JPS63253905A - Manufacture of sleeve for optical fiber - Google Patents
Manufacture of sleeve for optical fiberInfo
- Publication number
- JPS63253905A JPS63253905A JP8719987A JP8719987A JPS63253905A JP S63253905 A JPS63253905 A JP S63253905A JP 8719987 A JP8719987 A JP 8719987A JP 8719987 A JP8719987 A JP 8719987A JP S63253905 A JPS63253905 A JP S63253905A
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- sleeve
- metal
- manufacturing
- film
- 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 60
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 239000002184 metal Substances 0.000 claims abstract description 17
- 229910052751 metal Inorganic materials 0.000 claims abstract description 17
- 239000010408 film Substances 0.000 claims abstract description 16
- 238000009713 electroplating Methods 0.000 claims abstract description 10
- 239000010409 thin film Substances 0.000 claims abstract description 5
- 239000007864 aqueous solution Substances 0.000 claims abstract description 4
- 238000007772 electroless plating Methods 0.000 claims abstract description 4
- 238000007740 vapor deposition Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 6
- 239000010953 base metal Substances 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000005498 polishing Methods 0.000 claims description 4
- 229910003266 NiCo Inorganic materials 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 238000007747 plating Methods 0.000 claims 1
- 239000000835 fiber Substances 0.000 abstract description 4
- 230000003287 optical effect Effects 0.000 abstract description 4
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 229960002050 hydrofluoric acid Drugs 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 239000011521 glass Substances 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 3
- 238000005253 cladding Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 229910000979 O alloy Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910001258 titanium gold Inorganic materials 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
Landscapes
- Mechanical Coupling Of Light Guides (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、光ファイバの接続および機械的保護に適した
光ファイバ用スリーブの製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for manufacturing an optical fiber sleeve suitable for splicing and mechanically protecting optical fibers.
（従来の技術）
従来、この種の光ファイバ接続には、文献（光ファイバ
通信Ｐ、 １４７〜１５０１電気通信技術ニュース社
やＢｅ１ｌ 、 ３ｙｓｔ 、 Ｔｅａハ、 Ｖｏｌ、
５４゜Ｎｏ、７ 、１９７５）に見られるように、ルー
ズチューブ法やスリーブ法が用いられていた。これらの
代表的なものを第６図および第７図に示す。(Prior Art) Conventionally, this type of optical fiber connection has been described in the literature (Optical Fiber Communication P, 147-1501 Telecommunication Technology News Co., Ltd., Be1l, 3yst, Tea Ha, Vol.
54° No. 7, 1975), the loose tube method and sleeve method were used. Representative examples of these are shown in FIGS. 6 and 7.
第６図は、ルーズチューブ接続法の説明図であって、正
方形断面のスリーブ１に光ファイバ２を曲げながら挿入
し、−隅に作られる■溝に押し付は光ファイバ間の接続
を行う方法を示している。FIG. 6 is an explanatory diagram of a loose tube connection method, in which an optical fiber 2 is inserted into a sleeve 1 with a square cross section while being bent, and the optical fibers are pressed into the groove made at the corner to connect the optical fibers. It shows.
しかしながら、この方法では、光ファイバを曲げながら
挿入するので、光ファイバとスリーブの角度調整に手間
がかかるとともに、光ファイバを挿入する時に、光ファ
イバとスリーブの接触点で光ファイバが破損するので、
接続損失が大きくなるという欠点がある。However, in this method, since the optical fiber is inserted while being bent, it takes time and effort to adjust the angle between the optical fiber and the sleeve, and when inserting the optical fiber, the optical fiber may be damaged at the contact point between the optical fiber and the sleeve.
The disadvantage is that connection loss increases.
また第７図は、スリーブ接続法の説明図であって、保護
バイブ３と低融点がラスバイブ４を用いる接続法を示し
ている。光ファイバより融点の低いガラスバイブ４内に
接続すべき光ファイバ２゜２を挿入し、低融点ガラスバ
イブ４を加熱溶融させ、光ファイバ２，２間の接続を行
う。しかしながら、この方法では、低融点ガラスバイブ
４の内径と光ファイバ２の外径間にクリアランスが必要
であるので、精度の良い光軸合せが困難であり、光ファ
イバ間の接続損失を小さくするには限界がある。FIG. 7 is an explanatory diagram of the sleeve connection method, and shows a connection method using a protective vibrator 3 and a low-melting-point lath vibrator 4. The optical fiber 2°2 to be connected is inserted into the glass vibe 4, which has a melting point lower than that of the optical fiber, and the low melting point glass vibe 4 is heated and melted to connect the optical fibers 2, 2. However, this method requires a clearance between the inner diameter of the low-melting point glass vibe 4 and the outer diameter of the optical fiber 2, making it difficult to align the optical axis with high precision. has its limits.
