507 results about "Waveguide array" patented technology

In a connection between an optical fiber or optical fiber array and an integrated optical waveguide or integrated optical waveguide array mounted or fabricated on a grooved substrate, an end face of an optical fiber array has a first facet and a second facet. The first facet has an inclination angle substantially equal to the inclination angle of an end wall of the substrate groove; the second facet has an inclination angle substantially equal to the inclination angle of the end face of the integrated optical waveguide. When the optical fiber array is mounted on the grooved substrate, each of the fibers rests in one of the substrate grooves. The first facet of each optical fiber end face is aligned with the end wall of the groove in which it rests, and the second facet is aligned with the end face of the integrated optical waveguide.

Touch screen sensor systems that incorporate VCSELs or VCSEL arrays to provide illumination beams for sensing the position of objects such as a finger or stylus in a two dimensional space is provided. Normally the touch sensor is used with a display screen so that objects in the display screen are identified by positioning a finger or stylus at the object's position. The invention describes improved illumination methods using VCSELs that realize higher resolution in position sensing. VCSELs can also be integrated with detectors on a common substrate which provides both illumination and detection functions for the touch sensor system. Different methods to suitably couple light from VCSEL arrays directly, or through guided light paths such as fibers and waveguide arrays are provided to configure a touch sensor in different applications.

The invention publishes a wave guide array antennas manufacture method of high gain crewel polarized or the double circular polarized, which relates to a wave guide array antennas manufacture technique in the correspondence broadcast and measure-control domain. The invention has designed the radiation level, the horizontal polarization or the circular polarization feed wave guide level, the perpendicular polarization feed wave guide level, the perpendicular polarization feed wave guide lap, the feed way of using the square or the circular waveguide resonant cavity, has solved the receive and launch of the double polarized electromagnetism signal; The horizontal polarization uses the coupling feed way and the perpendicular polarization uses the direct feed way, completes the separation of the two polarized components, simultaneously may realizes the double circular polarized work. The invention has the double polarized radiation, the high feed efficiency, compact structure, low processing cost and so on merits, is specially suitable for the manufacture of each kind of satellite communication or single control station antenna which works in the double thread polarization or double circular polarized application situations.

The structure comprises the array of the wave-guide grating as well as the input and output optical fiber array, which is aimed at and coupled to the array of the input and output wave-guide in the array of the wave-guide grating. The array of the wave-guide grating and the input and output optical fiber array are integrated on the same silicon substrate. The self-alignment method is adopted in the invention to carry out the end surface coupling between the input and output wave-guide in the array of the wave-guide grating and the optical fiber array. The optical fiber array is prepared by using the adhesive agent to bond the array of the V or U shaped groove on the substrate, the upper cover piece and the monomode fiber with multiple cores.

A loudspeaker system containing wave-shaping sound chambers with approximately rectangular inlets and outlets of substantially the same size that are used to flatten or control the curvature of the acoustic wavefronts contained within system waveguides. Control of the degree of curvature of the wavefront enables the development of a wide variety of multi-waveguide arrays. The sound chambers are placed between a waveguides and a flattened conical horns of secondary waveguides. The sound chambers transform the curvature of the typical fan shaped wavefront that results from a conical horn throat into a wavefront that approximates a planar or curved rectangular ribbon of sound.

The invention relates to the active optics phase conjugate method and the imaging device, the optical switch. It constructs the mode separation/integration convertor by the optical waveguide array which is set together at one end, the optics field couples with each other; it is set separately in the other end. It leads the optical wave into the separating optical waveguide by the separation/integration convertor, then to achieve the active optics phase conjugate by adjusting the phase and the swing. It can solves the imaging problem in many limit condition such as big size, high quality, super quick focal variation, long distance and so on. So it can be used in the field of the computer-human conversation, the robot optics, the integrate circuit photoetching, information storage, the military affairs, the energy source, the biology and the light communication network.

Waveguide or flow guide surfaces can improve the efficiency of fluid flow through tubes or over surfaces. When incorporated in a tube, the waveguides improve flow and function as sound absorbers making them useful in engine mufflers, firearm silencer/suppressors and jet engine exhaust attenuators. On surfaces, the waveguides can reduce fluid drag and find use on projectiles (e.g., bullets), airfoils for aircraft, and land borne vehicles. The waveguide array in either a tubular chamber or on a surface comprises a plurality of successive wave-like undulations inclined generally in the direction of flow and when employed in tubes extending inwardly to permit an unobstructed path for the fluid gas from entry to exit. The waves define annular wave cavities between their successive inwardly extending edges and the wall of the chamber with each cavity having a cavity mouth open to the unobstructed path. The waveguides are sized and spaced so that gas vortices are created within the cavities when gas flow occurs which vortices create a fluid boundary layer that assists the gas flow.

