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66results about How to "Maximise coupling" patented technology

High efficiency grating coupling for light delivery in EAMR

A magnetic head comprising a waveguide coupler for coupling incident electromagnetic (EM) radiation into a waveguide is disclosed. The waveguide coupler includes a bottom clad layer and a waveguide core layer formed above the bottom clad layer. An interface between the bottom clad layer and the waveguide core layer includes a first grating having a first period and a first etch depth, which are configured to couple a first portion of the incident EM radiation into the waveguide core layer. The waveguide coupler can further comprise a top clad layer formed above the waveguide core layer. An interface between the waveguide core layer and the top clad layer includes a second grating having a second period and a second etch depth. The second period and the second etch depth are configured to couple a second portion of the incident EM radiation into the waveguide core layer.
Owner:WESTERN DIGITAL TECH INC

Coupling loop

A coupling loop or antenna is provided that can be used with a system that determines the resonant frequency of a sensor by adjusting the phase and frequency of an energizing signal until the frequency of the energizing signal matches the resonant frequency of the sensor. The coupling loop includes multiple loops. Preferably two tuned loops are used for transmitting the energizing signal to the sensor and an un-tuned loop is used for receiving the sensor signal from the sensor. Orientation features on the housing for the coupling loop and the sensor are provided to assist in positioning the coupling loop relative to the sensor to maximize the coupling between the sensor signal and the coupling loop.
Owner:ST JUDE MEDICAL LUXEMBOURG HLDG II S A R L SJM LUX II

Coupling loop and method for positioning coupling loop

A coupling loop or antenna is provided that can be used with a system that determines the resonant frequency of a sensor by adjusting the phase and frequency of an energizing signal until the frequency of the energizing signal matches the resonant frequency of the sensor. The coupling loop includes multiple loops. Preferably two tuned loops are used for transmitting the energizing signal to the sensor and an un-tuned loop is used for receiving the sensor signal from the sensor. Orientation features on the housing for the coupling loop and the sensor are provided to assist in positioning the coupling loop relative to the sensor to maximize the coupling between the sensor signal and the coupling loop.
Owner:ST JUDE MEDICAL LUXEMBOURG HLDG II S A R L SJM LUX II

Optical fiber mode coupling device, having an optimized fiber interface and method of fabrication thereof

An optical fiber mode coupling device, capable of being readily connected to a conventional optical fiber with a high degree of ruggedness, is provided. The inventive mode coupling device only allows transmission of at least one supported fiber mode therethrough, and is preferably configured to maximize the coupling, of at least one desired fiber mode, to the at least one supported fiber mode. Advantageously, the inventive mode coupling device is capable of performing the functions of a mode filter for the signal entering its first end, or serving as a mode conditioner for the signal entering its opposite second end. Thus, in one practical application thereof, the novel mode coupling device functions as a mode filter by maximizing the coupling between at least one desired fiber mode of a multi-mode input signal entering the device's first end, and at least one supported mode of the device, to produce an output signal at the device's second end that comprises at least one predetermined fiber mode, corresponding to at least one desired fiber mode. In another practical application thereof, the novel mode coupling device functions as a mode conditioner by maximizing the coupling between an input signal, comprising at least one predetermined fiber mode, that enters the device's second end, and, and at least one supported mode of the device, to produce an output signal at the device's first end that comprises at least one desired fiber mode, corresponding to a conditioned at least one predetermined fiber mode.
Owner:CHIRAL PHOTONICS

Optical connector assembly

A method and apparatus is disclosed for enabling a coupling of at least one optical fiber with an optoelectronic device. The apparatus comprises at least one v-groove for receiving at least one optical fiber. A first end of the apparatus is then polished at a predetermined angle in order to enable an optical coupling with the optoelectronic device.
Owner:REFLEX PHOTONIQUE REFLEX PHOTONICS

System and method for trace species detection using cavity attenuated phase shift spectroscopy with an incoherent light source

