|| List of recent Waveguide-related patents
| Apparatus and method for improved optical detection of particles in fluid|
A number of fluidic-photonic devices for allowing optical detection, systems employing such devices, and related methods of operation and fabrication of such devices are disclosed herein. In at least some embodiments, the devices can serve as flow cytometry devices and/or employ microfluidic channels.
| Light emitting device, manufacturing method thereof, and optical transceiver|
The light emitting device includes an active layer formed on a semiconductor substrate for emitting light, a semiconductor layer of a first conductivity type electrically connected to one end of the active layer, a semiconductor layer of a second conductivity type electrically connected to the other end of the active layer, first and second electrodes, a feedback mechanism for laser oscillation, and a waveguide for guiding the light emitted from the active layer, in which the active layer is made of a semiconductor having an affinity with a silicon cmos process, and the semiconductor layer of the first conductivity type and the semiconductor layer of the second conductivity type, and the waveguide are each made of silicon as a part of the semiconductor substrate.. .
| Optical communication apparatus|
An optical communication apparatus includes a substrate having a through hole; an optical element which includes a light terminal for receiving or sending light and is mounted on a surface of the substrate so that the light terminal faces an opening of the through hole; a light guide member which includes a first lens facing the light terminal of the optical element, a surrounding portion which surrounds a periphery of the first lens on a side of the opening of the through hole, and a guide portion which is provided inside the through hole and guides the light between the opening and another opening of the through hole; and a light waveguide which is arranged on a side of another surface of the substrate and includes a light guide optically connected to the light guide member on a side of the another opening of the through hole.. .
| Temperature controlled multi-channel transmitter optical subassembly and optical transceiver module including same|
A temperature controlled multi-channel transmitter optical subassembly (tosa) may be used in a multi-channel optical transceiver. The temperature controlled multi-channel tosa generally includes an array of lasers optically coupled to an optical multiplexer, such as an arrayed waveguide grating (awg), to combine multiple optical signals at different channel wavelengths.
| Monolithic multi-optical-waveguide penetrator or connector|
Methods and apparatus are provided for a monolithic multi-optical-waveguide penetrator or connector. One example apparatus generally includes a plurality of large diameter optical waveguides, each having a core and a cladding, and a body having a plurality of bores with the optical waveguides disposed therein, wherein at least a portion of the cladding of each of the optical waveguides is fused with the body, such that the apparatus is a monolithic structure.
| Optical waveguide element and method of producing the same|
An optical waveguide element includes a cladding portion made of a silica-based glass, and an optical waveguide positioned in the cladding portion and made of a silica-based glass in which a zro2 particle is dispersed.. .
| Multi-core optical waveguide for multi-parameter sensing|
Methods and apparatus are provided for transmitting light along multiple pathways using a multi-core optical device. One example apparatus generally includes a plurality of large diameter optical waveguides, each having a core and a cladding, and a body having a plurality of bores with the optical waveguides disposed therein, wherein at least a portion of the cladding of each of the optical waveguides is fused with the body, such that the apparatus is a monolithic structure.
| Optical device module and optical communication network system using the same|
An optical device module includes a substrate, an interlayer insulating layer on the substrate, an optical waveguide on the interlayer insulating layer, an optical device on the optical waveguide, and a prism disposed between the optical device and the optical waveguide. The prism has a refractive index greater than a refractive index of the optical waveguide..
| Optical closed loop microresonator and thyristor memory device|
A monolithic semiconductor device that includes a waveguide structure optically coupled to an optical resonator. The optical resonator is adapted to process light at a predetermined wavelength.
| Optical modulator module and semiconductor optical modulator|
A semiconductor optical modulator includes optical input and output portions; a plurality of mach-zehnder modulators including first and second waveguide arms having first and second modulation electrodes, respectively; an optical demultiplexer coupled between the optical input portion and the mach-zehnder modulator through an optical waveguide; an optical multiplexer coupled between the optical output portion and the mach-zehnder modulator; a plurality of electrical inputs including first, second, and common electrodes disposed between the first and second electrodes; and a plurality of differential transmission lines electrically connecting the electrical inputs to the mach-zehnder modulators. The mach-zehnder modulators, the optical demultiplexer, the optical multiplexer, the electrical inputs, and the differential transmission lines are disposed on a single substrate.
