Abstract: High accuracy positioning relative to an absolute reference position (guide pin holes in ferrules, etc.) is provided for a plurality of cores constituting a polymer waveguide array for connection to ferrules at ends of a plurality of these assemblies to form a single-mode polymer waveguide array assembly. A method for forming a single-mode polymer waveguide array assembly enables a plurality of cores constituting a polymer waveguide array to be positioned with high accuracy. Also provided is a combination of process molds (an initial process mold and intermediate process mold) used in the processes unique to the present methods.

Abstract: High accuracy positioning relative to an absolute reference position (guide pin holes in ferrules, etc.) is provided for a plurality of cores constituting a polymer waveguide array for connection to ferrules at ends of a plurality of these assemblies to form a single-mode polymer waveguide array assembly. A method for forming a single-mode polymer waveguide array assembly enables a plurality of cores constituting a polymer waveguide array to be positioned with high accuracy. Also provided is a combination of process molds (an initial process mold and intermediate process mold) used in the processes unique to the present methods.

Abstract: High accuracy positioning relative to an absolute reference position (guide pin holes in ferrules, etc.) is provided for a plurality of cores constituting a polymer waveguide array for connection to ferrules at ends of a plurality of these assemblies to form a single-mode polymer waveguide array assembly. A method for forming a single-mode polymer waveguide array assembly enables a plurality of cores constituting a polymer waveguide array to be positioned with high accuracy. Also provided is a combination of process molds (an initial process mold and intermediate process mold) used in the processes unique to the present methods.

Abstract: Embodiments of the present invention provide optical modules which input and output wavelength multiplexed optical signals to and from an optical waveguide, and a manufacturing method thereof. In one embodiment, an optical module comprises light emitting and light receiving element pairs that are positioned on grooves of one or more optical waveguides, where each light emitting and light receiving element pair corresponds to a different wavelength of light. Each light emitting and light receiving element pair includes an optical pin comprising an inclined surface and a light selecting filter that are configured to reflect light of a corresponding wavelength from an optical waveguide to the light receiving element, and from the light emitting element to the optical waveguide.

Abstract: An optical device and a method of manufacturing an optical device. The optical device includes: a conversion means for converting propagation light propagating through an optical waveguide into parallel light and for outputting the parallel light; and a first lens means for focusing the parallel light outputted from the conversion means on a core of an optical fiber. The method includes: converting propagation light propagating through an optical waveguide into parallel light; outputting the parallel light; and focusing, using a first lens, the parallel light on a core of an optical fiber.

Abstract: An optical module includes: at least one optical waveguide provided on a surface of a substrate; a plurality of grooves provided in the optical waveguide on the surface of the substrate and having both a surface orthogonal to the surface of the substrate and an inclined surface; multiple pairs of light-emitting and light-receiving elements aligned with the plurality of grooves in the optical waveguide and provided so as to correspond to light of different wavelengths on the optical waveguide; and a plurality of light-selecting filters each provided on an inclined surface of the plurality of grooves in the optical waveguide and reflecting light of the wavelength corresponding to the light-emitting element in the respective pair of light-emitting and light-receiving elements towards the optical waveguide, and selectively reflecting light of the corresponding wavelength from the light propagating through the optical waveguide towards the corresponding pair of light-emitting and light-receiving elements.

Abstract: A core intersection in an optical waveguide formed of a plurality of cores and a clad that surrounds the cores is disclosed, the structure characterized in that the same material as that of the cores is added to two planes, upper and lower planes, of each of core intersection spaces where the plurality of cores intersect (instead of using a clad material). The structure of a core intersection in an optical waveguide formed of a plurality of cores and a clad is disclosed, the structure characterized in that four planes that divide (isolate) each of core intersection spaces where the plurality of cores intersect, that is, four discontinuity spaces between the core intersection space and the cores connected thereto, are filled with the same material as that of the clad (instead of using a core material so that the core intersection space is seamlessly connected to surrounding core intersection spaces).

Abstract: An optical device and a method of manufacturing an optical device. The optical device includes: a conversion means for converting propagation light propagating through an optical waveguide into parallel light and for outputting the parallel light; and a first lens means for focusing the parallel light outputted from the conversion means on a core of an optical fiber. The method includes: converting propagation light propagating through an optical waveguide into parallel light; outputting the parallel light; and focusing, using a first lens, the parallel light on a core of an optical fiber.

Abstract: An optical device including a diffraction grating structure. The device provides optical coupling that allows the diffraction efficiency and the coupling efficiency of signal light whose direction to travel is changed (or diffracted) by a grating to be independently determined. The optical device includes: a first layer forming one end of an optical waveguide; and a second layer disposed on the first layer and having a lower refractive index than the first layer. According to one embodiment, the second layer includes a diffraction grating structure that diffracts light that has entered the second layer from the first layer and outputs the light from the second layer to the first layer. In another embodiment, a third layer disposed on the second layer and includes the diffraction grating structure.

Abstract: A method of forming liquid crystal cell for a color display device includes forming a liquid crystal layer and a prism structure between top and bottom substrates. Forming the prism structure includes forming a lens shaped die, coating a low refractive index resin on the lens shaped die, pasting the lens shaped die to the top substrate, and irradiating the coated low refractive index resin so as to set the low refractive index resin and form a low refractive index layer. The lens shaped die is removed from the low refractive index layer, a high refractive index resin is coated on the low refractive index layer by use of a planarizing die. The coated high refractive index resin is irradiated so as to set the high refractive index resin and form a high refractive index layer, and the planarizing die is removed from the high refractive index layer.

