65results about How to "Maximise coupling" patented technology

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.

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.

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.

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.

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.

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.

A hard bias layer that forms an abutting junction with a free layer in a GMR element and is comprised of FePtCu or FePtCuX where X is B, C, O, Si, or N is disclosed. The FePtCu layer has a composition of about 45 atomic % Fe, 45 atomic % Pt, and 10 atomic % Cu and does not require a seed layer to achieve an ordered structure. The FePtCu layer is annealed at a temperature of about 280° C. and has an Hc value more than double that of a conventional CoCrPt hard bias layer with a similar thickness. Since the FePtCu hard bias layer adjoins a free layer, it has a higher sensor edge pinning efficiency than a configuration with a CoCrPt layer on a seed layer. The novel hard bias layer is compatible with either a top or bottom spin valve structure in a GMR sensor.

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.

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.

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.

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.

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.

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.

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.