JPS638062B2 - - Google Patents
Info
- Publication number
- JPS638062B2 JPS638062B2 JP56124995A JP12499581A JPS638062B2 JP S638062 B2 JPS638062 B2 JP S638062B2 JP 56124995 A JP56124995 A JP 56124995A JP 12499581 A JP12499581 A JP 12499581A JP S638062 B2 JPS638062 B2 JP S638062B2
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- metal
- coating
- flame
- coated optical
- 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
Links
- 239000013307 optical fiber Substances 0.000 claims description 51
- 238000000576 coating method Methods 0.000 claims description 47
- 229910052751 metal Inorganic materials 0.000 claims description 46
- 239000002184 metal Substances 0.000 claims description 46
- 239000011248 coating agent Substances 0.000 claims description 40
- 238000000034 method Methods 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 150000002736 metal compounds Chemical class 0.000 claims description 12
- 229910044991 metal oxide Inorganic materials 0.000 claims description 10
- 150000004706 metal oxides Chemical class 0.000 claims description 10
- 229940126062 Compound A Drugs 0.000 claims 1
- NLDMNSXOCDLTTB-UHFFFAOYSA-N Heterophylliin A Natural products O1C2COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC2C(OC(=O)C=2C=C(O)C(O)=C(O)C=2)C(O)C1OC(=O)C1=CC(O)=C(O)C(O)=C1 NLDMNSXOCDLTTB-UHFFFAOYSA-N 0.000 claims 1
- 230000007062 hydrolysis Effects 0.000 claims 1
- 238000006460 hydrolysis reaction Methods 0.000 claims 1
- 239000002994 raw material Substances 0.000 description 13
- 239000007789 gas Substances 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 8
- 238000009987 spinning Methods 0.000 description 7
- 239000010408 film Substances 0.000 description 4
- 238000005979 thermal decomposition reaction Methods 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000011247 coating layer Substances 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000011135 tin Substances 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- CZRDZAGTSCUWNG-UHFFFAOYSA-M chloro(dimethyl)tin Chemical compound C[Sn](C)Cl CZRDZAGTSCUWNG-UHFFFAOYSA-M 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- QQTGJVBUIOTPGZ-UHFFFAOYSA-N CCC[Zn]CCC Chemical compound CCC[Zn]CCC QQTGJVBUIOTPGZ-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 206010067482 No adverse event Diseases 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Chemical compound [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- KBJMLQFLOWQJNF-UHFFFAOYSA-N nickel(ii) nitrate Chemical compound [Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O KBJMLQFLOWQJNF-UHFFFAOYSA-N 0.000 description 1
- 150000002902 organometallic compounds Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- OTRPZROOJRIMKW-UHFFFAOYSA-N triethylindigane Chemical compound CC[In](CC)CC OTRPZROOJRIMKW-UHFFFAOYSA-N 0.000 description 1
- JLTRXTDYQLMHGR-UHFFFAOYSA-N trimethylaluminium Chemical compound C[Al](C)C JLTRXTDYQLMHGR-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc 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
【発明の詳細な説明】
〓産業上の利用分野〓
本発明は、光フアイバの外周に金属または金属
酸化物による被膜を有する被覆光フアイバの製造
方法に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for manufacturing a coated optical fiber having a metal or metal oxide coating on the outer periphery of the optical fiber.
〓従来の技術〓
一般に、石英ガラス系光フアイバの外周に金属
コーテイングしてなる金属被覆光フアイバは、当
該金属被覆層により、機械的特性、耐熱耐火特性
などが向上し、水中でのOH基による影響も減じ
られるが、その反面、ガラス金属との熱膨張率
差、表面張力差が大きいことにより、通常の手段
では金属被覆光フアイバをつくるのが難しい。〓Conventional technology〓 In general, metal-coated optical fibers, which are made by coating the outer periphery of a silica glass optical fiber with a metal, have improved mechanical properties, heat and fire resistance properties, etc. due to the metal coating layer, and are resistant to OH groups in water. However, on the other hand, it is difficult to produce a metal-coated optical fiber by conventional means due to the large difference in thermal expansion coefficient and surface tension between glass and metal.