| Electro-optic silicon modulator with longitudinally nonuniform modulation|
A device, such as a silicon modulator, in accordance with the present disclosure employs pn diodes without sacrificing the modulation depth, while achieving lower loss and better impedance matching to 50-ohm drivers. In one embodiment, the device includes an input waveguide, an input optical splitter coupled to the input waveguide, first and second optical phase shifters coupled to the input optical splitter, an output optical splitter coupled to the first and second phase shifters, and an output waveguide coupled to the output optical splitter.
| Mesoporous structured material, x-ray waveguide, and method of fabricating mesoporous structured material|
The planarization layer is existing in the mesopores exposed on the surface of the mesoporous matrix.. .
| Write portion, thermally assisted magnetic head slider, head gimbal assembly, hard disk drive with the same, and manufacturing methods thereof|
A write portion for a thermally assisted magnetic head slider includes an air bearing surface facing to a magnetic recording medium; a write element having an opposed-to-magnetic recording medium surface; a waveguide for guiding light generated by a light source module mounted on a substrate of the thermally assisted magnetic head slider; and a plasmon unit provided around the write element, which has a near-field light generating surface for propagating near-field light to the air bearing surface. And only the opposed-to-magnetic recording medium surface of the write element is covered by a carbon layer.
| Tilted structures to reduce reflection in laser-assisted tamr|
A tamr (thermal assisted magnetic recording) write head uses the energy of optical-laser excited surface plasmons in a plasmon generator to locally heat a magnetic recording medium and reduce its coercivity and magnetic anisotropy. The optical radiation is transmitted to the plasmon generator by means of a waveguide, whose optical axis (centerline) is tilted relative to either or both the backside surface normal and abs surface normal in order to eliminate back reflections of the optical radiation that can adversely affect the properties and performance of the laser.
| Alignment-insensitive image input coupling|
Various embodiments are disclosed herein that relate to coupling light into waveguides in a near-eye display device in a manner configured to be tolerant to misalignment of the waveguides with each other and/or other optics. For example, one disclosed embodiment provides a near-eye display device comprising one or more waveguides, wherein each waveguide comprises a light input coupling configured to receive light at a first side of the waveguide to couple the light into the waveguide, and a light output coupling configured to emit light from the waveguide at a second side of the waveguide, the second side of the waveguide being opposite the first side of the waveguide..
| Optical waveguide and display device|
An optical waveguide is provided having at least first and second diffraction regions, the first diffraction region being arranged to diffract image-bearing light propagating along the waveguide so as to expand it in a first dimension and to turn the image-bearing light towards the second diffraction region, the second diffraction region being arranged to diffract the image-bearing light so as to expand it in a second dimension and to release it from the waveguide as a visible image. The first diffraction region is formed by first diffraction grating embedded within the waveguide, arranged to present a substantially similar profile to the image-bearing light when incident upon the grating from a given angle above or below the grating such that the polarisation of the image bearing light is rotated by substantially similar amounts, but in opposite directions, by successive interactions with the first diffraction region.
| Directional backlight|
A directional display may include a waveguide. The waveguide may include light extraction features arranged to direct light from an array of light sources by total internal reflection to an array of viewing windows and a reflector arranged to direct light from the waveguide by transmission through extraction features of the waveguide to the same array of viewing windows.
| Real-time measurement of relative position data and/or of geometrical dimensions of a moving body using optical measuring means|
A real-time measurement of relative position data and/or of geometrical dimensions of a moving body by lighting unit and a detector unit, wherein the moving body is movably guided relative to both of the units. Light beams are transmitted from the lighting unit towards the detector unit; the moving body protrudes between the lighting unit and the detector unit into the volume flooded by the light beams, so that the shadow border of the shadow thrown by the moving body extends over the detector unit.
| Semiconductor light-emitting device, super luminescent diode, and projector|
A semiconductor light-emitting device includes: a stacked structure including a light-emitting layer, a first cladding layer, and a second cladding layer; a first electrode electrically connected with the first cladding layer; a second electrode electrically connected with the second cladding layer; and a third electrode electrically connected with the second cladding layer. The stacked structure includes an optical waveguide.
