JP2942374B2 - Manufacturing method of optical fiber core - Google Patents
Manufacturing method of optical fiber coreInfo
- Publication number
- JP2942374B2 JP2942374B2 JP3081759A JP8175991A JP2942374B2 JP 2942374 B2 JP2942374 B2 JP 2942374B2 JP 3081759 A JP3081759 A JP 3081759A JP 8175991 A JP8175991 A JP 8175991A JP 2942374 B2 JP2942374 B2 JP 2942374B2
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- carbon film
- coating material
- tip
- electroplating
- 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 - Fee Related
Links
- 239000013307 optical fiber Substances 0.000 title claims description 62
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 44
- 229910052799 carbon Inorganic materials 0.000 claims description 44
- 239000000463 material Substances 0.000 claims description 44
- 229910052751 metal Inorganic materials 0.000 claims description 25
- 239000002184 metal Substances 0.000 claims description 25
- 239000011248 coating agent Substances 0.000 claims description 22
- 238000000576 coating method Methods 0.000 claims description 22
- 239000006223 plastic coating Substances 0.000 claims description 22
- 238000009713 electroplating Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 16
- 239000003973 paint Substances 0.000 claims description 15
- 238000007747 plating Methods 0.000 claims description 13
- 239000008151 electrolyte solution Substances 0.000 claims description 8
- 238000010891 electric arc Methods 0.000 claims description 4
- 239000002657 fibrous material Substances 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 239000003792 electrolyte Substances 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000007654 immersion Methods 0.000 claims 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 12
- 229920005989 resin Polymers 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- 229910052759 nickel Inorganic materials 0.000 description 6
- 238000004070 electrodeposition Methods 0.000 description 5
- 238000007772 electroless plating Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- KERTUBUCQCSNJU-UHFFFAOYSA-L nickel(2+);disulfamate Chemical compound [Ni+2].NS([O-])(=O)=O.NS([O-])(=O)=O KERTUBUCQCSNJU-UHFFFAOYSA-L 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 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
- 229910003481 amorphous carbon Inorganic materials 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 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
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical compound OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- KCTAWXVAICEBSD-UHFFFAOYSA-N prop-2-enoyloxy prop-2-eneperoxoate Chemical compound C=CC(=O)OOOC(=O)C=C KCTAWXVAICEBSD-UHFFFAOYSA-N 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Surface Treatment Of Glass Fibres Or Filaments (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、光源などと結合した際
にヒートサイクルで変動することが少ない光ファイバ心
線の製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical fiber core which hardly fluctuates in a heat cycle when combined with a light source or the like.
The present invention relates to a method for manufacturing a wire .
【０００２】[0002]
【従来の技術】半導体レーザ（ＬＤ）モジュールの製造
において、ＬＤと光ファイバの光軸を合わせて結合効率
を高めるために、一般に光ファイバの先端を半球状に加
工した先球ファイバが用いられている。ＬＤモジュール
製造の際には、光ファイバ端を先球加工してからＬＤと
直接又はレンズを介して接合し、全体を接着剤で固定す
る場合が多く、この結合方法は、加熱によって接着剤が
膨張することにより、ＬＤと光ファイバの固定が完全で
ない。2. Description of the Related Art In the manufacture of a semiconductor laser (LD) module, in order to increase the coupling efficiency by aligning the optical axes of the LD and the optical fiber, a hemispherical fiber in which the tip of the optical fiber is processed into a hemisphere is generally used. I have. In the case of manufacturing an LD module, the end of the optical fiber is often processed into a spherical tip and then bonded directly to the LD or via a lens, and the whole is fixed with an adhesive. Due to the expansion, the fixation of the LD and the optical fiber is not complete.
【０００３】 これに対し、他の結合方法では、前記の
ような接着剤を用いずに、光ファイバ端に先球加工を施
した後に、先球加工部の近傍に金属皮膜を被覆する。こ
の場合には、光ファイバは、ＬＤモジュールのケースに
半田付け又はスポット溶接で固着することにより、ヒー
トサイクルで変動することが少なくなる。On the other hand, according to another bonding method, the end of the optical fiber is subjected to a front ball processing without using the above-mentioned adhesive, and then a metal film is coated in the vicinity of the front ball processing section. In this case, the optical fiber is fixed to the case of the LD module by soldering or spot welding, so that the optical fiber is less likely to fluctuate in a heat cycle.