かかる事情に鑑み、例えば光フアイバと金属被
覆層との中間層として、熱分解法あるいはスパツ
タリング法などにより、光フアイバ外周にあらか
じめ極薄い金属被膜、金属酸化物被膜などを形成
しておき、その後、当該１次金属被覆光フアイバ
を溶融金属ルツボに通して所定厚の金属被覆層を
形成する方法が採用されている。 In view of this, for example, as an intermediate layer between the optical fiber and the metal coating layer, an extremely thin metal coating, metal oxide coating, etc. is formed in advance on the outer periphery of the optical fiber by a thermal decomposition method or a sputtering method, and then, A method is adopted in which the primary metal-coated optical fiber is passed through a molten metal crucible to form a metal coating layer of a predetermined thickness.
第１図は、上述した方法により金属被覆光フア
イバをつくる際の１例である。 FIG. 1 is an example of manufacturing a metal coated optical fiber by the method described above.
第１図の方法においては、紡糸炉１、熱分解型
の金属被覆装置２、コーテイングダイス付の金属
溶融ルツボ３、キヤプスタン４などが所定の製造
ラインに沿つて配設されており、このうち、金属
被覆装置２は、導入口５、排気口６を備えた反応
槽７と、反応槽７を加熱するための加熱炉８と、
導入口５に連結された供給槽９とよりなり、供給
槽９内には気相化される原料（金属化合物）１０
が収容されているとともに、ルツボ３内には溶融
金属１１が収容されている。 In the method shown in FIG. 1, a spinning furnace 1, a pyrolysis type metal coating device 2, a metal melting crucible 3 with a coating die, a capstan 4, etc. are arranged along a predetermined production line. The metal coating device 2 includes a reaction tank 7 having an inlet 5 and an exhaust port 6, a heating furnace 8 for heating the reaction tank 7,
It consists of a supply tank 9 connected to an inlet 5, and a raw material (metal compound) 10 to be vaporized in the supply tank 9.
is housed in the crucible 3, and a molten metal 11 is housed in the crucible 3.
第１図の方法においては、はじめ、石英ガラス
系のプリフオームロツド１２が、紡糸炉１を介し
た加熱延伸手段により光フアイバ１３ａに加工さ
れ、つぎに、紡糸直後の光フアイバ１３ａが反応
槽７内で１次金属被覆され、その後、当該１次金
属被覆光フアイバ１３ｂが溶融金属ルツボ３を介
して２次金属被覆され、所望被覆厚の２次金属被
覆光フアイバ１３ｃがつくられる。 In the method shown in FIG. 1, a silica glass preform rod 12 is first processed into an optical fiber 13a by heating and drawing means via a spinning furnace 1, and then the optical fiber 13a immediately after spinning is processed into a reaction tank. After that, the primary metal-coated optical fiber 13b is subjected to a secondary metal coating via the molten metal crucible 3, thereby producing a secondary metal-coated optical fiber 13c having a desired coating thickness.
