JPH032884Y2 - - Google Patents
Info
- Publication number
- JPH032884Y2 JPH032884Y2 JP15678580U JP15678580U JPH032884Y2 JP H032884 Y2 JPH032884 Y2 JP H032884Y2 JP 15678580 U JP15678580 U JP 15678580U JP 15678580 U JP15678580 U JP 15678580U JP H032884 Y2 JPH032884 Y2 JP H032884Y2
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- pressure
- spacer
- resistant
- metal tube
- 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 37
- 229910052751 metal Inorganic materials 0.000 claims description 23
- 239000002184 metal Substances 0.000 claims description 23
- 125000006850 spacer group Chemical group 0.000 claims description 18
- 238000003466 welding Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、海底ケーブル等に内蔵される耐圧光
フアイバケーブルに関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a pressure-resistant optical fiber cable built into a submarine cable or the like.
従来の海底光フアイバケーブルにおける耐圧光
フアイバケーブルは、第１図に示すように中心抗
張力体１の周囲に複数本の光フアイバ心線２を撚
合又は集合し、その周囲に押え巻テープ３を巻回
させる光フアイバ集合体４を、縦沿え金属テープ
例えば銅、アルミニウム、鉄等のテープを溶接せ
る耐圧金属管５で覆つたものがある。この場合、
耐圧金属管の径によつては、第１図イに示すよう
に光フアイバ集合体４が耐圧金属管５の底部に接
し上部及び両側に空隙６を有する場合と、第１図
ロに示すように前記の空隙が無く光フアイバ集合
体４の全周が耐圧金属管５の内周に接している場
合とが生じる。
A pressure-resistant optical fiber cable in a conventional submarine optical fiber cable is made by twisting or gathering a plurality of optical fiber cores 2 around a central tensile strength member 1, and wrapping a pressing tape 3 around it, as shown in FIG. There is one in which the optical fiber assembly 4 to be wound is covered with a pressure-resistant metal tube 5 to which a longitudinal metal tape, such as a tape of copper, aluminum, iron, etc., can be welded. in this case,
Depending on the diameter of the pressure-resistant metal tube, the optical fiber assembly 4 may be in contact with the bottom of the pressure-resistant metal tube 5 and have a gap 6 on the top and both sides, as shown in FIG. In some cases, there is no gap and the entire circumference of the optical fiber assembly 4 is in contact with the inner circumference of the pressure-resistant metal tube 5.
上述した第１図イの場合は、縦沿え金属テープ
を溶接して耐圧金属管５を形成する際の加熱によ
つて光フアイバ心線２の被覆材、例えばナイロン
が溶接変形して、光フアイバ心線２に損傷を与え
るという問題がある。
In the case shown in FIG. 1A described above, the coating material of the optical fiber core wire 2, for example, nylon, is deformed by welding due to the heating during welding the vertical metal tape to form the pressure-resistant metal tube 5, and the optical fiber is deformed by welding. There is a problem in that the core wire 2 is damaged.
又、この場合は耐圧金属管５と光フアイバ集合
体４の間に密着力が無く、ケーブルとして強い引
張力を加えることができないという問題がある。 Further, in this case, there is a problem that there is no adhesion between the pressure-resistant metal tube 5 and the optical fiber assembly 4, and a strong tensile force cannot be applied to the cable.
上述した第１図ロの場合は、集合体被覆材６′
によつて光フアイバ集合体と耐圧金属管との密着
力は大きくなるが、耐圧金属管を溶着する際の熱
によつて集合体被覆材６′が熱膨張すると、光フ
アイバ集合体に大きな側圧が印加され、光フアイ
バの伝送損失が高くなるという問題がある。 In the case of FIG. 1B described above, the aggregate covering material 6'
This increases the adhesion between the optical fiber assembly and the pressure-resistant metal tube, but if the assembly sheathing material 6' expands due to the heat generated when welding the pressure-resistant metal tube, a large lateral pressure will be applied to the optical fiber assembly. is applied, and there is a problem that the transmission loss of the optical fiber becomes high.
