Abstract: This optical connector includes a ferrule, a plug frame, and an elastic member. The ferrule holds a glass fiber of an optical fiber. The plug frame receives the ferrule. The elastic member holds, with a first length, the ferrule in a first position in the plug frame, or holds, with a second length shorter than the first length, the ferrule in a second position in the plug frame. When the ferrule is in the first position, the ferrule and the plug frame are in contact with each other via the tapered surface, and the pivotal movement of the ferrule to the plug frame is restricted. When the ferrule is in the second position, the ferrule is not in contact with the plug frame and is pivotable to the plug frame, and the ferrule is in a floating state.

Abstract: A method for manufacturing an optical fiber splicing component includes preparing a plurality of optical fibers each including a glass fiber including a core and a cladding covering the core, and a resin coating covering the glass fiber, an end portion of the glass fiber being exposed from the resin coating, mounting the plurality of glass fibers on an optical fiber holding member so that the plurality of glass fibers exposed from the resin coating are arranged in a first direction and protrude outward from the optical fiber holding member, adjusting and fixing postures of the plurality of glass fibers around respective central axes, and collectively bonding two or more glass fibers among the plurality of glass fibers and the optical fiber holding member with an adhesive.

Abstract: An optical connector includes an optical fiber that includes a glass fiber and a resin coating portion, a ferrule that includes a ferrule main body holding the glass fiber and a flange portion fixed to the ferrule main body, a housing that accommodates the ferrule and includes an inner wall surface facing the ferrule, and an elastic member that is accommodated in the housing and applies an elastic force to the ferrule in a longitudinal direction of the housing. The housing is configured to have a space between the inner wall surface and the flange portion, and the housing is configured such that at least a part of the housing including the inner wall surface is deformed in a state where the housing is engaged with the adaptor, and the inner wall surface prevents rotation of the flange portion with respect to the housing.

Abstract: A method for estimating an orientation around a central axis of an optical fiber includes radiating light from a light source toward a side surface of the optical fiber, capturing an image of the side surface of the optical fiber by receiving the light transmitted through the optical fiber at a plurality of pixels disposed along a direction intersecting the central axis of the optical fiber, generating a luminance profile for the optical fiber based on a luminance value of light received by the plurality of pixels, and estimating an orientation around the central axis of the optical fiber using the luminance profile.

Abstract: An optical-fiber holding component disposed in a ferrule holding a plurality of optical fibers, which respectively have at least one core in a region shifted from a region on a center axis and are arranged in a first direction intersecting with the center axis line, is disclosed. The optical-fiber holding component comprises a holding part defining a position of each of coating removed portions in a plane perpendicular to the center axis and holding the coating removed portions, each of the coating removed portions being obtained by removing a resin coating by a predetermined length from a tip end of each of the optical fibers; and a fixing part arranged side by side with the holding part in a second direction along the center axis, resin coated portions of the optical fibers being fixed to the fixing part.

Abstract: An optical fiber ribbon includes a plurality of optical fibers each including a glass fiber including a core and a cladding covering the core, and a resin coating covering the glass fiber, the plurality of optical fibers being arranged in parallel. In the optical fiber ribbon, a distance between central axes of adjacent optical fibers among the plurality of optical fibers in a direction orthogonal to a longitudinal direction of the plurality of optical fibers is larger than an outer diameter of each of the plurality of optical fibers.

Abstract: A method for manufacturing an optical fiber connecter includes preparing optical fiber including a glass fiber and a resin coating portion covering the glass fiber, mounting the optical fiber on a first optical fiber holder, adjusting an azimuth around a central axis for the optical fiber, bonding the glass fiber to the first optical fiber holder, mounting the glass fiber on a second optical fiber holder, bonding the glass fiber to the second optical fiber holder, and grinding end faces of the glass fiber and an the second optical fiber holder so that the end face of the glass fiber is flush with the end face of the second optical fiber holder.