| Light emitting device and projector|
A light emitting device includes a first layer that generates light by injection current and forms a waveguide for the light, and an electrode that injects the current into the first layer, wherein the waveguide has a first region, a second region, and a third region, the first region and the second region connect at a first reflection part, the first region and the third region connect at a second reflection part, the second region and the third region extend to an output surface, a longitudinal direction of the first region is parallel to the output surface, and a first light output from the second region at the output surface and a second light output from the third region at the output surface are output in parallel to one another.. .
| Short light pulse generation device, terahertz wave generation device, camera, imaging device, and measurement device|
A short light pulse generation device includes: a light pulse generation portion that has a quantum well structure and generates a light pulse; a frequency chirping portion that has a quantum well structure and chirps a frequency of the light pulse; a light branching portion that branches a chirped light pulse; and a group velocity dispersion portion that has a plurality of optical waveguides, on which each of a plurality of the light pulses branched in the light branching portion is incident, and produces a group velocity difference depending on a wavelength with respect to a plurality of branched light pulses, wherein light path lengths of the light pulses in a plurality of light paths before the light pulse is branched in the light branching portion and then incident on the plurality of optical waveguides of the group velocity dispersion portion are equal to each other.. .
| Dielectric waveguide with non-planar interface surface|
A dielectric wave guide (dwg) has a dielectric core member having that has a first dielectric constant value. A cladding surrounding the dielectric core member has a second dielectric constant value that is lower than the first dielectric constant.
| Open end antenna, antenna array, and related system and method|
A system includes an antenna array and a transceiver configured to communicate wirelessly via the antenna array. The antenna array includes a substrate having first and second ground plates.
| Dielectric waveguide with deformable interface surface|
A dielectric wave guide (dwg) has a dielectric core member that has a first dielectric constant value. A cladding surrounding the dielectric core member has a second dielectric constant value that is lower than the first dielectric constant.
| Laminated waveguide diplexer|
A laminated waveguide diplexer includes a first laminated waveguide, a second laminated waveguide, and a coupling metal connecting the first and second laminated waveguides. The first laminated waveguide has a first upper conductor with a first slot, and the second laminated waveguide has a second upper conductor with a second slot.
| Semiconductor package having a waveguide antenna and manufacturing method thereof|
A semiconductor package comprises a substrate, a grounding layer, a encapsulant, a shielding layer, and a conductive element. The substrate includes a chip.
| Semiconductor light emitting element and display device|
A semiconductor light emitting element is provided in which an optical intensity distribution of light to be emitted is the normal distribution and which can form a highly fine image. In the semiconductor light emitting element, first regions and second regions are periodically and alternately arranged in an optical waveguide along an extending direction thereof, and when the number of the first regions and the number of the second regions are represented by p1 and p2, respectively, if (p1−p2)=1, p2 is an integer of 2 or more, and if (p2−p1)=1, p1 is an integer of 2 or more.
| Etched-facet lasers having windows with single-layer optical coatings|
An edge-emitting etched-facet optical semiconductor structure has a substrate, an active multiple quantum well (mqw) region formed on the substrate, and a ridge waveguide formed over the mqw region extending in substantially a longitudinal direction between a waveguide first etched end facet and a waveguide second etched end facet. A mask layer used to form windows in which the etched end facets are disposed consists of a single dielectric material disposed directly on the ridge waveguide.
| Optical system for detecting the state of winding of a cable on a winch|
A system allowing automatic detection of the end of winding of a cable on a winch comprises an optical detector which emits, in the direction of the cable, a light beam which illuminates a given zone through which the cable travels in the course of its winding. The detector is associated with a specific marking, strongly reflecting, positioned on a section of the cable close to its end, such that, when this section enters into the zone illuminated by the detector, it reflects the beam in the direction of the detector which detects this reflected beam and which then signals that the cable is almost at the end of winding.
| Rf aperture coldplate|
An rf aperture coldplate for positioning in heat transfer proximity to heat-generating elements of an rf antenna system is presented. The rf aperture coldplate has a front side and a rear side.
