JP2005258129A - Optical fiber holder and array member - Google Patents

Abstract

An optical fiber holder capable of collectively connecting a plurality of optical fibers having different diameters, and an array member used therefor are provided.
An optical fiber holder (101) includes a holder main body (102) having a groove for holding the optical fiber core wire, and a lid attached to the groove forming surface side of the holder main body (102) so as to be freely opened and closed. A first arrangement groove (104) for aligning a plurality of optical fiber core wires in the holder body (102), and a longitudinal direction of the first arrangement groove (104). A plurality of positioning grooves (105) for converting the arrangement pitch of the optical fiber cores into a first alignment groove (104) for aligning a plurality of optical fiber cores in the longitudinal direction of the positioning groove (105) ) Narrower than the second array groove (106).
[Selection] Figure 1

Description

  The present invention relates to an optical fiber holder and an array member, and more particularly to an optical fiber holder and an array member used when a plurality of optical fibers having different diameters are connected together.

  In the field of communications, optical fibers capable of high-speed and large-capacity transmission have become the mainstream of transmission lines, and most medium- and long-distance trunk lines have already replaced optical fiber cables instead of conventional metal cables. Particularly in recent years, practical use of an optical subscriber transmission system that uses optical fiber for the transmission path from the trunk line to each home has begun. In this case, a cable having at least one single-core wire is drawn into each subscriber's house. Moreover, in the trunk cable, a multi-core (4 cores or 8 cores) optical fiber tape core wire in which one optical fiber core wire is collectively covered in a tape shape is used. Therefore, the optical fiber tape core wire of the trunk cable extended from the station is branched into a single core wire in the vicinity of the subscriber's home, and the optical fiber is wired to each subscriber's home by connecting to the pull-in single core wire. .

  In view of simplification of the operation of branching to a single core wire during wiring and handling of the single core wire, a single core wire having an outer diameter of 0.25 mm is further added as shown in FIG. Is being considered to increase the diameter of the single core wire.

  On the other hand, for optical fiber connection, optical fiber strands are abutted in the V-groove and aligned, and fixed in this state, mechanical splices or optical fiber strands that easily connect the strands to each other There is a fusion splicing or the like in which the surfaces are butted and the butted surfaces are melted together. These connections can be made between single-core wires or tape-core wires in which single-core wires are aligned at the same arrangement pitch.

Further, an optical fiber holder is used to hold each optical fiber core wire used for these connections. As shown in FIG. 8, the optical fiber holder (800) is openable and closable on the side of the groove forming surface of the main body (801) and the main body (801) provided with a groove (802) for straightly holding the optical fiber core wire. It is comprised with the cover body (803a) attached to (803b). A magnet (804) is embedded on the groove forming surface side of the main body (801), and the main body (801) and the lids (803a), (803b) are magnetized by the magnet (804), and as a result, The optical fiber core wire (806) is held. The lids (803a) and (803b) are each provided with a pressing member (805) such as rubber or a paper file at a contact portion with the groove (802), and each pressing member (805). However, the optical fiber core wire (806) disposed in the groove (802) is prevented from shifting in the groove extending direction.
JP2003-172845

  By the way, this optical fiber holder is used to align and hold one single core wire, one tape core wire, or a plurality of single core wires having an outer diameter of 0.25 mm at the same arrangement pitch as the tape core wire. there were.

  Therefore, when the diameter of the single core wire is increased, for example, when the single core wire has an outer diameter of 0.5 mm, when the single core wires are aligned, the arrangement pitch becomes 0.5 mm, and the arrangement pitch of the tape core wires ( 0.25 mm), and the conventional mechanical splice and fusion splicing could not be used to connect multiple cores at once. For this reason, it is necessary to separate the tape core wire into a single core wire and perform the connection a plurality of times, resulting in a problem that the connection work time increases.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an optical fiber holder and an array member used for the optical fiber holder that can solve the above-described problems and can collectively connect a plurality of optical fibers having different diameters.

