Abstract: An optical connection structure includes an optical waveguide device that includes a substrate, a BOX layer, a first waveguide, and an overcladding in this order, an optical fiber disposed in a V-groove formed in the substrate, a self-forming waveguide disposed between an end face of the optical waveguide device and an end face of the optical fiber, and a cladding disposed around the self-forming waveguide. The optical fiber is positioned so that the end face of the optical fiber faces the end face of the optical waveguide device to cause signal light emitted from the optical fiber to enter the waveguide. The self-forming waveguide is formed with a portion cured by irradiation with resin curing light.

Abstract: An optical connector of the present invention includes a ferrule accommodating optical fibers, a flange integrated with the ferrule, a sleeve in which a pair of the ferrules are accommodated, and a connection component which is provided around the sleeve and includes a magnet or a metallic magnetic material, wherein at least one of the connection component and the flange includes a magnet, and an attractive force acts on the connection component and the flanges, whereby cores of the opposing optical fibers come into close contact with each other. As a result, the optical connector of the present invention can provide the present physical contact connection and can provide a smaller optical connector.

Abstract: An embodiment optical connector includes a fiber having a core through which light is guided and a magnet attached to one end of the fiber, and the magnet has an opening that exposes at least the end face of the core. An embodiment optical connection structure includes a first optical connector and a second optical connector, each including a fiber having a core through which light is guided and a magnet attached to one end of the fiber, wherein the magnets are magnetized so as to exert attraction on each other, and when the first optical connector and the second optical connector are mechanically connected by magnetic forces, the core of the first optical connector and the core of the second optical connector are optically connected through the opening of the magnet of the first optical connector and the opening of the magnet of the second optical connector.

Abstract: A module includes an electrical wiring layer, an optical wiring layer, an electrical element, and an optical element. The electrical wiring layer includes electrical wiring lines for propagating electrical signals. The optical wiring layer includes optical wiring lines that are formed over the electrical wiring layer and are designed for propagating optical signals. The electrical element is formed on the electrical wiring layer and is electrically connected to the electrical wiring lines. The optical element is formed on the optical wiring layer and is optically connected to the optical wiring lines.

Abstract: A wavelength checker includes an optical converter composed of a conversion material that converts infrared light into visible light. The optical converter is disposed, on an output side (side from which light is output to an external space) of a plurality of first output waveguides of an optical waveguide chip, to receive emitted light that is guided through the first output waveguides and reflected on and emitted from the light emitting-side end surface. The light emitting-side end surface is a reflection surface that is inclined to face a main substrate.

Abstract: A waveguide connection structure consists of a waveguide chip having a waveguide, and a connector having a groove dug in a thickness direction, the waveguide chip and the connector each having a concave-convex portion that fit into each other in a state of being adjacent to each other on the same plane.

Abstract: A wavelength checker includes an optical waveguide chip. A known arrayed-waveguide diffraction grating is formed on the optical waveguide chip. The wavelength checker includes a light conversion unit made of a conversion material that converts infrared light into visible light. The light conversion unit is arranged on an output side of a plurality of first output waveguides of the optical waveguide chip to be capable of receiving light emitted from the plurality of first output waveguides. The light conversion unit is formed on a side surface of a support facing an output end surface of the optical waveguide chip. The support is fixed to a main board.

Abstract: A bonding wire includes a hollow member made of an insulator and mounted such as to bridge ICs formed with interconnects, such that a plurality of open ends is each closed by abutting on a surface of the interconnect that is a connection target, and a connection member made of a conductor, filling inside of the hollow member such as to bond to the surface of the interconnect at a location where the hollow member abuts on the surface of the interconnect.

Abstract: An optical connection element includes a first waveguide core and a second waveguide core above a substrate or a cladding and in which signal light and resin curing light propagate through the first waveguide core and the second waveguide core, the optical connection element including: an inter-core light coupling section in which a part of the first waveguide core and a part of the second waveguide core overlap in a perpendicular direction; and a resin curing light coupling section that couples resin curing light to the second waveguide core.

Abstract: An embodiment is an optical connection element including a first waveguide core and a second waveguide core on a substrate, the first waveguide core and the second waveguide core configured to propagate a signal light and a resin-curing light, and a mode field conversion portion provided at one end of the first waveguide core, wherein the second waveguide core covers at least the mode field conversion portion on the substrate, and a refractive index of the first waveguide core is higher than a refractive index of the second waveguide core.