| Plasma processing apparatus|
A plasma processing apparatus includes a processing chamber configured to partition a processing space and a microwave generator configured to generate microwaves for plasma excitation. Further, the plasma processing apparatus includes a dielectric member mounted in the processing chamber so as to seal the processing space, and configured to introduce the microwaves generated by the microwave generator into the processing space.
|Optical modulator module and modulation method for optical signal|
An optical modulator module includes an optical modulator including an optical waveguide which conducts an inputted optical signal, and m modulator regions on the optical waveguide; and m discrete driving circuits serially connected to one another. The discrete driving circuits include a driving circuit which outputs a signal obtained from a digital input signal with a synchronization signal to one of the modulator regions, and a phase shifting circuit which outputs a signal resulting from giving a delay to a signal branched from the synchronization signal.
Each of said two plasmonic strip waveguides being connected to said plasmonic waveguide and embracing an end section of the photonic waveguide such that each of said plasmonic strip waveguides is optically coupled to the end section of the photonic waveguide.. .
A device comprising: a substrate; a plurality of resonators on the substrate, each of the resonators of the plurality of resonators being resonant at a predetermined wavelength of electromagnetic radiation and at least some of the resonators being arranged to operate in different resonance orders; a waveguide on the substrate, the waveguide being coupled to the plurality of resonators for guiding the electromagnetic radiation to the plurality of resonators, wherein the resonance order of each resonator along the waveguide is optimised to maximise the coupling of light into the resonators.. .
|Suppression of back reflection in a waveguide|
A structure for guiding electromagnetic radiation, including: a substrate; a waveguide provided on the substrate and having a first end for receiving electromagnetic radiation and a second end; and an anti-reflection region provided at the second end of the waveguide on the substrate, the length and the width of the anti-reflection region being optimised to suppress back reflection of radiation that reaches the second end.. .
|Optical waveguide, optical interposer and light source|
An optical waveguide includes a substrate, a first core provided over the substrate and having a first taper region that extends from one side toward the other side and has a sectional area that decreases toward the other side, and a plurality of second cores provided over the substrate and over or under the first core with a first cladding layer sandwiched therebetween and extending in parallel to the substrate and the first core.. .
|Luminescent stacked waveguide display|
A display includes at least two stacked waveguides (110) and (120). A first waveguide (110) contains first luminophores that fluoresce to produce light of a first color.
|Optical element and mach-zehnder optical waveguide element|
Provided is an optical element including an optical waveguide including a core formed from: a rib part; and a first and second slab parts sandwiching the rib part. The first slab part includes a p-type region, the second slab part includes an n-type region, the rib part includes a p-type region which is in contact with the p-type region provided in the first slab part, and an n-type region which is in contact with the n-type region provided in the second slab part.
|X-ray detection submodule, x-ray detection module, and x-ray ct apparatus|
An x-ray detection submodule, comprising: a substrate; a photodiode mounted on the substrate; an x-ray detection element configured to detect an x-ray and convert the x-ray into light; and a light waveguide provided between the photodiode and the x-ray detection element, wherein the light waveguide connects the x-ray detection element with the photodiode such that the substrate is inclinedly disposed with respect to an x-ray detection surface of the x-ray detection element.. .
|Semiconductor laser excitation solid-state laser|
A semiconductor laser excitation solid-state laser comprises: a planar waveguide-type solid-state laser element which is disposed on a solid-state laser substrate; an ld array; and a sub-mount substrate on which joining layers of two different thicknesses are formed on the same plane; wherein the planar waveguide-type solid-state laser element is joined to the sub-mount substrate on the surface on the opposite side of a surface on which the solid-state laser substrate is mounted, via a joining layer of one of the thicknesses out of the joining layers of the two different thicknesses, and the ld array is joined to the sub-mount substrate on the surface on a light-emitting layer side, via another joining layer of the other thickness out of the joining layers of the two different thicknesses.. .
