JPS6323688Y2 - - Google Patents
Info
- Publication number
- JPS6323688Y2 JPS6323688Y2 JP1982029094U JP2909482U JPS6323688Y2 JP S6323688 Y2 JPS6323688 Y2 JP S6323688Y2 JP 1982029094 U JP1982029094 U JP 1982029094U JP 2909482 U JP2909482 U JP 2909482U JP S6323688 Y2 JPS6323688 Y2 JP S6323688Y2
- Authority
- JP
- Japan
- Prior art keywords
- tape
- optical fiber
- optical
- thickness
- plastic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000013307 optical fiber Substances 0.000 claims description 29
- 239000002344 surface layer Substances 0.000 claims description 14
- 230000003287 optical effect Effects 0.000 claims description 13
- 239000006223 plastic coating Substances 0.000 claims description 12
- 239000010410 layer Substances 0.000 claims description 11
- 239000004033 plastic Substances 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000011241 protective layer Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
Landscapes
- Insulated Conductors (AREA)
Description
本考案は、テープ状をした光テープ心線の改良
に関するものである。
従来の光テープ心線は、第１図に示すように複
数本の光フアイバ素線１が隣接相互間で接触され
て横一列に配設され、その配列集合体の外周にプ
ラスチツク被覆２が施された構造であつた。各光
フアイバ素線１は、光フアイバ１Ａの外周に１次
被覆からなる保護層１Ｂ又は１次被覆と緩衝層か
らなる保護層１Ｂが設けられた構造となつてい
る。
しかしながらこのような構造では、プラスチツ
ク被覆２が隣接光フアイバ素線１間のＶ溝３にも
喰い込んで各光フアイバ素線１に融着されている
ので、コネクタ接続時等におけるプラスチツク被
覆２の皮むきがしにくい欠点があつた。特に、光
フアイバ素線１は従来の導線よりなる絶縁心線に
比べて非常に細く、しかも折れ易いので、損傷さ
せずに皮むきをすることは、非常に困難であつ
た。
本考案の目的は、プラスチツク被覆の皮むきを
容易に行える光テープ心線を提供するにある。
本考案は、複数本の光フアイバ素線が隣接相互
間で接触されて横一列に配設され、その配列集合
体の外周にプラスチツク被覆が施され、前記プラ
スチツク被覆はテープ厚み方向の両面に存在する
テープ面層部と、テープ幅方向の両端に存在する
テープエツジ層部とから成つている光テープ心線
において、前記プラスチツク被覆テープ面層部の
内面は隣接する前記光フアイバ素線間のＶ溝に喰
い込まない平坦面に形成され、且つ前記テープエ
ツジ層部の厚さが前記テープ面層部の厚さよりも
薄く形成されていることを特徴とするものであ
る。
以下本考案の実施例を図面を参照して詳細に説
明する。第２図に示すように本実施例の光テープ
心線は、複数本の光フアイバ素線１が隣接相互間
で接触されて横一列に配設されている。各光フア
イバ素線１は光フアイバ１Ａの外周に１次被覆又
は１次被覆と緩衝層からなる保護層１Ｂが設けら
れた構造になつている。これら光フアイバ素線１
の配列集合体の外周にはナイロン等よりなるプラ
スチツク被覆２が施されて、外形が薄形のテープ
状をなすようにされている。テープ厚み方向の両
面におけるプラスチツク被覆テープ面層部２Ａの
肉厚t″は、各光フアイバ素線１の配列形状が外表
面に現われずに外表面が平坦となる程度の最小限
の肉厚に選定されている。また、テープ面層部２
Ａの内面は、隣接する光フアイバ素線１間のＶ溝
３に喰い込まない平坦面に形成されている。テー
プ幅方向の両端におけるプラスチツク被覆２のテ
ープエツジ層部２Ｂの肉厚t′は、テープ面層部２
Ｂの肉厚t″より更に薄い肉厚に選定されている。
このようにプラスチツク被覆テープ面層部２Ａ
の内面を、隣接光フアイバ素線１間のＶ溝３に喰
い込まない平坦面にすると、テープ面層部２Ａが
各光フアイバ素線１に完全に融着されることがな
くなり、プラスチツク被覆２の皮むきを容易に行
うことができ、コネクタ等との接続作業が容易に
なる。また、テープ面層部２Ａの肉厚を、各光フ
アイバ素線の配列形状が外表面に現われずに外表
面が平坦となる肉厚としたので、側圧特性の面で
側圧の分散効果が得られ、側圧特性を改善するこ
とができる。更に、テープエツジ層部２Ｂの肉厚
The present invention relates to an improvement of a tape-shaped optical tape core. As shown in FIG. 1, a conventional optical tape core consists of a plurality of optical fibers 1 arranged horizontally in a line with adjacent fibers 1 in contact with each other, and a plastic coating 2 is applied around the outer periphery of the array assembly. It had a similar structure. Each optical fiber strand 1 has a structure in which a protective layer 1B consisting of a primary coating or a protective layer 1B consisting of a primary coating and a buffer layer is provided around the outer periphery of the optical fiber 1A. However, in such a structure, the plastic sheath 2 also cuts into the V-groove 3 between adjacent optical fiber strands 1 and is fused to each optical fiber strand 1, so the plastic sheath 2 is fused to each optical fiber strand 1 during connector connection. The problem was that it was difficult to peel. In particular, since the optical fiber wire 1 is much thinner than conventional insulated conductor wires and is more easily broken, it has been extremely difficult to strip it without damaging it. An object of the present invention is to provide an optical tape core whose plastic