JPH09230158A - Arraigning structure of optical fiber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To expand the arranging pitch of bare fibers and to increase the side of a V-groove block as the bare fibers of the respective coated fiber ribbons paralleled along the front surface of the Vgroove block are arranged on the V-groove block. SOLUTION: This arranging structure has plural pieces of the coated fiber ribbons 12a, 12b having arranging ends 11 parallel arranged with plural pieces of the bare fibers 10 led and exposed with terminals and the V-groove block 15 which parallel and arrange the bare fibers 10 of both coated fiber ribbons 12a, 12b on the same plane by aligning and positioning the bare fibers by the V-grooves 14 formed on the front surface 13. The bare fibers 10 of the arranging ends 11 of the other coated fiber ribbons 12b are inserted between the bare fibers 10 of the arranging ends 11 of the other coated fiber ribbon 12a and the arranging ends 11 are superposed on each other. In addition, these fibers are arranged and held on the same plane by the V-groove block 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical fiber array structure in which single-core optical fibers exposed at the ends of a multi-core optical fiber tape are arrayed on the same plane.

[0002]

2. Description of the Related Art FIG. 2 is a perspective view showing a conventional arrangement structure of optical fibers. In the figure, reference numeral 1 is an optical fiber ribbon (hereinafter referred to as "tape ribbon"), and 2 is a V groove stand. The tape core wire 1 has a structure in which a plurality of optical fibers 3 are arranged in parallel and integrally fixed with a resin coating 4. Note that V
When positioning and arranging the multi-fiber optical fibers on the groove base 2, since it is inferior in workability to deal with each single core, the positioning is generally performed collectively for each tape core wire. On the upper surface 5 of the V-groove base 2, a plurality of optical fibers 3 that are exposed by exposing the ends of the tape core wire 1 are placed so that each optical fiber 3 is aligned and aligned in parallel. The groove 6 is formed.

[0003]

By the way, in the above-described optical fiber array structure, when a plurality of tape core wires 1 are targeted, the tapes arranged in parallel along the upper surface 5 of the V-groove base. Since the optical fibers 3 of the core wire 1 are arranged on the V-groove base 2, there is a problem that the lateral width of the V-groove base 2 becomes large. For example, when the optical fibers 3 of φ125 μm arranged on the tape core wire 1 at a pitch of 250 μm are juxtaposed with each other by the V groove 6 formed on the upper surface 5 of the V groove base at a pitch of 127 μm, the optical fiber 3 has a V groove 61. The empty V-grooves 6 are interposed between the optical fibers 3 which are inserted every other one and are adjacent to each other. In order to eliminate the empty V-grooves 6, it is sufficient to make the arrangement pitch of the tape core wires 1 fine, but an extreme decrease in the pitch causes a change in the mechanical strength of the tape core wires 1, and the like. Furthermore, the problem of increased manufacturing cost also occurs. Therefore, since there is a limit to the reduction of the arrangement pitch of the optical fibers 3 in the tape core wire 1, the arrangement pitch of the optical fibers 3 in the V groove base 2 is reduced even if there is a margin in the formation pitch of the V grooves 6. It has become difficult to increase the array density.

The present invention has been made in view of the above-mentioned problems, and an optical fiber arrangement structure capable of improving the arrangement density of single-core optical fibers exposed at the ends of a plurality of multi-fiber optical fiber tapes. It is intended to provide.

[0005]

In order to solve the above-mentioned problems, the present invention provides an optical fiber array structure in which single-core optical fibers exposed at the ends of a plurality of multi-core optical fiber tapes are arrayed on the same plane. In, a multi-core optical fiber tape having an array end formed by arranging a plurality of single-core optical fibers exposed in a terminal in parallel and a single-core optical fiber of each multi-core optical fiber tape are arranged in parallel. An array holding means for holding on the same plane, and inserting the single-core optical fibers of the array ends of another multi-core optical fiber tape in parallel between the single-core optical fibers of the array ends. Overlapping parts,
The means for solving the above-mentioned problems is that the single-core optical fibers of each of these multi-core optical fiber tapes are arranged and held on the same plane by the array holding means.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of an optical fiber array structure of the present invention will be described below with reference to FIG. In FIG. 1, the arrangement structure of the optical fibers according to the present embodiment has a structure in which a plurality of optical fibers 10 which are exposed by peeling off the coating of the terminal are exposed.
Two 8-core tape core wires 12a and 12b having comb-teeth-shaped array end portions 11 formed by arranging (single-core optical fibers) in parallel.
(Multi-core optical fiber tape) and these fiber ribbons 12
The optical fibers 10 of a and 12b are provided with a V-groove base 15 for aligning and positioning the optical fibers 10 by the V-grooves 14 formed on the upper surface 13 and arranging the optical fibers 10 in parallel on the same plane. Alternating, one tape core 1
The optical fiber 10 of the array end 11 of the other tape core wire 12b is inserted along the optical fiber 10 of the array end 11 of 2a so that the array ends 11 are overlapped and pressed from above. In this way, both tape cores 12a, 1
The optical fibers 10 of 2b are arranged and held on the same plane by a V groove base 15.