This invention provides a system and method that enables the use of incoherent light sources, such as light emitting diodes, to provide for the detection of gaseous species which exhibit broadband absorption features (e.g., nitrogen dioxide and the halogen gases). The light emitting diode (LED) is an ideal light source for such an arrangement in that it can be modulated at high frequencies (allowing for omission of external modulation equipment) and provides sufficient illumination within a reasonably narrow wavelength band as compared to, for instance, an incandescent light source. A further advantage of a LED as a light source compared to alternatives such as a gas discharge or arc lamp is that the light output of the LED is highly stable, limited by the stability of the current source used to drive it. Use of a confocal or near-confocal resonant optical cavity maximizes coupling of the light source to the cavity.
Owner:AERODYNE RES

Devices and methods for side-coupling optical fibers to optoelectronic components

Optical devices, components and methods for mounting optical fibers and for side-coupling light to / from optical fibers using a modified silicon V-groove, or silicon V-groove array, wherein V-grooves, which are designed for precisely aligning / spacing optical fibers, are “recessed” below the surface of the silicon. Optical fibers can be recessed below the surface of the silicon substrate such that a precisely controlled portion of the cladding layer extending above the silicon surface can be removed (lapped). With the cladding layer removed, the separation between the fiber core(s) and optoelectronic device(s) can be reduced resulting in improved optical coupling when the optical fiber silicon array is connected to, e.g., a VCSEL array.
Owner:IBM CORP

Plasma generating apparatus

A plasma generating apparatus having superior plasma generation efficiency that uses a single reaction chamber. The plasma generating apparatus includes a RF generator for providing a RF power, an antenna for generating an electromagnetic field upon receiving the RF power, a reaction chamber for exciting / ionizing a reaction gas via the electromagnetic field, and generating a plasma, and a plasma channel for absorbing the RF power, and allowing a current signal to be induced to the plasma.
Owner:SAMSUNG ELECTRONICS CO LTD

Dental implant

A dental implant comprises a fixture portion, a neck portion, and an abutment portion. The fixture portion is embedded in a jawbone. The fixture has a screw thread on an outer circumferential thereof. The neck portion is integrally formed on an upper end of the fixture portion and has a neck that is formed to be narrow such that the neck is bendable. The abutment portion is integrally formed on an upper end of the neck portion and has a cylindrical shape extending upwardly.
Owner:MEGAGEN IMPLANT

Resonating conductive traces and methods of using same for bonding components

Conductive traces and patterns of same are used to bond components together via electromagnetic radiation. Each conductive trace is configured to resonate and heat up when irradiated with electromagnetic radiation, such as microwave energy and / or RF energy, having a wavelength that is about 2.3 times the length of the conductive trace. The conductive traces may be arranged in a pattern to uniformly heat a target area of a substrate or other component to a selected temperature when irradiated with electromagnetic radiation.
Owner:LAMBDA TECH

Electromechanical Generator for Converting Mechanical Vibrational Energy into Electrical Energy

An electromechanical generator for converting mechanical vibrational energy into electrical energy, the electromechanical generator comprising a housing, an electrically conductive coil assembly movably mounted in the housing, the coil assembly having radially inner and outer sides, and upper and lower edges, thereof, a mount for the coil assembly extending inwardly of the radially inner side for mounting the coil assembly for linear vibrational motion along an axis about, a first biasing device mounted between the housing and the mount to bias the electrically conductive coil assembly in opposed directions along the axis towards a central coil position, a magnetic core assembly movably mounted in the housing for linear vibrational motion along the axis, and a second biasing device mounted between the housing and the magnetic core assembly to bias the magnetic core assembly in opposed directions along the axis towards a central magnet position, wherein the magnetic core assembly encloses the electrically conductive coil assembly on the radially outer side and on the upper and lower edges, and on a part of the radially inner side, the magnetic core assembly having a gap on a radially inner portion thereof through which the mount extends, and the radially inner portion including two opposed magnets spaced along the axis.
Owner:HITACHI RAIL LTD +1

Devices and methods for side-coupling optical fibers to optoelectronic components

