JPS63762B2 - - Google Patents
Info
- Publication number
- JPS63762B2 JPS63762B2 JP57182782A JP18278282A JPS63762B2 JP S63762 B2 JPS63762 B2 JP S63762B2 JP 57182782 A JP57182782 A JP 57182782A JP 18278282 A JP18278282 A JP 18278282A JP S63762 B2 JPS63762 B2 JP S63762B2
- Authority
- JP
- Japan
- Prior art keywords
- connection
- optical fiber
- extra
- storage body
- semi
- 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 49
- 239000012779 reinforcing material Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 description 13
- 239000000835 fiber Substances 0.000 description 6
- 238000005452 bending Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007500 overflow downdraw method Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000004804 winding Methods 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
- G02B6/4439—Auxiliary devices
- G02B6/444—Systems or boxes with surplus lengths
- G02B6/4441—Boxes
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Description
【発明の詳細な説明】
この発明は、海底光フアイバケーブルの光フア
イバ接続部における光フアイバ接続余長の収納方
法および装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for storing excess optical fiber connection length in an optical fiber connection section of a submarine optical fiber cable.
海底ケーブルにおける光フアイバは、光を伝送
する媒体が石英系ガラス等で形成されているの
で、これらを接続するときは、ケーブルと心線間
の伸縮ずれの吸収、再接続、修理等に対処するた
め、および心線の接続作業がケーブルの接続部よ
り離れたところで行う必要性のため、光フアイバ
の接続部余長は一般の導電体を心線とするものよ
り長くとる必要がある。 Optical fibers in submarine cables are made of silica glass, etc. as the medium for transmitting light, so when connecting these, it is necessary to take measures such as absorbing expansion/contraction misalignment between the cable and core wire, reconnecting, repairing, etc. Because of this, and because it is necessary to perform the cable connection work at a distance from the cable connection part, the extra length of the optical fiber connection part needs to be longer than that of an optical fiber whose core wire is made of a general conductor.
したがつて、海底光フアイバケーブルでは、接
続余長の最小曲げ半径を維持しながら、耐圧容器
の中で光フアイバの接続余長をどのように収納す
るかという問題が発生する。 Therefore, in submarine optical fiber cables, a problem arises as to how to store the extra connection length of the optical fiber in the pressure container while maintaining the minimum bending radius for the extra connection length.
第１図は従来の海底光フアイバケーブルの接続
余長を収納する方法の一例を示すもので、海底光
フアイバケーブルＡ，Ｂのそれぞれの耐圧管１，
１′から引き出された光フアイバ２，２′を接続
し、その上を接続補強材（スリーブ等）により補
強して補強部３を形成し、その接続部両端を円筒
状接続部収納体４の両側壁５，５′に固定し、フ
アイバ余長６，６′をそれぞれ余長収納体７，
７′にフアイバ曲げ径が支障のない限り小さくな
るように巻回し、さらに余長収納体７，７′の側
壁８，８′を挿通して余裕部９，９′を設けてい
た。 Figure 1 shows an example of a conventional method for accommodating the extra connection length of submarine optical fiber cables.
The optical fibers 2 and 2' drawn out from 1' are connected, the top thereof is reinforced with a connection reinforcing material (sleeve, etc.) to form a reinforcement part 3, and both ends of the connection part are connected to the cylindrical connection part storage body 4. It is fixed to both side walls 5, 5', and the extra fiber lengths 6, 6' are stored in extra length storage bodies 7, 5', respectively.
7', the fiber is wound so that the fiber bending diameter is as small as possible without any hindrance, and extra length storage bodies 7, 7' are inserted through side walls 8, 8' to provide extra portions 9, 9'.
上記余裕部９，９′は海底光フアイバケーブル
Ａ，Ｂにおいて高張力が加わつたとき、光フアイ
バに張力が加わらないように余裕を持たせたもの
である。 The allowances 9 and 9' are provided to prevent tension from being applied to the optical fibers when high tension is applied to the submarine optical fiber cables A and B.
なお、１０は前記フアイバ接続部、余長部およ
び余裕部を包覆する接続部耐圧管であり、図示し
ないが光フアイバ２，２′は通常複数本引き出さ
れている。 Incidentally, reference numeral 10 denotes a connection part pressure-resistant tube that covers the fiber connection part, extra length part, and allowance part, and although not shown, a plurality of optical fibers 2, 2' are usually pulled out.
