Abstract: An optical modulator comprises a Z-cut lithium niobate substrate on which is formed a Mach-Zehnder interferometer having two generally parallel waveguides lying beneath a buffer layer of dielectric material. First and second ground electrodes and a hot electrode are disposed on the buffer layer, the first and second ground electrodes being spaced either side of the hot electrode, the hot electrode and the first ground electrode being proximate to at least apart of the respective waveguides. The electrode structure is unsymmetrical in that (a) the hot electrode and the first ground electrode each have a width substantially less than that of the second ground electrode and or (b) the spacing between the first ground and hot electrodes is different from the spacing between the second ground and hot electrodes. whereby a range of chirp values can be obtained.

Abstract: The present invention is a method and an apparatus for tuning an optical delay line. In one embodiment, an optical delay line includes at least one ring resonator in which light is guided or is confined and at least one heater positioned laterally from the ring resonator. The heater produces heat in a localized area, allowing for the tuning of individual delay elements with minimal crosstalk.

Abstract: A field termination kit includes an optical fiber preparation device for preparing an end of an optical fiber, an optical inspection device for inspecting the end of the optical fiber, and a termination assembly for terminating the end of the optical fiber. A method of using a field termination kit includes rotating an end of a first optical fiber about a center of an abrasive portion of an optical fiber preparation tool. The end is pressed against an adhesive portion of the optical fiber preparation tool to clean contaminants from the end. The end is inserted into an inner passage of an optical fiber inspection device for viewing. The end is inserted into a termination assembly. The end is terminated to an end of a second optical fiber in a termination region of the termination assembly.

Abstract: A MEMS-based display device is described, wherein an array of interferometric modulators are configured to reflect light through a transparent substrate. The transparent substrate is sealed to a backplate and the backplate may contain electronic circuitry fabricated on the backplane. The electronic circuitry is placed in electrical communication with the array of interferometric modulators and is configured to control the state of the array of interferometric modulators.

Abstract: Integrated optical subassemblies (OSA) such as integrated transmit and receive optical subassemblies that may be implemented with an optical transceiver module that includes a molded body. The integrated OSA includes a mounting surface defined on a vertical portion of the molded body, a wall extending about the mounting surface, at least one optoelectronic device, such as a laser diode or a photodiode mounted on a transimpendence amplifier, positioned on the mounting surface, a plurality of bond pads included on the mounting surface in electrical connection with the at least one optoelectronic device, a plurality of conductive feedthroughs defined through the mounting surface, each feedthrough being in electrical communication with a corresponding one of the bond pads; and an optical fiber port that engages the wall extending about the mounting surface, wherein the optical fiber port is configured for receiving an optical fiber cable.

Abstract: A light emitting device including an array of light emitters to emit first light pulses. Each of the light emitters includes a saturable absorber and a waveguide having an electrically pumped gain region to emit the first light pulses. At least one reflector structure reflects the first light pulses into a nonlinear crystal by changing the direction of the first light pulses by an angle that is in a range of 70 to 110 degrees. The reflector structure includes a sub-wavelength grating structure to change the polarization of the first light pulses. A nonlinear crystal generates second light pulses such that the optical frequency of the second light pulses is two times the optical frequency of the first light pulses.

Abstract: An optical fiber comprising a flame retardant UV light-curable tight-buffer coating coated onto the fiber, wherein said tight-buffer coating is substantially halogen-free, and has a limiting oxygen index of at least about 22%, and wherein said tight-buffer coating is removable from said fiber with a strip-force of less than about 1800 grams when the fiber is upjacketed with said coating at a line speed of at least 300 m/min.

Abstract: An impact-sensing, thermal insulation system includes a light source; an optical detector; and an optically-transmissive insulation optically coupled with the light source and the optical detector, the optically-transmissive insulation being operably associated with an outer surface of a pressure vessel. A missile includes a body; a propulsion system including a pressure vessel having an outer surface; and an impact-sensing, thermal insulation system operably associated with the outer surface of the pressure vessel. The impact-sensing, thermal insulation system includes a light source; an optical detector; and an optically-transmissive insulation optically coupled with the light source and the optical detector, the optically-transmissive insulation being operably associated with the outer surface of the pressure vessel.

Abstract: Provided are an optoelectric printed circuit board (PCB) including an optoelectric transmission metal track and a dielectric layer, an optoelectric transmission method using the optoelectric PCB, and a method of manufacturing the optoelectric PCB. The optoelectric transmission method includes injecting light and electricity to the optoelectric PCB including at least one optoelectric transmission metal track and a dielectric layer contacting the optoelectric transmission metal track. The injected light and electricity are transmitted through the optoelectric PCB. The transmitted light and electricity are emitted from the optoelectric PCB.

Abstract: A waveguide sensor according to an embodiment of the present invention includes: a substrate; a first underclad arranged on one side of the substrate; a first sensing core arranged on outer side of the first underclad and having a stripe pattern which extends in one direction; a first overclad arranged on outer side of the first sensing core; a second underclad arranged on another side of the substrate; a second sensing core arranged on outer side of the second underclad and having a stripe pattern which extends in a direction not parallel to the direction in which the first sensing core extends; and a second overclad arranged on outer side of the second sensing core. A first grooved part which extends in a direction not parallel to the direction in which the first sensing core extends is formed on the first overclad, so that the first grooved part and the first sensing core together form a first grating in a plane view.