Optical devices, components and methods for mounting optical fibers and for side-coupling light to / from optical fibers using a modified silicon V-groove, or silicon V-groove array, wherein V-grooves, which are designed for precisely aligning / spacing optical fibers, are “recessed” below the surface of the silicon. Optical fibers can be recessed below the surface of the silicon substrate such that a precisely controlled portion of the cladding layer extending above the silicon surface can be removed (lapped). With the cladding layer removed, the separation between the fiber core(s) and optoelectronic device(s) can be reduced resulting in improved optical coupling when the optical fiber silicon array is connected to, e.g., a VCSEL array.
Owner:INT BUSINESS MASCH CORP

Electromechanical generator for converting mechanical vibrational energy into electrical energy

An electromechanical generator for converting mechanical vibrational energy into electrical energy, the electromechanical generator comprising a housing, an electrically conductive coil assembly movably mounted in the housing, the coil assembly having radially inner and outer sides, and upper and lower edges, thereof, a mount for the coil assembly extending inwardly of the radially inner side for mounting the coil assembly for linear vibrational motion along an axis about, a first biasing device mounted between the housing and the mount to bias the electrically conductive coil assembly in opposed directions along the axis towards a central coil position, a magnetic core assembly movably mounted in the housing for linear vibrational motion along the axis, and a second biasing device mounted between the housing and the magnetic core assembly to bias the magnetic core assembly in opposed directions along the axis towards a central magnet position, wherein the magnetic core assembly encloses the electrically conductive coil assembly on the radially outer side and on the upper and lower edges, and on a part of the radially inner side, the magnetic core assembly having a gap on a radially inner portion thereof through which the mount extends, and the radially inner portion including two opposed magnets spaced along the axis.
Owner:HITACHI RAIL LTD +1

Optical fiber mode coupling device, having an optimized fiber interface and method of fabrication thereof

An optical fiber mode coupling device, capable of being readily connected to a conventional optical fiber with a high degree of ruggedness, is provided. The inventive mode coupling device only allows transmission of at least one supported fiber mode therethrough, and is preferably configured to maximize the coupling, of at least one desired fiber mode, to the at least one supported fiber mode. Advantageously, the inventive mode coupling device is capable of performing the functions of a mode filter for the signal entering its first end, or serving as a mode conditioner for the signal entering its opposite second end. Thus, in one practical application thereof, the novel mode coupling device functions as a mode filter by maximizing the coupling between at least one desired fiber mode of a multi-mode input signal entering the device's first end, and at least one supported mode of the device, to produce an output signal at the device's second end that comprises at least one predetermined fiber mode, corresponding to at least one desired fiber mode. In another practical application thereof, the novel mode coupling device functions as a mode conditioner by maximizing the coupling between an input signal, comprising at least one predetermined fiber mode, that enters the device's second end, and, and at least one supported mode of the device, to produce an output signal at the device's first end that comprises at least one desired fiber mode, corresponding to a conditioned at least one predetermined fiber mode.
Owner:CHIRAL PHOTONICS

Fiber optical superconducting nanowire single photon detector

A fiber optical superconducting nanowire detector with increased detector efficiency, fabricated directly on the tip of the input optical fiber. The fabrication on the tip of the fiber allows precise alignment of the detector to the fiber core, where the field mode is maximal. This construction maximizes the coupling efficiency to close to unity, without the need for complex alignment procedures, such as the need to align the input fiber with a previously fabricated device. The device includes a high-Q optical cavity, such that any photon entering the device will be reflected to and fro within the cavity numerous times, thereby increasing its chances of absorption by the nanowire structure. This is achieved by using dedicated cavity mirrors with very high reflectivity, with the meander nanowire structure contained within the cavity between the end mirrors, such that photons impinge on the nanowire structure with every traverse of the cavity.
Owner:TECHNION RES & DEV FOUND LTD

Integrated plasmonic nanocavity sensing device

An integrated plasmonic sensing device is described wherein the integrated device comprises: at least one optical source comprising a first conductive layer and a second conductive layer, and a optical active layer between at least part of said first and second conductive layers; at least one nanocavity extending through said first and second conductive layers and said optical active layer, wherein said optical source is configured to generate surface plasmon modes suitable for optically activating one or more resonances in said nanocavity; and, at least one optical detector comprising at least one detection region formed in said substrate in the vicinity of said nanocavity resonator, wherein said optical detector is configured to sense optically activated resonances in said nanocavity.
Owner:INTEGRATED PLASMONICS CORP