（発明が解決しようとする問題点）
本発明は、前述の欠点に鑑みなされたもので、光ファイ
バ間の高精度な接続および光ファイバの機械的保護に適
した光ファイバ用スリーブの製造方法を提供することに
ある。(Problems to be Solved by the Invention) The present invention has been made in view of the above-mentioned drawbacks, and provides a method for manufacturing an optical fiber sleeve suitable for high-precision connection between optical fibers and mechanical protection of optical fibers. It is about providing.
（問題点を解決するための手段）
本発明は、光ファイバの表面に、蒸着または無電解めっ
きにより金属薄膜を形成し、前記金Ｒａ膜を下地金属と
して、電解めっきにより所定の厚さの金属膜を形成し、
前記金属膜付き光ファイバを所定の長さに切断した後、
フッソ酸水溶液で光ファイバを除去して、金属膜部分の
みを残すことにより、光ファイバ用スリーブを製造する
。(Means for Solving the Problems) The present invention involves forming a metal thin film on the surface of an optical fiber by vapor deposition or electroless plating, and using the gold Ra film as a base metal to obtain a predetermined thickness of metal by electrolytic plating. form a film,
After cutting the metal film coated optical fiber to a predetermined length,
An optical fiber sleeve is manufactured by removing the optical fiber with a fluorosic acid aqueous solution and leaving only the metal film portion.
（実施例） 第１図〜第５図は、本発明の詳細な説明図である。(Example) 1 to 5 are detailed explanatory diagrams of the present invention.
第１図は、材料構成を示したものであり、以下に作成法
を示す。FIG. 1 shows the material structure, and the manufacturing method is shown below.
光ファイバ２の表面に無電解めっきまたは真空蒸着等で
電解めっき用下地金属５を形成し、電解めっきでスリー
ブ層６を数十μＩ電着した後、任意の長さに切断研磨す
る。次にこれを５０％フッ化水素酸水溶液に浸漬し、光
ファイバ２をエツチング除去する。この実施例では、ク
ラツド径（スリーブ内径）が１２８μｍφの光ファイバ
を用い、下地金属には真空蒸着によるＴｉ Ａｕ （
２００〜１０００オングストローム）、スリーブ層には
電解めっきで形成した厚さ２０μ重のＮｉＣｏ合金を用
い、スリーブ長は約５ｍｍとした。クラツド径１２５μ
Ｉφ、コア径８０μｍφのステップインデックス型ファ
イバを用い接続損失を測定した結果、０．２ａＢ以下と
低損失な光結合が得られた。A base metal 5 for electrolytic plating is formed on the surface of the optical fiber 2 by electroless plating or vacuum evaporation, and a sleeve layer 6 is electrodeposited to a thickness of several tens of μI by electrolytic plating, and then cut and polished to an arbitrary length. Next, this is immersed in a 50% hydrofluoric acid aqueous solution to remove the optical fiber 2 by etching. In this example, an optical fiber with a cladding diameter (sleeve inner diameter) of 128 μmφ is used, and the base metal is TiAu (
200 to 1000 angstroms), a 20 μm thick NiCo alloy formed by electrolytic plating was used for the sleeve layer, and the sleeve length was about 5 mm. Cladding diameter 125μ
As a result of measuring the splice loss using a step-index fiber with an Iφ and a core diameter of 80 μmφ, optical coupling with a low loss of 0.2 aB or less was obtained.
また第２図には、光ファイバをスリーブに挿入し易くす
るため、スリーブ６の端面を斜めに切断して、テーバ７
を形成したものを示し、第３図には、研磨により割り８
を形成したものを示す。Further, in FIG. 2, the end face of the sleeve 6 is cut diagonally to make it easier to insert the optical fiber into the sleeve.
