JP2565120B2 - Optical fiber terminal processing method - Google Patents
Optical fiber terminal processing methodInfo
- Publication number
- JP2565120B2 JP2565120B2 JP5311398A JP31139893A JP2565120B2 JP 2565120 B2 JP2565120 B2 JP 2565120B2 JP 5311398 A JP5311398 A JP 5311398A JP 31139893 A JP31139893 A JP 31139893A JP 2565120 B2 JP2565120 B2 JP 2565120B2
- Authority
- JP
- Japan
- Prior art keywords
- polyimide resin
- optical fiber
- coating layer
- processing method
- fiber terminal
- 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 - Lifetime
Links
Landscapes
- Processing Of Terminals (AREA)
- Light Guides In General And Applications Therefor (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、光ファイバの融着接続
工法に関し、特に光ファイバの末端からポリイミド樹脂
被覆層を除去する工法の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fusion splicing method for optical fibers, and more particularly to an improvement in the method for removing a polyimide resin coating layer from the end of an optical fiber.
【０００２】[0002]
【従来の技術】光ファイバの融着接続時に光ファイバの
末端からポリイミド樹脂被覆層を除去し、ファイバ素線
を剥きだす必要がある。従来この種の端末処理工法とし
ては、光ファイバの二次被覆の除去後に、露出したポリ
イミド樹脂被覆層を加熱した農硫酸に浸漬することによ
りポリイミド樹脂を溶解して取り除いている。2. Description of the Related Art At the time of fusion splicing of optical fibers, it is necessary to remove the polyimide resin coating layer from the ends of the optical fibers to expose the fiber strands. Conventionally, as this type of terminal treatment method, after removing the secondary coating of the optical fiber, the exposed polyimide resin coating layer is immersed in heated agricultural sulfuric acid to dissolve and remove the polyimide resin.
【０００３】[0003]
【発明が解決しようとする課題】上述した従来の端末処
理工法では、農硫酸を使用するために安全衛生上の問題
があり、例えば船上のように不安定な場所での作業は極
めて困難である。またポリイミド樹脂被覆層が溶解する
までの時間が長く、端末処理作業に長時間を要するとい
う欠点がある。The above-mentioned conventional terminal treatment method has a safety and health problem because it uses agricultural sulfuric acid, and it is extremely difficult to work in an unstable place such as on a ship. . Further, it takes a long time for the polyimide resin coating layer to be dissolved, which requires a long time for the terminal treatment work.
【０００４】別な端末処理工法として、ポリイミド樹脂
被覆層を空気中で加熱焼結して除去する工法が考えられ
るが、この方法は、ファイバ素線に付着した炭化物を一
般の溶剤では拭い取ることができないという欠点があ
る。As another terminal treatment method, a method of removing the polyimide resin coating layer by heating and sintering it in air is conceivable. In this method, the carbide adhered to the fiber strand is wiped off with a general solvent. There is a drawback that you cannot do it.
【０００５】[0005]
【課題を解決するための手段】本発明の目的は、上述の
欠点を除去し、ファイバ素線にポリイミド樹脂層を被覆
した光ファイバの末端から一定の長さのポリイミド樹脂
被覆層を容易に除去できる工法を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned drawbacks and to easily remove a polyimide resin coating layer of a certain length from the end of an optical fiber in which the fiber strand is coated with the polyimide resin layer. It is to provide a construction method that can.
【０００６】ポリイミド樹脂のような高分子材料は常温
ではガラス状態であるが、温度が上昇するにつれてゴム
状態に移り、限界温度状態になると流動状態に変化する
という特徴がある。このため、本発明の光ファイバ融着
接続用端末処理工法では、酸化を防止するために窒素雰
囲気中において、露出した状態のポリイミド樹脂被覆層
を高温に加熱することにより融解し、溶解したポリイミ
ド樹脂がガラス状態に戻る前に洗浄液を用いて除去する
ことによって上記目標を達成している。A polymer material such as a polyimide resin is in a glass state at room temperature, but it has a characteristic that it shifts to a rubber state as the temperature rises, and changes to a fluid state at a critical temperature state. Therefore, in the optical fiber fusion splicing terminal treatment method of the present invention, in a nitrogen atmosphere to prevent oxidation, the exposed polyimide resin coating layer is melted by heating to a high temperature, and the melted polyimide resin Achieves the above goal by removing with a cleaning liquid before returning to the glass state.
【０００７】[0007]
【実施例】次に本発明の実施例について図面を参照して
説明する。図１は、本発明の光ファイバ融着接続用端末
処理工法の手順図である。光ファイバ１の二次被覆材に
は通常、シリコン樹脂または紫外線硬化ＵＶ樹脂が使用
されている。何れの場合においても一次被覆材であるポ
リイミド樹脂との密着性は高くないため、ワイヤストリ
ッパ等により機械的に二次被覆層２を引き抜き除去す
る。この際、ポリイミド被覆層３の表面に二次被覆材の
残骸が付着している場合が多い。この残骸も除去しなけ
ればならないため、エチルアルコールまたはアセトンを
しみ込ませたガーゼで数回拭う。次いで、窒素雰囲気中
で光ファイバ１の末端から一定の長さのポリイミド被覆
層３を加熱器４で加熱融解する。このときの加熱温度は
３５０度から４００度の範囲を設定する。ポリイミド樹
脂部がガラス状態に変化する温度に下がる前に、メチル
アルコールまたはアセトンを吹き付けてポリイミド樹脂
層３を除去し、ファイバ素線５を得る。Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a procedure diagram of an optical fiber fusion splicing terminal processing method of the present invention. The secondary coating material of the optical fiber 1 is usually made of silicone resin or UV curable UV resin. In any case, since the adhesion with the polyimide resin as the primary coating material is not high, the secondary coating layer 2 is mechanically pulled out and removed by a wire stripper or the like. At this time, the remnants of the secondary coating material often adhere to the surface of the polyimide coating layer 3. This debris must also be removed, so wipe it several times with gauze soaked with ethyl alcohol or acetone. Then, the polyimide coating layer 3 having a constant length from the end of the optical fiber 1 is heated and melted by the heater 4 in a nitrogen atmosphere. The heating temperature at this time is set in the range of 350 to 400 degrees. Before the temperature of the polyimide resin portion is changed to a glass state, methyl alcohol or acetone is sprayed to remove the polyimide resin layer 3 to obtain the fiber strand 5.
