JPH02278206A - Branching method for optical fiber cable and optical fiber cable - Google Patents

Branching method for optical fiber cable and optical fiber cable

Info

Publication number
JPH02278206A
JPH02278206A JP1100618A JP10061889A JPH02278206A JP H02278206 A JPH02278206 A JP H02278206A JP 1100618 A JP1100618 A JP 1100618A JP 10061889 A JP10061889 A JP 10061889A JP H02278206 A JPH02278206 A JP H02278206A
Authority
JP
Japan
Prior art keywords
optical fiber
point
cable
branch
length
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.)
Granted
Application number
JP1100618A
Other languages
Japanese (ja)
Other versions
JP2830032B2 (en
Inventor
Hisashi Tanji
久 丹治
Kenji Kobayashi
賢次 小林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP1100618A priority Critical patent/JP2830032B2/en
Publication of JPH02278206A publication Critical patent/JPH02278206A/en
Application granted granted Critical
Publication of JP2830032B2 publication Critical patent/JP2830032B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401Optical cables
    • G02B6/4429Means specially adapted for strengthening or protecting the cables
    • G02B6/443Protective covering
    • G02B6/4431Protective covering with provision in the protective covering, e.g. weak line, for gaining access to one or more fibres, e.g. for branching or tapping
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4439Auxiliary devices
    • G02B6/4471Terminating devices ; Cable clamps
    • G02B6/4472Manifolds
    • G02B6/4475Manifolds with provision for lateral branching

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Coupling Of Light Guides (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

PURPOSE:To execute the laying and the maintenance at a low cost by eliminating a cable sheath of a branch point, drawing out an optical fiber to be allowed to branch so as to have sufficient length for the connection, and making length for eliminating the cable sheath in the branch point shorter than length by which the optical fiber to be allowed to branch is drawn out. CONSTITUTION:An optical fiber 1 in an optical fiber cable 2 is allowed to branch at an A point, and in the A point, and in a B point separated by about 1m from the A point, a cable sheath 4 is eliminated. At the B point, the optical fiber 1 to be allowed to branch is cut, and from the A point, its optical fiber is drawn out, and its optical fiber is connected to a prescribed optical fiber 51 of a branch cable 5 by a usual fusion splicing or a connector attachment, etc., and closed up tightly and protected by a closure 7. A part 8 from which the cable sheath 4 is eliminated in the B point is closed up tightly and brought to protection processing by tape widning or a miniature box, etc. In such a way, the laying and the connection work are simplified, and an economical effect is obtained.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、光ファイバケーブルの分岐方法に関する。よ
り詳細には、複数の光ファイバを具備する光ファイバケ
ーブルの一部の光ファイバを、布設後に分岐する場合の
分岐方法に関する。また、本発明は、上記の分岐方法に
適した光ファイバケーブルにも関する。
DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for branching optical fiber cables. More specifically, the present invention relates to a branching method for branching some optical fibers of an optical fiber cable including a plurality of optical fibers after installation. The present invention also relates to an optical fiber cable suitable for the above branching method.

従来の技術 布設された光ファイバケーブルの中途で、ケーブル中の
一部の光ファイバを分岐(所謂後分岐)させるためには
、従来、分岐点において分岐させる光ファイバを切断し
て分岐先の光ファイバケーブルへ接続していた。その際
、光ファイバの接続に必要な余長を見込んだ長さ(通常
数十cm)に亘ってケーブルシースを除去して、接続す
る光ファイバを引き出していた。
Conventional technology In order to branch some of the optical fibers in the optical fiber cable (so-called post-branching) in the middle of an installed optical fiber cable, conventionally, the optical fibers to be branched are cut at the branch point and the optical fibers at the branch destination are separated. It was connected to a fiber cable. At that time, the cable sheath is removed over a length (usually several tens of centimeters) that takes into account the extra length required for connecting the optical fibers, and the optical fibers to be connected are pulled out.