〓発明が解決しようとする問題点〓
第１図の方法によるとき、反応槽７の内部が加
熱炉８を介して所定原料１０の熱分解に必要な温
度に加熱されているので、供給槽９からの気相原
料で満たされている反応槽７内を光フアイバ１３
ａが通過するとき、その光フアイバ外周に付着し
た原料１０は熱分解され、かくて、光フアイバ１
３ａの外周に第１次の金属皮膜が形成されるが、
この場合、100μm単位の極細である光フアイバ１
３ａの表面積が、反応槽７の内面積に比べきわめ
て小さいため、殆どの分解生成物（金属）は光フ
アイバ１３ａよりも反応槽７の内面や導入口５、
排気口６などに付着するといつた被覆効率の低
下、原料ロスが生じ、殊に、紡糸工程と連続して
上記の金属被覆を長時間実施するとき、漸増する
金属付着物により反応槽７の導入口５、排気口６
などが流路閉塞をきたし、紡糸加工をも含めた光
フアイバの金属被覆が実施できなくなる。<Problems to be Solved by the Invention> When using the method shown in FIG. An optical fiber 13 runs through the reaction tank 7 filled with gas phase raw materials from
When a passes through, the raw material 10 attached to the outer circumference of the optical fiber is thermally decomposed, and thus the optical fiber 1
A first metal film is formed on the outer periphery of 3a,
In this case, the optical fiber 1, which is extremely thin in units of 100 μm,
Since the surface area of the fiber 3a is extremely small compared to the inner area of the reaction tank 7, most of the decomposition products (metals) are deposited on the inner surface of the reaction tank 7, the inlet 5, and the inlet 5, rather than the optical fiber 13a.
If it adheres to the exhaust port 6, etc., the coating efficiency will decrease and raw material loss will occur.Especially when the above-mentioned metal coating is carried out continuously with the spinning process for a long time, the gradually increasing amount of metal deposits will cause the introduction of the reaction tank 7. Port 5, exhaust port 6
etc., resulting in blockage of the flow path, making it impossible to carry out metal coating of optical fibers, including spinning processing.
もちろん、気相化される原料１０の濃度を下げ
ることにより、上記のごとき不都合はいくぶん緩
和されるが、こうした手段は根本的な対策でな
く、しかも、原料濃度を低下させたことにより所
定品質の金属被膜は形成できない。 Of course, the above-mentioned disadvantages can be alleviated to some extent by lowering the concentration of the raw material 10 to be vaporized, but such measures are not fundamental countermeasures. Metal coatings cannot be formed.
本発明は光フアイバの外周に金属または金属酸
化物による被膜を形成する被覆光フアイバ製造方
法において、既述の問題点を解決して合理的に被
覆光フアイバを製造することを目的とする。 An object of the present invention is to solve the above-mentioned problems and rationally manufacture a coated optical fiber in a method for manufacturing a coated optical fiber in which a coating of metal or metal oxide is formed on the outer periphery of the optical fiber.
〓問題点を解決するための手段〓
本発明は所期の目的を達成するため、光フアイ
バの外周に、金属または金属酸化物による１層ま
たはそれ以上の被膜を形成する被覆光フアイバの
製造方法において、金属化合物を分解している火
炎中に光フアイバを通してその外周に上記被膜を
形成することを特徴とする。〓Means for Solving the Problems〓 In order to achieve the desired object, the present invention provides a method for manufacturing a coated optical fiber, which forms one or more layers of metal or metal oxide on the outer periphery of the optical fiber. The method is characterized in that an optical fiber is passed through a flame that is decomposing a metal compound, and the above coating is formed on the outer periphery of the optical fiber.
〓実施例〓
以下、本発明に係る被覆光フアイバの実施例に
つき、第２図を参照して説明する。〓Example〓 Hereinafter, an example of the coated optical fiber according to the present invention will be described with reference to FIG.
第２図に示す本発明方法の１実施例において、
紡糸炉１、金属溶融ルツボ３、キヤプスタン４な
どは、前記第１図で述べたと同じであるが、紡糸
炉１と金属溶融ルツボ３との間に配設された金属
被覆装置１４は、既述のものと相違する。 In one embodiment of the method of the invention shown in FIG.
The spinning furnace 1, metal melting crucible 3, capstan 4, etc. are the same as those described in FIG. different from that of
すなわち金属被覆装置１４は、導入管１５、導
出管１６を備えた原料（金属化合物）１７の供給
槽１８と、上記導出管１６を介して該供給槽１８
と連結された多重管構造等のバーナ１９と、バキ
ユーム管２０などを備えた排気系２１とからな
り、バーナ１９とバキユーム管２０とは、光フア
イバ走行ラインを挟むように互いに対向して配置
されている。 That is, the metal coating device 14 includes a supply tank 18 for the raw material (metal compound) 17, which is provided with an inlet pipe 15 and an outlet pipe 16, and a supply tank 18 for the raw material (metal compound) 17, which is provided with an inlet pipe 15 and an outlet pipe 16.
