Abstract: Electrical and/or optical connector housing (11) with a wet-mateable connector receiving part (17), adapted to receive a mating electrical and/or optical connector counterpart when surrounded by a hydrostatic pressure, such as the pressure of surrounding water. The connector housing (11) exhibits a compartment (19) that is pressure balanced with respect to said hydrostatic pressure, wherein one or more electrical and/or optical conductors (21) are guided from the receiving part (17) to a penetrator (15), said penetrator (15) constituting a pressure barrier between said compartment (19) and an opposite end of the penetrator (15). The housing (11) comprises at least one wall part (29) adapted to be flexed by an exterior hydrostatic pressure exerting force on the housing (11), thereby changing the volume of said inner compartment (19), whereby said wall part (29) constitutes at least a part of the encapsulation of said compartment (19).

Abstract: An optoelectronic transmission device includes an optical signal source, a light detector, a solar cell unit, and a power storage unit. The reflector covers the light detector and the optical signal source. The reflector is configured to internally totally reflect first light emitted from the optical signal source to a first optical fiber and reflect a first part of the second light from a second optical fiber to the light detector and reflect a second part of the second light to the solar cell unit. The light detector receives and converts the first part of the second light into electrical signals. The solar cell unit receives and coverts the second part of the second light into electrical energy. The power storage unit is electrically connected to the solar cell unit for storing the electric energy. The power storage unit powers the light detector and the optical signal source.

Abstract: An optical power limiter comprises an input optical transmission element, an output optical transmission element, and a power-limiting element disposed between the input and output elements for transmitting optical signals from the input element to the output element. The power-limiting element comprises an optical-limiting solid mixture containing particles of at least one material that produces reversible thermal changes in response to light above a predetermined optical power level, thereby changing the optical transmission properties of the power-limiting element.

Abstract: The present invention relates to an optical fiber cable incorporating a multi-core fiber provided with a plurality of cores and a cladding region. The optical fiber cable has a jacket covering the multi-core fiber. The multi-core fiber is arranged so that a hold wrap holds the cores in a state in which they are provided with a bend of not more than a fixed radius of curvature, in order to reduce crosstalk between the cores.

Abstract: An integrated semiconductor optical device includes first and second semiconductor optical devices. The first semiconductor optical device includes a first core layer, a first upper cladding layer including a first ridge portion, a first buried layer surrounding the first ridge portion, and a first adjusting layer provided between the first buried layer and the first ridge portion. The second semiconductor optical device includes a second core layer, a second upper cladding layer including a second ridge portion. The first semiconductor optical device and the second semiconductor optical device are arranged next to each other in a predetermined axis direction. The first core layer is joined to the second core layer by a butt joint method at a joint boundary between the first and second semiconductor optical devices. The first adjusting layer has a refractive index lower than a refractive index of the first core layer and higher than a refractive index of the first buried layer.

Abstract: An optical device includes a substrate having an electro-optical effect; a main waveguide provided on the substrate; a first Mach-Zehnder part having first waveguides provided on the substrate and coupled with the main waveguide, and first DC electrodes provided between the first waveguides and on the first waveguides and used to generate DC electric fields in the first waveguides; and second Mach-Zehnder parts respectively associated with the first waveguides and comprising second waveguides coupled with each of the first waveguides and second DC electrodes used to generate DC electric fields in the second waveguides, at least one of the second Mach-Zehnder parts being configured to have no second DC electrode provided between the second waveguides and have the second DC electrodes on the second waveguides.

Abstract: A method for connecting optical fibers and a connection structure of optical fibers capable of suppressing axial misalignment between cores in end-to-end connection of optical fibers at least one of which has a clad for a non-circular shape.

Abstract: An optical fiber connecting part has a ferrule, and a guide bore penetrating through the ferrule and configured to guide an optical fiber to be inserted. The guide bore has a first bore provided at one end of the ferrule, through which the optical fiber is inserted into the ferrule, a second bore provided at another end of the ferrule, the second bore having an inner diameter smaller than an inner diameter of the first bore, and an intermediate bore provided between the first bore and the second bore to directly connect between the first bore and the second bore. A center axis of the second bore is shifted from a center axis of the first bore.

Abstract: An optical connector having a front and back orientation and suitable for operating with a temperature range, the connector comprising: (a) a ferrule comprising a first material having a first coefficient of thermal expansion (COE), and having no greater than a first diameter below a transition temperature with the temperature range, and no less than a second diameter above the transition temperature; (b) a spring disposed behind the ferrule and in contact with the ferrule to apply a forward urging force to the ferrule; and (c) a housing comprising a second material having a second COE, the housing defining a bore hole having a diameter greater than the second diameter, and an interface portion having a restricted bore hole having no greater than a third diameter below the transition temperature, and no less than a fourth diameter above the transition temperature.

Abstract: Systems, methods and apparatuses are described for a continuous line process of printing a digital continuously variable image on a textile. The systems and methods provide for accomplishing all tasks associated with printing a textile simultaneously for multiple textiles at varying stages of the printing process without interruption.

Abstract: An assembly of fiber optic elements includes at least two subunits, each of which has at least one fiber optic unit and a flat binder wrapped over the subunits into an arrangement. The at least two subunits are stranded in a S-Z arrangement at a first lay length and the binder is stranded over the subunits in a uni-directional helical lay at a second lay length. The payoff tension and the first lay length of the subunits, combined with a payoff tension and the second lay length of the binder are simultaneously sufficient to hold the subunits within the arrangement, while being loose enough to allow a single subunit to be removed without destroying the arrangement.