本考案は、かかる問題点にかんがみてなされた
もので、光フアイバ集合体と耐圧金属管の間に長
手方向に空隙部が発生するようなスペーサを使用
して、耐圧層を形成するときの光フアイバの損傷
防止と、伝送損失の改善を行うことができるよう
な耐圧光フアイバケーブルを提供するものであ
る。 The present invention was developed in view of these problems, and uses a spacer that creates a gap in the longitudinal direction between the optical fiber assembly and the pressure-resistant metal tube to prevent light when forming the pressure-resistant layer. The present invention provides a pressure-resistant optical fiber cable that can prevent fiber damage and improve transmission loss.
光フアイバ集合体の周囲に紐状のスペーサを巻
回するか、デイスク状のスペーサを間欠的に取り
付け、その外周囲に縦沿えした金属プレートによ
つて耐圧金属管を形成するように構成する。
A cord-like spacer is wound around the optical fiber assembly, or disk-like spacers are intermittently attached, and a pressure-resistant metal tube is formed by a metal plate placed vertically around the outer periphery.
光フアイバ集合体と、その上に形成される耐圧
金属管の間の部分はスペーサ部材と、空間によつ
て占められていることになるので、耐圧金属管を
形成する際の高熱が光フアイバに損傷を与えない
ようにすることができる。又、スペーサの熱膨張
は空隙部分で吸収することができるので、光フア
イバの側圧を異状に高くすることがなくなると同
時、光フアイバ集合体と耐圧金属管の密着力も高
くすることができる。
The space between the optical fiber assembly and the pressure-resistant metal tube formed thereon is occupied by the spacer member and the space, so the high heat generated during the formation of the pressure-resistant metal tube will not reach the optical fibers. can be prevented from causing damage. Furthermore, since the thermal expansion of the spacer can be absorbed by the gap, the lateral pressure of the optical fibers will not become abnormally high, and at the same time, the adhesion between the optical fiber assembly and the pressure-resistant metal tube can be increased.
第２図イ，ロは本考案の耐圧光フアイバケーブ
ルの一部を断面とした実施例を示したもので、第
２図イは紐状のスペーサ７を使用したもの、第２
図ロはデイスク状のスペーサ８を使用したもので
ある。
Figures 2A and 2B show partially cross-sectional embodiments of the pressure-resistant optical fiber cable of the present invention.
Figure (b) uses a disk-shaped spacer 8.
本考案の耐圧光フアイバケーブルは第２図イ，
ロに明示したように、ゴム、プラスチツク等から
なる紐状、又はデイスク状のスペーサ７，８によ
つて光フアイバ集合体４の表面に空隙６をケーブ
ルの長手方向に均一に形成したので、この上から
縦沿えした金属テープを成形して耐圧金属管５′
を形成する場合、溶接熱が前記空隙６によつて光
フアイバ集合体４に伝達されるのを防止すること
ができると共に、前記スペーサ７，８の外径に対
して、耐圧金属管５′の内径が若干小さくなるよ
うに設定されているので、光フアイバ集合体４と
耐圧金属管５′の密着力を高くすることができる。 The pressure-resistant optical fiber cable of this invention is shown in Figure 2 A.
As shown in FIG. 2, the gaps 6 are uniformly formed on the surface of the optical fiber assembly 4 in the longitudinal direction of the cable by string-like or disk-like spacers 7 and 8 made of rubber, plastic, etc. A pressure-resistant metal tube 5' is formed by forming a metal tape that is stretched vertically from above.
In the case of forming a Since the inner diameter is set to be slightly smaller, the adhesion between the optical fiber assembly 4 and the pressure-resistant metal tube 5' can be increased.
又、スペーサ７，８が熱膨張したとしても、前
記空隙６によつて膨張分を吸収することができる
ので、光フアイバの伝送損失の増加を阻止するこ
とができる。 Further, even if the spacers 7 and 8 undergo thermal expansion, the expansion can be absorbed by the gap 6, so that an increase in transmission loss of the optical fiber can be prevented.
