Abstract: A photo-conductive switch package module having a photo-conductive substrate or wafer with opposing electrode-interface surfaces metalized with first metallic layers formed thereon, and encapsulated with a dielectric encapsulation material such as for example epoxy. The first metallic layers are exposed through the encapsulation via encapsulation concavities which have a known contour profile, such as a Rogowski edge profile. Second metallic layers are then formed to line the concavities and come in contact with the first metal layer, to form profiled and metalized encapsulation concavities which mitigate enhancement points at the edges of electrodes matingly seated in the concavities. One or more optical waveguides may also be bonded to the substrate for coupling light into the photo-conductive wafer, with the encapsulation also encapsulating the waveguides.

Abstract: Provided are optical coupling devices and silicon photonics chips having the same. the optical coupling device may include a lower layer having a first region and a second region, a first core layer disposed on the lower layer, the first core layer including first and second waveguides disposed on the first and second regions, respectively, a clad layer covering the first waveguide, and a second core layer interposed between the clad layer and the lower layer to cover the second waveguide. The second waveguide has a width decreasing with increasing distance from the first region and a vertical thickness greater than that of the first waveguide.

Abstract: An optical communication connector having a connector housing that includes opposite mating and loading sides and a housing cavity that extends therebetween. The optical communication connector also includes an optical module that is positioned within the housing cavity and a biasing element that is positioned between the optical module and the loading side in the housing cavity. The biasing element has a module end, a back end, and a resilient spring portion that extends between the module and back ends. The spring portion includes an elongated body having a plurality of flexible bend segments that wrap back-and-forth within a spring plane. The spring portion is compressible between first and second states during a mating operation between the optical module and an optical connector.

Abstract: An optical connector includes: a holding member that holds an optical transmission line; a lens member that has a lens; a concavo-convex structure provided between the holding member and the lens member; and a moving member that moves the concavo-convex structure between a first state where a protrusion and a recess of the concavo-convex structure are engaged with each other and a second state where a gap is formed between the protrusion and the recess.

Abstract: A liquid crystal display is provided that includes: a first substrate; a second substrate facing the first substrate; a switching element disposed on the first substrate; a pixel electrode connected to the switching element; a common electrode disposed on the second substrate; a liquid crystal layer disposed between the first substrate and the second substrate; an alignment layer disposed on at least one of the pixel electrode and the common electrode; and alignment aids in at least one of the liquid crystal layer and the alignment layer. The pixel electrode includes a first cutout, the common electrode includes a second cutout, and the first cutout and the second cutout are alternately arranged.

Abstract: An optical device is provided with an optical unit for forming an optical path of a laser beam, and a housing defining an internal space for accommodating the optical unit. The housing includes a partition for dividing the internal space into a first space and a second space. The optical unit includes a sensor arranged in the first space to detect the laser beam in the second space, a mirror arranged in the second space to define a direction of the optical path, a drive source arranged in the second space to operate the mirror to adjust the direction of the optical path, a power line for supplying power to the drive source, and a signal line for transmitting an output signal of the sensor. The signal line extends in the first space and the power line extends in the second space.

Abstract: A droplet generating device for use as part of a continuous inkjet printer comprises a set of channels for providing a composite flow of a first fluid (11) surrounded by a second fluid (12) and an expansion cavity (3) having an entry orifice (2) and an exit orifice (4). The cross sectional area of the cavity is larger than the cross sectional area of either orifice such that the composite flow breaks up to form droplets of the first fluid within the second-fluid within the cavity, the exit orifice also forming a nozzle of an inkjet device, the passage of the droplets of the first fluid through the exit orifice causing the composite jet to break into composite droplets.

Abstract: An ink jet printing apparatus inhibits the temperature of a print head from increasing excessively while preventing significant density or hue unevenness from occurring in images, without the need for a complicated structure or complicated control. Thus, the temperature of the print head is detected, and the number of scans in which the print head is to stand by until start of scanning and a standby time for each of the set number of scans by the print head are set, on the basis of the detected temperature.

Abstract: An assembly tool is provided for installing an optical fiber in an optical fiber connector having a known length of fiber extending from the connector ferrule after termination of the optical fiber connector. The assembly tool includes a base having a connector mount disposed on a first end thereof and a cradle that holds a shaped ferrule disposed near the second end of the base, such that shaped ferrule is resiliently held within the cradle. The connector mount is configured to receive and secure the optical fiber connector to the base.

Abstract: A backlight is disclosed and includes a visible light transmissive body primarily propagating light by TIR with a light input surface and a light output surface and a light guide portion and a light input portion. The light guide portion has a light reflection surface and a light emission surface. The light input portion has opposing side surfaces that are not parallel. One of the opposing surfaces is co-planar with either the light emission surface or the light reflection surface. A light source is disposed adjacent to the light input surface. The light source emits light into the light input portion. A reflective layer is disposed adjacent to or on the opposing side surfaces.

Abstract: The specification describes multimode optical fibers produced by improved methods that reduce the manufacturing cost. These methods may also be more efficient in terms of power loss. In one of the embodiments, the improved design has a large core of pure silica derived from a rod-in-tube method. In the embodiment, a down-doped cladding is produced by depositing fluorine-doped silica on the inside of a silica starting tube using isothermal radio frequency plasma deposition. The silica core is inserted and the starting tube collapsed. The silica starting tube is removed and optical fiber is drawn from the fluorine-doped glass coated silica rod.