ところで上記したような接続方法では、円筒状
接続部収納体４の両側にそれぞれ余長収納体７，
７′および余裕部９，９′を設けているので、接続
部の余長は500mmにも達する。 By the way, in the above connection method, there are extra length storage bodies 7, on both sides of the cylindrical connection part storage body 4, respectively.
7' and extra parts 9, 9', the extra length of the connecting part reaches 500 mm.
そのため、接続部を含む近辺のケーブルの曲げ
特性が悪くなり、ケーブルの敷設および巻取りに
支障が生じる。 As a result, the bending characteristics of the cable in the vicinity of the connection portion deteriorate, causing problems in laying and winding the cable.
そこで、本出願人は、先に上記の欠点を解消す
るため、光フアイバの余長収納体が短くなるよう
な収納方法を提案した（特願昭56−142206号）。 Therefore, in order to eliminate the above-mentioned drawbacks, the applicant of the present invention first proposed a method of storing optical fibers in which the extra length storage body is shortened (Japanese Patent Application No. 142,206/1982).
上記出願の光フアイバ余長収納方法は、第２図
に示すように円筒状の共通収納体１１の側壁１
２，１２′に円弧形曲率規定板１３，１３′を設
け、前記側壁１２，１２′にフアイバ挿通孔を開
孔し、また、前記円弧形曲率規定板１３，１３′
と側壁１２，１２′の結合部にフアイバ挿通用の
切欠１５，１５′を設けたものを使用する。 The optical fiber surplus length storage method of the above application is based on the side wall 1 of the cylindrical common storage body 11 as shown in FIG.
2, 12' are provided with arc-shaped curvature defining plates 13, 13', and fiber insertion holes are formed in the side walls 12, 12'.
In this case, cutouts 15, 15' for inserting the fibers are provided at the joints of the side walls 12, 12'.
このような共通収納体１１を使用すると、一方
から挿入された海底光フアイバケーブルＡの光フ
アイバ１７は、接続部耐圧管１０の中で矢印ａ→
ｂ→ｃ→ｄ→ｅ→ｆ→ｇで示すような経路となる
ように配置され、接続部１６の点で他方の海底光
フアイバケーブルＢから引き出された光フアイバ
（図示しないが、光フアイバ１７と同様に共通収
納体１１の反対方向から同様な経路で配置されて
いる）と接続される。 When such a common storage body 11 is used, the optical fiber 17 of the submarine optical fiber cable A inserted from one side is moved in the direction of the arrow a → in the connection pressure tube 10.
The optical fiber (not shown) is arranged so as to form a path as shown by b → c → d → e → f → g, and is pulled out from the other submarine optical fiber cable B at the connection point 16 (optical fiber 17 (which are arranged along a similar route from the opposite direction of the common storage body 11).
この出願の発明は、第１図の接続方法と比較し
て共通収納体１１の全長が短くなり、それだけ接
続部耐圧管１０の全長を短くすることができる。 In the invention of this application, the total length of the common storage body 11 is shortened compared to the connection method shown in FIG. 1, and the total length of the connection portion pressure-resistant tube 10 can be shortened accordingly.
しかしながら、この接続方法では共通収納体１
１の形状が複雑であり、その部品の加工費が高く
なるとともに、接続する場合の作業性も複雑とな
る。 However, with this connection method, the common storage unit 1
1 has a complicated shape, which increases the processing cost of the parts and also complicates the workability when connecting them.
この発明は、かかる実状にかんがみてなされた
もので、さらに改良された光フアイバ接続余長収
納方法およびその装置を提供するものである。以
下、この発明の光フアイバ接続余長収納方法を添
付した図面に基づいて説明する。 The present invention has been made in view of the above-mentioned circumstances, and it is an object of the present invention to provide a further improved optical fiber connection surplus length storage method and apparatus. DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a method for storing an optical fiber connection surplus length according to the present invention will be explained based on the attached drawings.