Abstract: An optical connecting component is an optical connecting component to be connected to another optical connecting component, which includes an optical waveguide component, an alignment component for fixing the optical waveguide component, and a magnetic structure integrated with the alignment component. A positioning structure is provided on a connecting end face of the alignment component, in which the positioning structure determines a relative position between the connecting end face and a connecting end face of an alignment component provided in the other optical connecting component.

Abstract: A light conversion portion includes a conversion material that converts infrared light to visible light. A reflection portion is fixed to a position on a main substrate at which the reflection portion faces an output end of an optical waveguide chip on the side from which light is output to an external space. The reflection portion includes a reflection surface that faces the output end and is inclined with respect to a plane of the main substrate such that a reflection direction is toward the upper side of the main substrate. The reflection surface reflects near infrared light.

Abstract: A light conversion portion is constituted by a conversion material that converts infrared light to visible light. A reflection portion is fixed to a position on a main substrate at which the reflection portion faces an output end of an optical waveguide chip on the side from which light is output to an external space. The reflection portion includes a reflection surface that faces the output end and is inclined with respect to a plane of the main substrate such that a reflection direction is toward the upper side of the main substrate. The reflection surface reflects near infrared light.

Abstract: An optical connector of the present invention includes a ferrule accommodating optical fibers, a flange integrated with the ferrule, a sleeve in which a pair of the ferrules are accommodated, and a connection component which is provided around the sleeve and includes a magnet or a metallic magnetic material, wherein at least one of the connection component and the flange includes a magnet, and an attractive force acts on the connection component and the flanges, whereby cores of the opposing optical fibers come into close contact with each other. As a result, the optical connector of the present invention can provide the present physical contact connection and can provide a smaller optical connector.

Abstract: A first optical waveguide layer and a second optical waveguide layer are optically connected by a resin optical waveguide composed of a resin core composed of a light-transmitting resin and a cladding composed of air surrounding the resin core. A hollow outer wall structure that houses the resin optical waveguide is provided. An enclosed space is provided inside the outer wall structure. The outer wall structure is disposed to bridge the gap between the first optical device and the second optical device.

Abstract: An optical element that is optically coupled to light inlet/outlet ends of an optical fiber is disposed on a base placed near the light inlet/outlet ends of the optical fiber. Moreover, a rod-like reinforcing member has an integral structure fixed into a first hole formed in the optical fiber and a second hole formed in the base 102.

Abstract: A connection structure of optical waveguide chips includes a base substrate (2003) in which grooves (2013) are formed, spacer optical fibers (2006) each disposed for a corresponding one of the grooves (2013) and fitted in the groove (2013) while partially projecting from the base substrate (2003), and silica-based PLCs (2001, 2002) that are a plurality of optical waveguide chips in each of which grooves (2007) fitted on the projecting portions of the spacer optical fibers (2006) are formed at positions of an optical waveguide layer (2008) facing the grooves (2013), and each of which is mounted on the base substrate (2003) while being supported by the spacer optical fibers (2006). The silica-based PLCs (2001, 2002) are mounted on the base substrate (2003) such that incident/exit end faces of the optical waveguide layers (2008) face each other.

Abstract: An optical connection structure includes a PLC that is an optical waveguide chip including an optical waveguide and at least one groove formed on a substrate, and at least one optical fiber that is fitted into the at least one groove of the PLC. The PLC includes the optical waveguide, at least one grating coupler that is optically connected to the optical waveguide, and the at least one groove formed at a position in a vicinity of the at least one grating coupler in a cladding layer in which the optical waveguide is formed. An optical fiber of the at least one optical fiber is fitted into a groove of the at least one groove such that an end surface of the optical fiber is located in a vicinity of a grating coupler of the at least one grating coupler, the optical fiber being optically connected to the grating coupler.

Abstract: There is provided an optical element mounted on a substrate and an optical coupling element mounted on the substrate. The optical coupling element includes a guide unit extending in a direction parallel to a plane of the substrate so as to fix an optical fiber. There is provided a mold resin layer formed on the substrate so as to cover the optical element and expose a side surface of the optical coupling element at one end of the guide unit. The optical element includes a light incidence/emission unit on a side surface perpendicular to the plane of the substrate, and the other end of the guide unit and the light incidence/emission unit are disposed to face each other.

Abstract: A first adhesive layer is provided to be in contact with an SSC. A second adhesive layer is provided to be in contact with an optical fiber. A lens structure is on an interface between the first adhesive layer and the second adhesive layer.