coating can be easily peeled off. In the present invention, a plurality of optical fiber strands are arranged horizontally in a line with adjacent ones in contact with each other, and a plastic coating is applied to the outer periphery of the array assembly, and the plastic coating is present on both sides of the tape in the thickness direction. In the optical tape core, the inner surface of the plastic-covered tape surface layer is formed into a V-groove between the adjacent optical fiber strands. The tape edge layer is formed on a flat surface that does not dig into the tape, and the thickness of the tape edge layer is thinner than the thickness of the tape surface layer. Embodiments of the present invention will be described in detail below with reference to the drawings. As shown in FIG. 2, in the optical tape core of this embodiment, a plurality of optical fibers 1 are arranged in a horizontal line with adjacent ones in contact with each other. Each optical fiber strand 1 has a structure in which a primary coating or a protective layer 1B consisting of a primary coating and a buffer layer is provided around the outer periphery of the optical fiber 1A. These optical fiber strands 1
A plastic coating 2 made of nylon or the like is applied to the outer periphery of the array assembly, so that the outer shape is thin and tape-like. The wall thickness t'' of the plastic-covered tape surface layer portion 2A on both sides in the tape thickness direction is set to the minimum thickness such that the arrangement shape of each optical fiber strand 1 does not appear on the outer surface and the outer surface is flat. Also, the tape surface layer part 2
The inner surface of A is formed as a flat surface that does not dig into the V-groove 3 between adjacent optical fiber strands 1. The thickness t' of the tape edge layer portion 2B of the plastic coating 2 at both ends in the tape width direction is equal to the thickness t' of the tape surface layer portion 2.
The wall thickness is selected to be even thinner than the wall thickness t'' of B. In this way, the plastic-covered tape surface layer portion 2A
By making the inner surface of the optical fiber strand a flat surface that does not cut into the V-groove 3 between adjacent optical fiber strands 1, the tape surface layer portion 2A is not completely fused to each optical fiber strand 1, and the plastic coating 2 This makes it easy to peel off the skin, making it easier to connect connectors, etc. In addition, since the thickness of the tape surface layer portion 2A is set to such a thickness that the arrangement shape of each optical fiber strand does not appear on the outer surface and the outer surface is flat, a lateral pressure dispersion effect can be obtained in terms of lateral pressure characteristics. lateral pressure characteristics can be improved. Furthermore, the thickness of the tape edge layer portion 2B
【表】
以上説明したように本考案に係る光テープ心線
においては、プラスチツク被覆テープ面層部の内
面が隣接光フアイバ素線間のＶ溝に喰い込まない
平坦面としたので、プラスチツク被覆の各光フア
イバ素線に対する結合力が弱まり、非常に細くて
しかも損傷され易い光フアイバ素線の表面からプ
ラスチツク被覆を容易に皮むきすることができ
る。また、本考案ではテープエツジ層部の厚さを
テープ面層部の厚さよりも薄くしたので、低温時
のプラスチツク被覆の収縮による影響がテープ幅
方向の両端の光フアイバ素線に大きく作用するこ
とがなく、両端の光フアイバ素線のマイクロベン
ドを防止でき、伝送損失の増大を抑制でき、中間
の他の光フアイバ素線と同様の伝送特性にするこ
とができる。従つて、本考案によれば、光テープ
心線においても全素線の伝送特性の安定化が図
れ、且つこの光テープ心線とコネクタ等との接続