また、あらかじめ分岐点の位置がわかっており、ある程
度まとまった数の光ファイバを分岐する場合には、その
分岐点まで主ケーブルを布設し、分岐点において複数の
分岐ケーブルに接続していた。
Furthermore, when the location of a branch point is known in advance and a certain number of optical fibers are to be branched, the main cable is laid to the branch point and connected to a plurality of branch cables at the branch point.

発明が解決しようとする課題 上述の従来の光ケーブルの分岐方法により、ケーブルの
中途で光ファイバを分岐すると、分岐部でケーブルシー
ス数十cm除去しなければならない。
Problems to be Solved by the Invention When optical fibers are branched in the middle of the cable using the conventional optical cable branching method described above, several tens of centimeters of the cable sheath must be removed at the branching point.

分岐部を密閉、保護するクロージャの小型化のためには
、ケーブルシースを除去する長さをできるだけ短くする
ことが望ましいが、光ファイバを接続するには前記数十
cmという長さでも十分ではなかった。そのため、例え
ば、分岐させる光ファイバを融着接続する場合には、短
余長接続のための特殊な融着接続機を使用する必要があ
った。また、接続が失敗した場合には、最初に取り出し
たファイバの長さでは不足することもあり、ケーブルシ
ースをさらに除去しなければならない。それに伴い、分
岐接続の処理部もさらに長くなる恐れがあった。
In order to downsize the closure that seals and protects the branch, it is desirable to make the length of the cable sheath removed as short as possible, but even the tens of centimeters in length is not sufficient for connecting optical fibers. Ta. Therefore, for example, when fusion splicing optical fibers to be branched, it is necessary to use a special fusion splicer for short extra length splicing. Additionally, if the connection fails, the length of fiber initially taken out may not be sufficient and the cable sheath must be further removed. Accordingly, there is a fear that the branch connection processing section will also become longer.

また、分岐点が予め決まっている場合には、内蔵された
光ファイバを有効に活用し、上記のような後分岐の煩わ
しさを避ける意味で、主ケーブルの長さを分岐点までに
して、分岐点で複数の分岐ケーブルに接続している。即
ち、分岐ケーブルのうちの1本(l系統)には、主ケー
ブルをそのまま引き込めるにもかかわらず、分岐点で光
ファイバを接続している。従って、伝送路としての性能
は低下し、布設および保守のコストが余計にかかってい
た。
In addition, if the branch point is determined in advance, in order to effectively utilize the built-in optical fiber and avoid the trouble of post-branching as described above, the length of the main cable should be limited to the branch point. Connecting to multiple branch cables at a branch point. That is, an optical fiber is connected to one of the branch cables (l system) at the branch point, even though the main cable can be drawn in as is. Therefore, the performance as a transmission line deteriorates, and the cost of installation and maintenance increases.

課題を解決するための手段 本発明に従うと、複数の光ファイバを具備する光ファイ
バケーブル中の光ファイバの一部を布設後に分岐させる
方法において、分岐点のケーブルシースを除去し、分岐
させる光ファイバが接続に十分な長さを有するよう引き
出し、前記分岐点においてケーブルシースを除去する長
さが前記分岐させる光ファイバを引き出した長さより短
いことを特徴とする光ファイバケーブルの分岐方法が提
供される。
Means for Solving the Problems According to the present invention, in a method for branching some of the optical fibers in an optical fiber cable having a plurality of optical fibers after installation, the cable sheath at the branch point is removed and the optical fibers to be branched are There is provided a method for branching an optical fiber cable, characterized in that the optical fiber is pulled out to have a sufficient length for connection, and the length at which the cable sheath is removed at the branching point is shorter than the length at which the optical fiber to be branched is pulled out. .

また、本発明では、複数の光ファイバを具備し、布設後
に前記光ファイバの一部が分岐される光ファイバケーブ
ルにおいて、分岐される光ファイバが、分岐点で接続に
十分な長さを有する程度に分岐点までの距離よりも長く
なっていることを特徴とする光ファイバケーブルが提供
される。
Further, in the present invention, in an optical fiber cable that includes a plurality of optical fibers and in which some of the optical fibers are branched after installation, the branched optical fibers have a length sufficient for connection at the branch point. Provided is an optical fiber cable characterized in that the length of the cable is longer than the distance to the branch point.

