Abstract: An object of the present invention is to provide a ferrule rotation engagement unit and an optical switch using the same capable of realizing stable optical characteristics in optical path switching with low power consumption and more economically. A ferrule rotation engagement unit according to the present disclosure includes a first ferrule and a second ferrule in which core centers of one or a plurality of single-core fibers are disposed on a circumference having a predetermined radius from a center in the cross section of the ferrule, a cylindrical sleeve into which one end of a convex shape of the first ferrule and the second ferrule are inserted, a spring that apply pressure to the first flange or the second flange in a direction in which the first ferrule and the second ferrule abut against each other, and a holder that holds the first ferrule, the second ferrule, and the sleeve so that the center axes of the first ferrule and the second ferrule are aligned.

Abstract: An object of the present disclosure is to provide an optical switch and an optical switch system capable of achieving optical path switching with less power. In order to achieve the above object, an optical switch according to the present disclosure includes a plate-shaped cladding provided with a trench in a thickness direction, opposing lenses exposed to the trench, two optical waveguides coaxially arranged inside the cladding, respective one ends of the optical waveguides being exposed to a surface of the cladding and respective other ends of the optical waveguides opposing each other in the trench via the opposing lenses, a movable transparent body that transmits light of the opposing lenses when the transparent body is sandwiched by the opposing lenses in the trench, and a movable double-sided mirror that reflects light incident from the opposing lenses in a direction opposite to an incident direction when the double-sided mirror is sandwiched between the opposing lenses in the trench.

Abstract: The present disclosure is an optical line switching node device N which includes an optical switch part 2 which performs optical path switching between communication optical fibers F-0, F-1; a communication optical signal extraction part 5-0, 5-1 which extracts some of communication optical signals from one or both of the communication optical fibers F-0, F-1 and photoelectrically converts the extracted some of the communication optical signals; and a communication optical signal storage part 6 which stores some of communication optical signals photoelectrically converted in the communication optical signal extraction part 5-1, 5-1 and uses the stored energy to drive the optical switch part 2.

Abstract: It is aimed to provide an optical node, a remote control system, and a remote control method capable of improving a communication speed of an uplink signal.

Abstract: An object of the present disclosure is to provide an optical multiplexing/demultiplexing circuit manufacturing device and an optical multiplexing/demultiplexing circuit manufacturing method for polishing a portion of a side surface of an optical fiber core wire by a desired polishing amount without measuring optical loss by cutting an active optical fiber core wire.

Abstract: An object of the present disclosure is to enable an optical switch capable of driving stable optical characteristics with respect to external factors with low power consumption to be achieved at low cost. The present disclosure is an optical connection device that connects a first ferrule and a second ferrule, the optical connection device including: a cylindrical sleeve into which the first ferrule and the second ferrule are inserted; a spring that abuts a distal end portion of the first ferrule and a distal end portion of the second ferrule on each other; and a holder that holds the first ferrule, the second ferrule, the cylindrical sleeve, and the spring, in which the first ferrule or the second ferrule is movable in any direction perpendicular to a central axis in the holder, and is held by the holder so as not to rotate about the central axis.

Abstract: An object of this disclosure is to enable space saving of an optical fiber connection unit such as an optical switch. According to this disclosure, there is provided an optical connection module that connects first and second multi-fiber connectors, in which the first and second multi-fiber connectors have optical fibers which are two-dimensionally arranged. In the first multi-fiber connector, optical fibers connected to a same optical switch are arranged in a vertical direction, and optical fibers connected to different optical switches are arranged in parallel in a horizontal direction. In the second multi-fiber connector, optical fibers connected to a same optical switch are arranged in a horizontal direction, and optical fibers connected to different optical switches are arranged in parallel in a vertical direction.

Abstract: An object of the present disclosure is to provide an optical switch that does not require power supply.

Abstract: An object of the present invention is to provide an optical node capable of compensating for a rotation angle deviation of an optical fiber core of a ferrule rotation type optical switch and reducing a connection loss generated in the optical switch.