Abstract: A method of forming an optical element for a color display device includes forming a lens shaped die, coating a low refractive index photo-setting resin on the lens shaped die, pasting the lens shaped die to a substrate, and irradiating the coated low refractive index photo-setting resin so as to set the low refractive index resin and form a low refractive index layer. The lens shaped die is removed from the low refractive index layer set on the substrate, a high refractive index photo-setting resin is coated on the low refractive index layer by use of a planarizing die, and the coated high refractive index photo-setting resin is irradiated so as to set the high refractive index resin and form a high refractive index layer. The planarizing die is then from the high refractive index layer set on the low refractive index layer.

Abstract: A method for fabricating, and a structure embodying, a single-mode polymer wave guide array aligned with a polymer waveguide array through adiabatic coupling. The present invention provides a structure having a combination of (i) a stub fabricated on a polymer and (ii) a groove fabricated on a silicon (Si) chip, with which an adiabatic coupling can be realized by aligning (a) a (single-mode) polymer waveguide (PWG) array fabricated on the polymer with (b) a silicon waveguide (SiWG) array fabricated on the silicon chip; wherein, the stub fabricated on the polymer is patterned according to a nano-imprint process, along with the PWG array, in a direction in which the PWG array is fabricated, and the groove fabricated on the silicon chip is fabricated along a direction in which the SiWG array is fabricated.

Abstract: High accuracy positioning relative to an absolute reference position (guide pin holes in ferrules, etc.) is provided for a plurality of cores constituting a polymer waveguide array for connection to ferrules at ends of a plurality of these assemblies to form a single-mode polymer waveguide array assembly. A method for forming a single-mode polymer waveguide array assembly enables a plurality of cores constituting a polymer waveguide array to be positioned with high accuracy. Also provided is a combination of process molds (an initial process mold and intermediate process mold) used in the processes unique to the present methods.

Abstract: High accuracy positioning relative to an absolute reference position (guide pin holes in ferrules, etc.) is provided for a plurality of cores constituting a polymer waveguide array for connection to ferrules at ends of a plurality of these assemblies to form a single-mode polymer waveguide array assembly. A method for forming a single-mode polymer waveguide array assembly enables a plurality of cores constituting a polymer waveguide array to be positioned with high accuracy. Also provided is a combination of process molds (an initial process mold and intermediate process mold) used in the processes unique to the present methods.

Abstract: A fiber to wafer interface system includes an interface device comprising a flexible substrate portion, a flexible cladding portion arranged on the substrate portion, a flexible single-mode waveguide portion arranged on the cladding portion including a substantially optically transparent material, a connector portion engaging a first distal end of the flexible substrate portion, the connector portion operative to engage a portion of an optical fiber ferrule, a wafer portion comprising a single mode waveguide portion arranged on a portion of the wafer, an adhesive disposed between a portion of the single mode waveguide portion of the body portion and the single mode waveguide portion of the wafer portion, the adhesive securing the body portion to the wafer portion.

Abstract: A fiber to wafer interface system includes an interface device comprising a flexible substrate portion, a flexible cladding portion arranged on the substrate portion, a flexible single-mode waveguide portion arranged on the cladding portion including a substantially optically transparent material, a connector portion engaging a first distal end of the flexible substrate portion, the connector portion operative to engage a portion of an optical fiber ferrule, a wafer portion comprising a single mode waveguide portion arranged on a portion of the wafer, an adhesive disposed between a portion of the single mode waveguide portion of the body portion and the single mode waveguide portion of the wafer portion, the adhesive securing the body portion to the wafer portion.

Abstract: An interface device includes a flexible substrate portion, a flexible cladding portion arranged on the substrate portion, a flexible single-mode waveguide portion arranged on the cladding portion including a substantially optically transparent material, a first engagement feature operative to engage a portion of a wafer, and a connector portion engaging a first distal end of the flexible substrate portion, the connector portion operative to engage a portion of an optical fiber ferrule.

Abstract: An optical coupling structure that interfaces between optical devices mounted on a substrate and optical waveguides formed in the substrate. A manufacturing method includes preparing a wafer formed on an inorganic solid material on a dicing tape and cutting the back surface of the wafer to form substantially angled portions using a dicing blade having a point angle. The dicing tape is stripped from the wafer and the wafer is separated at the valleys between the substantially angled portions to obtain an optical coupling element. The obtained optical coupling element is a three-dimensional polyhedral light-reflecting member having a mirror surface corresponding to a surface of the wafer. The obtained optical coupling element is inserted into a trench that opens, substantially perpendicular to an optical waveguide of an optical transmission substrate, in the main surface of the optical transmission substrate to provide a structure for optical coupling with the outside.

Abstract: An interface device includes a flexible substrate portion, a flexible cladding portion arranged on the substrate portion, a flexible single-mode waveguide portion arranged on the cladding portion including a substantially optically transparent material, a first engagement feature operative to engage a portion of a wafer, and a connector portion engaging a first distal end of the flexible substrate portion, the connector portion operative to engage a portion of an optical fiber ferrule.

Abstract: An optical coupling structure that interfaces between optical devices mounted on a substrate and optical waveguides formed in the substrate. A manufacturing method includes preparing a wafer formed on an inorganic solid material on a dicing tape and cutting the back surface of the wafer to form substantially angled portions using a dicing blade having a point angle. The dicing tape is stripped from the wafer and the wafer is separated at the valleys between the substantially angled portions to obtain an optical coupling element. The obtained optical coupling element is a three-dimensional polyhedral light-reflecting member having a mirror surface corresponding to a surface of the wafer. The obtained optical coupling element is inserted into a trench that opens, substantially perpendicular to an optical waveguide of an optical transmission substrate, in the main surface of the optical transmission substrate to provide a structure for optical coupling with the outside.