JPS63173205U - - Google Patents
Info
- Publication number
- JPS63173205U JPS63173205U JP6540287U JP6540287U JPS63173205U JP S63173205 U JPS63173205 U JP S63173205U JP 6540287 U JP6540287 U JP 6540287U JP 6540287 U JP6540287 U JP 6540287U JP S63173205 U JPS63173205 U JP S63173205U
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- water
- absorbing
- immersion detection
- fibers
- 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 claims description 18
- 238000001514 detection method Methods 0.000 claims description 11
- 238000007654 immersion Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000000835 fiber Substances 0.000 claims description 7
- 230000008961 swelling Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Description
第１図は本考案の浸水検知光フアイバケーブル
の実施例を示す斜視図、第２図はその浸水検知光
フアイバケーブルの使用方法を示す説明図、第３
図と第４図と第６図とはそれぞれ本考案の浸水検
知光フアイバケーブルを種々のケーブルに使用し
た例を示すケーブル横断面図、第５図と第７図と
は同様の例を示す段剥側面図、第８図はその実際
の効果を示すために試作したケーブルの横断面図
、第９図は挿入する浸水検知光フアイバケーブル
の光フアイバの構成を示す段剥側面図、第１０図
はその浸水検知光フアイバケーブルの伝送損失の
増加を示すグラフである。
３……光フアイバ、４……吸水膨潤性繊維、Ｃ
……浸水検知光フアイバケーブル。
FIG. 1 is a perspective view showing an embodiment of the optical fiber cable for water immersion detection according to the present invention, FIG. 2 is an explanatory diagram showing how to use the optical fiber cable for water immersion detection, and FIG.
Figures 4 and 6 are cable cross-sectional views showing examples in which the optical fiber cable for water immersion detection of the present invention is used in various cables, and Figures 5 and 7 are cross-sectional views showing similar examples. Fig. 8 is a cross-sectional view of a cable prototyped to show its actual effect; Fig. 9 is a peeled side view showing the structure of the optical fiber of the optical fiber cable for water immersion detection to be inserted; Fig. 10 is a graph showing the increase in transmission loss of the optical fiber cable for water immersion detection. 3... Optical fiber, 4... Water-absorbing swelling fiber, C
...Water immersion detection fiber optic cable.
Claims (1)
の少なくとも一部に接触するよう配置された吸水
膨潤性繊維とから構成されたことを特徴とする浸
水検知光フアイバケーブル。 ２ 前記吸水膨潤性繊維は、前記光フアイバの外
周に縦添えされていることを特徴とする実用新案
登録請求の範囲第１項に記載の浸水検知光フアイ
バケーブル。 ３ 前記吸水膨潤性繊維は、前記光フアイバの外
周に巻回されていることを特徴とする実用新案登
録請求の範囲第１項に記載の浸水検知光フアイバ
ケーブル。 ４ 前記吸水膨潤性繊維は紐状体とされ、１本ま
たは複数本の光フアイバと撚り合わされているこ
とを特徴とする実用新案登録請求の範囲第１項に
記載の浸水検知光フアイバケーブル。 ５ 前記吸水膨潤性繊維はテープ状とされ、前記
光フアイバの外周にラツプ巻きまたは粗巻きされ
ていることを特徴とする実用新案登録請求の範囲
第１項に記載の浸水検知光フアイバケーブル。[Claims for Utility Model Registration] 1. A water immersion detection optical fiber comprising one or more optical fibers and water-absorbing and swelling fibers arranged so as to contact at least part of the outer periphery of the optical fibers. cable. 2. The water immersion detection optical fiber cable according to claim 1, wherein the water-absorbing and swelling fibers are longitudinally attached to the outer periphery of the optical fiber. 3. The water immersion detection optical fiber cable according to claim 1, wherein the water-absorbing and swelling fiber is wound around the outer periphery of the optical fiber. 4. The water immersion detection optical fiber cable according to claim 1, wherein the water-absorbing and swelling fibers are formed into a string-like body and are twisted together with one or more optical fibers. 5. The water immersion detection optical fiber cable according to claim 1, wherein the water-absorbing and swelling fiber is in the form of a tape, and is wrapped or loosely wound around the outer periphery of the optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6540287U JPS63173205U (en) | 1987-04-30 | 1987-04-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6540287U JPS63173205U (en) | 1987-04-30 | 1987-04-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63173205U true JPS63173205U (en) | 1988-11-10 |
Family
ID=30902440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6540287U Pending JPS63173205U (en) | 1987-04-30 | 1987-04-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63173205U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02126103U (en) * | 1989-03-29 | 1990-10-17 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57128304A (en) * | 1981-01-09 | 1982-08-09 | Furukawa Electric Co Ltd:The | Nonmetallic optical cable |
| JPS6186630A (en) * | 1984-10-04 | 1986-05-02 | Nippon Telegr & Teleph Corp <Ntt> | Method for detecting water intrusion in communication cable using optical fiber |
| JPS62837A (en) * | 1985-06-27 | 1987-01-06 | Nippon Telegr & Teleph Corp <Ntt> | Optical fiber water immersion detection line and water immersion detection type optical fiber cable |
-
1987
- 1987-04-30 JP JP6540287U patent/JPS63173205U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57128304A (en) * | 1981-01-09 | 1982-08-09 | Furukawa Electric Co Ltd:The | Nonmetallic optical cable |
| JPS6186630A (en) * | 1984-10-04 | 1986-05-02 | Nippon Telegr & Teleph Corp <Ntt> | Method for detecting water intrusion in communication cable using optical fiber |
| JPS62837A (en) * | 1985-06-27 | 1987-01-06 | Nippon Telegr & Teleph Corp <Ntt> | Optical fiber water immersion detection line and water immersion detection type optical fiber cable |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02126103U (en) * | 1989-03-29 | 1990-10-17 |
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