  In order to achieve the above object, an optical fiber holder of the present invention includes a holder main body having a groove for gripping an optical fiber core wire, and a lid body attached to the groove forming surface side of the holder main body so as to be freely opened and closed. An optical fiber holder comprising: a first arrangement groove for aligning a plurality of optical fiber cores in the holder body; and an arrangement pitch of the optical fiber core wires in the longitudinal direction of the first arrangement groove A plurality of positioning grooves and a second arraying groove having a narrower width than the first arraying groove for aligning the plurality of optical fiber cores in the longitudinal direction of the positioning grooves. Is.

  Furthermore, in order to achieve the above object, an optical fiber holder of the present invention is attached to a holder main body having a groove for gripping an optical fiber core wire and to be openable and closable on the groove forming surface side of the holder main body. In the optical fiber holder provided with a lid, in the holder main body, a first storage groove for storing an array member in which a plurality of optical fiber cores are arranged, and an optical fiber core in the longitudinal direction of the first storage groove A plurality of positioning grooves for converting the arrangement pitch of the lines and an arrangement groove for aligning a plurality of optical fiber core wires in the longitudinal direction of the positioning grooves are formed.

  Moreover, it is preferable to provide the 2nd accommodation groove for accommodating the said arrangement | sequence member in the surface on the opposite side to the surface in which the positioning groove | channel of the said holder main-body part was formed.

  Moreover, it is preferable that the positioning groove is formed by a groove having a depth larger than the outer diameter of the optical fiber core wire arranged in the first arrangement groove or the arrangement member.

  The array member of the present invention is used for the above optical fiber holder, and includes a groove having a width corresponding to the number of optical fiber cores to be arrayed, and a surface of the groove in contact with the optical fiber core wire is half. It is formed of an adhesive member.

  An optical fiber holder of the present invention includes a first array groove for aligning a plurality of optical fiber core wires in a holder body, a plurality of positioning grooves for converting the array pitch of the optical fiber core wires, and a first array. By forming the second array groove having a narrower width than the groove, the array pitch of the plurality of optical fiber cores is changed from the array pitch aligned with the first array groove to the second array groove. Can be converted to By changing the arrangement pitch, the arrangement pitch of optical fibers with different diameters can be made equal, so it is possible to connect a plurality of optical fibers at a time, and the connection time is shortened compared to the case where single fibers are connected together. it can.

  An optical fiber holder of the present invention includes a first storage groove for storing an array member in which a plurality of optical fiber cores are arrayed in a holder body, and a plurality of positioning grooves for converting the array pitch of the optical fiber cores. And an array groove for aligning a plurality of optical fiber cores, the array pitch of the plurality of optical fiber cores is arrayed from the array pitch arrayed on the array member to the array groove It is possible to convert to pitch. By changing the arrangement pitch, the arrangement pitch of optical fibers with different diameters can be made equal, so it is possible to connect a plurality of optical fibers at a time, and the connection time is shortened compared to the case where single fibers are connected together. it can.

  In addition, after arranging a plurality of optical fiber core wires in the arrangement member in advance, the arrangement member can be installed in the first storage groove of the holder body, so that the operation is simplified. In addition, after arranging a plurality of optical fiber cores on the array member, the partial removal of the coating layer of the plurality of optical fiber cores can be performed all at once, so the work procedure can be reduced.

  Moreover, the arrangement member can be installed in the second accommodation groove by providing the second accommodation groove for accommodating the arrangement member on the surface opposite to the surface on which the positioning groove of the holder main body is formed. Thereby, when the size of the arrangement member is small and difficult to handle, the work can be facilitated by setting and handling the arrangement member in the second storage groove.

  In addition, a light having a width corresponding to the number of optical fiber cores arranged by the arraying member is provided, and a surface in contact with the optical fiber core wire of the groove is formed of a semi-adhesive member. It becomes difficult for the fiber core wire to come off from the groove of the array member, and workability can be improved.

  Further, the plurality of positioning grooves for converting the arrangement pitch of the optical fiber cores are formed of grooves having a depth larger than the outer diameter of the optical fiber cores arranged in the first array grooves or the array members. In this positioning groove, the optical fiber core wire can be stored with a margin without jumping out, and the handling becomes easy.

  Embodiments of the present invention will be described with reference to the drawings.

  The optical fiber holder of the first embodiment is shown in FIG. FIG. 1B shows a state in which the optical fiber core shown in FIG. 2 is housed in the optical fiber holder shown in FIG.