It consists of a burner 19 having a multi-tube structure connected to a burner 19, and an exhaust system 21 including a vacuum tube 20, etc., and the burner 19 and the vacuum tube 20 are arranged opposite to each other so as to sandwich the optical fiber running line. ing.
第２図において本発明方法を実施するとき、紡
糸炉１を介した加熱延伸により石英ガラス系のプ
リフオームロツド１２を光フアイバ１３ａに加工
した後、紡糸炉１とキヤプスタン４との間におい
て光フアイバ１３ａを被覆するが、金属被覆装置
１４を介してて行なう第１次の金属被覆または金
属酸化物被覆（以下単に被覆ともいう）では、バ
ーナ１９の火炎１９′により供給槽１８からの原
料（金属化合物）１０を熱分解または火炎加水分
解し、その火炎１９′中に光フアイバ１３ａを通
すことにより、光フアイバ１３ａの外周へ瞬時に
薄い金属被膜または金属酸化物被膜（以下単に被
膜ともいう）を形成する。 In carrying out the method of the present invention in FIG. In the first metal coating or metal oxide coating (hereinafter simply referred to as coating) which coats the fiber 13a through the metal coating device 14, the flame 19' of the burner 19 causes the raw material ( By thermally decomposing or flame hydrolyzing the metal compound) 10 and passing the optical fiber 13a through the flame 19', a thin metal coating or metal oxide coating (hereinafter also simply referred to as coating) is instantly formed on the outer periphery of the optical fiber 13a. form.
この際、バキユーム管２０をもつ排気系２１で
は、火炎１９′の方向を制御したり、該火炎１
９′中の予熱や余分な分解生成物を除去するので
あり、こうした手段も併用しながら上記被膜を形
成する。 At this time, in the exhaust system 21 having the vacuum tube 20, the direction of the flame 19' can be controlled, and the direction of the flame 19' can be controlled.
The above-mentioned coating is formed by preheating the wafer 9' and removing excess decomposition products.
かくて被覆された１次被覆光フアイバ１３ｂ
は、コーテイングダイス付の金属溶融ルツボ３内
を通過し、ここで溶融金属１１による金属被膜
（以下単に被膜ともいう）が形成されて２次被覆
光フアイバ１３ｃとなる。 The thus coated primary coated optical fiber 13b
passes through a metal melting crucible 3 equipped with a coating die, where a metal coating (hereinafter also simply referred to as coating) is formed by the molten metal 11 to become a secondary coated optical fiber 13c.
原料１７たる金属化合物はジメチルチンクロラ
イドのほか、トリメチルアルミニウム、トリエチ
ルインジウム、ジプロピル亜鉛等の有機金属化合
物が採用できる。 As the metal compound serving as the raw material 17, in addition to dimethyltin chloride, organometallic compounds such as trimethylaluminum, triethylindium, and dipropylzinc can be employed.
他にも、塩化アルミニウム、硝酸ニツケル、硝
酸銅のような水溶性金属化合物を噴霧してバーナ
に導入してもよい。 Alternatively, a water-soluble metal compound such as aluminum chloride, nickel nitrate, or copper nitrate may be sprayed and introduced into the burner.
溶融金属１１の材料としてはアルミニウム、
銅、鉛、亜鉛、錫、ニツケル、銀、あるいはこれ
らの合金など、各種のものが採用できる。 The material of the molten metal 11 is aluminum;
Various materials such as copper, lead, zinc, tin, nickel, silver, or alloys thereof can be used.
前記１次被覆時において、光フアイバ１３ａの
外周に還元性の金属被膜を形成するとき、火炎１
９′は水素炎とする。 During the primary coating, when forming a reducing metal coating on the outer periphery of the optical fiber 13a, the flame 1
9' is a hydrogen flame.