第３図はこの発明の光フアイバ接続余長収納方
法に使用する接続余長収納体を斜視図で示したも
ので、接続余長収納体２１は円筒状の、例えば金
属、または合成樹脂等を２分割した半円筒２２
ａ，２２ｂから構成され、一方の半円筒２２ａに
は、光フアイバ２０ａ，２０ｂが挿通される開孔
部２３，２４が設けてあり、該開孔部２３，２４
から円周面に沿つて内周から外周に向かつて円弧
状となつているテーパ状の溝２５，２６を切欠い
たものである。このテーパ状の溝は開孔端から半
円筒の円周に沿つて滑らかなテーパ面で形成さ
れ、その曲率は半円筒の円周曲率とほぼ同一とさ
れている。また、前記半円筒２２ａ，２２ｂの中
央部には、一点鎖線で示すように後述する光フア
イバ接続部のスリーブを埋設して固定する凹溝２
７を数個所設けるようにする。 FIG. 3 is a perspective view showing a connection excess length storage body 21 used in the optical fiber connection surplus storage method of the present invention. Half cylinder 22 divided into two parts
one half-cylinder 22a is provided with openings 23, 24 through which the optical fibers 20a, 20b are inserted;
Tapered grooves 25 and 26 are cut out from the circumferential surface and are arcuate from the inner circumference to the outer circumference. This tapered groove is formed as a smooth tapered surface along the circumference of the semi-cylinder from the open end, and its curvature is approximately the same as the circumferential curvature of the semi-cylinder. Further, in the center of the semi-cylindrical cylinders 22a and 22b, as shown by the dashed line, a groove 2 is provided in which a sleeve for an optical fiber connection portion, which will be described later, is embedded and fixed.
7 should be provided in several places.
続いて、この発明の光フアイバ接続余長収納方
法について説明する。 Next, a method for storing the optical fiber connection surplus length according to the present invention will be explained.
第４図ａ，ｂは、第３図の接続余長収納体２１
に接続すべき光フアイバ２０ａ，２０ｂを対向す
る側面入口から挿通し、前記開孔部２３，２４か
ら引き出した後で接続し、接続補強材（スリーブ
等）２８で補強した場合を示したもので、まず、
接続余長収納体２１の半円筒２２ａ，２２ｂを分
離した状態で前記開孔部２３，２４に光フアイバ
２０ａ，２０ｂを臨ませ、半円筒２２ａ，２２ｂ
を合体して円筒状とする。 Figures 4a and 4b show the connection extra length storage body 21 in Figure 3.
This figure shows the case where the optical fibers 20a and 20b to be connected are inserted through the opposite side entrances, connected after being pulled out from the openings 23 and 24, and reinforced with a connection reinforcing material (sleeve, etc.) 28. ,first,
With the semicircular cylinders 22a, 22b of the connection extra length storage body 21 separated, the optical fibers 20a, 20b are exposed to the openings 23, 24, and the semicylindrical cylinders 22a, 22b are opened.
are combined to form a cylindrical shape.
この際、前記光フアイバ２０ａ，２０ｂは合体
によつて構成された持続余長収納体２１の内周面
にらせん状に収納される。次に前記光フアイバ２
０ａ，２０ｂを接続に必要な長さだけ開孔部２
３，２４から引き出し融着法などで接続し、接続
部を接続補強材２８により補強し、その接続余長
を前記接続余長収納体２１の外周面に巻回し最後
に接続補強材２８にて補強された接続部を接続余
長収納体２１の凹溝２７に嵌合する。 At this time, the optical fibers 20a and 20b are housed in a spiral shape on the inner peripheral surface of the continuous length storage body 21 formed by combining the optical fibers 20a and 20b. Next, the optical fiber 2
0a, 20b for the length necessary to connect the hole 2
3 and 24 and are connected by a fusion method or the like, the connecting portion is reinforced with a connection reinforcing material 28, the extra connection length is wound around the outer peripheral surface of the extra connection length storage body 21, and finally the connection reinforcing material 28 is used. The reinforced connection portion is fitted into the groove 27 of the extra connection length storage body 21.
なお、上述の余長収納方法は１本の光フアイバ
について説明したが、複数の光フアイバを接続す
るときも同様に接続余長収納体２１に収容される
ことはいうまでもない。 In addition, although the above-mentioned surplus length storage method was explained about one optical fiber, it goes without saying that when connecting a plurality of optical fibers, they are similarly stored in the connection surplus length storage body 21.