作用 本発明の方法は、光ファイバケーブルの後分岐において
、分岐点でケーブルシースを除去する長さをできるだけ
短くし、このケーブルシースを除去した部分から接続に
十分な長さの光ファイバを引き出すところにその主要な
特徴がある。
Operation The method of the present invention is to reduce the length of the cable sheath removed at the branch point in the rear branch of an optical fiber cable, and to draw out an optical fiber of sufficient length for connection from the part where the cable sheath has been removed. has its main characteristics.

本発明の方法に従えば、分岐させる光ファイバを接続す
るための余長を十分数ることができ、短余長接続のため
の特殊な融着接続機を必要としなくなる。また、本発明
の方法の一態様では分岐点と切断点との2箇所でケーブ
ルシースを除去するが、その場合でもそれぞれの位置で
ケーブルシースを除去する長さは数cm以内である。従
って、接続部の保護も行ない易く、クロージャを小型化
することができる。
According to the method of the present invention, a sufficient number of extra lengths can be provided for splicing the optical fibers to be branched, and a special fusion splicer for splicing short extra lengths is not required. Further, in one embodiment of the method of the present invention, the cable sheath is removed at two locations, the branch point and the cutting point, but even in that case, the length of the cable sheath removed at each location is within several cm. Therefore, the connection portion can be easily protected and the closure can be made smaller.

本発明の光ファイバケーブルは、分岐させる光ファイバ
が、分岐点で接続に十分な長さを有する程度に分岐点ま
での距離よりも長くなっているところにその主要な特徴
がある。本発明の光ファイバケーブルを用いることによ
り、本発明の光ファイバケーブルの分岐方法はより簡単
に実現できる。
The main feature of the optical fiber cable of the present invention is that the optical fiber to be branched is longer than the distance to the branch point to the extent that it has a sufficient length for connection at the branch point. By using the optical fiber cable of the present invention, the optical fiber cable branching method of the present invention can be more easily realized.

即ち、本発明の光ファイバケーブルを用いると、上記の
ように分岐点より離れた位置で、光ファイバを切断する
必要はなくなる。従って、ケーブルシースも分岐点での
み除去するだけでよく、布設および保守のコストがより
低減される。
That is, when the optical fiber cable of the present invention is used, there is no need to cut the optical fiber at a position away from the branch point as described above. Therefore, the cable sheath also only needs to be removed at branch points, further reducing installation and maintenance costs.

本発明の方法に使用する光ファイバケーブルおよび本発
明の光ファイバケーブルは、ケーブルコアを溝付スペー
サを用いたような開放型とし、内部の光ファイバまたは
光フアイバユニットがケーブル軸方向に滑り易い構造と
することが好ましい。
The optical fiber cable used in the method of the present invention and the optical fiber cable of the present invention have an open type cable core using a grooved spacer, and have a structure in which the internal optical fiber or optical fiber unit can easily slide in the cable axial direction. It is preferable that

これは、上記本発明の方法で光ファイバケーブルを分岐
する際に、光ファイバケーブル内で光ファイバまたは分
岐の単位となる光フアイバユニットを引き抜き易くする
ためである。
This is to make it easier to pull out the optical fiber or the optical fiber unit, which is the unit of branching, from within the optical fiber cable when branching the optical fiber cable using the method of the present invention.

以下、本発明を実施例により、さらに詳しく説明するが
、以下の開示は本発明の単なる実施例に過ぎず、本発明
の技術的範囲をなんら制限するものではない。
EXAMPLES Hereinafter, the present invention will be explained in more detail with reference to Examples, but the following disclosure is merely an example of the present invention and does not limit the technical scope of the present invention in any way.