Abstract: A manufacturing method for manufacturing a multi-fiber connector, including: shaping a part of each of a plurality of optical fibers such that a part of an outer peripheral surface of a glass fiber including one end portion becomes a flat surface; arranging each of the plurality of optical fibers in a positioning component such that the entire flat surface protrudes from the positioning component; rotationally aligning each of the plurality of optical fibers such that the flat surface comes into contact with a reference surface of a jig; fixing each of the plurality of optical fibers to the positioning component; and cutting and removing a part of the glass fiber which protrudes from the positioning component and includes the flat surface and grinding a cut surface of each of the plurality of optical fibers which is exposed from the positioning component.

Abstract: An optical wiring component includes an optical waveguide component that has a first end surface and a second end surface and includes a plurality of optical waveguides extending from the first end surface to the second end surface, an angle formed by a plane including the first end surface and a plane including the second end surface being 70° or more, a plurality of optical fibers that have a first end and a second end, one or more first optical connectors that are mounted on the first end and fixed to the optical waveguide component at the first end surface by an adhesive agent, and one or more second optical connectors that are mounted on the second end.

Abstract: A manufacturing method for manufacturing a multi-fiber connector, including: shaping a part of each of a plurality of optical fibers such that a part of an outer peripheral surface of a glass fiber including one end portion becomes a flat surface; arranging each of the plurality of optical fibers in a positioning component such that the entire flat surface protrudes from the positioning component; rotationally aligning each of the plurality of optical fibers such that the flat surface comes into contact with a reference surface of a jig; fixing each of the plurality of optical fibers to the positioning component; and cutting and removing a part of the glass fiber which protrudes from the positioning component and includes the flat surface and grinding a cut surface of each of the plurality of optical fibers which is exposed from the positioning component.

Abstract: This optical connector includes a ferrule, a plug frame, and an elastic member. The ferrule holds a glass fiber of an optical fiber. The plug frame receives the ferrule. The elastic member holds, with a first length, the ferrule in a first position in the plug frame, or holds, with a second length shorter than the first length, the ferrule in a second position in the plug frame. When the ferrule is in the first position, the ferrule and the plug frame are in contact with each other via the tapered surface, and the pivotal movement of the ferrule to the plug frame is restricted. When the ferrule is in the second position, the ferrule is not in contact with the plug frame and is pivotable to the plug frame, and the ferrule is in a floating state.

Abstract: An optical-fiber holding component disposed in a ferrule holding a plurality of optical fibers, which respectively have at least one core in a region shifted from a region on a center axis and are arranged in a first direction intersecting with the center axis line, is disclosed. The optical-fiber holding component comprises a holding part defining a position of each of coating removed portions in a plane perpendicular to the center axis and holding the coating removed portions, each of the coating removed portions being obtained by removing a resin coating by a predetermined length from a tip end of each of the optical fibers; and a fixing part arranged side by side with the holding part in a second direction along the center axis, resin coated portions of the optical fibers being fixed to the fixing part.

Abstract: An optical connector includes: an optical waveguide substrate including a plurality of core regions and a cladding layer covering the plurality of core regions; a first ferrule including a first housing portion that houses the optical waveguide substrate; a second ferrule facing the first ferrule and including a second housing portion that houses a multi-core optical fiber including a plurality of first cores and a first cladding covering the plurality of first cores; and a first positioning mechanism configured to determine a position of the second ferrule with respect to the first ferrule and fix the first ferrule and the second ferrule to each other such that the first ferrule and the second ferrule are separable from each other. The second ferrule is disposed such that each of the plurality of core regions is optically connected to a corresponding one of the plurality of first cores via a gap.

Abstract: A method for manufacturing an optical connecting component includes the steps of inserting an optical fiber into one through hole of a plurality of through holes of a connector, rotating the optical fiber around an axis of the optical fiber in the one through hole and aligning and holding the optical fiber at a predetermined position, blocking the end part of a through hole adjacent to the one through hole into which the optical fiber is inserted with a jig on an end face of the connector provided with the plurality of through holes, and fixing the optical fiber to the connector in a state in which the end part of the adjacent through hole is blocked.