【０００４】[0004]
【発明が解決しようとする課題】前記の結合方法では、
プラスチック被覆材をはぎ取った部分は光ファイバのク
ラッドであり、折り曲げ，引張りなどの機械的な応力発
生によって光ファイバが破損しやすい。また、金属コー
トすべき外表面は、光ファイバの素材である石英であっ
て全く導電性を有しないために、まず無電解めっきを施
してから電気めっきを行なうことを要する。In the above-mentioned joining method,
The portion where the plastic coating material is stripped is the cladding of the optical fiber, and the optical fiber is easily damaged by mechanical stress generation such as bending and tension. In addition, since the outer surface to be metal-coated is quartz which is a material of an optical fiber and has no conductivity, it is necessary to first perform electroless plating and then perform electroplating.
【０００５】 この結合方法において、無電解めっきを
電気めっきの前に施すと、めっき作業が複雑になるうえ
にめっき処理時間が長くなるという問題がある。無電解
めっき又は電気めっきを施す際に、光源からの出力光を
受光する先球部がめっき処理で金属コートされないよう
に、適切なめっき遮蔽措置も必要になる。In this bonding method, if electroless plating is performed before electroplating, there is a problem that the plating operation becomes complicated and the plating processing time becomes long. When electroless plating or electroplating is performed, appropriate plating shielding measures are also required so that the tip of the ball receiving the output light from the light source is not metal-coated by plating.
【０００６】 本発明は、例えばＬＤモジュール用の光
ファイバに関する前記の問題点を改善するために提案さ
れたものであり、金属皮膜の下にカーボン皮膜が存在す
ることにより、折り曲げ，引張りなどの機械的応力に対
しても強い光ファイバ心線の製造方法を提供することを
目的としている。The present invention has been proposed in order to improve the above-mentioned problems with respect to an optical fiber for an LD module, for example, and the presence of a carbon film under a metal film allows a machine such as bending and pulling to be performed. It is an object of the present invention to provide a method for manufacturing an optical fiber core that is resistant to mechanical stress.
【０００７】 本発明の他の目的は、あらかじめカーボ
ンコートした光ファイバを用いることにより、金属皮膜
を被覆すべき部分だけにカーボン皮膜が残存するために
めっき遮蔽措置が必要がなく、電気めっきを施すだけで
カーボン皮膜上に金属皮膜を被覆できる光ファイバ心線
の製造方法を提供することである。Another object of the present invention is to use an optical fiber coated in advance with carbon so that only a portion to be coated with a metal film has a carbon film remaining, so that there is no need for a plating shielding measure, and electroplating is performed. An object of the present invention is to provide a method for manufacturing an optical fiber core wire, which can coat a metal film on a carbon film by itself.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するため
に、本発明で用いる光ファイバ素材１は、図１に示すよ
うに、加工前には光ファイバ２の全体にカーボン皮膜３
及びプラスチック被覆材４を有する。光ファイバ２は、
例えば石英ガラスのコアとクラッドからなり、カーボン
皮膜３は、一般に溶融状態のプリフォームを線引すると
同時に、反応炉においてアモルファスカーボンなどを被
覆して形成し、その厚さは約３００〜１５００オングス
トローム程度である。In order to achieve the above object, an optical fiber material 1 used in the present invention is, as shown in FIG.
And a plastic covering material 4. The optical fiber 2 is
For example, the carbon film 3 is formed of a quartz glass core and a clad. The carbon film 3 is generally formed by drawing a preform in a molten state and simultaneously coating amorphous carbon or the like in a reaction furnace, and has a thickness of about 300 to 1500 angstroms. It is.
【０００９】 プラスチック被覆材４は、一般にカーボ
ン皮膜３の直後において被覆し、その厚みは約０.２５
〜０.９mmである。プラスチック被覆材４の素材は、加
熱焼付けするシリコンゴム、紫外線照射で固化するエポ
キシアクリレートやウレタンアクリレートなどのＵＶ樹
脂である。The plastic coating material 4 is generally coated immediately after the carbon film 3 and has a thickness of about 0.25.
0.9 mm. The material of the plastic coating material 4 is a UV resin such as silicon rubber to be heated and baked and epoxy acrylate or urethane acrylate to be solidified by irradiation with ultraviolet rays.
