JPS58102905A - Multicored optical fiber core - Google Patents
Multicored optical fiber coreInfo
- Publication number
- JPS58102905A JPS58102905A JP56201672A JP20167281A JPS58102905A JP S58102905 A JPS58102905 A JP S58102905A JP 56201672 A JP56201672 A JP 56201672A JP 20167281 A JP20167281 A JP 20167281A JP S58102905 A JPS58102905 A JP S58102905A
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- elements
- layer
- buffer
- stranded
- 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.)
- Pending
Links
- 239000013307 optical fiber Substances 0.000 title claims abstract description 25
- 239000000843 powder Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 12
- 239000010410 layer Substances 0.000 claims description 6
- 239000006223 plastic coating Substances 0.000 claims description 3
- 238000005452 bending Methods 0.000 abstract description 8
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract description 4
- 230000003287 optical effect Effects 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract description 2
- 239000000835 fiber Substances 0.000 abstract description 2
- 229920001296 polysiloxane Polymers 0.000 abstract description 2
- 239000010959 steel Substances 0.000 abstract description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Insulated Conductors (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、光ケーブル用の多心光フアイバ心線の改良に
関するものであるＯ
最近、多心光フアイバ心線としてテンションメンバのま
わりＫｌｌ数本の光７アイパ素線を継合せ、この光フア
イバ素線の一合層の外周にシリコンを充填し丸後焼付け
て断面略円形の緩衝材を形成し、この緩衝材の上にプラ
スチック被覆層を設は九ものが提案されている（％開昭
団−３２１０９号参照）ａＬかし、この構造の多心光フ
アイバ心線は光フアイバ素線とシリコン緩衝材とが書漕
してこれらの間のすべりが悪いためこの多心光フアイバ
心線に曲げが加えられると、内側にある光７アイパ素線
の曲げが緩和されずに光フアイバ素線に大きな応力が加
えられるので伝送損失が大きく、また曲げの外１１にあ
る光７アイパ素線の伸び歪みが緩和されることがなく光
フアイバ素線の寿命を短かくする欠点があった・
本発明の目的は、曲げ特性が同上し、伸び歪みを緩和し
寿命を延長することができる多心光７アイパ心線を提供
することＫめる◎
本発明の実施例を図面を参照して詳細にのぺると、図面
は本発明に係る多心光ファイバ心線１０を示し、この多
心光フアイバ心線はステンレス線の如き鋼線から成るテ
ンションメンバ１２とそＯｔわりに撚合され九複数本の
光ファイバ素＠１４とこの光ファイバ木線の一合層の外
周に設けられたパウダ緩衝材１６とこのパウダ＃術材の
上に施されたプラスチック被覆層１８とから成つている
。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the improvement of a multi-core optical fiber for optical cables. Nine methods have been proposed in which the outer periphery of the combined layer of optical fibers is filled with silicon and baked to form a cushioning material with an approximately circular cross section, and a plastic coating layer is placed on top of this cushioning material. (Refer to %Kaishodan-32109) aL However, the multi-core optical fiber with this structure has poor slippage between the optical fiber and the silicone buffer material. When bending is applied to the optical fiber core wire, the bending of the inner optical fiber wire is not relaxed and a large stress is applied to the optical fiber wire, resulting in a large transmission loss. There was a drawback that the elongation strain of the optical fiber was not alleviated and the life of the optical fiber was shortened.The purpose of the present invention is to improve the bending properties as described above, alleviate the elongation strain, and extend the life. To provide a multi-core optical fiber 10 according to the present invention, the embodiments of the present invention will be described in detail with reference to the drawings. This multi-core optical fiber core wire is twisted with a tension member 12 made of a steel wire such as a stainless steel wire, and the nine optical fiber elements @14 and the outer periphery of this single layer of optical fiber wood wire are twisted together. It consists of a powder cushioning material 16 provided and a plastic coating layer 18 applied over this powder cushioning material.
光７アイパ素線１４は光７アイパの外周にシリコン被覆
層加を有する０パウダ緩衝材１６は、光７アイパ素線の
撚合層０１１間を埋め外周を円形に整形する◎このパウ
ダとしては炭酸カルシウムその他任意Ｏ材料を用いる仁
とができる・このように、緩衝材としてパウダを用ｉる
と、光フアイバ素線１４と緩衝材とが密着することなく
両者間ですべｐが生ずるので光フプイ パ心線１０に曲
げが加わっても光７アイパ素線１４に無理なら力が加わ
ることがな一〇
本発１ｊＪＫよれば、上記のように、光７アイパ素線と
緩衝材と唸密着することなくすべ９が生ずるので多心光
フアイバ心線の曲げ特性を着しく向上し、また光フアイ
バ素線の伸び歪みが緩和されるので寿命劣化を防止する
ことができる。The Hikari 7 Eyepa wire 14 has a silicon coating layer added to the outer periphery of the Hikari 7 Eyer. The powder buffer material 16 fills between the twisted layers 011 of the Hikari 7 Eyer wire and shapes the outer periphery into a circular shape. Calcium carbonate or any other O material can be used.In this way, when powder is used as a buffer material, the optical fiber 14 and the buffer material do not come into close contact with each other, and a gap is created between them, so that light According to JK, even if bending is applied to the Hikari 7 Aipah wire 10, no force will be applied to the Hikari 7 Aipah wire 14. According to JK, as mentioned above, the Hikari 7 Aipah wire and the cushioning material are in close contact with each other. The bending characteristics of the multi-core optical fiber are significantly improved since the bending is produced without causing any damage, and since the elongation strain of the optical fiber is alleviated, deterioration of the service life can be prevented.
図面は本発明に係る多心光７アイパ心線の横断面図であ
る・The drawing is a cross-sectional view of a multi-core optical 7-iper fiber wire according to the present invention.
Claims (1)
イパ素線とこの光ファイバ素＠Ｏ撚合層の外周に充填さ
れ九パウダ緩衝材と前記パウダ緩衝材の上に施され九プ
ラスチック被覆層とから成っていることを特徴とする多
心光ファイバ心＠０A plurality of optical fiber elements twisted around a tension member, a powder buffer material filled around the outer periphery of the optical fiber element@O twisted layer, and a plastic coating layer applied on the powder buffer material. A multi-core optical fiber core @0 characterized by consisting of
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56201672A JPS58102905A (en) | 1981-12-16 | 1981-12-16 | Multicored optical fiber core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56201672A JPS58102905A (en) | 1981-12-16 | 1981-12-16 | Multicored optical fiber core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58102905A true JPS58102905A (en) | 1983-06-18 |
Family
ID=16444980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56201672A Pending JPS58102905A (en) | 1981-12-16 | 1981-12-16 | Multicored optical fiber core |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58102905A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52138944A (en) * | 1976-05-15 | 1977-11-19 | Sumitomo Electric Ind Ltd | Optical cable |
-
1981
- 1981-12-16 JP JP56201672A patent/JPS58102905A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52138944A (en) * | 1976-05-15 | 1977-11-19 | Sumitomo Electric Ind Ltd | Optical cable |
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