|Semiconductor lasers and etched-facet integrated devices having non-uniform trenches|
An edge-emitting etched-facet optical semiconductor structure includes a substrate, an active multiple quantum well (mqw) region formed on the substrate, a ridge waveguide formed over the mqw region extending in substantially a longitudinal direction between a waveguide first etched end facet disposed in a first window and a waveguide second etched end facet disposed in a second window, and first and second trenches having non-uniform widths extending in substantially the longitudinal direction between the first and second windows.. .
|Thermally-assisted magnetic recording head and method of manufacturing the same|
This thermally-assisted magnetic recording head includes: a waveguide; a magnetic pole; and a plasmon generator having a first region and a second region, in which the first region has an one end exposed on an air-bearing surface and another end located on an opposite side of the air-bearing surface, and in which the second region is coupled to the another end of the first region and has a volume greater than a volume of the first region. The first region includes a high-density region having a density that is greater than the density of the second region..
|Block light module|
A light module for a motor vehicle is disclosed. The light module includes a light source and a reflecting unit.
|Circuit board element having at least one led|
The invention relates to a circuit board element (1) comprising a substrate (2), on which at least one dielectric layer (7) is arranged, and at least one led (light-emitting diode) (10), wherein at least one channel-shaped waveguide cavity (11) leading away from the led (10) is provided in the dielectric layer (7), which waveguide cavity leads to at least one integrated light-sensitive component (12), preferably a photo-diode or photocell, arranged for examining the light emission, wherein the led (10) is preferably also arranged in a cavity (9) that is connected to the waveguide cavity (11). The invention further relates to a method for producing such a circuit board element (1)..
|Temporally multiplexed display with landscape and portrait operation modes|
An autostereoscopic display comprising a temporally multiplexed display arranged to provide viewing windows in a range around 45 degrees to achieve landscape and portrait viewing in cooperation with an observer tracking system. The temporally multiplexed display may comprise a stepped waveguide imaging directional backlight..
|Method and device for protecting a high-frequency power amplifier against a termination fault|
A mismatch protection circuit for high frequency power amplifiers includes a waveguide coupler connected to the output of the high frequency power amplifier. The waveguide coupler includes a first detector diode, which supplies, according to the power level being applied, a first voltage, which corresponds to the effective power that is fed in.
|Waveguide avalanche photodetectors|
Devices comprised of end-on waveguide-coupled photodetectors are described. In embodiments of the invention, the pbotodetectors are avalanche photodiodes coupled end-on to a waveguide.
|Micro-electro-mechanical system (mems) capacitive ohmic switch and design structures|
A micro-electro-mechanical system (mems), methods of forming the mems and design structures are provided. The method includes forming a coplanar waveguide (cpw) comprising a signal electrode and a pair of electrodes on a substrate.
|Iii-v photonic crystal microlaser bonded on silicon-on-insulator|
Novel methods and systems for miniaturized lasers are described. A photonic crystal is bonded to a silicon-on-insulator wafer.
|Waveguide-coupled vertical cavity laser|
An integrated circuit includes an optical source that provides an optical signal to an optical waveguide. In particular, the optical source may be implemented by fusion-bonding a iii-v semiconductor to a semiconductor layer in the integrated circuit.
An apparatus includes a waveguide core having an elongated edge parallel to a substrate plane of the apparatus. An output end of the waveguide core faces a media-facing surface of the apparatus.
|Face-lit waveguide illumination systems|
A face-lit waveguide illumination system employing a planar slab or plate of an optically transmissive material. A light source is optically coupled a linear optical element which is attached to a face of the waveguide and is configured to inject light at an angle permitting for light propagation by means of a total internal reflection.
|Multi-joint radiotherapy apparatus using flexible and rotary coupling waveguide pipe|
A radiotherapy apparatus includes a beam irradiation head (10), a linear accelerating means (20) provided at the beam irradiation head (10), a robot arm (30) connected with the beam irradiation head (10) and having a plurality of joints, a waveguide (40) built in the robot arm 30 and connected with the linear accelerating means (20), and an electromagnetic wave oscillator (50) disposed outside the robot arm (30) and generating electromagnetic waves so that the electromagnetic waves are propagated to the linear accelerating means (20) through the waveguide (40).. .