以上説明したように、この考案の光フアイバケ
ーブルは、光フアイバ集合体の外表面に、紐状又
はデイスク状のスペーサを配置し、その上から耐
圧層となる耐圧金属管を、縦沿え加工によつて形
成するようにしているので、スペーサで形成され
ている空隙部が有効に作用し、(1)光フアイバ集合
体が溶接熱によつて損傷することを防止する、(2)
空隙部がスペーサの熱膨張を吸収する、(3)耐圧金
属管と光フアイバ集合体の密着力がよくなる、と
いう数々の効果を奏することができる。
As explained above, in the optical fiber cable of this invention, a string-like or disk-like spacer is arranged on the outer surface of the optical fiber assembly, and a pressure-resistant metal tube serving as a pressure-resistant layer is placed on top of the string-like spacer and then vertically laid. Since the optical fiber assembly is formed in this manner, the void formed by the spacer effectively functions to (1) prevent the optical fiber assembly from being damaged by welding heat; (2)
A number of effects can be achieved, such as the void absorbing the thermal expansion of the spacer and (3) improving the adhesion between the pressure-resistant metal tube and the optical fiber assembly.
第１図イ，ロは従来の耐圧光フアイバケーブル
の断面図、第２図イ，ロは本考案の耐圧光フアイ
バケーブルの断面図である。
図中、１は中心抗張力体、２は光フアイバ心
線、３は押え巻テープ、４は光フアイバ集合体、
５′は耐圧溶接金属管、６はケーブル内の空隙、
７は紐状のスペーサ、８はデイスク状のスペーサ
を示す。
FIGS. 1A and 1B are cross-sectional views of a conventional pressure-resistant optical fiber cable, and FIGS. 2A and 2B are cross-sectional views of a pressure-resistant optical fiber cable according to the present invention. In the figure, 1 is a central tensile strength member, 2 is an optical fiber core, 3 is a presser tape, 4 is an optical fiber assembly,
5' is a pressure-resistant welded metal pipe, 6 is a gap in the cable,
7 represents a string-like spacer, and 8 represents a disk-like spacer.
Claims (1)
されている紐状のスペーサ、又は間欠的に配置さ
れているデイスク形のスペーサによつて、前記光
フアイバケーブル集合体の長手方向に均一な空隙
部を形成し、前記スペーサの周囲にその外径より
若干小さい内径を有する耐圧用溶接金属管を縦沿
えして被覆したことを特徴とする耐圧光フアイバ
ケーブル。 A uniform gap in the longitudinal direction of the optical fiber cable assembly is created by a string-like spacer wound around the optical fiber cable assembly or by an intermittently arranged disc-shaped spacer. 1. A pressure-resistant optical fiber cable, characterized in that a pressure-resistant welded metal tube having an inner diameter slightly smaller than the outer diameter of the spacer is vertically aligned and coated around the spacer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15678580U JPH032884Y2 (en) | 1980-11-01 | 1980-11-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15678580U JPH032884Y2 (en) | 1980-11-01 | 1980-11-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5779804U JPS5779804U (en) | 1982-05-17 |
| JPH032884Y2 true JPH032884Y2 (en) | 1991-01-25 |
Family
ID=29515925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15678580U Expired JPH032884Y2 (en) | 1980-11-01 | 1980-11-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH032884Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014042221A1 (en) * | 2012-09-13 | 2014-03-20 | 国立大学法人東京大学 | Component analysis device |
-
1980
- 1980-11-01 JP JP15678580U patent/JPH032884Y2/ja not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014042221A1 (en) * | 2012-09-13 | 2014-03-20 | 国立大学法人東京大学 | Component analysis device |
| US9267895B2 (en) | 2012-09-13 | 2016-02-23 | The University Of Tokyo | Chemical analysis device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5779804U (en) | 1982-05-17 |
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