実施例 第1図(a)およびら)に、本発明の光ファイバケーブ
ルの分岐方法の模式図を示す。第1図(a)および(b
)では、本発明の方法により、光ファイバケーブル2中
の光ファイバ1をA点で分岐させ、図のA点から左側で
2系統のケーブルとする様子を示している。以下、手順
を説明する。
Embodiment FIGS. 1(a) and 1(a) show schematic diagrams of the optical fiber cable branching method of the present invention. Figure 1 (a) and (b)
) shows how the optical fiber 1 in the optical fiber cable 2 is branched at point A using the method of the present invention to form two cable systems on the left side of point A in the figure. The procedure will be explained below.

まず、A点およびA点から図の左側に約1m離れている
B点においてケーブルシース4を除去する。A点からB
点までの距離は、分岐させる光ファイバ1の接続余長と
なるので、必要に応じてこの長さを変更する。B点で分
岐させる光ファイバ1を切断し、A点よりその光ファイ
バを引き抜く。
First, the cable sheath 4 is removed at point A and point B, which is approximately 1 m away from point A to the left in the figure. from point A to B
The distance to the point is the extra connection length of the optical fiber 1 to be branched, so change this length as necessary. The optical fiber 1 to be branched is cut at point B, and the optical fiber is pulled out from point A.

引き抜いた光ファイバは通常の融着接続またはコネクタ
付は等により、接続点6で分岐ケーブル5の所定の光フ
ァイバ51と接続され、クロージャ7で密閉、保護され
る。B点のケーブルシース4を除去した部分8は、テー
プ巻あるいは小型の箱等により密閉、保護処理を行なう
The pulled-out optical fiber is connected to a predetermined optical fiber 51 of the branch cable 5 at a connection point 6 by ordinary fusion splicing or connector attachment, and is sealed and protected by a closure 7. The portion 8 from which the cable sheath 4 at point B has been removed is sealed and protected by wrapping with tape or using a small box.

第2図(a)およびら)は、本発明の光ファイバケーブ
ル22を用いて、本発明の分岐方法を実現した様子を示
す模式図である。
FIGS. 2(a) and 2(a) are schematic diagrams showing how the branching method of the present invention is realized using the optical fiber cable 22 of the present invention.

本発明の光ファイバケーブル22は、分岐させる光ファ
イバlの長さが、分岐点Aまでの距離よりも、A点で十
分な接続全長を採れる分だけ長くなっている。従って、
光ファイバ1を分岐させるには、A点でのみケーブルシ
ース4を除去し、光ファイバ1を引き出して、分岐ケー
ブル5の光ファイバ51と接続すればよい。接続後、A
点のケーブルシースを除去した部分をクロージャ7で保
護する点は同様である。
In the optical fiber cable 22 of the present invention, the length of the optical fiber l to be branched is longer than the distance to the branch point A by an amount that allows a sufficient total connection length at the point A. Therefore,
To branch the optical fiber 1, it is sufficient to remove the cable sheath 4 only at point A, pull out the optical fiber 1, and connect it to the optical fiber 51 of the branch cable 5. After connection, A
The point where the cable sheath has been removed is protected by the closure 7 is similar.

また、本発明の光ファイバケーブルを使用する場合でも
、分岐させる光ファイバの長さの調整が困難な場合には
、分岐させる光ファイバの長さを、分岐点までの布設ル
ート長より十分長くし、第1図(a)および(b)に図
示したように2箇所でケーブルシースを除去する方法を
適用してもよい。この場合、分岐点より先に残る若干量
の光ファイバは無駄になるが、ケーブル全長にわたって
光ファイバが収容されている場合よりも光ファイバを有
効に利用できる。また、主ケーブルを分岐点で切断し、
分岐する系統ごとに複数の分岐ケーブルに接続する従来
の方法よりも、接続数が減らせることは言うまでもない
Furthermore, even when using the optical fiber cable of the present invention, if it is difficult to adjust the length of the optical fiber to be branched, the length of the optical fiber to be branched should be made sufficiently longer than the length of the installation route to the branching point. , a method of removing the cable sheath at two locations as illustrated in FIGS. 1(a) and 1(b) may be applied. In this case, the small amount of optical fiber remaining beyond the branch point is wasted, but the optical fiber can be used more effectively than when the optical fiber is accommodated over the entire length of the cable. Also, cut the main cable at the branch point,
It goes without saying that the number of connections can be reduced compared to the conventional method of connecting multiple branch cables to each branching system.