【００１０】 本発明方法で得た光ファイバ心線５は、
図４に示すように、光ファイバ２の先端部６が例えば半
球面であり、該先端部を除いて後方のプラスチック被覆
材４までカーボン皮膜３上に金属皮膜７を被覆してい
る。光ファイバ２の先端部６は、図２のような半球面だ
けでなく、平坦面や傾斜面であってもよい。電気めっき
で形成する金属皮膜７は、通常ニッケルであるけれど
も、銅，アルミニウム，銀，金なども適用可能である。The optical fiber core 5 obtained by the method of the present invention is
As shown in FIG. 4, the tip 6 of the optical fiber 2 is, for example, a hemispherical surface, and the metal coating 7 is coated on the carbon coating 3 up to the rear plastic coating material 4 except for the tip. The tip 6 of the optical fiber 2 may be not only a hemispherical surface as shown in FIG. 2, but also a flat surface or an inclined surface. The metal film 7 formed by electroplating is usually nickel, but copper, aluminum, silver, gold and the like are also applicable.
【００１１】 本発明の製造方法では、光ファイバ素材
１の先端部からプラスチック被覆材４を所定長さだけは
ぎ取り、つぎに光ファイバ２の先端部６を平面研磨，斜
め研磨又は先球加工する。光ファイバ２の先球加工は、
該ファイバの先端をアーク放電又は微小な炎によって溶
融軟化させ、先端の球面半径が約１０〜６０μｍ程度に
なるように加工する。光ファイバ２の先端部６は、図２
のような先球加工による半球面だけでなく、研磨によっ
て平坦面や傾斜面を形成したり、公知の光ファイバ切断
器などで鏡面のような平坦面を形成してもよい。In the manufacturing method of the present invention, the plastic coating material 4 is stripped off from the distal end portion of the optical fiber material 1 by a predetermined length, and then the distal end portion 6 of the optical fiber 2 is planarly polished, obliquely polished, or rounded. The tip processing of the optical fiber 2 is as follows.
The tip of the fiber is melt-softened by arc discharge or minute flame, and is processed so that the spherical radius of the tip is about 10 to 60 μm. The tip 6 of the optical fiber 2 is shown in FIG.
In addition to the hemispherical surface obtained by the spherical processing described above, a flat surface or an inclined surface may be formed by polishing, or a flat surface such as a mirror surface may be formed by a known optical fiber cutter.
【００１２】 光ファイバ２の先端部６を加工した後
に、プラスチック被覆材の非除去部の前端８とカーボン
皮膜３の境に導電性塗料９を塗布し、図３のように導電
性塗料９を介して電気めっきを施す。導電性塗料とは、
樹脂自体が導電性ではなく、銀などの金属粉やカーボン
粒子をシリコンゴムなどの合成樹脂に分散させたもので
あり、常温乾燥型や加熱乾燥型などが存在する。After processing the tip 6 of the optical fiber 2, a conductive paint 9 is applied to the boundary between the front end 8 of the non-removed portion of the plastic coating material and the carbon film 3, and the conductive paint 9 is applied as shown in FIG. Electroplating through. What is conductive paint?
The resin itself is not conductive, but is made by dispersing metal powder such as silver or carbon particles in a synthetic resin such as silicon rubber, and includes room temperature drying type and heating drying type.
【００１３】 本発明方法において金属皮膜７を被覆す
る場合に、カーボン皮膜３の電気抵抗は１０4Ω程度の
高さであるため、直接露出カーボン皮膜全体に均一に厚
くめっきすることが困難である。この場合には、導電性
塗料９を塗布した状態で電解液に浸漬し、根元部分にめ
っき層が形成され始めるとともに上方へ引き上げて薄い
金属層をほぼ均一に形成し、ついで再度電解液に浸漬し
て厚い金属皮膜７を被覆すればよい。金属皮膜７を厚く
被覆する際に、逆円錐形の電極を使用して金属皮膜をほ
ぼ均一に形成させてもよい。When the metal film 7 is coated in the method of the present invention, since the electric resistance of the carbon film 3 is as high as about 10 4 Ω, it is difficult to plate the directly exposed carbon film uniformly and thickly. . In this case, the substrate is immersed in the electrolytic solution with the conductive paint 9 applied thereto, a plating layer starts to be formed at the root portion, and is pulled up to form a thin metal layer almost uniformly, and then immersed in the electrolytic solution again. Then, a thick metal film 7 may be applied. When the metal film 7 is thickly coated, the metal film may be formed substantially uniformly using an inverted conical electrode.
