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III-V PHOTONIC INTEGRATION ON SILICONTech for Transfer TTO 17-12-2015 Technology for making photonic integrated circuits on silicon by bonding a wafer of III-V material as an active region to silicon and removing the substrate. The coupling between the silicon waveguide and the III-V gain region allows for integration of low threshold lasers, tunable lasers, and other photonic integrated circuits with CMOS integrated circuits. Optoelectronics Semiconductors Tell me more |
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PHOTONICALLY-ENABLED RF TRANSMITTER/RECEIVERTech for Transfer TTO 17-12-2015 This invention provides a photonically-enabled RF transmitter and/or receiver. It includes a detection system comprising a photonic module, an RF module and processing circuitry capable of accurate range measurements. It allows for multiple modes of operation of the system. The carrier frequency, the modulation technique and the processing and/or output that is to be provided by the system can be selected on the fly. It can be set up to support very wide ranges of carrier frequencies that can be modulated and processed in different ways in a relatively rapid fashion. Such a system may also be accurate enough to be useful for subscale radar testing, and be capable enough to be employed in the field. In addition, this system can be used as a flexible, tunable wideband signal generator or frequency source. Remote Sensing Optical Communications Tell me more |
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PHOTONIC CRYSTAL SOLAR CELLTech for Transfer TTO 17-12-2015 This invention presents a photovoltaic cell contained within a photonic crystal structure. It incorporates both photovoltaic and photonic structures into a single unit. The photonic crystal guides and concentrates sunlight into a photonic optical cavity, which is composed of photovoltaic material comprising a semiconductor heterojunction for forming a photovoltaic current. The solar cell is self-focusing in that it utilizes the known property of photonic crystals to propagate light in any direction, provided that the light is within a transmissible band. This property is exploited here to also make the device more efficient by concentrating incoming light into the photovoltaic region. Photovoltaics Photonic Crystals Tell me more |
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CIRCUIT ELEMENT WITH PHOTONIC CORETech for Transfer TTO 17-12-2015 Circuit element with four electrical terminals based on a photonic core inside the circuit that uses a wide bandgap semiconductor material. The wide bandgap material exhibits photoconductivity and allows current flow through the material in response to incident light. Optoelectronics Semiconductors Tell me more |
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PHOTONIC AWG WITH WIDER BANDWIDTHS AND LONGER TIME APERTURESTech for Transfer TTO 17-12-2015 Optical arbitrary waveform generation (OAWG) is a technique where a photonic device is programmed to create the desired output as an optical waveform with an arbitrary modulation format which is specified by the user. Purely electronic AWG is limited in bandwidth while current optical AWG systems suffer from other limitations. This invention provides a new device and method for OAWG capable of using wider bandwidths and extended time apertures. It involves generating a frequency-shifted replica of a first narrowband waveform and a second narrowband waveform, and then combining them to generate a broadband waveform. Optical Imaging and Processing Tell me more |
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LOW-COST, HIGH-QUALITY SINGLE-LAYER PHOTONIC CRYSTAL STRUCTURETech for Transfer TTO 17-12-2015 This invention provides a new method of forming a single-layer photonic crystal structure. It includes a depositing electrophoretic suspension and two separated electrodes formed at the upper and lower parts of a container. An electric voltage is applied to the electrodes to form an electric field, such that particles in the electrophoretic suspension will form a single-layer photonic crystal structure on one of the electrodes by an electrophoresis self-assembly technique. The single-layer photonic crystal structure has a low cost, good quality and recurring property. Photonic Crystals Thin-Film Materials Tell me more |
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PHOTONIC CRYSTAL LASERS FOR CHEMICAL DETECTIONTech for Transfer TTO 17-12-2015 The invention provides the ability to utilize photonic crystal lasers to detect a chemical in an analyte. It utilizes a laser with an open cavity and a photonic crystal lattice structure that defines a suitable geometry for such a cavity. The analyte is introduced directly into a high optical field of the cavity. The cavity is pumped and an emission from the laser is used to detect the presence of the chemical in the analyte. The unique design of the laser cavity geometry (i.e., comprising photonic crystal) in combination with the ability to place the analyte directly into the cavity provides the capability to conduct high-resolution spectroscopy with single-molecule sensitivity. The nanocavity lasers of the invention may be used to perform spectroscopic tests on femtolitre volumes of analyte. Lasers Photonic Crystals Tell me more |
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METAMATERIALS EMPLOYING PHOTONIC CRYSTALSTech for Transfer TTO 17-12-2015 This invention presents a periodic structure within a photonic crystal that includes an array of point defects such that each defect prohibits the propagation of light within a certain frequency range (or band gap) of the periodic structure to exist near each defect. Such structures can be used to construct non-magnetic materials that may function as ferromagnetic or anti-ferromagnetic materials in certain conditions. Photonic Crystals Metamaterials Tell me more |
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PHOTONIC CRYSTAL PRESSURE SENSORTech for Transfer TTO 18-12-2015 The present invention provides a microscale pressure sensor that exhibits high sensitivity in a small form factor. The sensor is a bridged device in which a photonic crystal waveguide, surrounded by a photonic crystal slab, is suspended over a dielectric substrate. Under applied pressure, the photonic crystal waveguide is deflected toward the substrate, causing a decrease in optical transmission across the waveguide due to the coupling of the evanescent field of the guided mode to the dielectric substrate. The waveguide can be coupled to a photonic crystal microcavity, which increases evanescent coupling. This inventive design enables a higher sensitivity and better tolerance to manufacturing imperfections. Photonic Crystals Waveguides Tell me more |
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PHOTONIC CRYSTAL SPECTROMETERTech for Transfer TTO 18-12-2015 This invention presents a new and disruptive technology for spectroscopic analysis involving an optical waveguide coupled to a photonic crystal. The use of photonic crystals to spatially resolve incoming optical energy, such as according to wavelength, can drastically reduce the complexity, production cost, or size of optical spectrometers, and can be applicable to any or all wavelengths detectable by a coupled optical detector. The photonic crystal spectrometer can be both small and inexpensive. This can allow entrance into many niche markets that otherwise might not exist. One particular such application can include color feedback and auto-tuning for printers. Spectroscopy Photonic Crystals Tell me more |