The invention belongs to the field of design and manufacturing of millimeter wave antennas and provides a broadband dual circularly polarized planar waveguide array antenna. The antenna comprises a radiation aperture, a resonant cavity, a feed square waveguide, a circular polarizer, a dual polarization feed network and a standard waveguide interface which are sequentially stacked from top to bottom, wherein the radiation aperture consists of multiple 2*2 atomic arrays arranged in an array; the resonant cavity consists of a square ridge waveguide resonant cavity, a first square waveguide resonant cavity and a second square waveguide resonant cavity which are sequentially stacked from top to bottom; the circular polarizer is formed by inserting a stepped metal membrane into the square waveguide in a center loading manner; the dual polarization feed network consists of a left-hand circular polarization feed network and a right-hand circular polarization feed network; the standard waveguide interface comprises two output ports, namely, a left-hand circular polarization interface and a right-hand circular polarization interface. The broadband dual circularly polarized planar waveguide array antenna with high gain and efficiency is realized.

In accordance with various embodiments, there is an exposure system for writing a pattern on a photosensitive material. The exposure system can include a waveguide array and a light modulator. The waveguide array can include a plurality of optical fibers that focuses light on the radiation sensitive material. The light modulator can modulate the light coupled into the plurality of optical fibers. Exemplary exposure systems can reduce aberrations due to coma and distortion, and provide improved alignment.

The invention relates to the field of communication and measurement control and especially relates to a dual polarization transmit-receive waveguide array antenna. The polarization transmit-receive waveguide array antenna includes N broadband dual polarization antenna sub arrays and a polarization adjusting device. Each broadband dual polarization antenna sub array includes a dual polarization opening waveguide array radiation layer and a network feed layer, wherein the dual polarization opening waveguide array radiation layer is arranged above the network feed layer and the polarization adjusting device is arranged below the network feed layer. By adopting the waveguide grid structure for feeding a plate satellite antenna, the working bandwidth of the plate satellite antenna is enlarged,share of transmit-receive of antenna opening and face is realized, radiation grating lobe is reduced and an interface is provided for automatic adjustment of electromagnetic wave polarization direction.

An arrayed waveguide grating including a waveguide array extending between two free propagation regions is disclosed. One free propagation region is coupled to an input waveguide, and the other free propagation region is coupled to output waveguides. In an example, the input-side free propagation region has two sections that are moveable relative to one another. Movement is achieved by using, for example, a thermally responsive actuator that moves the input waveguide a desired distance to compensate for a temperature change. An arm formed of a low thermal expansion coefficient metal may be used as a thermally responsive actuator moving a substrate. In another example, both the input side and the output side free propagation regions have sections moveable relative to one another and, therefore, less movement is required to correct for thermal variations. An NxN arrayed waveguide grating may also be formed.

In the optical connection between multi-layered optical waveguides and photoelectric converting elements or optical waveguide array connectors formed on a substrate, the optical coupling efficiency is to be prevented from degrading due to deviation of the optical axis positions between optical elements and the optical waveguide layers that is caused by a radiation due to a beam expansion or by a deviation of positioning layers in producing the optical waveguides. There are stacked, on a substrate, optical waveguide layers, each of which comprises a clad layer and a core having a higher refractive index than the clad layer, and optical elements formed on the uppermost optical waveguide layer. The optical elements are positioned such that they correspond to the optical path conversion mirrors of the cores of the underlaying optical waveguide layer. The light transmission/reception between the optical elements and the optical path conversion mirrors of the cores of the underlaying optical waveguide layer is performed via the cores of overlying optical waveguide layer.

An optical receiver includes a first substrate including a demultiplexer and a first optical waveguide array. An input of the demultiplexer is configured to receive a wavelength division multiplexed optical input signal having a plurality of channels. Each of the plurality of channels corresponds to one of a plurality of wavelengths. Each of the plurality of outputs is configured to supply a corresponding one of the plurality of channels. The first optical waveguide array has a plurality of inputs. Each of the inputs of the first optical waveguide array is configured to receive a corresponding one of the plurality of channels. A second substrate is in signal communication with the first substrate and includes an optical detector array. The optical detector array has a plurality of inputs, each of which is configured to receive a corresponding one of the plurality of channels and generate an electrical signal in response thereto.

An optical interconnection apparatus including waveguide arrays such as waveguide lenses, waveguide gratings and star couplers, has improved efficiency realized by using a periodic array including in each period a combination of two radial waveguides. The array is formed with angular period α between an input circle and an output circle and it includes an input section, connected to the input circle, and an output section connected to the output circle. The input section includes a single waveguide in each period and it is efficiently coupled with minimal loss to the output section, whose waveguides are approximately arranged with period α/2 in the final region close to the output circle.

The invention discloses a polarization-insensitive array waveguide grating wavelength division multiplexing device which comprises one or multiple input waveguides, an input slab waveguide, multiple array waveguides, an output slab waveguide and one or multiple output waveguide, wherein one end of each of array waveguides is connected with the input slab waveguide, and the other end of each of array waveguides is connected with the output slab waveguide; a forward direction single polarization mode converter is arranged between each input wave guide and the input slab waveguide and a reverse direction single polarization mode converter is arranged between each output waveguide and the output slab waveguide. The polarization-insensitive array waveguide grating wavelength division multiplexing device is simple in structure and convenient to design, and does not need to specially design parts, such as a slab waveguide zone and a waveguide array; and a standard process for making the array waveguide grating is just needed without introducing extra complex processes, and the device is not sensitive to the process deviation. The polarization-insensitive array waveguide grating wavelength division multiplexing device is suitable for N*N array waveguide grating, and is also suitable for the situation of a large amount of channels.