Data port alignment of free space optical communications terminal with adaptive optics

An approach for aligning an adaptive optics module and a data port in a free space optical communications terminal. A wavefront sensor in the adaptive optics system is aligned to a reference port. The data port is also aligned to the reference port. In this way, alignment of the wavefront sensor and the data port is achieved.
Owner:EOS DEFENSE SYST USA INC

Cable Assembly for a Coupling Loop

A coupling loop or antenna is provided that can be used with a system that determines the resonant frequency of a sensor by adjusting the phase and frequency of an energizing signal until the frequency of the energizing signal matches the resonant frequency of the sensor. A cable attached to the coupling loop provides maximum isolation between the energizing signal and the sensor signal by maximizing the distance between the coaxial cables that carry the signals and maintaining the relative positions of the coaxial cables throughout the cable assembly.
Owner:ST JUDE MEDICAL LUXEMBOURG HLDG II S A R L SJM LUX II

Electromechanical generator for converting mechanical vibrational energy into electrical energy

An electromechanical generator comprising an electromechanical device for converting mechanical vibrational energy into electrical energy, the electromechanical device comprising a housing, an electrically conductive coil fixedly mounted in the housing, a magnet assembly movably mounted in the housing for linear vibrational motion along an axis, the magnet assembly having a pair of opposed polar surfaces defining a gap therebetween, the coil being disposed in the gap, and a biasing device mounted between the housing and the magnet assembly, the biasing device biasing the magnet assembly in opposed directions along the axis towards a central position.
Owner:HITACHI RAIL LTD +1

Wireless energy transfer using variable size resonators and system monitoring

A variable effective size magnetic resonator includes an array of resonators each being one of at least two substantially different characteristic sizes and a mechanism for detuning at least one of the resonators from the resonant frequency of the variable effective size magnetic resonator.
Owner:WITRICITY CORP

Optical communication module

An optical communication module which uses a single optical fiber to enable bidirectional communication or multiplexing communication is provided. The optical communication module includes a platform configured to have a through-hole therein which vertically passes through the platform; an optical receiver configured to be provided on the platform and include a light-receiving element; an optical transmitter configured to be provided on the platform and include a light-emitting element; and an optical filter configured to be provided on one surface of the platform to correspond to the through-hole, transmit light from the light-emitting element to an optical line, and transmit light input through the optical line to the light-receiving element, where one of the light-receiving element and the light-emitting element is provided on one surface of the platform on an opposite side of the optical line with the optical filter interposed therebetween, and the other is provided on the other surface of the platform to correspond to the through-hole. Accordingly, it is possible to reduce the manufacturing cost, minimize the optical or electrical crosstalk, and maximize the optical coupling efficiency.
Owner:ELECTRONICS & TELECOMM RES INST

Chemical sensor employing resonator-enhanced forbidden-light collection

A chemical sensor that includes, in one example embodiment, a dielectric resonator, wherein a material sample to be characterized is positioned a species to be detected, wherein the species is positioned near a surface of the resonator so that evanescent electromagnetic energy emanating from the surface causes Raman scattering from the species. The resonator is adapted to support modes propagating within the resonator, wherein the modes are adapted to yield the evanescent electromagnetic energy and to couple Raman-scattered electromagnetic energy back into one or more of the modes. In a more specific embodiment, the dielectric cavity represents a stable optical resonator. An input coupling optic couples input electromagnetic energy into the dielectric cavity via photon tunneling across a gap between the input coupling optic and the dielectric cavity. A distance across the gap is approximately one wavelength or larger, wherein the wavelength corresponds to a wavelength of the input electromagnetic energy. An output coupling optic is adapted to couple one or more modes within the dielectric cavity that contain electromagnetic energy corresponding to the Raman-scattered electromagnetic energy, and to provide an output signal in response thereto.
Owner:PIPINO ANDREW C R