第５図ａ，ｂはこの発明の接続余長収納体２１
を、海底光フアイバケーブルの接続部耐圧管に収
納した断面形状を示したもので、第５図ａはＡ側
ケーブルの光フアイバ２０ａの余長収納状態を示
し、第５図ｂはＢ側ケーブルの光フアイバ２０ｂ
の余長収納状態を示している。これらの図におい
て、３０ａ，３０ｂは接続すべき光フアイバの集
合体、３１はケーブル引留部、３３は接続部耐圧
管で、他の符合は第３図と同一部分を示す。 Figures 5a and 5b show connection extra length storage body 21 of this invention.
Fig. 5a shows the state in which the extra length of the optical fiber 20a of the A-side cable is stored, and Fig. 5b shows the B-side cable. optical fiber 20b
This shows the storage state of the extra length. In these figures, 30a and 30b are a collection of optical fibers to be connected, 31 is a cable retaining portion, 33 is a connection pressure tube, and other reference numerals indicate the same parts as in FIG. 3.
接続余長収納体２１は、左右のケーブル引留部
３１とオーバラツプされた状態で係止され、一方
の挿入口から挿入されている光フアイバ２０ａ
は、前記接続余長収納体２１の内周面をらせん状
に進み、遠い方の開孔部２４から接続余長収納体
２１の外表面に引き出され、かつ、テーパ状の溝
２６に沿つてほぼ一周した後、接続補強材２８の
部分で接続されていることが分かる。また、他方
の入口から挿入されている光フアイバ２０ｂも同
様の経路をたどり、接続補強材２８の部分で接続
される。 The extra connection length storage body 21 is locked in an overlapping state with the left and right cable retaining parts 31, and the optical fiber 20a inserted from one insertion opening is locked.
travels spirally along the inner circumferential surface of the extra connection length storage body 21, is pulled out from the farthest opening 24 to the outer surface of the connection extra length storage body 21, and extends along the tapered groove 26. It can be seen that the connection is made at the connection reinforcing member 28 after almost one turn. Further, the optical fiber 20b inserted from the other entrance follows the same route and is connected at the connection reinforcing material 28.
したがつて、光フアイバの曲げ半径は、最も小
さいところで接続余長収納体２１の内径より小さ
くなることはなく、かつその内周面をらせん状に
利用しているので余長も十分とることができる。 Therefore, the bending radius of the optical fiber is never smaller than the inner diameter of the connection extra length storage body 21 at its smallest point, and since the inner circumferential surface is used in a spiral shape, there is enough extra length. can.
なお、半円筒２２ａに形成する開孔部２３，２
４は、もう一方の半円筒２２ｂにも設け、この開
孔部２３，２４が、両者を合体したときに所定の
大きさになるようにしてもよい。 Note that the openings 23, 2 formed in the semi-cylindrical cylinder 22a
4 may also be provided in the other half cylinder 22b so that the openings 23 and 24 have a predetermined size when the two are combined.
以上説明したように、この発明の光フアイバ接
続余長収納方法は、２つの開孔部を設けた円筒状
の接続余長収納体の内周面に沿つてらせん状に光
フアイバの接続余長部を収納しているので、従来
の接続余長収納方法に比べてその全長を短くする
ことができ、かつ、２分割された半円筒の円周曲
率とほぼ同一の曲率で構成されているテーパ溝に
よつて光フアイバの接続余長が引き出されるよう
にしているので、光フアイバの引き出し口付近の
曲率が所定の範囲に規定され、伝送特性が劣化し
ない。また凹溝によつて接続補強材が半円筒の外
表面から沈み込んだ状態で保持されるため、この
点で光フアイバの余長が交叉したときも大きな側
圧を受けることがないという効果がある。 As explained above, in the optical fiber connection surplus length storage method of the present invention, the connection length of the optical fiber is spirally disposed along the inner peripheral surface of the cylindrical surplus connection length storage body provided with two openings. The taper has a circumferential curvature that is almost the same as the circumferential curvature of the half-cylinder divided into two. Since the extra connection length of the optical fiber is drawn out by the groove, the curvature near the outlet of the optical fiber is defined within a predetermined range, and the transmission characteristics do not deteriorate. In addition, since the connecting reinforcing material is held in a depressed state from the outer surface of the semi-cylindrical cylinder by the concave groove, this has the effect that it will not be subjected to large lateral pressure even when the extra length of the optical fiber crosses. .
