Abstract: An optical connection structure including first optical fibers, second optical fibers, a first optical connector, and a second optical connector is disclosed. The first optical connector is configured such that each of first distal end portions of the first optical fibers protrudes from a first front end surface to the outside when the first optical connector and the second optical connector are connected to each other. Each of the first distal end portions is inserted into a corresponding second fiber hole of the second optical connector. The second optical connector is configured such that each of second distal end portions of the second optical fibers is moved rearward inside second fiber holes due to each of the first distal end portions respectively inserted into the second fiber holes. The first optical fibers and the second optical fibers are optically coupled to each other inside the second fiber holes.

Abstract: An optical connection structure including first optical fibers, second optical fibers, a first optical connector, and a second optical connector is disclosed. The first optical connector is configured such that each of first distal end portions of the first optical fibers protrudes from a first front end surface to the outside when the first optical connector and the second optical connector are connected to each other. Each of the first distal end portions is inserted into a corresponding second fiber hole of the second optical connector. The second optical connector is configured such that each of second distal end portions of the second optical fibers is moved rearward inside second fiber holes due to each of the first distal end portions respectively inserted into the second fiber holes. The first optical fibers and the second optical fibers are optically coupled to each other inside the second fiber holes.

Abstract: A wiring module includes: a bottom plate; a module having two surfaces facing each other; a plurality of optical fibers, each of which is connected to the module via at least one of the surfaces of the module; and a plurality of reels which are sequentially stacked on an upper surface of the bottom plate, each of the plurality of reels accommodating a bundle of one corresponding optical fiber among the plurality of optical fibers. The module is disposed in a space formed inside the plurality of reels which are stacked.

Abstract: An optical connection structure including first optical fibers, second optical fibers, a first optical connector, and a second optical connector is disclosed. The first optical connector is configured such that each of first distal end portions of the first optical fibers protrudes from a first front end surface to the outside when the first optical connector and the second optical connector are connected to each other. Each of the first distal end portions is inserted into a corresponding second fiber hole of the second optical connector. The second optical connector is configured such that each of second distal end portions of the second optical fibers is moved rearward inside second fiber holes due to each of the first distal end portions respectively inserted into the second fiber holes. The first optical fibers and the second optical fibers are optically coupled to each other inside the second fiber holes.

Abstract: A package for an optical fiber includes: a base portion; a plurality of protruding portions that protrude from a flat surface of the base portion, are arranged along an outer periphery of the base portion, and are configured so that an optical fiber including a connector mounted to at least one end thereof is wound along a part of an outer periphery of each of the protruding portions; a mounting portion to which the connector of the optical fiber is to be mounted; and a plurality of fall-off preventing portions that are formed integrally with the base portion and capable of restricting a position of the optical fiber to be wound over the plurality of protruding portions.

Abstract: A termination unit includes: a plurality of first optical fibers fusion-connected to a multicore cable; a tray slidable in a first direction, the tray being provided on one end side of the termination unit in the first direction; and a plurality of adapters which are provided in a line on the tray, to which a plurality of second optical fibers are connected from each of one end sides of the adapters, and to which the plurality of first optical fibers are connected from each of the other end sides of the adapters, in which the tray has a cover part for protecting the plurality of adapters, and in which the cover part is rotatable with a shaft that extends along a second direction, and the cover part rotates downward when the tray has slid in a direction toward the one end side from the other end side.

Abstract: A termination unit includes: a plurality of first optical fibers fusion-connected to a multicore cable; a tray slidable in a first direction, the tray being provided on one end side of the termination unit in the first direction; and a plurality of adapters which are provided in a line on the tray, to which a plurality of second optical fibers are connected from each of one end sides of the adapters, and to which the plurality of first optical fibers are connected from each of the other end sides of the adapters, in which the tray has a cover part for protecting the plurality of adapters, and in which the cover part is rotatable with a shaft that extends along a second direction, and the cover part rotates downward when the tray has slid in a direction toward the one end side from the other end side.