Abstract: The invention relates to an optical-electrical wiring board (2) and an optical module (1). The optical-electrical wiring board (2) includes a substrate (8), a dielectric layer (11), first conductive layers (16a) and second conductive layers (16b). The dielectric layer (11) includes a first region (B) and a second region (C). The first region (B) constitutes a plurality of light transmission portions (11B). The second region (C) has a plurality of pairs of conductive layers each having an overlap portion (10) in which one of the plurality of second conductive layers (16b) and one of the plurality of first conductive layers (16a) overlap each other when seen through in a laminated direction (a) of the dielectric layer (11) and the substrate (8).

Abstract: A printing apparatus includes: a liquid discharge head which includes a nozzle which discharges a liquid, and a discharge energy applying section which applies a discharge energy to the liquid to be discharged from the nozzle; a drive section which drives the discharge energy applying section; and a controller which controls the drive section based on a parameter about a usage amount of the discharge energy applying section; and when one dot is formed on a printing medium by discharging the liquid, if a predetermined threshold value is not exceeded by the parameter, the controller controls the drive section to drive the discharge energy applying section so that a first discharge energy is applied to the liquid, and otherwise, the controller controls the drive section to drive the discharge energy applying section so that a second discharge energy lower than the first discharge energy is applied to the liquid.

Abstract: An optical fiber combiner 1 has: a plurality of input optical fibers 20; a plurality of divergence angle reducing members 50 which lights emitted from the respective input optical fibers 20 enter and which emits the lights from the input optical fibers 20 at divergence angles made lower than divergence angles upon entrance; a bridge fiber 30 which the lights emitted from the respective divergence angle reducing members 50 enter and which has a tapered portion 34 which has a portion in which the lights propagate and a diameter of which is gradually reduced apart from a divergence angle reducing member 50 side; and an output optical fiber 40 which a light emitted from a side of the bridge fiber 30 opposite to the divergence angle reducing member 50 side enters.

Abstract: Wind turbine blade comprising a sensor system with an optical path comprising a first optical sensor fiber, a second optical sensor fiber and a patch optical fiber, the first optical sensor fiber including a first core with a first core diameter wherein the first optical sensor fiber extends from a first end to a second end and comprising at least one sensor, the second optical sensor fiber including a second core with a second core diameter, wherein the second optical sensor fiber extends from a first end to a second end and comprising at least one sensor, the patch optical fiber including a patch core with a patch core diameter, wherein the patch optical fiber extends from a first end to a second end and connects the first optical sensor fiber and the second optical sensor fiber, wherein the first core diameter is the same as the patch core diameter.

Abstract: An image forming apparatus includes a light source which illuminates in response to image data, and a deflector to deflect an optical beam output from the light source into a scanning beam running along a main scanning line across an image forming area in a main scanning direction. There are plurality of beam detectors to detect the scanning beam at a plurality of different positions along the main scanning line, the plurality of beam detectors including first and second beam detectors detecting the scanning beam at positions in front-end and rear-end sides, respectively, in the main scanning direction.

Abstract: A recording head control method prevents head coil burnout caused by heat output while suppressing a drop in printer throughput. A control method for a recording head 18 of a dot impact printer 100 that prints information on a recording medium S by driving the recording wires 9 of a recording head 18 that has a plurality of recording wires 9 while a carriage 19 that carries the recording head 18 traverses the recording medium S, each of the recording wires 9 being allocated to printing one dot line in the scanning direction of the carriage 19, the control method including steps of: during dot line printing, determining before printing if the number of previously defined specific dot patterns P1, P2 contained in the dot line to be printed is greater than or equal to a reference number N of 2 or more; and printing the dot line based on the result of the decision.

Abstract: A light source unit includes a surface-emitting laser array including light emitting units; and an apertured member provided on a light path of light beams emitted from the surface-emitting laser array, the apertured member including an aperture. In at least one direction, an intensity distribution of interference patterns caused by the light beams passing through the aperture includes an equal number of crests and troughs.

Abstract: The present invention is directed to a liquid metal clamp, and a clamp system and method including same. A clamp system includes a first clamp configured to hold a first portion of a set of fibers and a second clamp configured to hold a second portion of the set of fibers, the second clamp comprising a liquid metal that takes a liquid form at a first temperature for receipt of the second portion of the set of fibers and that takes a solid form at a second temperature to secure the second of the set of fibers. The set of fibers can be a single fiber or a plurality of fibers. The fiber or fibers can have a circular or non-circular cross section.

Abstract: A filter and fabrication process for a thin film filter that is based on frustrated total internal reflection and multiple waveguide layers, in which the waveguide modes are resonantly coupled. The physics of the design is related to prism coupling of light into planar waveguides, and waveguide coupling between planar waveguides in close proximity. Embodiments include a filter that acts as a bandpass filter and polarizer, a filter that acts as a bandpass filter, polarizer and angle filter (spatial filter), a filter that is widely tunable, and a filter that is widely tunable in both peak transmission wavelength and width. Methods of fabrication are disclosed, and methods to correct for manufacturing errors in thin film deposition are described. The filter embodiments can also be used in reflection as notch filters in wavelength and angle, for a particular polarization component.