Fig. 3 shows a part with 8 parts formed by polishing.
It shows what was formed.
第４図には、光ファイバの接続点を観察したり、接続部
のよごれを取り除いたりできるように；ワイヤーソーま
たは研磨により窓９を形成したものである。In FIG. 4, a window 9 is formed by wire sawing or polishing so that the connection point of the optical fiber can be observed and dirt can be removed from the connection.
第５図には、スリーブ層を２層にし、しかも割り８を形
成したものを示す。内層スリーブ１０には、外層スリー
ブ１１より大きな熱膨張係数をもち、かつ選択エツチン
グ可能な電解めっき材料を用いる（例えば外層をＮｉＣ
０合金とするならば、内層はＣｕを用いる）。このよう
な材料構成でスリーブを形成すれば、光ファイバ挿入時
には、加熱することにより２層間の熱膨張差を利用して
、スリーブ内径を広げることができるので、光ファイバ
を挿入することが容易となる。なお熱膨張係数の異なる
材料構成の組合せであれば、航記の効果は（りられるの
で、２層だけでなく多層に形成してもよいことは容易に
類推できる。FIG. 5 shows a case in which the sleeve layer is made up of two layers and a split 8 is formed. The inner sleeve 10 is made of an electroplated material that has a larger coefficient of thermal expansion than the outer sleeve 11 and can be selectively etched (for example, the outer layer is made of NiC).
0 alloy, use Cu for the inner layer). If the sleeve is formed with such a material composition, the inner diameter of the sleeve can be expanded by heating and utilizing the difference in thermal expansion between the two layers when inserting the optical fiber, making it easier to insert the optical fiber. Become. Note that if a combination of materials having different coefficients of thermal expansion is used, the effect of the navigation will be reduced, so it can be easily inferred that it may be formed not only in two layers but also in multiple layers.
（発明の効果）
以上説明したように、本発明の光ファイバ用スリーブの
製造方法によれば、ファイバ径にほぼ等しい内径をもつ
金腐スリーブを作成することができるので、光ファイバ
間の光軸ずれの少ない低損失な光ファイバ接続を行うこ
とができるとともに、光ファイバ素線を機械的に保護で
きる利点がある。(Effects of the Invention) As explained above, according to the method for manufacturing an optical fiber sleeve of the present invention, it is possible to create a metal sleeve having an inner diameter approximately equal to the fiber diameter. This method has the advantage that it is possible to connect optical fibers with little misalignment and low loss, and it is also possible to mechanically protect the optical fibers.
第１図〜第５図は本発明の詳細な説明図、第６図は従来
のルーズチューブ接続法の説明図、第７図は従来のスリ
ーブ接続法の説明図である。
１・・・正方形断面のスリーブ
２・・・光ファイバ ３・・・保護パイプ４・・
・低融点ガラスバイブ
５・・・電解めっき用下地金属
６・・・スリーブ層 ７・・・テーパ８・・・
割り ９・・・窓１０・・・内層スリー
ブ １１・・・外層スリーブ特許出願人 日本
電信電話株式会社第１図
第２図
７−−−干−ｔ ｓｏ
第３図
第４図
第５図
β1 to 5 are detailed explanatory diagrams of the present invention, FIG. 6 is an explanatory diagram of a conventional loose tube connection method, and FIG. 7 is an explanatory diagram of a conventional sleeve connection method. 1... Sleeve with square cross section 2... Optical fiber 3... Protective pipe 4...
・Low melting point glass vibe 5...Base metal for electrolytic plating 6...Sleeve layer 7...Taper 8...