【００１４】 図示しないけれども、本発明方法は、光
ファイバ心線の端末構造に限定されるものではなく、プ
ラスチック被覆材の中間部位をはぎ取り、この中間部位
だけに金属皮膜を被覆することもできる。この場合に
は、前記中間部位におけるプラスチック被覆材の非除去
部の端面とカーボン皮膜の境にそれぞれ導電性塗料を塗
布し、導電性塗料間の中間部位を電解液に浸漬して電気
めっきを施せばよい。この中間部位だけを電解液に浸漬
するには、光ファイバ素材をＵ字状に湾曲させたり、該
素材の端部に遮蔽用ガラスキャピラリを挿通すればよ
く、得た光ファイバ心線はＬＤモジュール用ではない別
の用途に使用する。Although not shown, the method of the present invention is not limited to the terminal structure of the optical fiber core, and it is also possible to peel off the intermediate portion of the plastic coating material and coat only the intermediate portion with the metal film. In this case, a conductive paint is applied to the boundary between the end face of the non-removed portion of the plastic coating material and the carbon film in the intermediate portion, and the intermediate portion between the conductive paints is immersed in an electrolytic solution to perform electroplating. I just need. To immerse only this intermediate portion in the electrolyte, the optical fiber material may be curved into a U-shape or a glass capillary for shielding may be inserted into the end of the material. Use for other purposes not for
【００１５】[0015]
【作用】本発明の光ファイバ心線５は、光ファイバ２の
先端部６を除いて後方のプラスチック被覆材４までカー
ボン皮膜３上に金属皮膜７を有するので、ＬＤモジュー
ルのケースに半田付け又はスポット溶接で固着できる。
光ファイバ心線５は、プラスチック被覆材４をはぎ取っ
た部分にカーボン皮膜３と金属皮膜７が存在することに
より、折り曲げ，引張りなどの機械的応力に対して強
い。The optical fiber core 5 of the present invention has the metal coating 7 on the carbon coating 3 up to the plastic coating material 4 except for the tip 6 of the optical fiber 2, so that it is soldered to the case of the LD module. Can be fixed by spot welding.
The optical fiber core wire 5 is resistant to mechanical stress such as bending and tension due to the presence of the carbon film 3 and the metal film 7 at the portion where the plastic coating material 4 is stripped.
【００１６】 本発明方法では、無電解めっきを施すこ
となく、光ファイバ２のカーボン皮膜３上に金属層を直
接形成できる。電気めっきを施す前に、光ファイバの先
端部を平面研磨，斜め研磨又は先球加工してカーボン皮
膜を除去するために、この部分にめっき遮蔽措置をする
必要はない。According to the method of the present invention, a metal layer can be directly formed on the carbon coating 3 of the optical fiber 2 without performing electroless plating. Prior to electroplating, there is no need to shield the tip of the optical fiber by plating, slanting or tipping to remove the carbon film.
【００１７】 また、導電性塗料９をプラスチック被覆
材４の非除去部の前端とカーボン皮膜３の境に厚めに塗
布することにより、電気めっきの電解液がプラスチック
被覆材４に浸潤することを防止するとともに、めっきの
際にカーボン皮膜３への通電が容易になる。In addition, by applying the conductive paint 9 thicker at the boundary between the front end of the non-removed portion of the plastic coating material 4 and the carbon film 3, the electrolytic solution for electroplating is prevented from infiltrating the plastic coating material 4. At the same time, it becomes easy to energize the carbon film 3 during plating.
【００１８】[0018]
【実施例】次に、本発明を実施例に基づいて説明する。 実施例１ 図１に示すような光ファイバ素材１を用い、該素材は直
径１２０μｍのシングルモード石英光ファイバ２に約３
００〜１５００オングストローム厚のカーボン皮膜３を
被覆し、これに直径２５０μｍのＵＶ樹脂被覆材４がコ
ートされている。光ファイバ心線１の端末から約５０mm
のＵＶ樹脂被覆材をはぎ取った後に、光ファイバ先端部
６の約２mmをアーク放電によって加熱し、光ファイバ先
端部を先球加工する。Next, the present invention will be described based on embodiments. Example 1 An optical fiber material 1 as shown in FIG. 1 was used, and the material was about 3 μm on a single-mode quartz optical fiber 2 having a diameter of 120 μm.
