Abstract: A structure includes a channel waveguide and a pocket adjacent to an input facet of the channel waveguide. A laser having an output facet is positioned in the pocket. The structure includes a stop on either the laser or a wall of the pocket. The stop is positioned at an interface between the laser and the wall of the pocket such that the output facet of the laser and the input facet of the waveguide are separated by a gap.

Abstract: An optical assembly can be formed by providing a frame made of a plastic material on a surface of a printed circuit board (PCB), mounting at least one opto-electronic element on the surface of the PCB within the frame, and laser-welding a lens device onto the frame.

Abstract: The present invention provides an inkjet printing apparatus and an inkjet printing method for printing a high-definition image while improving glossiness of the image surface without causing complication and enlargement of the apparatus. A plurality of inks are ejected from first and second printing heads so that a weighted average of a printing rate for each scan regarding an ink having the highest lightness becomes the largest among the plurality of inks and so that a maximum value regarding the printing rate of the ink having the highest lightness becomes larger than those of other inks.

Abstract: An image forming apparatus including a receiving part for receiving an image forming request, a conveyor belt for rotating and conveying a recording paper, a charging part for applying charges to the conveyor belt, and an image forming part for forming an image on the recording paper is disclosed. The image forming apparatus includes a cleaning part configured to clean a surface of the conveyor belt by rotating the conveyor belt and setting a contacting member in contact with the surface of the conveyor belt when a bias voltage of the charges is reduced. The cleaning part is configured to clean the surface of conveyor belt when a printing process and a post-printing process are completed by the image forming part and no subsequent image forming request is received by the receiving part.

Abstract: An optical phase modulator and modulation method is disclosed. An optical splitter diverts a portion of an input light signal into at least one diverted light signal, and at least one optical amplifier amplifies the at least one diverted light signal to provide at least one amplified light signal. At least one static phase shifter statically phase shifts the at least one amplified light signal to provide at least one phase-shifted diverted light signal, and an optical combiner combines the input light signal with the at least one phase-shifted diverted light signal to provide a phase-shifted combined light signal.

Abstract: A broadly tunable optomechanical apparatus includes a resonator component consisting of two coupled optical microring resonators disposed in a stacked relationship, an input waveguide disposed adjacent a periphery of the resonator component, and a control signal waveguide coupled to the resonator component or the input signal waveguide. A broadband optical switch includes a plurality of resonator components each of which corresponds to a selected signal wavelength, predetermined by the geometry and design of the resonator component, and a respective plurality of output signal waveguides, and a respective plurality of a control signal waveguides each coupled to a respective resonator component. Associated tuning and switching methods and applications are disclosed.

Abstract: A method in a computer-aided design system for generating a functional design model of an integrated circuitry structure including generating a functional representation of at least first and second regions of the integrated circuitry structure, generating a functional representation of an optical layer comprising optical waveguides, and generating a functional representation of a heat-conductive material for transferring heat from at least the second region through the optical layer to a heat sink.

Abstract: Provided are methods of printing a pattern of charge on a substrate surface, such as by electrohydrodynamic (e-jet) printing. The methods relate to providing a nozzle containing a printable fluid, providing a substrate having a substrate surface and generating from the nozzle an ejected printable fluid containing net charge. The ejected printable fluid containing net charge is directed to the substrate surface, wherein the net charge does not substantially degrade and the net charge retained on the substrate surface. Also provided are functional devices made by any of the disclosed methods.

Abstract: An optical printed circuit board is provided. The optical printed circuit board includes an insulation member, an optical fiber disposed in the insulation member and having opposite end portions exposed to a side of the insulation member, and at least one supporting member provided with a guide portion coupled to the opposite end portions of the optical fiber and guiding bending of the optical fiber.

Abstract: A computer system has an optical data distributing device for transmitting and distributing optical signals. A laser source generates light for forming the optical signals, and an optical fiber with a graded index of refraction couples the light from the laser source to the optical data distributing device. A lens is disposed to image light generated by the laser source into an input end of the optical fiber. The magnification of the lens is selected as a function of a ratio of a numerical aperture and diameter of the laser source divided by a ratio of a numerical aperture and diameter of the optical fiber.

Abstract: Through the use of a mask with an appropriate pattern, depending on dot size or density, in an in jet printing apparatus, image defects caused by conveyance distance errors are suppressed. More concretely, at the masking unit A an interlaced mask pattern is used and a masking process is performed with respect to 2 pl dot data obtained from the dot pattern development unit 604. On the other hand, at the masking unit B a random mask pattern is used and masking is performed with respect to 5 pl dot data. Herewith it has become possible, at all gradations, to suppress the 2 image defects, density unevenness and graininess, caused by conveyance distance errors.

