Abstract: An embodiment optical connecting structure is an optical connecting structure in a package structure connected to an optical fiber and including a first electric wiring board and a second electric wiring board facing the first electric wiring board. The optical connecting structure includes an optical element arranged on either the first electric wiring board or the second electric wiring board and a GRIN lens arranged on a surface of the second electric wiring board facing the first electric wiring board, in which one end surface of the GRIN lens faces an end surface of the optical element.

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: Optical alignment between an optical waveguide device and an optical connection part is realized easily and at low cost. An optical circuit in which optical waveguides to be connected to optical fibers are formed includes: an alignment optical waveguide configured to be opposed to, on an optical waveguide edge face to which an optical connection part having guide holes for insertion of core wires of the optical fibers is to be fixed, a guide hole into which an alignment optical fiber is to be inserted; and a light path changing member configured to change a path of light to a vertical direction with respect to the optical axis direction of the core of the alignment optical waveguide.

Abstract: An optical connection structure includes a first focus lens arranged between a first light incidence/emission end and an optical element, and a second focus lens arranged between a second light incidence/emission end and the optical element. The first focus lens and the second focus lens are arranged on an optical axis connecting the first light incidence/emission end and the second light incidence/emission end.

Abstract: An embodiment optical body is provided in a propagation path of light between a Si waveguide and an optical fiber. The optical body changes a course of some of radiation mode light, which is emitted from the Si waveguide and propagates in a direction away from an optical axis thereof, to obtain waveguide mode light passing through itself. Thus, the amount of waveguide mode light incident on the optical fiber increases, and the coupling efficiency between the Si waveguide and the optical fiber is improved.

Abstract: An optical connection structure 1 includes a waveguide substrate; a Si waveguide formed on one surface of the waveguide substrate and having a first end surface; an optical fiber having a second end surface facing the first end surface; a terrace section extending further toward the optical fiber side from an end portion on the optical fiber side of the waveguide substrate; and a lens disposed on the terrace section, and arranged on an optical axis connecting the first end surface and the second end surface.

Abstract: A photoelectric fiber includes a fiber including a core through which light is guided; an electrical unit formed continuously with the fiber, the electrical unit being configured to house a photoelectric conversion chip including a photoelectric conversion element; and an external electrode formed on a front surface of at least one of the fiber or the electrical unit, wherein the photoelectric conversion chip is optically connected to the core and electrically connected to the external electrode.

Abstract: There is provided an optical connection structure in which an optical fiber and an optical semiconductor waveguide are easily connected with low loss. The present invention relates to an optical connection structure configured to connect an optical waveguide device and an optical fiber including cores having different refractive indexes, wherein an optical connection component using a planar lightwave circuit is bonded and fixed on an end surface of an input/output waveguide of the optical waveguide device, a value of a refractive index of a core of the planar lightwave circuit is between a value of the refractive index of the core of the optical waveguide device and a value of the refractive index of the core of the optical fiber, and the optical waveguide device and the optical fiber are optically connected via the planar lightwave circuit.

Abstract: An embodiment mounting structure of an optical module includes, in order, a plurality of optical modules, a first optical waveguide component, a first optical connector, a second optical connector, and a second optical waveguide component, in which the first optical connector includes a first magnetic component and accommodates the first optical waveguide component optically connected to the optical modules, the second optical connector includes a second magnetic component and accommodates the second optical waveguide component, and at least one of the first magnetic component or the second magnetic component includes a hard magnetic material, and by causing a magnetic force to act between the first magnetic component and the second magnetic component, an attractive force is applied in a direction in which a gap between facing end surfaces of the first magnetic component and the second magnetic component decreases.

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 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 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 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.