第3図および第4図に、本発明の光フアイバ分岐方法を
実現するのに好ましい光ファイバケーブル構造の断面図
を示す。第3図に示した光ファイバケーブルは、パウダ
ーまたはオイルなどの潤滑剤11が塗布された溝付スペ
ーサ10の溝13内に光フアイバ心線9が収納され、ケ
ーブルシース4で全体が被覆された構成である。溝付ス
ペーサ10の中心にはテンションメンバ12が配置され
、光フアイバ心線9に過大な張力がかからないよう補強
している。本光ファイバケーブルは、溝付スペーサ10
の溝13内に潤滑剤11が塗布されているので光フアイ
バ心線9がケーブル軸方向に滑り易くなっている。本光
ファイバケーブルにおいて、ひとつの溝13内に収容さ
れる光ファイバは複数心でもよく、また分岐の単位とな
るユニットでもよい。
3 and 4 show cross-sectional views of a preferred optical fiber cable structure for realizing the optical fiber branching method of the present invention. In the optical fiber cable shown in FIG. 3, an optical fiber core 9 is housed in a groove 13 of a grooved spacer 10 coated with a lubricant 11 such as powder or oil, and the entire fiber is covered with a cable sheath 4. It is the composition. A tension member 12 is arranged at the center of the grooved spacer 10 to reinforce the optical fiber core 9 so that excessive tension is not applied thereto. This optical fiber cable has a grooved spacer 10
Since the lubricant 11 is applied to the inside of the groove 13, the optical fiber core 9 easily slides in the cable axial direction. In this optical fiber cable, a plurality of optical fibers may be accommodated in one groove 13, or a unit serving as a unit of branching may be used.

第4図に示す光ファイバケーブルは、第3図の光フアイ
バ心線9に代えて、複数の光フアイバテープ14を溝1
3内に収納した例である。この光ファイバケーブルでは
、溝13と光フアイバテープ14との問および光ファイ
バテープ14相互間に潤滑剤が塗布されている。
The optical fiber cable shown in FIG. 4 has a plurality of optical fiber tapes 14 arranged in grooves in place of the optical fiber cores 9 in FIG.
This is an example where it is stored in 3. In this optical fiber cable, a lubricant is applied between the groove 13 and the optical fiber tape 14 and between the optical fiber tapes 14.

なお、上記の光ファイバケーブルにおいて、潤滑剤は必
ずしも必要ではなく、光ファイバ等がケーブル軸方向に
十分滑り易いケーブル構造であればよい。
In addition, in the above-mentioned optical fiber cable, a lubricant is not necessarily necessary, and it is sufficient if the cable structure allows the optical fiber etc. to slide sufficiently in the cable axial direction.

発明の詳細 な説明したように、本発明の光ファイバケーブルの分岐
方法に従うと、分岐させる光ファイバに十分な接続余長
を与えることができるので、短余長接続の特殊な技術が
不必要となる。また、分岐点でケーブルシースを除去す
る長さも減少するので、分岐点における保護処理、以後
の保守、維持も容易になり、クロージャ等も小型化でき
る。
As described in detail, by following the optical fiber cable branching method of the present invention, sufficient extra connection length can be given to the optical fibers to be branched, so special techniques for short extra length connections are not required. Become. Further, since the length of the cable sheath to be removed at the branch point is also reduced, protection processing at the branch point, subsequent maintenance, and upkeep become easier, and closures and the like can also be made smaller.

