Abstract: The invention relates to a test adapter (1) for operatively connecting a chip to be tested to a test device. The test adapter has a three-dimensional construction with a baseplate (8) and a cover plate (2). The cover plate (2) has a contact array (3) having contact elements (9) coordinated with the chip to be tested in terms of number and arrangement. Arranged between the baseplate (8) and the cover plate (2) are side walls (4) which are arranged at an angle with respect to the cover plate (2) and have a number of individual connectors (5) that is coordinated with the chip to be tested.

Abstract: An light emitting device package and a backlight unit using the same are disclosed, wherein light advancing upward from the light emitting device package can be refracted by a lens to enable the light having a uniform intensity to be emitted upwards to the advantage of efficiency and power consumption, even with a small number of light emitting devices.

Abstract: An optical communication cable is provided. The cable includes a plurality of elongate optical transmission elements wrapped around an elongate central strength member such that a portion of the length of the plurality of wrapped elongate optical transmission elements form a spiral portion around the elongate central strength member. The cable includes an elastic sleeve surrounding the plurality of elongate optical transmission elements, and the elastic sleeve is formed from an extruded first material. The cable includes a cable body formed from an extruded second material different from the first material, and the cable body surrounds the film, and the cable body has an inner surface that faces the outer surface of the film.

Abstract: An optical waveguide structure may include a dielectric layer having a top surface, an optical waveguide structure, and an optical coupler embedded within the dielectric layer. The optical coupler may have both a substantially vertical portion that couples to the top surface of the dielectric layer and a substantially horizontal portion that couples to the optical waveguide structure. The substantially vertical portion and the substantially horizontal portion are separated by a curved portion.

Abstract: The invention relates to a device for splicing fiber optic lines having a first and second holder for direct or indirect receiving of at least one fiber optic line each, an alignment means for aligning the ends of the fiber optic lines received in the first and in the second holder to one another and electrodes in the region of the ends of the fiber optic lines aligned to one another for creating a slice connection. The two holders on one side and the alignment means and preferably the electrodes on the other side can move relative to one another between a splicing position and a release position such that the splice connection is released in the release position.

Abstract: A pluggable bi-directional optical transceiver may include: a transmitting laser diode, for transmitting an optical signal according to a received electronic signal; an optical sensor, for receiving the optical signal and for generating the electronic signal according to the received optical signal; a fiber adapter, having a ceramic ferrule with two 8-degree end-face corners; a coupling portion, having three different openings for respectively receiving the transmitting laser diode, the optical sensor, and one end of the ceramic ferrule so an optical axis of a transmitting light of the transmitting laser diode is configured to deflect about 3.8 degrees with an optical axis of the ceramic ferrule; and an engaging portion, having a hollow shell for receiving another end of the ceramic ferrule and an engaging piece surrounding outside the shell for pluggably connecting an external fiber piece.

Abstract: A fixing module for gripping an optical fiber includes a support member, a fastening member, and a locking member. The support member includes a fixing portion defining a receiving portion. The fastening member comprises a first resisting portion and a second resisting portion slantingly connected with the first resisting portion. The first resisting portion comprises a first resisting surface facing the bottom of the receiving portion. The second resisting portion comprises a second resisting surface facing the bottom of the receiving portion. The fastening member is received in the receiving portion, and the locking member sleeved on the fixing portion. The first resisting surface and the second resisting surface resist the bottom of the receiving portion in turn as the locking member slides along the fixing portion.

Abstract: A method for fabricating a sensor is provided, with the sensor including a reflective element and an optical fiber positioned relative to the reflective element such that light emitted from the optical fiber is reflected by the reflective element and propagates in an optical cavity between the optical fiber and the reflective element. The method includes positioning an element within the optical cavity. The element has a coefficient of thermal expansion and a thickness that compensate a refractive index change with temperature of a medium within the optical cavity.

Abstract: Systems for leveling UV-curable gel ink include a leveling belt member having a TEFLON FEP inner layer and a conformable silicone outer layer. A UV source is disposed to direct light through the belt onto a substrate at a leveling or pressure nip defined by the leveling beltz tube and a backing member such as a backing belt and chilled platen.

Abstract: A system and method are disclosed for providing uniform color distribution of light emitted from a light source to an eye box in a near eye display (NED). An example of the system and method uses an optical element including two or more waveguides optimized to different colors of the visible light spectrum. The optical element further includes one or more polarization state generators for controlling the polarization of light incident on the waveguides to facilitate coupling of light into a matched waveguide, and to impede coupling of light into unmatched waveguides.

Abstract: An optical fiber connector includes a fixing module for gripping an optical fiber, an inner housing sleeved on the fixing module; and an outer housing sleeved on the inner housing. The fixing module includes a support member, a fastening member mating with the support member, and a locking member sleeved on the support member. The locking member forms at least one pair of gripping portions at outer surfaces of the locking member. The inner housing defines a pair of sliding grooves in a side wall thereof. The outer housing defines a pair of operating grooves communicating with the pair of sliding grooves correspondingly. The locking member is capable of sliding along the support member to grip or unlock the optical fiber driven by an assembly tool engaging with the pair of gripping portions through the pair of sliding grooves and the pair of operating grooves.