The end of one of the tape core wires 12a has a V groove 14
The optical fiber 10 is arranged at a position where the optical axis 10 coincides with the centering axis of the tape, and the end of the other tape core 12b on the coating side is arranged above the one tape core 12a (upper side in FIG. 1) so as to be in this state. Both tape cores 12a and 12b are V-groove base 1
It is integrally fixed to 5 by an adhesive 16. Although not particularly shown, the both tape core wires 12a and 12b may be collectively pressed onto the V groove base 15 from above by a clamp plate or the like. The front end faces of the optical fibers 10 of both the tape core wires 12a and 12b are arranged on the V-groove upper surface 13 and then cut and polished by a diamond saw or the like, so that the polishing surfaces are aligned on the same plane. A cutting groove 17 is formed on the upper surface 13 of the V groove base by cutting.

The operation and effect of this embodiment will be described below. According to the optical fiber array structure of the present embodiment, the optical fibers 10 of different tape cores 12a and 12b are provided.
Are arranged alternately on the upper surface 13 of the V-groove, the arrangement pitch of the optical fibers 10 on the upper surface 13 of the V-groove can be made smaller than the arrangement pitch on the ribbon cores 12a and 12b. For example, when the optical fibers 10 having a diameter of 125 μm are arranged on the V-groove base upper surface 13 on which the V-grooves 14 are formed at a pitch of 127 μm, the tape core wires 12a and 12b having the arrangement ends 11 arranged in parallel at a pitch of 250 μm are arranged. , The optical fibers 10 of both tape core wires 12a and 12b are V
They are juxtaposed on the upper surface 13 of the groove stand with almost no space. At this time, the two tape cores 12a and 12b are horizontally shifted so that their own optical fibers 10 are located between the optical fibers 10 of the opposite tape cores 12a and 12b.

Therefore, according to the arrangement structure of the optical fibers, the optical fibers 10 of the plurality of tape core wires 12a and 12b can be arranged in high density on the upper surface 13 of the V groove base, so that the V groove base 15 can be formed. Can be miniaturized.

The array holding means may be other than the V-groove base. It is also possible to arrange three or more single-core optical fibers of a multi-core optical fiber tape in one array holding means. The arrangement pitch of the single-core optical fibers in the multi-core optical fiber tape may not be the same between the multi-core optical fiber tapes.

[0011]

As described above, according to the optical fiber array structure of the present invention, a multi-core optical fiber having an array end portion in which a plurality of single-core optical fibers exposed at a terminal are arrayed in parallel is provided. A fiber tape and an array holding means for arranging the single-core optical fibers of each multi-core optical fiber tape in parallel and holding the same on the same plane. The single-core optical fibers at the array ends of the multi-fiber optical fiber tapes are inserted and the array ends are overlapped, and the single-fiber optical fibers of each of these multi-fiber optical fiber tapes are arrayed and held on the same plane by the array holding means By doing
Since the arrangement pitch of the single-core fibers in the arrangement holding means can be made smaller than the arrangement pitch of the multi-core optical fiber tape, it becomes possible to arrange the single-core optical fibers on the same plane at a high density. It has an excellent effect that the means can be downsized.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of an optical fiber array structure of the present invention.

FIG. 2 is a perspective view showing a conventional arrangement structure of optical fibers.

[Explanation of symbols]

10 ... Single-core optical fiber (bare fiber), 11 ... Array end, 12a ... Multi-core optical fiber tape (tape core wire), 1
2b ... Multi-core optical fiber tape (tape core wire), 15 ... Array holding means (V groove stand).

Claims (1)

[Claims] 1. A plurality of multi-fiber optical fiber tapes (12)
a, 12b) single-core optical fiber (1
0) in the optical fiber array structure in which they are arrayed on the same plane, a multi-core optical fiber tape having an array end (11) in which a plurality of single-core optical fibers exposed at a terminal are arrayed in parallel, Arrangement holding means (1) for arranging the single-core optical fibers of each multi-core optical fiber tape in parallel and holding them on the same plane.
5) and inserting the single-core optical fibers of the array ends of another multi-core optical fiber tape in parallel between the single-core optical fibers of the array ends and overlapping the array ends. An array structure of optical fibers, wherein single core optical fibers of each multi-core optical fiber tape are arrayed and held on the same plane by array holding means.