A carbon film 3 having a thickness of 00 to 1500 angstroms is coated, and a UV resin coating material 4 having a diameter of 250 μm is coated thereon. About 50mm from the end of optical fiber core 1
After peeling off the UV resin coating material, about 2 mm of the optical fiber tip 6 is heated by arc discharge, and the tip of the optical fiber is rounded.
【００１９】 この際に、アーク放電の大きさにより、
光ファイバ端面からのカーボン皮膜３の揮散距離が相違
するが、一般的には先端面から１〜２mm長部分のカーボ
ンが揮散する（図２参照）。At this time, depending on the magnitude of the arc discharge,
Although the volatilization distance of the carbon film 3 from the end face of the optical fiber differs, generally, a portion of 1 to 2 mm long carbon volatilizes from the tip face (see FIG. 2).
【００２０】 ＵＶ樹脂被覆材４の非除去部の前端とカ
ーボン皮膜３の境に、図４のように導電性塗料９を厚く
塗布する。次に、図４で示すように、下記のスルファミ
ン酸ニッケル浴１０を用いて、第１次電着処理を行な
う。 浴組成：スルファミン酸ニッケル ５００g/l ホウ酸 ３０g/lAs shown in FIG. 4, a thick conductive paint 9 is applied to the boundary between the front end of the non-removed portion of the UV resin coating material 4 and the carbon film 3. Next, as shown in FIG. 4, a first electrodeposition treatment is performed using a nickel sulfamate bath 10 described below. Bath composition: Nickel sulfamate 500g / l Boric acid 30g / l
【００２１】 導電性塗料９の部分から給電（電流密度
５A/dm2）を行ないながら、光ファイバ素材１を５mm/mi
nの速さで徐々に引き上げる。これにより、カーボン皮
膜３の表面に２μｍのニッケルが被覆される。While supplying power (current density 5 A / dm 2 ) from the conductive paint 9, the optical fiber material 1 is supplied at 5 mm / mi.
Gradually pull up at n speed. As a result, the surface of the carbon film 3 is coated with 2 μm of nickel.
【００２２】 更に第２次電着処理として、電流密度２
０A/dm2により、被めっき部位全体に５分間で２０μｍ
のニッケルを電着させ、全体で２２μｍのニッケル皮膜
７を被覆する。Further, as a second electrodeposition process, a current density 2
The 0A / dm 2, 20μm in 5 minutes throughout the plating site
Is electrodeposited to cover a nickel film 7 having a total thickness of 22 μm.
【００２３】実施例２ 実施例１と同様のファイバ素材１を用い、該素材の端末
から約３０mmのＵＶ樹脂被覆材をはぎ取った後に、光フ
ァイバの先端部を約８度の斜め研磨加工する。これによ
って、光ファイバ先端面のカーボンを完全に除去する。Example 2 Using the same fiber material 1 as in Example 1, after stripping off about 30 mm of the UV resin coating material from the end of the material, the tip of the optical fiber is skewed by about 8 degrees. As a result, carbon on the optical fiber tip surface is completely removed.
【００２４】 ＵＶ樹脂被覆材の非除去部の前端とカー
ボン皮膜の境に導電性塗料を厚く塗布した後、実施例１
と同様のスルファミン酸ニッケル浴を用いて電流密度５
A/dm2で３分間電着処理を行なう。この場合には、実施
例１と異なり光ファイバ素材の引き上げを行なわない。
この第１次電着処理により、カーボン皮膜表面に３μｍ
のニッケルが被覆される。After a thick conductive coating was applied to the boundary between the carbon film and the front end of the non-removed portion of the UV resin coating material,
Current density 5 using the same nickel sulfamate bath
Perform electrodeposition at A / dm 2 for 3 minutes. In this case, unlike the first embodiment, the optical fiber material is not pulled up.
By this first electrodeposition treatment, the surface of the carbon film was 3 μm thick.
Of nickel is coated.