さらに、従来の方法と異なり、少なくともl系統は主ケ
ーブルをそのまま布設することが可能である。従らて、
布設、接続作業が簡単となり、経済的効果も大きい。
Furthermore, unlike conventional methods, it is possible to lay the main cables as they are for at least one system. Accordingly,
The installation and connection work becomes easy, and the economical effects are also large.

本発明の光ファイバケーブルを併用することにより、1
分岐点に対しケーブルシースを除去する部分が1箇所と
なり、さらに作業性が向上する。
By using the optical fiber cable of the present invention, 1
There is only one cable sheath removed at the branch point, further improving work efficiency.

【図面の簡単な説明】[Brief explanation of drawings]

第1図(a)および(b)は、本発明の光ファイバケー
ブルの分岐方法を模式的に示した模式図であり、第2図
(a)および(b)は、本発明の光ファイバケーブルを
併用して、本発明の方法を実施した場合を示した模式図
であり、 第3図および第4図は、本発明による分岐方法を実現す
るのに好ましい光ファイバケーブル構造の断面図である
。 〔主な参照番号〕 1・・分岐光ファイバ、 2.22・・光ファイバケーブル、 4・・ケーブルシース、5・・分岐ケーブル、6・・分
岐される光ファイバの接続点、7・・クロージャ、 8・・シース除去保護処理部、 9・・光フアイバ心線、10・・溝付スペーサ、11・
・潤滑剤、12・・テンションメンバ、13・・溝、1
4・・光フアイバテープ第1図 特許出願人 住友電気工業株式会社
FIGS. 1(a) and (b) are schematic diagrams schematically showing the branching method of the optical fiber cable of the present invention, and FIGS. 2(a) and (b) are diagrams showing the optical fiber cable of the present invention. FIG. 3 is a schematic diagram showing a case in which the method of the present invention is carried out in conjunction with the branching method according to the present invention. FIGS. . [Main reference numbers] 1. Branch optical fiber, 2. 22. Optical fiber cable, 4. Cable sheath, 5. Branch cable, 6. Connection point of optical fiber to be branched, 7. Closure. , 8... Sheath removal protection processing section, 9... Optical fiber core wire, 10... Grooved spacer, 11...
・Lubricant, 12...Tension member, 13...Groove, 1
4. Optical fiber tape Figure 1 Patent applicant Sumitomo Electric Industries, Ltd.

Claims (3)

【特許請求の範囲】[Claims] (1)複数の光ファイバを具備する光ファイバケーブル
中の光ファイバの一部を布設後に分岐させる方法におい
て、分岐点のケーブルシースを除去し、分岐させる光フ
ァイバが接続に十分な長さを有するよう引き出し、前記
分岐点においてケーブルシースを除去する長さが前記分
岐させる光ファイバを引き出した長さより短いことを特
徴とする光ファイバケーブルの分岐方法。
(1) In a method of branching some of the optical fibers in an optical fiber cable comprising multiple optical fibers after installation, the cable sheath at the branch point is removed and the optical fibers to be branched have sufficient length for connection. A method for branching an optical fiber cable, characterized in that the length of the cable sheath removed at the branching point is shorter than the length of the optical fiber to be branched.
(2)前記分岐点より離れた部分で分岐させる光ファイ
バを切断し、前記分岐点と前記切断点との間のケーブル
シースを除去せずに前記分岐点の前記ケーブルシースを
除去した部分から分岐させる光ファイバを引き出すこと
を特徴とする請求項(1)に記載の光ファイバケーブル
の分岐方法。
(2) Cut the optical fiber to be branched at a part away from the branch point, and branch from the part where the cable sheath is removed at the branch point without removing the cable sheath between the branch point and the cutting point. 2. The method for branching an optical fiber cable according to claim 1, wherein the optical fiber is pulled out.
(3)複数の光ファイバを具備し、布設後に前記光ファ
イバの一部が分岐される光ファイバケーブルにおいて、
分岐される光ファイバが、分岐点で接続に十分な長さを
有する程度に分岐点までの距離よりも長くなっているこ
とを特徴とする光ファイバケーブル。
(3) In an optical fiber cable that includes a plurality of optical fibers and in which some of the optical fibers are branched after installation,
An optical fiber cable characterized in that the optical fiber to be branched is longer than the distance to the branch point to such an extent that the branch point has a sufficient length for connection.
JP1100618A 1989-04-20 1989-04-20 Optical fiber cable branching method and optical fiber cable Expired - Lifetime JP2830032B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1100618A JP2830032B2 (en) 1989-04-20 1989-04-20 Optical fiber cable branching method and optical fiber cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1100618A JP2830032B2 (en) 1989-04-20 1989-04-20 Optical fiber cable branching method and optical fiber cable