|Method for joining two dissimilar materials and a microwave system for accomplishing the same|
The present disclosure provides a method for joining two materials, and a system for accomplishing the same. The method for joining two materials, in this aspect, includes placing an article including two dissimilar materials within a waveguide structure, the article located between a microwave source and reflective surface of the waveguide structure.
|Marking apparatus with a plurality of gas lasers with resonator tubes and individually adjustable deflection means|
The invention relates to a marking apparatus (100) for marking an object with laser light, comprising a plurality of gas lasers (10) and a control unit for individually activating each of the gas lasers (10) to emit a laser beam according to a sign to be marked. The gas lasers (10) are stacked such that the laser beams emitted by the gas lasers (10) form an array of laser beams, in particular a linear array with parallel laser beams, each gas laser (10a-i) comprises laser tubes (12) that at least partially surround an inner area (5).
|Transducer/waveguide engagement mechanisms for ultrasonic surgical instruments|
An ultrasonic surgical instrument includes a transducer assembly having a distal engagement member and configured to supply ultrasonic energy. A waveguide defines a longitudinal axis and has a proximal engagement member configured to threadingly engage the distal engagement member.
|Methods and apparatus for controlling optical properties of light|
A surgical instrument for illuminating a surgical field has an optical waveguide for transmitting light by total internal reflection. One or more control elements are disposed on the optical waveguide.
|Apparatus, systems and methods which include and/or utilize flexible forward scanning catheter|
These and other objects of the present disclosure can be achieved by provision of an apparatus for illuminating a structure(s), which can include a first arrangement and a second arrangement which can each be configured to rotate and deflect a radiation(s) transmitted therethrough at an angle with respect to an axis of rotation thereof. There can be a plurality of rotating third arrangements, where at least one can be connected to the first arrangement, and at least another one can be connected to the second arrangement.
|Compound containing crosslinkable moieties, prepolymer, blend and polymer sheet obtained therefrom, and waveguide for optical interconnection|
Where a is carbon or nitrogen, and x is hydrogen or halogen; and a second compound consisting of an aromatic moiety.. .
The invention provides an optical connector for coupling with a complementary optical connector and for supporting an optical component. The connector comprises a cover moveable between a first and second position.
|Optical connector, optical connecting structure and method of manufacturing optical connector|
An optical connecting member realizes an optical connecting between a multi-core fiber and a plurality of single-core fibers by a waveguide part which connects a first end face and a second end face. With the optical connecting member, a connected end which is connected to the first end face is a straight-line portion that is orthogonal to the first end face in each of the plurality of waveguide parts.
|Optical power splitters|
Waveguide array optical power splitters that provide compact, low-cost implementation of optical power splitting for one and two dimensional optical waveguide arrays are disclosed. The optical power splitters do not introduce mode dependent loss and preserve polarization, enabling the optical power splitters to be used with multimode and single mode light sources.
|Flexible 3-d photonic device|
Three-dimensional flexible photonic integrated circuits on silicon are fabricated in semiconductor wafer form and then transferred to silicon-on-polymer (sop) substrates. Sop provides flexibility for conformal mounting with devices capable of maintaining performance when dynamically deformed to allow routing of light in x, y and z directions.
|Broadband, group index independent, and ultra-low loss coupling into slow light slotted photonic crystal waveguides|
The present invention provides a waveguide coupler configured to optically couple a strip waveguide to a first slot photonic crystal waveguide, wherein the slot photonic crystal waveguide has a lattice constant, an air hole diameter, a slot width and a first line defect waveguide width. The waveguide coupler includes a group reflective index taper having a second slot photonic crystal waveguide disposed between and aligned with the first slot photonic crystal waveguide and the strip waveguide.
|Polarization splitter of high polarization extinction ratio|
A polarization splitter includes a substrate, an asymmetric y-shaped waveguide, and a pair of strip-shaped electrodes. The substrate is made of a birefringence crystal and includes a surface.
|Acoustic layer in media device providing enhanced audio performance|
An acoustic layer is added to a laptop-type personal computing device, comprising: enclosing walls, optionally—one or more microphones, a signal processing device, at least one audio transducer, and an acoustic waveguide. The acoustic layer adjoins one or more internal areas of a laptop-type device.