Abstract: A termination unit located on a rack part of an optical fiber rack includes a housing a plurality of first optical fibers located in the housing, the plurality of first optical fibers being fusion spliced to a multi fiber cable introduced from an outside of the optical fiber rack, an adapter group including a plurality of adapters in a line in the housing, the plurality of adapters being respectively connected to the plurality of first optical fibers on an inside of the housing and being respectively connected to a plurality of second optical fibers on an outside of the housing, and an optical fiber passing part through which at least one optical fiber is configured to pass, the optical fiber passing part being located in at least one of: the adapter group, and between the housing and the adapter group in an arrangement direction.

Abstract: An optical fiber rack includes a rack part on which a termination unit is located, and an optical fiber housing part for housing an extra length wiring part in an optical fiber bundle, the optical fiber housing part being positioned in a first direction. The termination unit includes a plurality of first optical fibers, a ay provided on one end side of the termination unit in a second direction, the tray being slidable in the second direction, and a plurality of adapters which are arranged in a line on the tray. The tray has a first support part for supporting the optical fiber bundle, the optical fiber rack further includes a second support part arranged in the second direction with respect to the first support part, and the second support part stretchably supports the optical fiber bundle extending from the first support part to the optical fiber housing part.

Abstract: A termination unit located on a rack part of an optical fiber rack includes a housing a plurality of first optical fibers located in the housing, the plurality of first optical fibers being fusion spliced to a multi fiber cable introduced from an outside of the optical fiber rack, an adapter group including a plurality of adapters in a line in the housing, the plurality of adapters being respectively connected to the plurality of first optical fibers on an inside of the housing and being respectively connected to a plurality of second optical fibers on an outside of the housing, and an optical fiber passing part through which at least one optical fiber is configured to pass, the optical fiber passing part being located in at least one of: the adapter group, and between the housing and the adapter group in an arrangement direction.

Abstract: A multi-core/single-core conversion module is disclosed. The multi-core/single-core conversion module includes a housing including a first end, a second end and a lateral wall defining an inner space between the first end and the second end, a first adapter attached to the first end of the housing, two or more second adapters attached to the second end of the housing, a multi-core optical connector inserted into the first adapter from the inner space of the housing, a plurality of single-core optical connectors respectively inserted into the second adapters from the inner space of the housing, and a plurality of optical fibers connecting the multi-core optical connector to the plurality of single-core optical connectors with each other. The second adapters are arranged on the second end across a plurality of tiers. An opening can be formed by a part of the lateral wall being detached.

Abstract: An optical fiber with a connector includes a first connector and a plurality of optical fibers attached to the first connector. The first connector includes: at least one fiber-shaped member; and a ferrule including a first end surface and a second end surface arranged in a first direction, and a holding portion holding the optical fibers and the fiber-shaped member. In the holding portion, a plurality of fiber insertion holes extending from the first end surface in the first direction is formed such that the optical fibers and the fiber-shaped member are insertable thereinto. One end of the optical fiber and one end of the fiber-shaped member are held by the holding portion in a state of being inserted into the fiber insertion hole. The optical fiber extends to the outside of the ferrule. The other end of the fiber-shaped member is located inside the ferrule.

Abstract: An optical fiber with a connector includes a first connector and a plurality of optical fibers attached to the first connector. The first connector includes: at least one fiber-shaped member; and a ferrule including a first end surface and a second end surface arranged in a first direction, and a holding portion holding the optical fibers and the fiber-shaped member. In the holding portion, a plurality of fiber insertion holes extending from the first end surface in the first direction is formed such that the optical fibers and the fiber-shaped member are insertable thereinto. One end of the optical fiber and one end of the fiber-shaped member are held by the holding portion in a state of being inserted into the fiber insertion hole. The optical fiber extends to the outside of the ferrule. The other end of the fiber-shaped member is located inside the ferrule.

Abstract: A multi-core/single-core conversion module is disclosed. The multi-core/single-core conversion module includes a housing including a first end, a second end and a lateral wall defining an inner space between the first end and the second end, a first adapter attached to the first end of the housing, two or more second adapters attached to the second end of the housing, a multi-core optical connector inserted into the first adapter from the inner space of the housing, a plurality of single-core optical connectors respectively inserted into the second adapters from the inner space of the housing, and a plurality of optical fibers connecting the multi-core optical connector to the plurality of single-core optical connectors with each other. The second adapters are arranged on the second end across a plurality of tiers. An opening can be formed by a part of the lateral wall being detached.