【００２５】 ついで第２次電着処理として、電流密度
２０A/dm2により、被めっき部位全体に４分間で１６μ
ｍのニッケルを電着させ、全体で１９μｍのニッケル皮
膜を被覆する。Next, as a second electrodeposition treatment, a current density of 20 A / dm 2 was applied to the entire portion to be plated in 16 μm for 4 minutes.
m of nickel is electrodeposited and a total of 19 μm nickel coating is applied.
【００２６】[0026]
【発明の効果】本発明の光ファイバ心線は、光ファイバ
先端部が平坦面，傾斜面又は半球面であり、この先端部
を除いて後方のプラスチック被覆材までカーボン皮膜に
金属皮膜を有する。これにより、本発明の光ファイバ心
線をＬＤと直接又はレンズを介して接合する際に、ＬＤ
モジュールのケースに半田付け又はスポット溶接で固着
でき、ＬＤモジュールはヒートサイクルで変動すること
が少なくなる。The optical fiber core of the present invention has a flat surface, an inclined surface or a hemispherical surface at the tip of the optical fiber, and has a carbon coating and a metal coating up to the rear plastic coating material except for the tip. Thereby, when joining the optical fiber core wire of the present invention to the LD directly or through a lens,
It can be fixed to the module case by soldering or spot welding, and the LD module is less likely to fluctuate in a heat cycle.
【００２７】 本発明の光ファイバ心線は、金属皮膜の
下にカーボン皮膜が存在することにより、折り曲げ，引
張りなどの機械的応力に対して強い。この光ファイバ心
線は、プラスチック被覆材をはぎ取った部分にカーボン
皮膜と金属皮膜が存在することにより、ＬＤと結合する
際に金属皮膜に加えて緻密な組織のカーボン皮膜によっ
て光ファイバの表面に傷が付くことを防止する。The optical fiber core wire of the present invention is resistant to mechanical stress such as bending and tension due to the presence of the carbon film under the metal film. This optical fiber core wire has a carbon film and a metal film at the part where the plastic coating material is stripped off, so that the surface of the optical fiber is damaged by the carbon film having a dense structure in addition to the metal film when being bonded to the LD. To prevent sticking.
【００２８】 本発明方法では、無電解めっきを施すこ
となしに、電気めっきによって直接光ファイバのカーボ
ン皮膜上に金属層を形成できる。電気めっきを施す前
に、光ファイバの先端部を平面研磨，斜め研磨又は先球
加工することにより、その部分におけるカーボン皮膜を
除去するために特別なめっき遮蔽措置をしなくてもよ
い。In the method of the present invention, a metal layer can be formed directly on a carbon film of an optical fiber by electroplating without performing electroless plating. Prior to electroplating, the tip of the optical fiber may be planarly polished, slanted polished, or beveled, so that no special plating shielding measures need to be taken to remove the carbon film at that portion.
【００２９】 本発明方法では、プラスチック被覆材の
端部又は中間部位の被覆をはぎ取り、はぎ取られていな
い部分とカーボン皮膜の境目に電気めっきの電解液が浸
潤しないように導電性塗料を塗布することにより、該導
電性塗料によってカーボン皮膜への通電も容易になる。
導電性塗料を介して電気めっきを施す際に、カーボン層
の電気抵抗は１０4Ω程度の高さであり、直接露出カー
ボン層全体に均一なめっき層を形成することが困難であ
れば、光ファイバ素材の根元部分に電気めっき層が形成
されるとともに上方へ引き上げるか、又は電極を逆円錐
状に形成すればよい。In the method of the present invention, the coating of the edge or the intermediate portion of the plastic coating material is stripped off, and a conductive paint is applied so that the electrolytic solution for electroplating does not infiltrate at the boundary between the unstripped portion and the carbon film. Thus, the conductive coating also facilitates energization of the carbon film.
When performing electroplating via a conductive paint, the electrical resistance of the carbon layer is as high as about 10 4 Ω, and if it is difficult to form a uniform plating layer over the entire directly exposed carbon layer, light The electroplating layer may be formed at the root of the fiber material and pulled up, or the electrodes may be formed in an inverted conical shape.
【図１】 本発明で用いる光ファイバ素材の拡大横断面
図である。FIG. 1 is an enlarged cross-sectional view of an optical fiber material used in the present invention.
【図２】 前端部のプラスチック被覆材をはぎ取って先
球加工した光ファイバ素材の縦断面図である。FIG. 2 is a longitudinal sectional view of an optical fiber material obtained by stripping a plastic coating material at a front end portion and processing a front sphere.