|Combined laser light source|
A combined laser light source includes a substrate, a waveguide, a first laser source, a second laser source, and a bragg grating. The substrate includes a top surface, a first side surface, and a second side surface.
|Semiconductor lasers and etched-facet integrated devices having h-shaped windows|
An edge-emitting optical semiconductor structure has a substrate, an active multiple quantum well (mqw) region formed on the substrate, and a ridge waveguide extending between first and second etched end facets. The first etched end facet is disposed in a first window, while the second etched end facet is disposed in a second window.
|Compact coherent high brightness light source for the mid-ir and far ir|
Compact laser systems are disclosed which include ultrafast laser sources in combination with nonlinear crystals or waveguides. In some implementations fiber based mid-ir sources producing very short pulses and/or mid-ir sources based on a mode locked fiber lasers are utilized.
|Fiberoptic systems and methods for acoustic telemetry|
A disclosed acoustic telemetry system includes a downhole acoustic telemetry module that generates an acoustic uplink signal such as a pulsed fluid flow or compressional waves in a tubing string wall. An optical waveguide transports an optical signal representing the acoustic uplink signal to the surface interface.
|Optical waveguide sheet for keypad|
Provided is optical waveguide sheet for a keypad having a light guiding portion 21 positioned below an indicating portion 11a of a keytop part 11, and a light introducing portion 22 positioned above a light source 13 to guide the light emitted from the light source 13 to the light guiding portion 21 so as to be guided toward the indicating portion 11a. The light introducing portion 22 includes a through hole 24 formed therein, a light introducing flap 23 of a barrel shape formed around the edge of the through hole 24 so as to connect with the light introducing portion 22 and protrude toward the light source 13, and a light introducing section 23a provided on an end of the light introducing flap 23 for the light emitted from the light source 13 to be introduced..
The present invention provides a projection display (10) for projecting a colour image to a viewer (12) overlaid on a real world scene viewed through the display. The display comprises an image generator (16) for generating image bearing chromatic light for injection into a waveguide assembly (28) at a first range of field angles (44) and a second range of field angles (46).
|Interferometer employing a multi-waveguide optical loop path and fiber optic rotation rate sensor employing same|
An interferometer employed, in part, as a sagnac interferometer or fiber optic gyro (fog) includes a light source that provides a source light wave that is split into first and second light waves that are directed to traverse a defined optical loop path in opposite directions. The defined optical loop path in accordance with the present invention is provided by multiple waveguides wound into a coil such that the opposite traveling first and second light waves serially travel through all of the waveguides in opposite directions around the optical loop path..
|Light emitting device, super-luminescent diode, and projector|
A light emitting device includes a laminated body having an active layer, a first cladding layer, and a second cladding layer, the active layer constitutes an optical waveguide, the optical waveguide includes a first portion connecting a first exit section and a first reflecting section to each other, a second portion connecting the first reflecting section and a second reflecting section to each other, and a third portion connecting the second reflecting section and a second exit section to each other, and a current density in the first portion and a current density in the third portion are higher than a current density in the second portion.. .
A rotman lens, having a ground plane 80 made up of a conductive member and a dielectric substrate 70 disposed on the ground plane 80, and disposed at a position facing the ground plane 80 sandwiching the dielectric substrate 70, including plural input ports 11 to 15 and plural output ports 41 to 47, in which waveguides 51 to 56 guiding a signal input to one input port to the plural output ports are disposed in the dielectric substrate 70 along a line connecting both ends of the plural output ports 41 to 47 and the one input port in an aspect in which the waveguides do not interfere with each other, reduces a loss thereof.. .
|Electronically steerable antenna using reconfigurable power divider based on cylindrical electromagnetic band gap (cebg) structure|
A low complexity/cost beamsteering antenna includes a central line feed affixed to a radial waveguide structure, radiating elements positioned along the circumference of the radial waveguide structure, and a plurality of active elements interspersed along the surface of the radial waveguide structure between the central line feed and the radiating elements. The active elements may comprise pin diodes or microelectromechanical system (mems) components, and may be selectively activated/deactivated by dc switches in order to direct the propagation of an rf signal over the radial waveguide structure in a manner similar to a power divider.