摘要:
A thermoplastic polyimide having good processing characteristics, obtainable by polymerizing an acid component and a diamine component, wherein an aromatic tetracarboxylic acid dianhydride represented by formula (I): or its derivative is used at least as a part of the acid component.
摘要:
An optical fiber fixing system includes a clamp base and a clamp member. The clamp base has a V-groove on a top surface thereof. The depth of the V-groove is configured such that a ridgeline of an optical fiber projects beyond the top surface of the base when the optical fiber is mounted therein. The clamp member has a protrusion on a bottom surface thereof. The protrusion depresses, from the upside, the optical fiber mounted in the V-groove of the clamp base. Further, the protrusion is configured to extend substantially perpendicularly to the axial direction of the optical fiber.
摘要:
A loader picks up a workpiece from a container, and delivers it to a workstation downstream. An unloader receives the workpiece from the workstation upstream and puts it into a container. In the loader and the unloader respectively, a first stacker and a second stacker, for holding containers in stacked manner, are placed in parallel along direction Y. A table working as a container moving mechanism moves an extracted container along direction Y. A first container transfer mechanism extracts a container from the containers stacked in the first stacker and delivers it to the container moving mechanism. A second container transfer mechanism receives the container from the moving mechanism, and stacks it in the second stacker. A transfer-head working as a workpiece transfer mechanism picks up the workpiece from the container on the table, moves it along direction X, and delivers it to the workstation downstream.
摘要:
A fusion splicer and fusion splicing method for optical fibers is disclosed including a TV camera 32 which obtains transmitted light images passing through side areas of respective optical fibers 10, 20, an image processing unit 33 which calculates mode field diameters of the respective optical fibers from brightness distributions of the images in terms of directions traverse to the optical fibers to calculate a diametric difference between the mode field diameters, a movable base 57 to move abutted portions between the optical fibers relative to an electric discharge beam position, a drive unit 35 which implements additional electric discharge heating after applying electric discharge fusion splicing heating to the abutted portions while moving the electric discharge beam position toward one of the optical fibers, of which mode field diameter is regarded to be small, and a control unit 34 which controls an electric discharge power supply 36.
摘要:
A connection method connects an optical connector and an optical transmission element. The optical connector includes a connector housing, a stop-ring structure, and an optical fiber which protrudes from an end part of the stop-ring structure. The optical transmission element includes a tensile-strength fiber body. The connection method includes fuse-connecting a first end of the optical fiber with a second end of an optical fiber protruding from a transmission element terminal part of the optical transmission element; inserting a fuse-connected optical fiber part and the tensile strength fiber body inside a reinforcing sleeve provided with a hot melt body, and covering and bridging the transmission element terminal part and at least the end part of the stop-ring structure; and integrating the fuse-connected optical fiber part, the tensile strength fiber body, the transmission element terminal part, and the stop-ring structure, by a hot melt resin melted from the hot melt body.
摘要:
The object of the present invention is to provide an optical fiber fusion splice method in which two optical fibers having different mode field diameters are fusion spliced with a low splice loss without complicated words and special equipment other than a fusion splice device, and an optical fiber fusion splicer which is suitably used for the optical fiber fusion method; in order to achieve the object, the present invention provides an optical fiber fusion splice method for splicing two optical fibers having different mode field diameters comprising the steps of: arranging a first optical fiber having a small mode field diameter and a second optical fiber having a large mode field diameter so that the cut surfaces thereof face each other, heating by an electric discharge and fusion splicing the cut surfaces, shifting the heating position by an electric discharge in the first optical fiber by shifting integrally the first and second optical fibers in the longitudinal direction of the optical fibers, and additional heating the first optical fiber by an electric discharge.
摘要:
An optical fiber locking device is provided with a holder base, a table for support of an optical fiber, the table being fitted to the holder base and provided with a magnet and a slit, an openable and closable cover, being connected to the table by a hinge and detachably attached by the magnet and a sliding arm including a finger protruding out from the slit so as to operate the cover and a grip, and movably fitted to the holder base. When the grip is driven to a direction of the cover so as to drive the finger, the finger pushes the magnetically attached cover up so as to be opened.
摘要:
The present invention discloses an optical fiber fusion splicer which, together with fusing and splicing optical fibers in the state in which the jacket of each optical fiber core is clamped by being provided with a means by which a V-shaped groove base is moved up and down so that the axial centers of optical fiber cores are positioned at the proper position for electrical discharge, is provided with a mechanism that temporarily moves clamp upward and V-shaped groove base downward followed by re-clamping in order to eliminate a lift-up phenomenon during rotation alignment of the constant polarization optical fibers.
摘要:
In an optical fiber fusion reinforcing device, a distance from an end face 723 to a mid point C6 of a reinforcing device 7 is set equal to a distance from a fusion splicing point M to an end face of a fusion splicing device 6 where optical fibers 3, 3 are inserted. The fusion splicing device 7 includes: positioning member 72 for aligning a mid point C7 of a heat shrinkable reinforcing member 13, which is slidably mounted on the fusion spliced optical fibers, and the fusion splicing point M of the optical fibers 3, 3 with each other; housing portion for housing the optical fibers 3, 3 and the heat shrinkable reinforcing member 13 so that the fusion splicing point M and the mid point of the heat shrinkable reinforcing member 13 are aligned, and heater for melting the heat shrinkable reinforcing member 13 in the housing portion.
摘要:
The present invention is provided for accurately estimating an amount of angular disagreement of planes of polarization between two polarization-maintaining optical fibers when connecting the polarization-maintaining optical fibers. In the present invention, a distribution of the polarization-maintaining optical fibers by irradiating a light on the lateral side of the polarization-maintaining optical fibers. The positions and heights of peaks of brightness of a transmitted light produced by the irradiated light are varied to comply with the angular disagreement of an axis of polarization which traverses two stress applying sections toward the irradiation direction of the light of each polarization-maintaining optical fiber. The amount of angular disagreement of the planes of polarization can be accurately estimated from the positions and heights of the peaks.