第１図は従来の接続余長収納体の一例を示す断
面図、第２図は第１図の接続余長収納体を改良し
た斜視図、第３図はこの発明の接続余長収納体の
斜視図、第４図ａ，ｂは光フアイバ接続余長の収
納方法を示す説明図、第５図ａ，ｂはこの発明の
接続余長収納体を耐圧容器に収容したときの一部
断面図である。
図中、２０ａ，２０ｂは光フアイバ、２１は接
続余長収納体、２２ａ，２２ｂは半円筒、２３，
２４は開孔部、２５，２６はテーパ状の溝を示
す。
FIG. 1 is a sectional view showing an example of a conventional connection extra length storage body, FIG. 2 is a perspective view of an improved connection excess length storage body of FIG. 1, and FIG. 3 is a connection surplus storage body of the present invention. A perspective view, FIGS. 4a and 4b are explanatory diagrams showing a method for storing the extra optical fiber connection length, and FIGS. 5a and 5b are partial cross-sectional views when the extra connection length storage body of the present invention is housed in a pressure container. It is. In the figure, 20a and 20b are optical fibers, 21 is a connection extra length storage body, 22a and 22b are semi-cylindrical cylinders, 23,
24 is an opening, and 25 and 26 are tapered grooves.
Claims (1)
した２個の半円筒と、前記２個の半円筒を合体し
たときの接合面に沿つて前記半円筒の一方の側に
形成されている２個の開孔部と、前記２個の開孔
部から前記半円筒の外周面に沿つて形成されてい
る凹条の第１及び第２のテーパ溝と、前記第１、
第２のテーパ溝の中間部分に位置し、光フアイバ
の接続補強材を埋設するための凹溝からなり、前
記凹条の第１、第２のテーパ溝は接続された光フ
アイバの余長が前記開孔部から外部に引き出され
たとき、前記半円筒の円周曲率とほぼ同一の曲率
となるように形成されていることを特徴とする光
フアイバ接続余長収納装置。1. Two semi-cylinders obtained by dividing a cylindrical connection extra length storage body into two in the length direction, and one side of the semi-cylinder formed along the joint surface when the two semi-cylinders are combined. two apertures, first and second tapered grooves of grooves formed along the outer circumferential surface of the semi-cylindrical cylinder from the two apertures;
The groove is located in the middle of the second tapered groove and is used to bury the optical fiber connection reinforcing material. An optical fiber connection surplus length storage device, characterized in that the optical fiber connection surplus length storage device is formed so that the circumferential curvature is substantially the same as the circumferential curvature of the semi-cylindrical cylinder when the device is pulled out from the opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18278282A JPS5972412A (en) | 1982-10-20 | 1982-10-20 | Method and device for storing surplus length of optical fiber connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18278282A JPS5972412A (en) | 1982-10-20 | 1982-10-20 | Method and device for storing surplus length of optical fiber connection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5972412A JPS5972412A (en) | 1984-04-24 |
| JPS63762B2 true JPS63762B2 (en) | 1988-01-08 |
Family
ID=16124319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18278282A Granted JPS5972412A (en) | 1982-10-20 | 1982-10-20 | Method and device for storing surplus length of optical fiber connection |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5972412A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3193198A1 (en) * | 2016-01-13 | 2017-07-19 | Siemens Aktiengesellschaft | Cable management device and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55100504A (en) * | 1979-01-26 | 1980-07-31 | Nippon Telegr & Teleph Corp <Ntt> | Surplus length treating method of optical fiber |
| JPS55127507A (en) * | 1979-03-26 | 1980-10-02 | Nippon Telegr & Teleph Corp <Ntt> | Treating method for extra core length of optical fiber cable |
| JPS57154212A (en) * | 1981-03-18 | 1982-09-24 | Nippon Telegr & Teleph Corp <Ntt> | Supporting method of optical fiber connecting part |
-
1982
- 1982-10-20 JP JP18278282A patent/JPS5972412A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55100504A (en) * | 1979-01-26 | 1980-07-31 | Nippon Telegr & Teleph Corp <Ntt> | Surplus length treating method of optical fiber |
| JPS55127507A (en) * | 1979-03-26 | 1980-10-02 | Nippon Telegr & Teleph Corp <Ntt> | Treating method for extra core length of optical fiber cable |
| JPS57154212A (en) * | 1981-03-18 | 1982-09-24 | Nippon Telegr & Teleph Corp <Ntt> | Supporting method of optical fiber connecting part |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5972412A (en) | 1984-04-24 |
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