Publications (2)

Publication Number Publication Date
JPH02278206A true JPH02278206A (en) 1990-11-14
JP2830032B2 JP2830032B2 (en) 1998-12-02

Family

ID=14278828

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1100618A Expired - Lifetime JP2830032B2 (en) 1989-04-20 1989-04-20 Optical fiber cable branching method and optical fiber cable

Country Status (1)

Country Link
JP (1) JP2830032B2 (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0584600A1 (en) * 1992-08-13 1994-03-02 RXS Schrumpftechnik-Garnituren GmbH Method for tapping individual optical fibers from an uncut optical cable and device used for this method
WO1997041476A1 (en) * 1996-04-29 1997-11-06 Mcdonnell Douglas Corporation Fiber optic trunkline for an aircraft with breakout boxes there along
EP0798584A3 (en) * 1996-03-30 1997-12-10 REHAU AG + Co Method of making cable branch-offs
EP1207413A1 (en) * 2000-11-16 2002-05-22 Asahi Glass Co., Ltd. Branching method for an optical fiber cable
WO2006044080A1 (en) * 2004-10-13 2006-04-27 Corning Cable Systems Llc Pre-connectorized fiber optic distribution cable having multifiber connector
WO2006052355A1 (en) * 2004-11-03 2006-05-18 Corning Cable Systems Llc Pre-connectorized fiber optic distribution cable having overmolded access location
WO2007103439A2 (en) * 2006-03-09 2007-09-13 Adc Telecommunications, Inc. Mid-span breakout with helical fiber routing
WO2007138107A1 (en) * 2006-06-01 2007-12-06 Acome Societe Cooperative De Production, Societe Anonyme, A Capital Variable Optic cable for connection to a general distribution network and related connection method
EP2120076A1 (en) * 2008-05-13 2009-11-18 Draka comteq B.V. Method for the installation of an optical fibre telecommunication cable
JP2012063407A (en) * 2010-09-14 2012-03-29 Fujikura Ltd Optical fiber reconnecting method of optical fiber cable
EP3067726A1 (en) * 2006-05-11 2016-09-14 Corning Optical Communications LLC Fiber optic distribution cables and structures therefor
US9494764B2 (en) 2006-05-11 2016-11-15 Corning Optical Communications LLC Fiber optic distribution cables and structures therefor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56152013U (en) * 1980-04-14 1981-11-14
JPS58207018A (en) * 1982-05-27 1983-12-02 Dainichi Nippon Cables Ltd Method for branching photoconductor of optical cable

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56152013U (en) * 1980-04-14 1981-11-14
JPS58207018A (en) * 1982-05-27 1983-12-02 Dainichi Nippon Cables Ltd Method for branching photoconductor of optical cable