【０００８】[0008]
【発明の効果】以上説明したように本発明は、露出した
状態のポリイミド樹脂被覆層を窒素雰囲気中で高温に加
熱することにより短時間で溶解し、次いで洗浄液を用い
て溶解したポリイミド樹脂を除去するため、人体に害の
ある薬品を使用することなく、また従来の工法に比べ作
業時間を短縮することができる。As described above, according to the present invention, the exposed polyimide resin coating layer is heated to a high temperature in a nitrogen atmosphere to dissolve in a short time, and then the dissolved polyimide resin is removed using a cleaning liquid. Therefore, the working time can be shortened as compared with the conventional construction method without using a chemical that is harmful to the human body.
【図１】本発明の光ファイバ融着接続用端末処理工法を
説明する手順図。FIG. 1 is a procedure diagram for explaining a terminal treatment method for optical fiber fusion splicing of the present invention.
１ 光ファイバ ２ 二次被覆層 ３ ポリイミド被覆層 ４ 加熱器 ５ ファイバ素線 ６ 窒素雰囲気中 1 Optical fiber 2 Secondary coating layer 3 Polyimide coating layer 4 Heater 5 Fiber element wire 6 In nitrogen atmosphere
Claims (1)
出した状態のポリイミド樹脂被覆層を窒素雰囲気中で高
温に加熱することにより前記ポリイミド樹脂被覆層を溶
解し、当該ポリイミド樹脂部がガラス状態に変化する温
度に下がる前に洗浄液を用いて当該ポリイミド樹脂被覆
層を除去することを特徴とする光ファイバ端末処理工
法。1. After removing the secondary coating on the end of the optical fiber, the exposed polyimide resin coating layer is heated to a high temperature in a nitrogen atmosphere to dissolve the polyimide resin coating layer.
Temperature at which the polyimide resin part changes to a glass state
The polyimide resin coating with a cleaning solution before it goes down
An optical fiber terminal treatment method characterized by removing layers .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5311398A JP2565120B2 (en) | 1993-12-13 | 1993-12-13 | Optical fiber terminal processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5311398A JP2565120B2 (en) | 1993-12-13 | 1993-12-13 | Optical fiber terminal processing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07168027A JPH07168027A (en) | 1995-07-04 |
| JP2565120B2 true JP2565120B2 (en) | 1996-12-18 |
Family
ID=18016720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5311398A Expired - Lifetime JP2565120B2 (en) | 1993-12-13 | 1993-12-13 | Optical fiber terminal processing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2565120B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6055303A (en) * | 1983-09-05 | 1985-03-30 | Fujitsu Ltd | Method for removing part of secondary coating of optical fiber |
-
1993
- 1993-12-13 JP JP5311398A patent/JP2565120B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6055303A (en) * | 1983-09-05 | 1985-03-30 | Fujitsu Ltd | Method for removing part of secondary coating of optical fiber |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07168027A (en) | 1995-07-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0715193A1 (en) | Method and apparatus for stripping coatings from optical fibers | |
| US6763872B2 (en) | Method of stripping an optical fiber | |
| JP2565120B2 (en) | Optical fiber terminal processing method | |
| US4149929A (en) | Stripping of protective coatings from glass fibers | |
| US20050135763A1 (en) | Optical fiber with a mechanically strippable coating and methods of making the same | |
| JP3262020B2 (en) | Intermediate coating removal method for coated wire | |
| US4312571A (en) | Method for bonding to polymeric clad optical waveguides | |
| US6681600B1 (en) | System for removing a uniform length of coating from a fiber optic cable | |
| JPH04274202A (en) | Terminating end of optical fiber | |
| JPH0425681Y2 (en) | ||
| JP4100966B2 (en) | Fusion splicing method of optical fiber | |
| JPH0360085B2 (en) | ||
| JPH0310203A (en) | Optical fiber separating method for ribbon cable | |
| JPH0574044B2 (en) | ||
| JP3192771B2 (en) | Optical element mounting method | |
| JP2000056191A (en) | Coated optical fiber | |
| JPS62109009A (en) | Terminal part of plastic clad optical fiber | |
| CA1155642A (en) | Thermally aided stripping of optical fiber jackets | |
| JPH03107904A (en) | Manufacture of optical fiber | |
| JPS60205404A (en) | Method for connecting coated optical fibers and method for reinforcing juncture of coated optical fibers | |
| JPH01196004A (en) | Method and device for removing intermediate covering of optical fiber | |
| JPH07104455B2 (en) | Optical fiber high strength connection method | |
| JPS63208811A (en) | Terminal part processing method for optical fiber | |
| JP2004078092A (en) | Coated optical fiber and method for removing coating of this coated optical fiber | |
| JP2007101841A (en) | Coated optical fiber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19960806 |