Abstract: An optical fiber with a connector includes a first connector and a plurality of optical fibers attached to the first connector. The first connector includes: at least one fiber-shaped member; and a ferrule including a first end surface and a second end surface arranged in a first direction, and a holding portion holding the optical fibers and the fiber-shaped member. In the holding portion, a plurality of fiber insertion holes extending from the first end surface in the first direction is formed such that the optical fibers and the fiber-shaped member are insertable thereinto. One end of the optical fiber and one end of the fiber-shaped member are held by the holding portion in a state of being inserted into the fiber insertion hole. The optical fiber extends to the outside of the ferrule. The other end of the fiber-shaped member is located inside the ferrule.

Abstract: An optical fiber with a connector includes a first connector and a plurality of optical fibers attached to the first connector. The first connector includes: at least one fiber-shaped member; and a ferrule including a first end surface and a second end surface arranged in a first direction, and a holding portion holding the optical fibers and the fiber-shaped member. In the holding portion, a plurality of fiber insertion holes extending from the first end surface in the first direction is formed such that the optical fibers and the fiber-shaped member are insertable thereinto. One end of the optical fiber and one end of the fiber-shaped member are held by the holding portion in a state of being inserted into the fiber insertion hole. The optical fiber extends to the outside of the ferrule. The other end of the fiber-shaped member is located inside the ferrule.

Abstract: An OCT catheter and a method for manufacturing the OCT catheter, with which the operation time, manufacturing cost, and the risk of breakage of a spliced portion between a short-length fiber and an optical fiber contained in an interior member can be reduced, are provided. An OCT catheter includes an interior member that contains an optical fiber and that is to be inserted into a body, a metal tube that guides the interior member, and an optical connector. The optical connector includes a ferrule assembly including a short-length fiber and a ferrule fixed to one end of the short-length fiber, and is connectable to a rotary joint of an OCT system. The other end of the short-length fiber and one end of the optical fiber contained in the interior member are fusion-spliced together to form a spliced portion. The spliced portion is disposed in the metal tube.

Abstract: Operation efficiency can be dramatically improved and a smaller configuration can be obtained by simplifying the optical connection. An optical module has an electrical connector to connect a device; an optical element unit being electrically connected to the electrical connector and provided with optical elements to convert electrical signals and optical signals and emitting or receiving light; an optical ferrule, having a plurality of optical fiber insertion holes, to hold optical fibers inserted into the plurality of optical fiber insertion holes so as to allow the fibers to be optically connected to the optical element; and an optical cable inlet to introduce an end part of an optical cable provided with the optical fibers. The cable unit with an optical module has an optical cable that includes a plurality of optical fibers and an optical module provided at two ends of the optical cable.

Abstract: An optical connector that is capable of ensuring excellent waterproofing using a simple structure is provided. The optical connector comprises a connector plug and socket. Each of the plug and socket have a housing, which has a cable-guiding part and a cable-retaining part; a ferrule disposed within the housing and to hold a leading-end part of an optical fiber exposed from a sheath of an optical cable; and a seal member disposed between the cable-guiding part and the cable-retaining part to seal the cable-guiding part.

Abstract: To provide an optical connector that enables the reduction in the number of parts and can be easily attached to an optical cable, a concave portion 18 for a ferrule is formed in a plug housing 6, and a ferrule 3 is inserted from the side of a collar portion 10 into the concave portion 18 for a ferrule. A hook portion 28 for a ferrule is provided in a protruding condition inside the plug housing 6. The collar portion 10 is guided by the hook portion 28 for a ferrule, which has been elastically deformed, and moves toward a bottom surface 26 of the concave portion 18 for a ferrule. Where the collar portion 10 reaches a space between the bottom surface 26 and the hook portion 28 for a ferrule, the hook portion 28 for a ferrule is elastically restored. Therefore, even if the collar portion 10 tries to move toward an opening 24 of the concave portion 18 for a ferrule, the collar portion is locked by the hook portion 28 for a ferrule and the movement is inhibited.