Abstract: The present embodiment relates to an optical connector capable of reducing a pressing force applied to each of a plurality of optical fibers simultaneously held by a ferrule and effectively reducing fiber damage. The optical connector includes a ferrule including a plurality of through holes and a plurality of optical fibers held by the ferrule with end faces of the optical fibers protruding from the ferrule. The maximum curvature of the end face of each of the optical fibers and a variation amount of a protrusion amount of each of the optical fibers are adjusted to enable excellent many-to-many PC connection.

Abstract: An optical connector that requires fewer components and also has a simpler structure includes an optical fiber including a glass fiber and a resin coating surrounding the glass fiber; a ferrule having a flange outside the ferrule and a through-hole inside the ferrule, the ferrule holding, in the through-hole, a portion of the glass fiber exposed from the resin coating at an end of the optical fiber; a plug frame accommodating the ferrule; and an elastic member abutting the flange and biasing the ferrule. The flange has a flat surface on an outer periphery thereof, and the plug frame has a guide surface configured to unrotatably align the ferrule biased by the elastic member in contact with the flat surface of the flange. When the ferrule is moved in the direction opposite to the biasing direction, the flat surface is separated from the guide surface to bring the ferrule into a floating state relative to the plug frame.

Abstract: The present embodiment relates to an optical connector capable of reducing a pressing force applied to each of a plurality of optical fibers simultaneously held by a ferrule and effectively reducing fiber damage. The optical connector includes a ferrule including a plurality of through holes and a plurality of optical fibers held by the ferrule with end faces of the optical fibers protruding from the ferrule. The maximum curvature of the end face of each of the optical fibers and a variation amount of a protrusion amount of each of the optical fibers are adjusted to enable excellent many-to-many PC connection.

Abstract: An optical connector includes: an optical fiber including a glass fiber and a resin coating that covers the glass fiber, an end portion of the glass fiber being exposed from the resin coating; a ferrule including a through hole and holding the optical fiber in a state where the end portion of the glass fiber exposed from the resin coating is inserted into the through hole; a thermosetting resin provided between an inner wall of the through hole and the glass fiber, the thermosetting resin adhering the glass fiber and the ferrule to each other; and an ultraviolet curable resin provided in a range which is between the inner wall of the through hole and the glass fiber and includes a tip of the ferrule, the ultraviolet curable resin adhering the glass fiber and the ferrule to each other.

Abstract: Provided is a method for manufacturing an optical connector. The optical connector includes: an optical fiber including a glass fiber and a resin coating; and a ferrule including a through hole. The method for manufacturing includes: coating an inner wall of the through hole with a thermosetting resin; inserting the glass fiber exposed from the resin coating into the through hole; adjusting a mutual positional relationship between the optical fiber and the ferrule so that a distance between end surfaces of a tip of the glass fiber and a tip of the ferrule is equal to or less than 1 mm; rotationally aligning the glass fiber with respect to the ferrule; curing the thermosetting resin; and polishing the tip of the glass fiber and the tip of the ferrule.

Abstract: An optical connector includes: an optical waveguide substrate including a plurality of core regions and a cladding layer covering the plurality of core regions; a first ferrule including a first housing portion that houses the optical waveguide substrate; a second ferrule facing the first ferrule and including a second housing portion that houses a multi-core optical fiber including a plurality of first cores and a first cladding covering the plurality of first cores; and a first positioning mechanism configured to determine a position of the second ferrule with respect to the first ferrule and fix the first ferrule and the second ferrule to each other such that the first ferrule and the second ferrule are separable from each other. The second ferrule is disposed such that each of the plurality of core regions is optically connected to a corresponding one of the plurality of first cores via a gap.