Radome for vehicles

The radome (10) for vehicles comprises a substrate (18) formed of a radio transmissive resin, the substrate (18) having a proximal face and a distal face and a decoration layer (20) applied to the proximal face, the decoration layer (20) comprising a metalloid or a metalloid alloy deposited on the surface of the proximal face, a transparent frontal cover (22) overlying the decoration layer (20), and a light source (11) that illuminates the substrate (18), so that the light from the light source (11) crosses the transparent frontal cover (22). It permits to maintain its metallic aspect in any lighting condition, so that the decorative function is be improved by adding illumination in appropriate conditions while preserving the radar functionality.
Owner:ZANINI AUTO GRUP

Edge ring arrangements for substrate processing

A method for processing a substrate in a plasma processing chamber is provided. The substrate is disposed above a chuck and surrounded by a first edge ring. The first edge ring is electrically isolated from the chuck. The method includes providing a second edge ring. The second edge ring is disposed below an edge of the substrate. The method also includes providing a coupling ring. The coupling ring is configured to facilitate RF coupling from an ESC (electrostatic chuck) assembly to the first edge ring, thereby causing the first edge ring to have an edge ring potential during substrate processing and causing the RF coupling to be maximized at the first edge ring and minimized at the second edge ring during the substrate processing.
Owner:LAM RES CORP

Bidirectional optical transceiver module and method of aligning the same

InactiveUS20150372759A1Optical coupling efficiency can be maximizedOptical and electrical crosstalk may be minimizedWavelength-division multiplex systemsMeasurement/indication equipmentsTransceiverElectric signal
Disclosed are a bidirectional optical transceiver module and a method of aligning the same. The bidirectional optical transceiver module includes: a package having on one side a cavity; a platform mounted on the package; a transmitter which generates output light; a holder which includes the horizontal portion having the through-hole and disposed on the package to cover the cavity, and the vertical portion which has the inclined surface on one side and the connection hole connected to the through-hole; a receiver which generates an electric signal that corresponds to input light incident into the cavity; and a WDM filter that delivers the output light and the input light.
Owner:ELECTRONICS & TELECOMM RES INST

Integrated plasmonic nanocavity sensing device

An integrated plasmonic sensing device is described wherein the integrated device comprises: at least one optical source comprising a first conductive layer and a second conductive layer, and a optical active layer between at least part of said first and second conductive layers; at least one nanocavity extending through said first and second conductive layers and said optical active layer, wherein said optical source is configured to generate surface plasmon modes suitable for optically activating one or more resonances in said nanocavity; and, at least one optical detector comprising at least one detection region formed in said substrate in the vicinity of said nanocavity resonator, wherein said optical detector is configured to sense optically activated resonances in said nanocavity.
Owner:INTEGRATED PLASMONICS CORP

Bidirectional optical transceiver module and method of aligning the same

InactiveUS9541714B2Optical and electrical crosstalk may be minimizedMaximise couplingWavelength-division multiplex systemsCoupling light guidesTransceiverComputer module
Disclosed are a bidirectional optical transceiver module and a method of aligning the same. The bidirectional optical transceiver module includes: a package having on one side a cavity; a platform mounted on the package; a transmitter which generates output light; a holder which includes the horizontal portion having the through-hole and disposed on the package to cover the cavity, and the vertical portion which has the inclined surface on one side and the connection hole connected to the through-hole; a receiver which generates an electric signal that corresponds to input light incident into the cavity; and a WDM filter that delivers the output light and the input light.
Owner:ELECTRONICS & TELECOMM RES INST

Check valve for downspouts

Methods, systems and devices for a check valve for deterring intrusion into downspouts include a body member having at least a first orifice and are configured to mount on a downspout, where the downspout is adapted to promote fluid flow in a single direction. Pivotably mounted on the body members are various valve members. The mounting arrangement can provide a closed position that substantially occludes the first orifice and a range of open positions when the valve member is pivoted with respect to the body member to open in the flow direction. In addition, at least one additional orifice can be provided in either the body member or the valve member to permit fluid flow irrespective of the position of the valve member.
Owner:FREE FLOW PROD
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