Abstract: A fusion splicing method includes a step of exposing a glass fiber in a distal end region of an optical fiber strand, a step of disposing the optical fiber strand in a V-shaped groove, a step of pressing the optical fiber strand disposed in the V-shaped groove against the V-shaped groove by a clamp, and a step of causing the optical fiber strand to slide on the V-shaped groove. In the step of disposing the optical fiber strand in the V-shaped groove, a region of the coating portion that is not removed in the optical fiber strand is disposed in the V-shaped groove.

Abstract: An optical fiber holder holds an optical fiber cable including an optical fiber strand and a sheath covering the optical fiber strand. The optical fiber holder includes: a base portion having a placement surface on which the optical fiber cable is placed; and a lid portion openably and closably attached to the base portion to cover at least a part of the placement surface. The lid portion includes one or a plurality of pads facing the placement surface, and pressing the optical fiber cable against the placement surface in a state where the lid portion is closed, and an angle defining portion that is located closer to a lead-out tip of the optical fiber strand than all the pads in an extending direction of the optical fiber strand, and that covers the optical fiber strand exposed from the sheath, to define a lead-out angle of the optical fiber strand.

Abstract: A housing case for a fusion splicer is a housing case for housing the fusion splicer for an optical fiber. The housing case for a fusion splicer includes a case main body including a first side wall, and a lid body attached to the case main body to be openable and closable. The lid body includes a second side wall configured to match the first side wall when closed. At least one of the first side wall and the second side wall includes an insertion portion configured for a cable extending from the inside of the housing case to the outside thereof to be inserted through the insertion portion in a state where the lid body is closed with respect to the case main body.

Abstract: An optical fiber positioning component is installed in an optical fiber fusion splicing machine to position an optical fiber on a plane intersecting a central axis of the optical fiber. The optical fiber positioning component comprises: a ceramic base having a V-groove; a metal layer which is provided on the base and which is in contact with the base, at least inside the V-groove, and which includes at least one metal selected from the group comprising Cr, Ti, Ta and Nb; an oxide layer which is provided on the metal layer and which is in contact with the metal layer; and a water-repellent and oil-repellent coating layer which is provided on the oxide layer and which is in contact with the oxide layer. The optical fiber positioning component positions the optical fiber by the coating layer on the inside of the V-groove coming into contact with the optical fiber.

Abstract: An optical fiber fusion splicing method for performing fusion splicing through positioning of optical fibers to be spliced in a V-groove is provided. The optical fiber fusion splicing method includes pressing the optical fibers placed in the V-groove relatively toward the V-groove using a clamp, varying a clamp pressure of the clamp pressing the optical fibers, and moving the optical fibers placed in the V-groove with respect to the V-groove in an axial direction.

Abstract: A fusion splicer according to one embodiment includes a pedestal including a plurality of V-grooves that position a plurality of respective optical fibers; and a plurality of clamps for pressing the plurality of optical fibers placed in the plurality of respective V-grooves. The plurality of clamps are arranged along the arrangement direction of the plurality of optical fibers. Each of the plurality of clamps is configured to press the optical fibers corresponding to each clamp.

Abstract: A fusion splicer for fusing and splicing one or a plurality of optical fibers with another or other optical fibers includes a base member having one or a plurality of V-grooves in which the one or the plurality of optical fibers are set, and one or a plurality of recesses crossing the one or the plurality of V-grooves are formed in the base member.

Abstract: An optical fiber cleaving apparatus for cutting an optical fiber includes a blade member configured to damage the optical fiber, and a rotation mechanism configured to rotate the blade member by a predetermined angle each time the blade member damages the optical fiber. The predetermined angle is a numerical value that is not capable of dividing 360.

Abstract: A fusion splicer (1) for fusion-splicing a plurality of optical fibers (3L), arranged side by side along a direction intersecting a longitudinal direction, with respective other optical fibers (3R) includes a base member (11L) with a groove portion (17L) having a plurality of V-grooves formed therein for setting the plurality of optical fibers (3L), and a pair of guide walls (12FL, 12BL) configured to guide setting of the plurality of optical fibers (3L) into the plurality of V-grooves, wherein the pair of guide walls (12FL, 12BL) are disposed at an interval in a width direction of the groove portion (17L), one (12FL) of the guide walls constituting the pair has a guide surface (GF1) capable of coming into contact with one of the plurality of optical fibers (3L), another one (12BL) of the guide walls constituting the pair has a guide surface (GF2) capable of coming into contact with another one of the plurality of optical fibers (3L), and each guide surface (GF1, GF2) includes a portion inclined toward the gr

Abstract: A fusion splicer for fusion splicing an optical fiber includes a base member having a V groove in which the optical fiber is provided, wherein a stepped portion is provided on an inclined surface of the V groove, and the stepped portion is provided at a position making contact with the optical fiber.

Abstract: A housing case for a fusion splicer is a housing case for housing the fusion splicer for an optical fiber. The housing case for a fusion splicer includes a case main body including a first side wall, and a lid body attached to the case main body to be openable and closable. The lid body includes a second side wall configured to match the first side wall when closed. At least one of the first side wall and the second side wall includes an insertion portion configured for a cable extending from the inside of the housing case to the outside thereof to be inserted through the insertion portion in a state where the lid body is closed with respect to the case main body.

Abstract: A tray for fusion splicing work is a tray used for fusion splicing work for an optical fiber, and includes a tray main body and a first body contact member. The tray main body includes a pair of long wall portions extending along a first direction, and a pair of short wall portions extending along a second direction. The first body contact member includes an outer surface configured to come into contact with a body of an operator using the fusion splicer and is attached to the tray main body on a side of one long wall portion of the pair of long wall portions. The first body contact member is able to be transitioned between an unfolded state in which the outer surface is unfolded in a third direction and a housed state in which the first body contact member is housed from the unfolded state.

Abstract: Provided is an optical fiber holder comprising a holder body and a cover. The holder body has an accommodation section capable of accommodating a plurality of optical fibers. The holder body or the cover has at least one ridge which can be disposed within the accommodation section. When the cover is closed over the holder body, a plurality of sections which can parallelly accommodate the plurality of optical fibers are parallelly formed by the inner surface of the accommodation section, the lower surface of the cover, and the ridge.

Abstract: An optical fiber holder for holding an optical fiber includes: a holder main body; and a groove part that is capable of holding a part of the held optical fiber. The optical fiber holder has an adjustment mechanism that is capable of adjusting a position of the groove part with respect to the holder main body in a state where the groove part is placed on the holder main body.

Abstract: This optical fiber alignment jig for aligning a plurality of optical fibers with the tip end coating stripped off to expose glass fiber includes a rail; a convex push-up part capable of moving in the extending direction of the rail; and a plurality of plate-shaped parts that each have a first surface and a second surface perpendicular to the extending direction of the rail and an inclined surface that can carry a respective optical fiber, the inclined surfaces of the plurality of plate-shaped parts being inclined, relative to the extending direction of the rail, in the same direction. The plurality of plate-shaped parts are arranged side by side along the extending direction of the rail with the first surface of one plate-shaped part facing the second surface of an adjacent plate-shaped part and are contacted by the push-up part so as to move toward the inclined surface side.