Abstract: There are provided optical fiber configurations that provide for the delivery of laser energy, and in particular, the transmission and delivery of high power laser energy over great distances. These configurations further are hardened to protect the optical fibers from the stresses and conditions of an intended application. The configurations provide means for determining the additional fiber length (AFL) need to obtain the benefits of such additional fiber, while avoiding bending losses.

Abstract: A wavelength selective switch according to the present invention includes at least one input port for inputting wavelength-multiplexed light, a dispersive element which receives the light from the input port, and disperses the received light, a light converging element which converges dispersed light which has been dispersed for each wavelength, a light deflecting member having a plurality of reflecting optical elements which are capable of independently deflecting each dispersed light from the light converging element, and at least one output port which receives light which has been deflected by the light deflecting member. An area having a reflectivity higher than a central area of the reflecting surface is formed in at least a part of an end portion of the reflecting surface in the dispersive direction by the dispersive element.

Abstract: Various embodiments include large cores fibers that can propagate few modes or a single mode while introducing loss to higher order modes. Some of these fibers are holey fibers that comprising cladding features such as air-holes. Additional embodiments described herein include holey rods. The rods and fibers may be used in many optical systems including optical amplification systems, lasers, short pulse generators, Q-switched lasers, etc. and may be used for example for micromachining.

Abstract: An image forming apparatus includes a sheet feed conveying unit having an outlet for a recording medium on one side; at least one image forming unit having an inlet for the recording medium on one side and an outlet for the recording medium on the other side; and a sheet eject conveying unit having an inlet for the recording medium on one side, wherein the sheet feed conveying unit, the image forming unit, and the sheet eject conveying unit are arranged along a conveying direction of the recording medium; the outlet of the sheet feed conveying unit matches the inlet of the image forming unit; the outlet of the image forming unit matches the inlet of the sheet eject conveying unit; and the sheet feed conveying unit, the image forming unit, and the sheet eject conveying unit are connected to each other in a separable manner.

Abstract: An optical fiber multi-wavelength filter based on a polarization-diversity loop configuration within which polarization-maintaining fibers are contained with some optical elements is disclosed. The filter includes a coil heater adjacent to polarization-maintaining fibers. An ambient temperature of the polarization-maintaining fiber is controlled by adjusting a current applied to the coil heater.

Abstract: A multimode optical fiber includes a central core having a radius (r1) and an alpha-index profile. The multimode optical fiber further includes a depressed trench, which surrounds the central core, that has a width (wt) and a refractive index difference (?nt) with an outer optical cladding. Typically, the central core's diameter is between about 47 and 53 microns, and the depressed trench's width (wt) is between 0.5 micron and 2 microns. The depressed trench's refractive index difference (?nt) with the outer optical cladding is typically between ?4×10?3 and ?1×10?3.

Abstract: An optical apparatus comprises: source, primary, and secondary waveguides formed in waveguide layers on a substrate; a light source; and an optical waveguide tap. The light source launches a source optical signal along the source waveguide. The tap divides the source optical signal into a primary optical signal in the primary waveguide and a secondary optical signal in the secondary waveguide. The secondary optical signal emerges from the secondary waveguide to exit the waveguide layers at the substrate edge or to propagate within the waveguide layers as a stray optical signal without confinement by any waveguide. The stray optical signal propagates thusly unconfined into the open mouth of an optical trap that comprises one or more lateral surfaces formed in the waveguide layers and an opaque coating on the lateral surfaces, and comprises a spiral region of the optical waveguide layers with an open mouth and closed end.

Abstract: A photo-electric integrated circuit device comprises an on-die optical input/output device. The on-die optical input/output device comprises a substrate having a trench, a lower cladding layer disposed in the trench and having an upper surface lower than an upper surface of the substrate, and a core disposed on the lower cladding layer at a distance from sidewalls of the trench and having an upper surface at substantially the same level as the upper surface of the substrate.

Abstract: An optical waveguide forming epoxy resin composition is free from a diluent component irrelevant to a curing reaction, and comprises: (A) a liquid epoxy resin; and (B) a photoacid generator; wherein the liquid epoxy resin (A) comprises a liquid epoxy resin represented by the following general formula (1) in a proportion of 40 to 75 wt % based on the overall amount of a resin component: wherein R1 and R2 are each a hydrogen atom or a methyl group; R3 to R6 are each a hydrogen atom, a methyl group, a chlorine atom or a bromine atom; X is a C2 to C15 alkylene group, an ethyleneoxy group, a di(ethyleneoxy) group, a tri(ethyleneoxy) group, a propyleneoxy group, a propyleneoxypropyl group, a di(propyleneoxy)propyl group or a tri(propyleneoxy)propyl group; and n is a natural number and has an average value of 1.2 to 5.