Abstract: The present invention provides a device is provided for use with a first through fourth light beams. The device includes a first through fourth waveguides and first through fourth light scattering portions. The first waveguide has a length and a width and is arranged to receive the first light beam, wherein the length is larger than the width. The second waveguide is parallel with the first waveguide and is arranged to receive the second light beam. The third waveguide is disposed perpendicularly to and intersecting with the first waveguide and the second waveguide. The third waveguide is arranged to receive the third light beam. The fourth waveguide is parallel with the third waveguide and is disposed perpendicularly to and intersecting with the first waveguide and the second waveguide. The fourth waveguide is arranged to receive the fourth light beam. The first light scattering portion is disposed at the intersection of the first waveguide and the third waveguide.

Abstract: A splittable optical fiber ribbon has a decreased propensity for fiber fallout along a longitudinal split. Fibers adjacent to a split location, called border fibers, have increased bond strength between their ink-coating and a surrounding matrix material. The bond strength is increased by first partially curing an ink that covers the border fibers, coating the partially-cured fibers with a matrix material, and then substantially fully curing the ink and the matrix material substantially simultaneously. The ribbon may include one or more grooves to enhance splitting the ribbon into subsets.

Abstract: An integrated semiconductor optical device includes first and second semiconductor optical devices. The first semiconductor optical device includes a first core layer, a first upper cladding layer including a first ridge portion, a first buried layer surrounding the first ridge portion, and a first adjusting layer provided between the first buried layer and the first ridge portion. The second semiconductor optical device includes a second core layer, a second upper cladding layer including a second ridge portion. The first semiconductor optical device and the second semiconductor optical device are arranged next to each other in a predetermined axis direction. The first core layer is joined to the second core layer by a butt joint method at a joint boundary between the first and second semiconductor optical devices. The first adjusting layer has a refractive index lower than a refractive index of the first core layer and higher than a refractive index of the first buried layer.

Abstract: A fiber optic cable assembly includes a main fiber optic cable and a pre-connectorized fiber optic cable assembly. Optical fibers of the main fiber optic cable are mass fusion spliced to optical fibers of the pre-connectorized fiber optic cable assembly thereby forming a mass fusion splice. The mass fusion splice is positioned within an outer jacket of the main fiber optic cable. A reinforcing member and a protective transition member are applied to make the fiber optic cable assembly. A method of making the fiber optic cable assembly is also disclosed.

Abstract: A printing method that uses ink jet recording with a water-based ink set to form an image on a non-ink-absorbing or low-ink-absorbing recording medium, the method includes a printing step including recording with a color ink and recording with a resin ink performed after the recording with the color ink; and a drying step performed during the printing step and/or after the printing step. In the printing method, the water-based ink set includes the color ink containing a water-insoluble coloring agent and the resin ink not containing a coloring agent. The color ink contains the water-insoluble coloring agent, a resin component, a water-soluble solvent, and a surfactant. The resin ink contains a water-soluble resin solvent, a wax, and thermoplastic resin particles as a resin component that are insoluble in water but compatible in the water-soluble resin solvent.

Abstract: A speed calculation device is provided. The generation component generates a plurality of pulse signals with different phases in accordance with rotation of a rotating body. The detection component detects rises and falls of respective pulses of the plurality of pulse signals generated by the generation component. The duration calculation component, each time a rise or fall is detected by the detection component, calculates a total duration of a pre-specified number of durations representing detection intervals of rises or falls detected by the detection component prior to the current rise or fall detected by the detection component. The speed calculation component calculates a speed relating to rotation of the rotating body on the basis of the total duration and a rotation angle of the rotating body that corresponds to one pulse of the pulse signals.

Abstract: A process for manufacturing an optical fiber includes: drawing an optical waveguide from a glass preform; applying a layer of a first coating material on the optical waveguide; curing the first coating layer material to obtain a first coating layer; applying a layer of a second coating material onto the first coating layer; applying a layer of colored coating material onto the second coating layer; curing the second coating material and the colored coating material in a single step to obtain a second coating layer superposed on the first coating layer and a colored coating layer superposed on the second coating material layer, the obtained second coating layer having an elastic modulus higher than that of the first coating layer and lower than that of the colored coating layer. An optical fiber and an apparatus for producing it are also provided.

Abstract: A fiber-to-fiber connector system that includes a first connector for housing a portion of a first fiber, where the first fiber is terminated by a first end-face. The fiber-to-fiber connection system also includes a second connector for housing a portion of a second fiber, where the second fiber is terminated by a second end-face, where the first connector and the second connector permit the first fiber and the second fiber to be interconnected to form an air gap interface between the first end-face and the second end-face; the air gap interface defines a spacing between the first end-face and the second end-face; and the air gap interface enables, based on the defined spacing, an optical signal to be transmitted between the first fiber and the second fiber with a fixed quantity of attenuation.

Abstract: A print control apparatus includes: an operation state storing section that stores operation information relating to operation states of a plurality of printing elements arranged in a printing head; and a drawing controlling section that causes the plurality of printing elements to draw a test image for checking the operation states of the plurality of printing elements, wherein the test image includes a set of a predetermined number of lines that are drawn in parallel with one another in a predetermined direction, and the drawing controlling section causes a printing element placed in the vicinity of a printing element determined as a malfunction on the basis of the operation information, to draw a check line having a predetermined length and thickness in the test image.