Abstract: Structural member bend radius sensor apparatus 90 comprises three fibre Bragg grating (FBG) strain sensors 102 provided within three optical fibres 14, 16, 18. The optical fibres 14, 16, 18 and the FBGs 102 are embedded within a part-cylindrical shaped carrier member 92. The fibres 14, 16, 18 are provided at three spaced locations across the shaped carrier member 92 so that, in use, the three respective FBG strain sensors will be located at three different angular positions around the circumference of the structural member (pipe) 68. Structural member shape measurement apparatus 100 comprises four bend radius sensor apparatus 90 provided at four bend radius measurement positions along the pipe 68. The four bend radius sensor apparatus 90 shown share their optical fibres 14, 16, 18, and a single shaped carrier member 92. The shape measurement apparatus 100 further comprises FBG interrogation apparatus 104.

Abstract: In a display apparatus and a manufacturing method of the display apparatus, the display apparatus includes a display panel having signal lines and an insulating layer, and a signal generator electrically connected to the signal lines and adhering to the display panel. The signal lines include pads formed at ends thereof, respectively. The organic insulating layer is partially removed such that the via holes are formed between the pads of the signal lines to reduce a step-difference between an area in which the pads are formed and an area in which the pads are not formed. Thus, the display apparatus may enhance the coupling force between the signal generator and the display panel.

Abstract: An object of the present invention is to provide an image display device that is free from disconnection in a connection structure between given substrates even when operated in a hot and humid environment. An image display device according to a preferred embodiment of the invention has a TFT substrate and an FPC. The TFT substrate has a plurality of first terminals capable of application of potential. The FPC has second terminals that are connected respectively with the first terminals through an anisotropic conductive film and that are thicker than the first terminals. The second terminals include a high-potential terminal, a low-potential terminal, and a dummy terminal. The high-potential terminal is supplied with a relatively high potential that contributes to the display operation. The low-potential terminal is supplied with a relatively low potential that contributes to the display operation.

Abstract: A method for fabricating liquid crystal (LC) alignment includes the steps of processing an alignment film having a plurality of liquid crystal molecules with a single or plurality of plasma generating devices, such that the liquid crystal molecules are aligned at a high pretilt angle. Compared with the prior art, the present invention is suitable for modifying the alignment film surface adjustablely in directions and angles, and can attain the effect of alignment stability with a high pretilt angle in a single process, thus overcoming the drawbacks of the prior art.

Abstract: To provide a highly conductive Cu alloy which is advantageous in that an alloying element added to Cu is first reacted with oxygen contained in a gas atmosphere or solid in contact with the Cu member to form an oxide film which can prevent oxidation of Cu. The copper alloy comprises copper (Cu) containing an inevitable impurity, and an element added to the copper, wherein the added element is capable of being dissolved in the copper in an amount of 0.1 to 20 at. %, wherein the added element has an oxide formation free energy smaller than that of Cu and has a diffusion coefficient in Cu larger than the self-diffusion coefficient of Cu.

Abstract: A transflective liquid crystal display device includes first and second substrates facing each other, a gate line and a data line on the first substrate, the gate and data lines intersecting each other and defining a pixel region having a transmissive region and a reflective region, a thin film transistor at an intersection between the gate line and the data line, a pixel electrode in the pixel region connected to the thin film transistor, an organic insulating layer on the second substrate, the organic insulating layer including a through-hole in the transmissive region, a reflective electrode on the organic insulating layer in the reflective region, a black matrix on the second substrate, a color filter layer on the second substrate in the pixel region, and a liquid crystal layer between the first and second substrates.

Abstract: A liquid crystal display (LCD) device is disclosed, which comprises a protrusion, and a column spacer being partially overlapped with the protrusion to thereby prevent a cell gap defect. The LCD device includes first and second substrates facing each other and gate and data line crossing each other to define a unit pixel region. In addition a thin film transistor formed adjacent to a crossing of the gate and data lines is included. The protrusions formed on the first substrate correspond with predetermined portions of the gate line. The column spacers are formed on the second substrate with a predetermined portion overlapped with some portion of one of the protrusions. A liquid crystal layer is formed between the first and second substrates.

Abstract: A liquid crystal panel including a liquid crystal cell having an improved contrast ratio in an oblique direction and an improved color shift in an oblique direction is provided. A liquid crystal panel according to the present invention includes: a liquid crystal cell; a first polarizer arranged on one side of the liquid crystal cell; a second polarizer arranged on another side of the liquid crystal cell; a negative C plate and a negative A plate arranged between the liquid crystal cell and the first polarizer; and an isotropic optical element arranged between the liquid crystal cell and the second polarizer. The negative C plate is arranged between the first polarizer and the negative A plate.

Abstract: A photoelectric coupling assembly and manufacturing method thereof enabling a three dimensional electrical wiring pattern is provided. The assembly includes a photoelectric conversion unit equipped with a photoelectric conversion element and a molded article. The molded article has a hole configured and arranged to have an optical fiber inserted there-through such that a distal end of the fiber faces an active layer of the conversion element, a front surface on which the conversion unit is mounted, and a side surface being contiguous to the front surface. The lead being insert molded into the molded article has a first surface being exposed at the front surface and electrically connected to the conversion element, a second surface being exposed at the side surface, and an engaging portion having a width increasing in a direction away from the front surface. At least a portion of the engaging portion is contained inside the resin forming the molded article.

Abstract: A device and a method for the rotary coupling of optical fibers is disclosed. The coupling device includes a first housing element and a second housing element. The coupling device has a rotation axis around which the first and second housing element can rotate relative to each other. The device also includes a first fiber positioning element for the positioning of a section of a first optical fiber relative to the first housing element, a second fiber positioning element for the positioning of a section of a second optical fiber relative to the second housing element, and a fiber guiding body in which a fiber guiding capillary is constructed. The fiber guiding capillary extends continuously along the rotation axis from a first fiber insertion opening for the reception of an end section of the first optical fiber, to a second fiber insertion opening for the reception of an end section of the second optical fiber.