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0584600A1 (en) * 1992-08-13 1994-03-02 RXS Schrumpftechnik-Garnituren GmbH Method for tapping individual optical fibers from an uncut optical cable and device used for this method
EP0798584A3 (en) * 1996-03-30 1997-12-10 REHAU AG + Co Method of making cable branch-offs
WO1997041476A1 (en) * 1996-04-29 1997-11-06 Mcdonnell Douglas Corporation Fiber optic trunkline for an aircraft with breakout boxes there along
US5971623A (en) * 1996-04-29 1999-10-26 Mcdonnell Douglas Corporation Fiber optic trunkline for an aircraft with breakout boxes therealong
EP1207413A1 (en) * 2000-11-16 2002-05-22 Asahi Glass Co., Ltd. Branching method for an optical fiber cable
WO2006044080A1 (en) * 2004-10-13 2006-04-27 Corning Cable Systems Llc Pre-connectorized fiber optic distribution cable having multifiber connector
WO2006052355A1 (en) * 2004-11-03 2006-05-18 Corning Cable Systems Llc Pre-connectorized fiber optic distribution cable having overmolded access location
WO2007103439A3 (en) * 2006-03-09 2007-12-06 Adc Telecommunications Inc Mid-span breakout with helical fiber routing
WO2007103439A2 (en) * 2006-03-09 2007-09-13 Adc Telecommunications, Inc. Mid-span breakout with helical fiber routing
EP3067726A1 (en) * 2006-05-11 2016-09-14 Corning Optical Communications LLC Fiber optic distribution cables and structures therefor
US9494764B2 (en) 2006-05-11 2016-11-15 Corning Optical Communications LLC Fiber optic distribution cables and structures therefor
WO2007138107A1 (en) * 2006-06-01 2007-12-06 Acome Societe Cooperative De Production, Societe Anonyme, A Capital Variable Optic cable for connection to a general distribution network and related connection method
FR2901890A1 (en) * 2006-06-01 2007-12-07 Acome Soc Coop Travailleurs OPTICAL CABLE FOR CONNECTING TO A GENERAL DISTRIBUTION NETWORK AND CONNECTING METHOD THEREFOR
EP2120076A1 (en) * 2008-05-13 2009-11-18 Draka comteq B.V. Method for the installation of an optical fibre telecommunication cable
FR2931254A1 (en) * 2008-05-13 2009-11-20 Draka Comteq France Sa Sa METHOD FOR INSTALLING A FIBER OPTIC TELECOMMUNICATION CABLE
JP2012063407A (en) * 2010-09-14 2012-03-29 Fujikura Ltd Optical fiber reconnecting method of optical fiber cable

Also Published As

Publication number Publication date
JP2830032B2 (en) 1998-12-02

Similar Documents

Publication Publication Date Title
JP2830032B2 (en) Optical fiber cable branching method and optical fiber cable
US6493500B1 (en) Method for mid-span branching of optical fiber cable
WO1997041476A1 (en) Fiber optic trunkline for an aircraft with breakout boxes there along
JP3662303B2 (en) Branch wiring method for optical fiber cable
JP3548907B2 (en) Intermediate branch connection method for optical fiber cable
KR100289620B1 (en) Intermediate branch connection method of optical fiber cable
JP3026408B2 (en) Intermediate connection method of optical fiber cable
JP4142984B2 (en) Optical fiber wiring method
JPH041528Y2 (en)
TAKEDA et al. Ultra-High-Density Optical Cable with Rollable Ribbons for Simple Installation and Cost Reduction
JP2579835B2 (en) Twisted optical fiber cable
JPS58207018A (en) Method for branching photoconductor of optical cable
JP2006343579A (en) Closure for connecting optical cable
JP2004054148A (en) Closure for branches cable connection
JPS62153809A (en) Branchable optical fiber cable and its laying method
JP3698519B2 (en) Optical cable branching / passing cabinet
JP3108335B2 (en) Branch connection method of optical fiber cable
JPH01310305A (en) Formation of post branching juncture for sz slot optical fiber cable
JP2523599Y2 (en) Optical fiber guide device
JPS6322285B2 (en)
CZ291484B6 (en) Method of making cable branches
JP3079045B2 (en) Cable junction box structure
JP2505516B2 (en) Optical fiber cable branch connection method
JP2004037970A (en) Optical fiber cable, and method for branching optical fiber cable
JP2012088391A (en) Optical cable branching method and branch structure