【図３】 光ファイバ素材の電気めっき状態を示す概略
横断面図である。FIG. 3 is a schematic cross-sectional view showing an electroplating state of an optical fiber material.
【図４】 本発明方法で得た光ファイバ心線の縦断面図
である。FIG. 4 is a longitudinal sectional view of an optical fiber core obtained by the method of the present invention.
１ 光ファイバ素材 ２ 光ファイバ ３ カーボン皮膜 ４ プラスチック被覆材 ５ 光ファイバ心線 ７ 金属皮膜 ９ 導電性塗料 Reference Signs List 1 optical fiber material 2 optical fiber 3 carbon coating 4 plastic coating material 5 optical fiber core wire 7 metal coating 9 conductive paint
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平２−251804（ＪＰ，Ａ) 特開 平２−166410（ＪＰ，Ａ) 特開 昭60−147707（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) G02B 6/44 G02B 6/42 G02B 6/24 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-251804 (JP, A) JP-A-2-166410 (JP, A) JP-A-60-147707 (JP, A) (58) Field (Int.Cl. 6 , DB name) G02B 6/44 G02B 6/42 G02B 6/24
Claims (2)
覆材を有する光ファイバ素材を用い、その先端部からプ
ラスチック被覆材を必要長さだけはぎ取り、光ファイバ
の先端部をアーク放電や研磨加工などで平面研磨，斜め
研磨又は先球加工し、それと同時に先端部のカーボン皮
膜を除去した後に、プラスチック被覆材の非除去部の前
端とカーボン皮膜の境に導電性塗料を塗布し、ついでそ
のままめっき電解液に浸漬して給電することにより、通
電可能なカーボン皮膜の部分だけに電気めっきを施すと
ともに、前記の導電性塗料によって電気めっきの電解液
がプラスチック被覆材に浸潤することを防止し、且つ電
気めっきの際にカーボン皮膜への通電を容易にする光フ
ァイバ心線の製造方法。 1. An optical fiber material having a carbon coating and a plastic coating material as a whole is used. The plastic coating material is stripped off from the tip by a required length, and the tip of the optical fiber is flat-polished by arc discharge or polishing. , Diagonal polishing or tipping, and simultaneously removing the carbon film at the tip, apply a conductive paint to the boundary between the carbon film and the front end of the non-removed part of the plastic coating material, and then immerse it in the plating electrolyte as it is by to the power supply, through
Electroplating is performed only on the portion of the carbon film that is capable of being electroplated, and the conductive paint prevents the electrolytic solution for electroplating from infiltrating the plastic coating material, and energizes the carbon film during electroplating. A method of manufacturing an optical fiber core that facilitates.
カーボン皮膜の境に導電性塗料を厚めに塗布してから、
この状態で電気めっきの電解液に浸漬してめっき層が形
成され始めるとともにファイバ素材を上方へ引き上げ、
ついで再度電解液に浸漬して厚い金属皮膜を被覆する請
求項１記載の製造方法。 2. A method for applying a thick conductive paint to the boundary between the front end of the non-removed portion of the plastic coating material and the carbon film,
In this state, immersion in the electrolytic solution of electroplating starts the formation of the plating layer and at the same time pulls up the fiber material,
Then method of claim 1, wherein the coating the thicker metal coating is immersed again in the electrolytic solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3081759A JP2942374B2 (en) | 1991-03-19 | 1991-03-19 | Manufacturing method of optical fiber core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3081759A JP2942374B2 (en) | 1991-03-19 | 1991-03-19 | Manufacturing method of optical fiber core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04291214A JPH04291214A (en) | 1992-10-15 |
| JP2942374B2 true JP2942374B2 (en) | 1999-08-30 |
Family
ID=13755378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3081759A Expired - Fee Related JP2942374B2 (en) | 1991-03-19 | 1991-03-19 | Manufacturing method of optical fiber core |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2942374B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013511748A (en) * | 2009-11-18 | 2013-04-04 | ボストン サイエンティフィック サイムド，インコーポレイテッド | Method and apparatus for a distal end portion of an optical fiber having a substantially spherical shape |
-
1991
- 1991-03-19 JP JP3081759A patent/JP2942374B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04291214A (en) | 1992-10-15 |
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