Split 9... Window 10... Inner layer sleeve 11... Outer layer sleeve Patent applicant Nippon Telegraph and Telephone Corporation Figure 1 Figure 2 7 --- dry so Figure 3 Figure 4 Figure 5 β
Claims (1)
り金属薄膜を形成し、前記金属薄膜を下地金属として、
電解めっきにより所定の厚さの金属膜を形成し、前記金
属膜付き光ファイバを所定の長さに切断した後、フッソ
酸水溶液で光ファイバを除去して、金属膜部分のみを残
すことにより、スリーブを製造することを特徴とする光
ファイバ用スリーブの製造方法。 ２、特許請求の範囲第１項記載の光ファイバ用スリーブ
の製造方法において、電解めっき材料としてＮｉＣｏ合
金を用いることを特徴とする光ファイバ用スリーブの製
造方法。 ３、特許請求の範囲第１項記載の光ファイバ用スリーブ
の製造方法において、電解めっきにより所定の厚さの金
属膜を形成するにあたって、内層および外層の２層から
なる金属膜を形成し、電解めっき材料としては、前記内
層の熱膨張係数が前記外層の熱膨張係数より大きな金属
を用いることを特徴とする光ファイバ用スリーブの製造
方法。 ４、特許請求の範囲第１項ないし第３項のいずれかに記
載の光ファイバ用スリーブの製造方法において、金属膜
付き光ファイバを所定の長さに切断するとき、光ファイ
バの両端を所望の角度で斜めに切断して研磨することを
特徴とする光ファイバ用スリーブの製造方法。 ５、特許請求の範囲第１項ないし第４項のいずれかに記
載の光ファイバ用スリーブの製造方法において、金属膜
付き光ファイバを所定の長さに切断した後、金属膜付き
光ファイバの外周表面の一部分を金属膜厚以上に研磨す
ることを特徴とする光ファイバ用スリーブの製造方法。[Claims] 1. Forming a metal thin film on the surface of an optical fiber by vapor deposition or electroless plating, and using the metal thin film as a base metal,
By forming a metal film of a predetermined thickness by electroplating, cutting the optical fiber with the metal film to a predetermined length, and removing the optical fiber with a fluorosic acid aqueous solution, leaving only the metal film portion, A method for manufacturing an optical fiber sleeve, the method comprising manufacturing a sleeve. 2. A method for manufacturing an optical fiber sleeve according to claim 1, characterized in that a NiCo alloy is used as the electrolytic plating material. 3. In the method for manufacturing an optical fiber sleeve according to claim 1, when forming a metal film of a predetermined thickness by electrolytic plating, a metal film consisting of two layers, an inner layer and an outer layer, is formed, and the metal film is formed by electrolytic plating. A method for manufacturing an optical fiber sleeve, characterized in that the plating material is a metal whose coefficient of thermal expansion of the inner layer is larger than that of the outer layer. 4. In the method for manufacturing an optical fiber sleeve according to any one of claims 1 to 3, when cutting the metal-coated optical fiber to a predetermined length, both ends of the optical fiber are cut to a desired length. A method for manufacturing an optical fiber sleeve, characterized by cutting it diagonally at an angle and polishing it. 5. In the method for manufacturing an optical fiber sleeve according to any one of claims 1 to 4, after cutting the metal-film-coated optical fiber to a predetermined length, the outer periphery of the metal-film-coated optical fiber is A method for manufacturing an optical fiber sleeve, characterized by polishing a portion of the surface to a thickness greater than that of a metal film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8719987A JP2510194B2 (en) | 1987-04-10 | 1987-04-10 | Method for manufacturing sleeve for optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8719987A JP2510194B2 (en) | 1987-04-10 | 1987-04-10 | Method for manufacturing sleeve for optical fiber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63253905A true JPS63253905A (en) | 1988-10-20 |
| JP2510194B2 JP2510194B2 (en) | 1996-06-26 |
Family
ID=13908304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8719987A Expired - Fee Related JP2510194B2 (en) | 1987-04-10 | 1987-04-10 | Method for manufacturing sleeve for optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2510194B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002241983A (en) * | 2001-02-16 | 2002-08-28 | Hikari Tekku Kk | Method for producing sleeve |
| JP2011141435A (en) * | 2010-01-07 | 2011-07-21 | Sumitomo Electric Ind Ltd | Optical fiber connector and method of connecting optical fibers |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100356218C (en) * | 2004-02-20 | 2007-12-19 | 刘锦濡 | Metal sleeve and its manufacturing method |
-
1987
- 1987-04-10 JP JP8719987A patent/JP2510194B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002241983A (en) * | 2001-02-16 | 2002-08-28 | Hikari Tekku Kk | Method for producing sleeve |
| JP2011141435A (en) * | 2010-01-07 | 2011-07-21 | Sumitomo Electric Ind Ltd | Optical fiber connector and method of connecting optical fibers |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2510194B2 (en) | 1996-06-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |