfaces

Hyperbolic metasurfaces (HMS) merge the exotic properties of hyperbolic metamaterials with the potential for lower losses and better device coupling offered by planar metasurfaces. Despite use of single-crystalline silver (Ag), HMS remain inherently lossy, limiting potential applications. Recent work has suggested that Ag could be combined with indium gallium arsenide phosphide (InGaAsP) multiple quantum wells (MQW) to enable transparent propagation of signals through waveguides and multilayers. Described here is the first experimental demonstration of a luminescent HMS (LuHMS) based on nanostructured (NS) Ag/InGaAsP MQW.  

Energy Radiator Using Strain-Mediated Spin Torque Nano-Oscillator (S-STNO)

UCLA researchers in the Department of Mechanical and Aerospace Engineering have developed an energy radiator based on a spin torque nano-oscillator that does not require the application of an external field.

Method Of Creating Scalable Broadband And Tunable Light Emitter At The Nanoscale Using Layered Black Phosphorus

UCLA researchers in the Department of Electrical and Computer Engineering have developed a novel method to create a room temperature stable broadband tunable light emitter at the nanoscale.

Multi-Tone Continuous Wave LIDAR

Object detection and ranging is a fundamental task for several applications such as autonomous vehicles, atmospheric observations, 3D imaging, topography and mapping. UCI researchers have developed a light detection and ranging (LIDAR) system which makes use of frequency modulated continuous waves (FMCW) with several simultaneous radiofrequency tones for improved speed of measurement while maintaining robust spatial information. 

Spectro-Temporal Lidar

UCLA researchers in the Department of Electrical and Computer Engineering have developed a LIDAR sensor that collects high frame-rate 3D measurements for autonomous vehicle and robotics applications.

Plasma Opening Switch

UCLA researchers in the Department of Physics have developed a plasma opening switch that enables quick diversion of multi-gigawatt pulses to a protective shunt circuit.

Optical Interposers for Embedded Photonics Integration

Researchers at the University of California, Davis and NHanced Semiconductors have developed a new optical interposer solution for embedded photonics that have higher energy efficiency than the current pluggable optics solutions

Polarization mode dispersion-based physical layer key generation for optical fiber link security

Researchers at UCI have developed a novel method for encrypting optical communications, which is simpler, less expensive, and less computationally-demanding than standard solutions.

Security Key Generation Technique for Inter-Vehicular Visible Light Communication

The invention is a technique that provides a novel, reliable and secure cryptography solution for inter-vehicular visible light communication. Through combining unique data as the road roughness and the driving behavior, a symmetric security key is generated for both communicating vehicles. As the data used is unique to the communicating vehicles only, the generated keys are thus unique, securing a reliable communication channel between both vehicles.

Non-Mechanical Multi-Wavelength Integrated Photonic Beam Steering Device

Today, projecting optical energy is performed using high power laser sources coupled to free-space optical systems comprised of mechanical components, moving parts, and bulk optics. Unfortunately, the application range of these legacy systems is limited by their size, weight, reliability and cost. Consequently, a substantial research effort has been directed toward the miniaturization and simplification of these systems. Recent work has focused on beam steering using phased arrays. Although optical phased arrays are an elegant non-mechanical beam steering approach, the technical and environmental challenges compared to RF systems (10,000 times smaller wavelengths and tolerances) are daunting. Multi-octave operation across the UV to LWIR regions with acceptable losses poses additional technical challenge for any optical phased array beam steering approach. For these reasons, a need exists for a non-mechanical beam steering approach that lends itself to miniaturization as well as high power ultra-wideband operation.

Blade Coating On Nanogrooved Substrates Yielding Aligned Thin Films Of High Mobility Semiconductin Polymers

An alternative method of alignment specifically developed for field-effect transistors of organic electronics.

Reduction in Leakage Current and Increase in Efficiency of III-Nitride MicroLEDS

A way to reduce leakage current and increase the efficiency of III-Nitride microLEDs via ALD sidewall passivation. 

Fabrication Method for Side Viewing Miniature Optical Elements with Free-Form Surface Geometry

Researchers at the University of California, Davis have developed a fabrication method for free-form reflective side viewing miniature optical elements to focus and reflect light with minimal chromatic aberrations.

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