Abstract: A 1D nanobeam photonic crystal cavity is provided that includes a substrate, where the substrate includes a dielectric medium, and a series of cutout features in the substrate, where each cutout feature includes a first curved surface and a second curved surface, where the first curved surface and the second curved surface form a meniscus shape, where the series of cutout features include an array of sizes of the meniscus shape cutouts, where edges of the meniscus shape and the array of sizes are disposed to form a pair of opposing parabolic dips proximal to a central region of the series of cutout features.

Abstract: A system for determining properties of a radiant energy beam. The system include a plurality of fiber optic cables each including a first end and a second end and a plurality of optical coupling nodes coupled to a target body, wherein each optical coupling node includes one or more terminations, wherein each termination is coupled to the first end of one of the plurality of fiber optical cables to receive radiant energy from an incident radiant energy beam to determine properties of the radiant energy beam.

Abstract: An optical connector for terminating an optical fiber may include a ferrule, a optical fiber, and an adhesive composition. The ferrule may include a fiber-receiving passage defining an inner surface and the adhesive composition may be disposed within the ferrule and in contact with the inner surface of the ferrule and the optical fiber. The adhesive composition may include a partially cross-linked resin and a thermoset resin. The adhesive composition may include between about 1 to about 85 parts by weight of the thermoset resin per 100 parts by weight of the partially cross-linked resin.

Abstract: Embodiments of the invention describe a multi-segment optical waveguide that enables an optical modulator to be low-power and athermal by decreasing the device length needed for a given waveguide length. Embodiments of the invention describe an optical waveguide that is folded onto itself, and thus includes at least two sections. Thus, embodiments of the invention may decrease the device size of a modulator by at least around a factor of two if the device is folded twofold (device size may be further reduced if the modulator is folded threefold, four-fold, five-fold, etc.). Embodiments of the invention further enable the electrode length required to create the desired electro-optic effect for the multi-segment optical waveguide to be reduced. In embodiments of the invention, certain electrodes may be “shared” amongst the different segments of the waveguide, thereby reducing the power requirement and capacitance of a device having a waveguide of a given length.

Abstract: A light source driving device which drives a plurality of light emitting parts provided in a light source to emit a plurality of light beams based on image information, includes a plurality of driving circuits configured to drive the plurality of light emitting parts. Each of the driving circuits includes a signal generation circuit that generates a modulation signal to control a light emitting intensity of the corresponding light emitting part based on the image information, a detection circuit that detects a light emitting status of the corresponding light emitting part; and a light emitting circuit that outputs a driving signal to the corresponding light emitting part to emit a light beam in accordance with the modulation signal and adjustment data obtained based on the light emitting status of at least one of the plurality of light emitting parts.

Abstract: Light guiding structures are provided to improve the light coupling between photonic active devices and the top of a metallization layer stack interconnecting these photonic active devices. Each light guiding structure comprises a hole extending between the near surface of the photonic active devices and the top surface of the metallization layer stack, said hole being filled with dielectrics or a combination of dielectrics and metals. Such a light guiding structure removes from the optical path of light rays, the interfaces between the metallization layers, thereby confining light laterally and enabling interconnects with increased thickness and more levels of metal. This results in the suppression of multiple reflections and optical crosstalk. The light guiding structures can have cross-section diagonals with sub-wavelength dimensions can be fabricated after all CMOS process steps, thus having minimal interference and maximal compatibility with CMOS processing.

Abstract: An optical interposer comprising: (a) a substrate having a planar surface: (b) at least one groove defined in the planar surface and extending from an edge of the substrate to a terminal end, the groove having side walls and a first facet at the terminal end perpendicular to side walls, the facet having a first angle relative to the planar surface, the first angle being about 45 degrees; and (c) a reflective coating on the first facet.

Abstract: A process of manufacturing an optical flexible circuit comprising: (a) disposing an adhesive layer on at least a portion of a carrier film, said adhesive layer having a downward adhesive face and an upward adhesive face, said downward adhesive face and said carrier film being configured such that said carrier film is removable from said downward adhesive face without disruption of said downward adhesive face; (b) routing one or more fibers on said upward adhesive layer; (c) coating said fibers to define an optical circuit; and (d) optionally parting said carrier film to separate said optical circuit from other optical circuits on said carrier film.

Abstract: Compensation is performed for nonuniformity in a printer. The printer has a photoreceptor and a print head with a plurality of different light sources, each light source capable of producing a plurality of different levels of light. A plurality of stored gain control signals for each light source are related to the light output of that light source. Print job data includes screened pixel levels and a halftone screen specification. The stored gain control signals are adjusted based on the halftone screen specification. The screened pixel levels are modified using the adjusted gain control signals to provide engine pixel levels. Those levels are provided to corresponding light sources to expose the photoreceptor in respective pixel areas with light corresponding to the compensated pixel levels.