  The optical fiber holder (101) includes a main body (102) that holds the optical fiber core wire (201) in its longitudinal direction, and lids (103a) (103b) that are attached to the groove forming surface side of the main body so as to be opened and closed. A first array groove (104) for aligning a plurality (four in FIG. 1) of optical fiber core wires (201) on the holder body (102), and an optical fiber core wire in the longitudinal direction of the first array groove A plurality (four in the figure) of positioning grooves (105) for converting the arrangement pitch of the optical fibers and the optical fiber core wire from which the secondary coating layer has been removed are aligned in the longitudinal direction of the positioning grooves (105) And a second array groove (106) having a narrower width than the first array groove (104).

  More specifically, in the case of an optical fiber holder used when collectively connecting four single-core wires having an outer diameter of 0.5 mm and four-core tape wires each having an outer diameter of 0.25 mm, the first array groove Forms a groove width of about 0.5 × 4 = 2 mm so that four optical fiber cores with an outer diameter of 0.5 mm can be arranged, and the second array groove has four optical fiber cores with an outer diameter of 0.25 mm. A groove width of about 0.25 × 4 = 1 mm is formed so that the lines are arranged. The positioning groove (105) for converting the arrangement pitch can accommodate and wire the primary coating layer (203) of the optical fiber core wire arranged at the entrance side (105a) at a pitch of 0.5 mm. On the outlet side (105b), four primary coating layers (203) having an outer diameter of 0.25 mm are arranged side by side and arranged at a pitch of 0.25 mm, and the four grooves exit from the inlet side (105a). It is formed so that the entire width becomes narrower toward the side (105b). The positioning grooves (105) for changing the arrangement pitch are preferably formed with a depth larger than 0.5 mm.

  The optical fiber holder of the second embodiment is shown in FIG. FIG. 3 shows a state in which the array member in which the optical fiber cores shown in FIG. 2 are arrayed is housed.

  The optical fiber holder (301) includes a main body (302) that holds the optical fiber core wire (201) in its longitudinal direction, and lids (303a) and (303b) that are attached to the groove forming surface side of the main body so as to be freely opened and closed. A first storage groove (304) for storing an array member (307) in which a plurality (four in FIG. 3) of optical fiber core wires (201) are arranged in the holder body (302), and a first storage groove A plurality (four in FIG. 3) of positioning grooves (305) for converting the arrangement pitch of the optical fiber core wires in the longitudinal direction of (304), and a secondary coating layer in the longitudinal direction of the positioning grooves (305) And an array groove (306) for aligning the removed optical fiber core wire.

  More specifically, in the case of an optical fiber holder used when collectively connecting four single-core wires having an outer diameter of 0.5 mm to four-core tape core wires each having an outer diameter of 0.25 mm, the first storage groove Can accommodate an array member (307) in which four optical fiber cores (201) with an outer diameter of 0.5 mm are arranged side by side, and the array groove (306) has four optical fiber core wires with an outer diameter of 0.25 mm aligned. As shown, a groove width of about 0.25 × 4 = 1 mm is formed. The positioning groove (305) for converting the arrangement pitch can accommodate and wire the first coating layer (203) of the optical fiber core wire on the entrance side (305a) arranged at a pitch of 0.5 mm. On the side (305b), four primary coating layers (203) are arranged side by side and arranged at a pitch of 0.25 mm, and the four grooves extend from the inlet side (305a) to the outlet side (305b). The entire width is narrowed. The positioning grooves (105) for changing the arrangement pitch are preferably formed with a depth larger than 0.5 mm.

  Moreover, it is preferable that the arrangement member (307) is provided with a semi-adhesive sheet on the groove surface in contact with the optical fiber core wire (201).

  Moreover, as shown in FIG. 4, the 2nd accommodation groove | channel (402) which can accommodate an arrangement | sequence member (307) may be provided in the back surface side of the optical fiber holder (401).

  Next, a method for collectively connecting optical fibers using the optical fiber holder and the array member of the present invention will be described. Specifically, a method of collectively connecting four optical fiber cores having an outer diameter of 0.5 mm and four optical fiber tape cores having an outer diameter of 0.25 mm shown in FIG. explain. The optical fiber core shown in FIG. 2 has a primary coating layer (203) formed on the circumference of a bare optical fiber (202) having an outer diameter of 0.125 mm, and is identified as the primary coating layer. A colored layer is applied to give an outer diameter of 0.25 mm, and a secondary coating layer (204) is formed on the coating layer to an outer diameter of 0.5 mm.

The operation procedure of the optical fiber batch connection method using the optical fiber holder of the first embodiment will be described with reference to FIG.
(1) The secondary coating layer (204) at the end of the optical fiber core wire (201) having an outer diameter of 0.5 mm is removed one by one.
(2) Four optical fiber core wires from which the secondary coating layers at the end portions have been removed are aligned in the first array groove (104), and the lid (103b) on the first array groove side is closed. At this time, the boundary between the portion where the secondary coating layer is removed and the primary coating layer (203) is the outermost layer and the portion where the secondary coating layer (204) is the outermost layer is Alignment is performed so that the positioning groove (105) for changing the arrangement pitch is positioned closer to the first arrangement groove (104) than the inlet side (105b). In the positioning groove (105), the optical fiber core wire of the portion where the primary coating layer (203) is the outermost layer is stored so that one wire is wired in each groove, and the second array groove (106) Four pieces are assembled and arranged, and the lid (103a) is closed in a state where the four pieces are arranged at a pitch of 0.25 mm.
(3) Four primary coating layers (203) at the ends of the optical fiber cores housed in the optical fiber holder are simultaneously removed to expose the bare optical fiber (202), and the bare optical fiber Perform four mirror cuts of the line end face simultaneously.
(4) At this time, the arrangement pitch of the optical fiber cores is 0.25 mm, which is the same as the arrangement pitch of four optical fiber ribbons each having an outer diameter of 0.25 mm. Therefore, an optical fiber holder in which four optical fiber cores are arranged and another optical fiber holder in which four optical fiber tape cores are held are set in a mechanical splice or fusion splicer (not shown), and the optical fiber core Connect them together.

  As described above, using the optical fiber holder according to the first embodiment of the present invention, the arrangement pitch can be easily changed from 0.5 mm to 0.25 mm, and optical fiber cores having different diameters can be connected together. It becomes possible. Also, if the positioning groove (105) for changing the arrangement pitch is formed to have a depth greater than 0.5 mm, the optical fiber core wire can be smoothly stored in the positioning groove, and jumping out of the optical fiber core wire is suppressed. it can.

The operation procedure of the optical fiber batch connection method using the optical fiber holder of the second embodiment will be described with reference to FIGS.
(1) Four optical fiber core wires (201) having an outer diameter of 0.5 mm are aligned with the array member (307).
(2) The four secondary coating layers at the ends of the optical fiber cores arrayed and held on the array member (307) are collectively removed. At this time, after the arrangement member (307) is set in the second housing groove (402) of the optical fiber holder (401), the secondary coating layer (204) at the end of the optical fiber core wire (201) is removed at once. May be performed.
(3) Set the array member in the first storage groove (304) and close the lid (303b). At this time, the secondary coating layer is removed in the positioning groove (305), and the new optical fiber in the portion where the primary coating layer (203) is the surface is routed one by one in each groove. And the four grooves are arranged and arranged in the arrangement groove (306), and the lid body (303a) is closed in the state of being arranged at a pitch of 0.25 mm.
(4) The four primary coating layers (203) at the end of the optical fiber core housed in the optical fiber holder are simultaneously removed to expose the bare optical fiber (202). Perform four mirror cuts of the line end face simultaneously.
(5) At this time, the arrangement pitch of the optical fiber cores is 0.25 mm, which is the same as the arrangement pitch of four optical fiber ribbons each having an outer diameter of 0.25 mm. Therefore, an optical fiber holder in which four optical fiber cores are arranged and another optical fiber holder in which four optical fiber tape cores are held are set in a mechanical splice or fusion splicer (not shown), and the optical fiber core Connect them together. FIG. 7 shows a state in which four single-core wires having an outer diameter of 0.5 mm and four optical fiber ribbons each having an outer shape of 0.25 mm are connected.

  As described above, using the optical fiber holder according to the second embodiment of the present invention, the arrangement pitch can be easily changed from 0.5 mm to 0.25 mm, and optical fiber cores having different diameters can be connected together. It becomes possible. Also, if the positioning groove (105) for changing the arrangement pitch is formed to have a depth greater than 0.5 mm, the optical fiber core wire can be smoothly stored in the positioning groove, and jumping out of the optical fiber core wire is suppressed. it can. Also, by providing a semi-adhesive sheet on the groove surface of the array member (307) that contacts the optical fiber core wire (201), the optical fiber core wire that has been once set is less likely to come off and workability can be improved. . Further, when the secondary coating layer (204) at the end of the optical fiber core wire (201) arranged on the arrangement member (307) is collectively removed, even if the arrangement member (307) is small and difficult to handle, The work can be easily performed by setting the arrangement member (307) in the two storage grooves (402).

1 shows an optical fiber holder showing an embodiment of the present invention. 1 shows an optical fiber core wire used in an optical fiber holder according to the present invention. 1 shows an optical fiber holder showing an embodiment of the present invention. 1 shows an optical fiber holder showing an embodiment of the present invention. It is a figure explaining the work procedure using the optical fiber holder by this invention. It is a figure explaining the work procedure using the optical fiber holder by this invention. The mechanical splice of the state which connected the optical fiber tape core wire and the single core wire using the optical fiber holder by this invention is shown. 1 shows a prior art optical fiber holder.

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 Optical fiber holder 102 Holder main body 103 Cover body 104 1st arrangement groove 105 Positioning groove 106 which changes arrangement pitch 106 2nd arrangement groove 201 Optical fiber core wire 202 Optical fiber bare wire 203 Optical fiber core primary coating layer 204 Optical fiber core secondary coating layer 301 Optical fiber holder 302 Holder body 303 Cover body 304 First storage groove 305 Positioning groove for converting the array pitch 306 Array groove 307 Array member 401 Optical fiber holder 402 Second storage groove 701 Mechanical splice 702 Optical fiber ribbon 703 Single fiber (primary coating layer)
704 Single core wire (secondary coating layer)
800 Optical fiber holder 801 Holder body 802 Groove 803 Cover body 804 Magnet 805 Holding member 806 Optical fiber core wire

Claims (5)

  Optical fiber holder comprising a holder main body (102) having a groove for gripping the optical fiber core wire, and a lid (103) attached to the groove forming surface side of the holder main body (102) so as to be freely opened and closed 1, a first array groove (104) for aligning a plurality of optical fiber core wires in the holder body (102), and an array pitch of the optical fiber core wires in the longitudinal direction of the first array groove (104) And a second narrower width than the first array groove (104) for aligning the plurality of optical fiber cores in the longitudinal direction of the positioning groove (105). An optical fiber holder in which an array groove (106) is formed.   Optical fiber holder comprising a holder main body (302) having a groove for gripping the optical fiber core wire, and a lid (303) attached to the groove forming surface side of the holder main body (302) so as to be freely opened and closed In the holder main body (302), a first storage groove (304) for storing an array member (307) in which a plurality of optical fiber cores are arranged in the longitudinal direction of the first storage groove (304) A plurality of positioning grooves (305) for converting the arrangement pitch of the optical fiber cores and an arrangement groove (306) for aligning a plurality of optical fiber cores in the longitudinal direction of the positioning grooves (305) are formed. An optical fiber holder characterized by the above.   An array member (307) in which a plurality of optical fiber cores are arrayed on the surface opposite to the surface on which positioning grooves (305) for converting the array pitch of the optical fiber core wires of the holder main body (302) are formed. 3. The optical fiber holder according to claim 2, further comprising a second storage groove (402) for storing a second storage groove (402).   The plurality of positioning grooves (105, 305) for converting the arrangement pitch of the optical fiber cores are larger than the outer diameter of the optical fiber cores arranged in the first array grooves (104) or the array members (307). The optical fiber holder according to any one of claims 1 to 3, wherein the optical fiber holder is formed by a groove having a large depth.   An arrangement member for arranging a plurality of optical fiber cores used in the optical fiber holder according to claim 2, comprising a groove having a width corresponding to the number of optical fiber cores to be arranged, An array member, wherein a surface of the groove contacting the optical fiber core wire is formed of a semi-adhesive member.

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