JPH0798421A - Optical fiber high strength connection method - Google Patents
Optical fiber high strength connection methodInfo
- Publication number
- JPH0798421A JPH0798421A JP11264291A JP11264291A JPH0798421A JP H0798421 A JPH0798421 A JP H0798421A JP 11264291 A JP11264291 A JP 11264291A JP 11264291 A JP11264291 A JP 11264291A JP H0798421 A JPH0798421 A JP H0798421A
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- hermetic
- layer
- fiber glass
- connection method
- 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
Links
- 239000013307 optical fiber Substances 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000010410 layer Substances 0.000 claims abstract description 25
- 239000011521 glass Substances 0.000 claims abstract description 23
- 239000011247 coating layer Substances 0.000 claims abstract description 12
- 238000007526 fusion splicing Methods 0.000 claims abstract description 10
- 238000004140 cleaning Methods 0.000 claims abstract description 5
- 230000003014 reinforcing effect Effects 0.000 abstract description 3
- 239000010409 thin film Substances 0.000 description 7
- 230000004927 fusion Effects 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 238000009501 film coating Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Mechanical Coupling Of Light Guides (AREA)
Abstract
(57)【要約】 （修正有）
【目的】 ハーメチック光ファイバの融着接続後の強度
低下の小さい光ファイバの高強度接続方法を提供する。
【構成】 被覆層の除去工程、ハーメチック層の除去工
程、光ファイバガラスの切断工程、光ファイバガラスの
洗浄工程をこの順序で行なった後、融着接続し、該接続
部を補強する光ファイバの高強度接続方法。
(57) [Summary] (Modified) [Objective] To provide a high-strength connection method for an optical fiber with a small decrease in strength after fusion splicing of a hermetic optical fiber. [Structure] After performing a coating layer removing step, a hermetic layer removing step, an optical fiber glass cutting step, and an optical fiber glass cleaning step in this order, fusion-splicing is performed and an optical fiber for reinforcing the spliced portion is formed. High strength connection method.
Description
【０００１】[0001]
【産業上の利用分野】本発明は通信用光ファイバの融着
接続方法に関し、特に光ファイバガラス上にハーメチッ
ク層を具えた光ファイバの高強度接続方法に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fusion splicing method for communication optical fibers, and more particularly to a high strength splicing method for optical fibers having a hermetic layer on an optical fiber glass.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】光ファ
イバガラスの外周上に、例えばアルミ、スズ、チタン、
シリコンカーバイト、窒化チタン、ジルコニア等の炭素
系の薄膜コーティング層（ハーメチック層）を具えたい
わゆるハーメチック光ファイバは、通常の光ファイバと
比較し、ハーメチック層が表面に形成されているため、
接続に際しては特に配慮が必要である。即ち、 ハーメチック層を除去することなく接続しようとする
と、ハーメチック膜の材質によっては光ファイバのコア
部が側面から観察できないために、普及しているコア直
視式融着接続機が使用できず、又ＬＩ／ＬＤ（Ｌｏｃａ
ｌ Ｉｎｊｅｃｔｉｏｎ／ Ｌｏｃａｌ Ｄｅｔｅｃｔ
ｉｏｎ）と呼ばれる光注入式の融着接続機の使用も困難
である。このため旧来の光パワモニタ法しか使用出来
ず、接続作業の効率が大幅に低減する。 ハーメチック層を除去することなく放電融着しようと
すると、ハーメチック膜の材質によっては放電電流がハ
ーメチック層を流れ、表面劣化を生じることがある。こ
のため、光ファイバの接続後の強度が大幅に低下する。2. Description of the Related Art On the outer periphery of an optical fiber glass, for example, aluminum, tin, titanium,
A so-called hermetic optical fiber including a carbon-based thin film coating layer (hermetic layer) such as silicon carbide, titanium nitride, or zirconia has a hermetic layer formed on the surface as compared with a normal optical fiber.
Particular attention should be paid to the connection. That is, if it is attempted to connect without removing the hermetic layer, the core part of the optical fiber cannot be observed from the side surface depending on the material of the hermetic film, and therefore, the popular core direct-view fusion splicer cannot be used. LI / LD (Loca
l Injection / Local Detect
It is also difficult to use a light injection type fusion splicer called an ion. For this reason, only the conventional optical power monitor method can be used, and the efficiency of connection work is greatly reduced. If an attempt is made to perform discharge fusion without removing the hermetic layer, a discharge current may flow through the hermetic layer depending on the material of the hermetic film, causing surface deterioration. Therefore, the strength of the optical fiber after connection is significantly reduced.
【０００３】主として上記の理由によりハーメチック層
を具えた光ファイバの接続に際しては、あらかじめハー
メチック層を除去して融着接続する方法が有効である。
このハーメチック層を除去する手段としてアーク放電等
の熱を利用して炭素系薄膜コーティング層を熱分解する
方法が、さきに本願出願人により提案されている（平成
元年１月２３日出願、特願平１−１４６３８号）。[0003] Mainly for the above-mentioned reason, when connecting an optical fiber having a hermetic layer, it is effective to remove the hermetic layer in advance and perform fusion splicing.
As a means for removing the hermetic layer, a method of thermally decomposing the carbon-based thin film coating layer by using heat of arc discharge or the like was previously proposed by the applicant of the present application (filed on January 23, 1989, special feature: Japanese Patent Application No. 1-163838).
【０００４】一方、光ファイバの高強度接続方法とし
て、被覆光ファイバの被覆部を加熱し、被覆を長手方向
に若干ずらして光ファイバガラス部を露出させた後、露
出した光ファイバガラスに加傷し、光ファイバガラス部
に接触することなく曲げ及び引張り応力を与えて光ファ
イバガラスを切断し、その後再び被覆を除去して所定長
の光ファイバガラスを露出し、露出した光ファイバの表
面を放電によってクリーニングし、この部分に薄膜コー
ティングを施し、Ｖ溝にセットして融着接続し、該接続
部を補強する方法が、さきに本願出願人により提案され
ている（昭和６２年９月３日出願、特願昭６２−２２１
６７７号）。On the other hand, as a high-strength connection method for optical fibers, the coated portion of the coated optical fiber is heated to slightly shift the coating in the longitudinal direction to expose the optical fiber glass portion, and then the exposed optical fiber glass is scratched. Then, the optical fiber glass is cut by applying bending and tensile stress without touching the optical fiber glass part, and then the coating is removed again to expose the optical fiber glass of a predetermined length, and the exposed surface of the optical fiber is discharged. The applicant of the present invention has previously proposed a method of cleaning the surface, applying a thin film coating to this portion, setting it in the V groove, and fusion-splicing it to reinforce the connecting portion (September 3, 1987). Application, Japanese Patent Application No. Sho 62-221
677).
【０００５】しかしながら、本願発明者等が、上述の特
願昭６２−２２１６７７号の接続方法に特願平１−１４
６３８号によるハーメチック層の除去方法を含めた実験
を行なったところでは、後述する表１に示すように初期
強度６ｋｇのハーメチック光ファイバが２ｋｇ以下の接
続後強度しか達成できなかった。However, the inventors of the present invention have disclosed the above-mentioned Japanese Patent Application No. 62-221677 in Japanese Patent Application No. 1-14.
When an experiment including a method for removing a hermetic layer according to No. 638 was performed, a hermetic optical fiber having an initial strength of 6 kg could achieve a strength of 2 kg or less after connection, as shown in Table 1 described later.
【０００６】[0006]
【課題を解決するための手段】本発明は上述の問題点を
解消し、ハーメチック光ファイバの初期強度を徒らに低
下させることのない光ファイバの高強度接続方法を提供
するもので、その特徴は、少なくとも被覆層除去の工
程、ハーメチック層を気中放電により除去する工程、露
出した光ファイバガラスを切断する工程及び光ファイバ
ガラスを洗浄する工程をこの順序で行なった後、融着接
続し該接続部を補強することにある。SUMMARY OF THE INVENTION The present invention solves the above problems and provides a high-strength connecting method for optical fibers which does not unduly reduce the initial strength of the hermetic optical fiber. Is at least the step of removing the coating layer, the step of removing the hermetic layer by air discharge, the step of cutting the exposed optical fiber glass and the step of cleaning the optical fiber glass in this order, and then fusion splicing It is to reinforce the connection.
【０００７】[0007]
【実施例】図１の（イ）〜（ト）は本発明の高強度接続
方法の具体例の作業手順の説明図である。以下図１に従
って作業工程を説明する。 （イ）被覆層２を有する光ファイバ心線１の上記被覆層
２の所定の位置に切込みを入れた後、ヒータ１１で被覆
層２を加熱しながら矢印の方向に抜き取り、ハーメチッ
ク層３を露出させる。除去長さは約３ｍｍである。 （ロ）光軸に対して垂直方向に配置した１対の放電電極
棒５を用いて気中放電させながら光ファイバ心線１をそ
の光軸方向に移動させ、所定長（１０〜１５ｍｍ）のハ
ーメチック層３を熱分解により除去し光ファイバガラス
４を露出させる。 （ハ）光ファイバ心線１の被覆部を固定クランプ６で把
持し、先端のハーメチック層３を引張り、クランプ７で
把持し、引張りクランプ７を矢印の方向に移動させて光
ファイバガラス４部に張力を与えながら、光ファイバガ
ラス４の表面に加傷刃８で初期傷を与え、切断枕９で曲
げを与えて光ファイバガラス４を切断する。切断長は１
２〜１６ｍｍである。 （ニ）光ファイバガラス４部をヒータにより加熱した硫
酸１０に浸漬するか、あるいはアセトンに浸漬し、これ
に超音波１６を与えて、光ファイバガラス４の表面に付
着した付着物を洗浄により除去する。この際、上記の２
つの方法を併用してもよい。 （ホ）露出した光ファイバガラス４及びハーメチック層
３の外周上に、薄膜の樹脂を塗布し、硬化させて薄膜コ
ート層１２を形成する。 （ヘ）上記（イ）〜（ホ）で処理した２本の光ファイバ
ガラス４を、その端面を対向させてＶ溝台１３に位置決
めし、Ｖ溝クランプ１４で固定する。この状態でコア直
視式融着接続機等を用い、放電電極棒５の放電加熱によ
り融着接続する。 （ト）それぞれに半円形断面をもつ１対の鋳型内に前記
接続部をセットし、樹脂を充填硬化させ、光ファイバ心
線１の被覆層と同等の外形にモールド補強層１５を形成
する。1 (A) to 1 (G) are explanatory views of a work procedure of a specific example of the high strength connection method of the present invention. The work process will be described below with reference to FIG. (A) After making a notch at a predetermined position in the coating layer 2 of the optical fiber core wire 1 having the coating layer 2, the heater 11 heats the coating layer 2 and extracts it in the direction of the arrow to expose the hermetic layer 3. Let The removal length is about 3 mm. (B) The optical fiber core wire 1 is moved in the direction of the optical axis while discharging in the air using the pair of discharge electrode rods 5 arranged in the direction perpendicular to the optical axis, and the optical fiber core wire 1 of a predetermined length (10 to 15 mm) is moved. The hermetic layer 3 is removed by thermal decomposition to expose the optical fiber glass 4. (C) The coated portion of the optical fiber core wire 1 is gripped by the fixed clamp 6, the hermetic layer 3 at the tip is pulled and gripped by the clamp 7, and the tension clamp 7 is moved in the direction of the arrow to the optical fiber glass 4 portion. While applying tension, the scratches 8 give initial scratches to the surface of the optical fiber glass 4, and the cutting pillow 9 bends to cut the optical fiber glass 4. Cutting length is 1
It is 2 to 16 mm. (D) 4 parts of the optical fiber glass is immersed in sulfuric acid 10 heated by a heater or immersed in acetone, and ultrasonic waves 16 are applied to this to remove deposits adhering to the surface of the optical fiber glass 4 by washing. To do. At this time, the above 2
The two methods may be used together. (E) A thin film resin is applied on the exposed outer peripheries of the optical fiber glass 4 and the hermetic layer 3 and cured to form the thin film coat layer 12. (F) The two optical fiber glasses 4 processed in (a) to (e) above are positioned on the V-groove base 13 with their end faces facing each other and fixed by the V-groove clamp 14. In this state, a core direct-view fusion splicer or the like is used to perform fusion splicing by discharging and heating the discharge electrode rod 5. (G) The connection portion is set in a pair of molds each having a semicircular cross section, and the resin is filled and cured to form the mold reinforcing layer 15 in an outer shape equivalent to the coating layer of the optical fiber core wire 1.
【０００８】[0008]
【実験例】初期破断強度約６ｋｇのハーメチック光ファ
イバを図１に示す工程で融着接続し、接続後の破断強度
を求めた。その結果は図２に示す通りで平均破断強度
２．５ｋｇを得た。又このときの接続損失は図３に示す
通りであり、平均接続損失は０．０３ｄＢで通常の接続
と同等の良好な値が得られた。Experimental Example A hermetic optical fiber having an initial breaking strength of about 6 kg was fusion-spliced in the process shown in FIG. 1 and the breaking strength after the connection was obtained. The result was as shown in FIG. 2 and the average breaking strength was 2.5 kg. The connection loss at this time is as shown in FIG. 3, and the average connection loss was 0.03 dB, which was a good value equivalent to that of the normal connection.
【０００９】比較のために表１に示すように工程の順序
を入れ替えて作業したところ、ことごとく破断強度が低
下し、本発明の方法による順序がすぐれていることが確
認された。For comparison, as shown in Table 1, when the order of the steps was changed and the work was carried out, it was confirmed that the breaking strength decreased and that the order of the method of the present invention was excellent.
【００１０】[0010]
【表１】 [Table 1]
【００１１】なお、本発明の接続方法は前述のように工
程の順序について規定するものであり、個々の工程の技
術内容や融着接続方法、補強層の形成方法について、特
にその方法を限定するものではない。又薄膜コーティン
グ層の形成工程以降は、例えば光ファイバの被覆部をク
ランプして融着接続したり接続後フッ酸洗浄したりする
ことで、なお一層の強度の向上をはかることが可能であ
る。The connection method of the present invention defines the order of steps as described above, and particularly the technical contents of each step, the fusion splicing method, and the method for forming the reinforcing layer are limited. Not a thing. After the step of forming the thin film coating layer, the strength of the optical fiber can be further improved by, for example, clamping and fusion-splicing the coating portion of the optical fiber or cleaning with hydrofluoric acid after the connection.
【００１２】[0012]
【発明の効果】以上説明したように、本発明の接続方法
によれば、ハーメチック光ファイバの初期強度を徒らに
低下させることなく、高強度の融着接続部を得ることが
可能となる。As described above, according to the splicing method of the present invention, it is possible to obtain a high-strength fusion spliced portion without unduly reducing the initial strength of the hermetic optical fiber.
【図１】（イ）〜（ト）は本発明の接続方法の具体例の
作業手順の説明図である。1A to 1G are explanatory diagrams of a work procedure of a specific example of a connection method of the present invention.
【図２】本発明の接続方法による光ファイバ接続部の破
断強度のデータ図である。FIG. 2 is a data diagram of breaking strength of an optical fiber connecting portion according to the connecting method of the present invention.
【図３】本発明の接続方法による光ファイバ接続部の接
続損失のデータ図である。FIG. 3 is a data diagram of connection loss of an optical fiber connection section according to the connection method of the present invention.
１ 光ファイバ心線 ２ 被覆層 ３ ハーメチッ
ク層 ４ 光ファイバガラス ５ 電極棒 ６ 固定クラ
ンプ ７ 引張りクランプ ８ 加傷刃 ９ 切断枕
１０ 硫酸 １１ ヒータ １２ 薄膜コート層 １３ Ｖ溝台
１４ Ｖ溝クランプ １５ モールド補強層 １６ 超音波源1 optical fiber core wire 2 coating layer 3 hermetic layer 4 optical fiber glass 5 electrode rod 6 fixed clamp 7 tension clamp 8 wound blade 9 cutting pillow
10 Sulfuric acid 11 Heater 12 Thin film coat layer 13 V groove stand 14 V groove clamp 15 Mold reinforcement layer 16 Ultrasonic source
【手続補正書】[Procedure amendment]
【提出日】平成６年７月８日[Submission date] July 8, 1994
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】図面[Document name to be corrected] Drawing
【補正対象項目名】全図[Correction target item name] All drawings
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図１】 [Figure 1]
【図２】 [Fig. 2]
【図３】 [Figure 3]
Claims (1)
具えその上に被覆層を設けた光ファイバの接続方法であ
って、少くとも被覆層除去の工程、ハーメチック層を気
中放電により除去する工程、露出した光ファイバガラス
を切断する工程及び光ファイバガラスを洗浄する工程を
この順序で行なった後、融着接続し、該接続部を補強す
ることを特徴とする光ファイバの高強度接続方法。1. A method for connecting an optical fiber comprising a hermetic layer on an optical fiber glass and a coating layer provided on the hermetic layer, the method comprising at least removing the coating layer and removing the hermetic layer by air discharge. A method for high-strength connection of an optical fiber, which comprises performing a step of cutting the exposed optical fiber glass and a step of cleaning the optical fiber glass in this order, and then performing fusion splicing to reinforce the spliced portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3112642A JP2895654B2 (en) | 1991-02-20 | 1991-02-20 | High strength connection method of optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3112642A JP2895654B2 (en) | 1991-02-20 | 1991-02-20 | High strength connection method of optical fiber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0798421A true JPH0798421A (en) | 1995-04-11 |
| JP2895654B2 JP2895654B2 (en) | 1999-05-24 |
Family
ID=14591843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3112642A Expired - Fee Related JP2895654B2 (en) | 1991-02-20 | 1991-02-20 | High strength connection method of optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2895654B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006112675A1 (en) * | 2005-04-22 | 2006-10-26 | Ilsin Tech Co. Ltd. | Portable optical-fiber processing equipment |
| US8092100B2 (en) | 2005-04-22 | 2012-01-10 | Ilsin Tech Co., Ltd. | Portable optical-fiber processing equipment |
| US9266771B1 (en) | 2014-07-31 | 2016-02-23 | Corning Optical Communications LLC | Electric arc apparatus for processing an optical fiber, and related systems and methods |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5842013A (en) * | 1981-09-07 | 1983-03-11 | Nippon Telegr & Teleph Corp <Ntt> | Method for reinforcing treatment of fusion-fixing connection part of optical fiber |
| JPS6463905A (en) * | 1987-09-03 | 1989-03-09 | Sumitomo Electric Industries | High-strength connecting method for optical fiber |
| JPH0287106A (en) * | 1988-09-24 | 1990-03-28 | Sumitomo Electric Ind Ltd | Fusion splicing method for hermetically coated optical fiber |
| JPH02195304A (en) * | 1989-01-23 | 1990-08-01 | Sumitomo Electric Ind Ltd | Fusion splicing method for optical fiber |
| JPH02199411A (en) * | 1989-01-30 | 1990-08-07 | Nippon Telegr & Teleph Corp <Ntt> | Method and device for removing coating of hermetically coated optical fiber |
-
1991
- 1991-02-20 JP JP3112642A patent/JP2895654B2/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5842013A (en) * | 1981-09-07 | 1983-03-11 | Nippon Telegr & Teleph Corp <Ntt> | Method for reinforcing treatment of fusion-fixing connection part of optical fiber |
| JPS6463905A (en) * | 1987-09-03 | 1989-03-09 | Sumitomo Electric Industries | High-strength connecting method for optical fiber |
| JPH0287106A (en) * | 1988-09-24 | 1990-03-28 | Sumitomo Electric Ind Ltd | Fusion splicing method for hermetically coated optical fiber |
| JPH02195304A (en) * | 1989-01-23 | 1990-08-01 | Sumitomo Electric Ind Ltd | Fusion splicing method for optical fiber |
| JPH02199411A (en) * | 1989-01-30 | 1990-08-07 | Nippon Telegr & Teleph Corp <Ntt> | Method and device for removing coating of hermetically coated optical fiber |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006112675A1 (en) * | 2005-04-22 | 2006-10-26 | Ilsin Tech Co. Ltd. | Portable optical-fiber processing equipment |
| US8092100B2 (en) | 2005-04-22 | 2012-01-10 | Ilsin Tech Co., Ltd. | Portable optical-fiber processing equipment |
| US20120174714A1 (en) * | 2005-04-22 | 2012-07-12 | Ilsin Tech. Co. Ltd. | Portable optical-fiber processing equipment |
| US8509587B2 (en) | 2005-04-22 | 2013-08-13 | Ilsin Tech. Co., Ltd. | Portable optical-fiber processing equipment |
| US9266771B1 (en) | 2014-07-31 | 2016-02-23 | Corning Optical Communications LLC | Electric arc apparatus for processing an optical fiber, and related systems and methods |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2895654B2 (en) | 1999-05-24 |
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