作業を容易に行うことができる。[Table] As explained above, in the optical tape core according to the present invention, the inner surface of the plastic-coated tape surface layer is a flat surface that does not dig into the V-groove between adjacent optical fiber strands. The bonding force to each optical fiber strand is weakened, and the plastic coating can be easily peeled off from the surface of the very thin and easily damaged optical fiber strand. In addition, in the present invention, the thickness of the tape edge layer is made thinner than the thickness of the tape surface layer, so that the shrinkage of the plastic coating at low temperatures will not have a large effect on the optical fiber strands at both ends in the tape width direction. Therefore, it is possible to prevent microbending of the optical fiber strands at both ends, suppress an increase in transmission loss, and achieve the same transmission characteristics as other optical fiber strands in the middle. Therefore, according to the present invention, it is possible to stabilize the transmission characteristics of all the strands even in the optical tape core, and to easily connect the optical tape core with a connector or the like.
第１図は従来の光テープ心線の横断面図、第２
図は本考案に係る光テープ心線の一実施例を示す
横断面図である。
１……光フアイバ素線、１Ａ……光フアイバ、
１Ｂ……保護層、２……プラスチツク被覆、２Ａ
……テープ面層部、２Ｂ……テープエツジ層部。
Figure 1 is a cross-sectional view of a conventional optical tape core;
The figure is a cross-sectional view showing an embodiment of the optical tape core according to the present invention. 1...Optical fiber wire, 1A...Optical fiber,
1B...Protective layer, 2...Plastic coating, 2A
...Tape surface layer part, 2B...Tape edge layer part.
Claims (1)
れて横一列に配設され、その配列集合体の外周に
プラスチツク被覆が施され、前記プラスチツク被
覆はテープ厚み方向の両面に存在するテープ面層
部と、テープ幅方向の両端に存在するテープエツ
ジ層部とから成つている光テープ心線において、
前記プラスチツク被覆テープ面層部の内面は隣接
する前記光フアイバ素線間のＶ溝に喰い込まない
平坦面に形成され、且つ前記テープエツジ層部の
厚さが前記テープ面層部の厚さよりも薄く形成さ
れていることを特徴とする光テープ心線。 A plurality of optical fiber strands are arranged horizontally in a row with adjacent ones in contact with each other, and a plastic coating is applied to the outer periphery of the array assembly, and the plastic coating is a tape surface layer that is present on both sides in the tape thickness direction. In the optical tape core wire, the optical tape consists of a tape edge layer section and a tape edge layer section existing at both ends in the tape width direction.
The inner surface of the plastic-coated tape surface layer portion is formed as a flat surface that does not dig into the V-groove between the adjacent optical fiber strands, and the thickness of the tape edge layer portion is thinner than the thickness of the tape surface layer portion. An optical tape core wire characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2909482U JPS58133106U (en) | 1982-03-02 | 1982-03-02 | Optical tape core wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2909482U JPS58133106U (en) | 1982-03-02 | 1982-03-02 | Optical tape core wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58133106U JPS58133106U (en) | 1983-09-08 |
| JPS6323688Y2 true JPS6323688Y2 (en) | 1988-06-29 |
Family
ID=30040904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2909482U Granted JPS58133106U (en) | 1982-03-02 | 1982-03-02 | Optical tape core wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58133106U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5511230A (en) * | 1978-07-10 | 1980-01-26 | Nippon Telegr & Teleph Corp <Ntt> | Flat type optical cable |
-
1982
- 1982-03-02 JP JP2909482U patent/JPS58133106U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5511230A (en) * | 1978-07-10 | 1980-01-26 | Nippon Telegr & Teleph Corp <Ntt> | Flat type optical cable |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58133106U (en) | 1983-09-08 |
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