Abstract: An object of the present disclosure is to connect an optical fiber and an optical waveguide with a low loss. The present disclosure is an optical connector plug, including: an optical waveguide having two guide pin V-grooves engraved on one surface thereof and having a cross section of one or more cores appearing between cross sections of the guide pin V-grooves on one end face thereof; two guide pins separately arranged in the two guide pin V-grooves; a flat substrate so fixed as to tuck the two guide pins in the two guide pin V-grooves on the one surface of the optical waveguide; and a fixing member equipped with the optical waveguide, the two guide pins, and the flat substrate.

Abstract: An object of the present disclosure is to provide an optical switch that does not require power supply.

Abstract: An object of the present disclosure is to realize a compact and low-cost optical monitoring device capable of accurately measuring the power of an optical signal regardless of the polarization state of an incident optical signal for a multi-core optical fiber.

Abstract: The present disclosure aims to reduce the size and cost of this optical monitoring device that detects the intensity of light propagating through an optical fiber.

Abstract: The present disclosure has been proposed in view of the above circumstances, and an object is to provide a multi-core optical connector that does not need to increase a spring pressing force even when the number of cores to be connected increases. The present disclosure is an optical connector including: a ferrule that holds a plurality of optical fibers in a state where end faces of the plurality of optical fibers are arranged on the same plane; and a refractive index matching portion that is deformable, in close contact with the end faces of the plurality of optical fibers arranged on the ferrule, and performs matching of a refractive index with the plurality of optical fibers.

Abstract: An object of the present disclosure is to provide an optical connector cleaning tool capable of cleaning a ferrule end surface with an appropriate force regardless of an operator. The present disclosure is an optical connector cleaning tool including a housing that stores a cleaning sheet, an opening portion through which a part of the cleaning sheet is exposed from the housing, a slide mechanism that causes the cleaning sheet exposed to the opening portion to slide, a cleaning sheet support portion that is fixed to the housing and supports the cleaning sheet toward the opening portion, a plug holding unit that holds an optical connector plug having a ferrule disposed at a distal end thereof at the opening portion, and a pressing portion that applies a pressing force between the cleaning sheet support portion and the plug holding unit.

Abstract: An object of the present disclosure is to provide a simple, compact optical switch with low power consumption.

Abstract: In a block (10) for a cable of the present disclosure, the block has a shape of a rectangular cuboid in which an upper surface (11) and a bottom surface have square shapes, the block has plural bending through holes (21) between one side surface of the rectangular cuboid and a side surface (12) neighboring the one side surface, arrangement of open ends (22) of the plural through holes in the one side surface of the rectangular cuboid is in a lattice manner, the arrangement of the open ends is in line symmetry with respect to a middle line (31) between an upper side and a bottom side of the one side surface and with respect to a middle line (32) between a lateral side and a lateral side of the one side surface, and arrangement of open ends (22) of the plural through holes in the side surface neighboring the one side surface of the rectangular cuboid is the same as the arrangement of the open ends (22) of the plural through holes in the one side surface of the rectangular cuboid.

Abstract: An objective of the present disclosure is to provide an optical coupler and an optical switch capable of achieving stable optical characteristics with low power consumption and more economical efficiency with respect to external factors.

Abstract: An object of the present disclosure is to enable a plurality of single-core fibers to be easily and collectively connected. The present disclosure relates to a cylindrical multi-core ferrule having a cylindrical shape and having through holes formed therein for holding a plurality of optical fibers on the same circle centered on a central axis of the cylindrical shape and an optical connector in which the cylindrical multi-core ferrule are disposed opposite to each other and a gap is formed between end surfaces of an optical fiber held by the cylindrical multi-core ferrule.

Abstract: The disclosure provides a monitoring control device and an optical power supply system in which a system capable of remotely controlling many optical power supply type optical nodes can be economically constructed. A monitoring control device according to the present disclosure includes control means for executing power supply and power supply time allocation for selecting a control target optical node based on the amount of stored energy of a plurality of optical nodes. According to the present disclosure, in a system that includes a monitoring control device installed in a power supply environment and one or a plurality of remotely arranged optical line switching nodes, optical power supply and control of a plurality of optical switches included in the nodes and management of an amount of stored power can be simultaneously implemented with a single laser. Thus, it is possible to provide an economical optical line switching node system.