かかる還元性金属被膜の形成時、火炎１９′の
直下に酸化防止手段を講じておくのがよい。 When forming such a reducible metal film, it is preferable to take measures to prevent oxidation immediately below the flame 19'.
より具体的には、第２図のごとく、ガス導入口
２２およびガス排出口２３を備えたガスシールド
管２４を火炎１９′の直下に配置しておき、還元
性ガス、不活性ガスなどでパージされた当該シー
ルド管２４内に１次被覆光フアイバ１３ｂを導入
してこれを冷却すればよい。 More specifically, as shown in FIG. 2, a gas shield pipe 24 equipped with a gas inlet 22 and a gas outlet 23 is placed directly below the flame 19', and is purged with reducing gas, inert gas, etc. The primary coated optical fiber 13b may be introduced into the shielded tube 24 and cooled.
前記１次被覆時において、金属酸化物被膜を形
成するとき、酸素などの酸化性ガスと、可燃性ガ
ス（水素、プロパン、都市ガスなど）との混合ガ
スにより火炎１９′を発生させるようになる。 During the primary coating, when forming a metal oxide film, a flame 19' is generated by a mixed gas of an oxidizing gas such as oxygen and a combustible gas (hydrogen, propane, city gas, etc.). .
その他の事項として、上記被覆は１次だけとし
たり、あるいは１次から２次までを行うなど、自
由に選択できるが、１次、２次の両被覆を行なう
場合、１次被膜、２次被膜は同種としたり、ある
いは異種とする。 As for other matters, the above-mentioned coating can be selected freely, such as only the primary coating or from the primary to the secondary coating, but if both primary and secondary coatings are performed, the primary coating and the secondary coating. may be of the same species or may be of different species.
つぎに、本発明の具体的実施例を説明する。 Next, specific examples of the present invention will be described.
石英ガラス系のプリフオームロツド１２を線速
30ｍ／minで紡糸して外径125μmの光フアイバ１
３ａをつくり、これと同期して、あるいは、これ
よりも先行して、（CH3）2SnCl2（ジメチルチンク
ロライド）の蒸気中にキヤリアガスとしての水素
ガスを通して気相の原料１７をつくるとともに、
その原料１７をバーナ１９により燃焼して火炎１
９′を発生させておき、当該火炎１９′中に上記光
フアイバ１３ａを通してその外周に薄い１次被膜
（酸化錫の稠密な薄膜）を蒸着形成した。 Linear speed of quartz glass preform rod 12
Optical fiber 1 with an outer diameter of 125 μm was spun at 30 m/min.
3a, and at the same time or in advance of this, hydrogen gas as a carrier gas is passed into the vapor of (CH 3 ) 2 SnCl 2 (dimethyltin chloride) to produce a gas phase raw material 17,
The raw material 17 is combusted by a burner 19 to produce a flame 1
The optical fiber 13a was passed through the flame 19' to form a thin primary coating (a dense thin film of tin oxide) on its outer periphery.
この際の熱分解反応式を示すと、次式の通りで
ある。 The thermal decomposition reaction formula at this time is as shown in the following formula.
（CH3）2SnCl2→Sn＋2CH3Cl
→Sn＋O2→SnO2
つぎに、700℃でアルミニウムを溶解している
溶融金属ルツボ３中に上記の１次被覆光フアイバ
１３ｂを通して厚さ20μmの２次被膜を形成した。 (CH 3 ) 2 SnCl 2 →Sn+2CH 3 Cl →Sn+O 2 →SnO 2Next , the above-mentioned primary coated optical fiber 13b is passed through the molten metal crucible 3 in which aluminum is melted at 700°C to form a secondary coated fiber with a thickness of 20 μm. A film was formed.
上記２次被覆後、１次被膜を重量法で測定した
ところ、その膜厚は約30オングストロームであつ
た。 After the secondary coating, the primary coating was measured gravimetrically and found to have a thickness of about 30 angstroms.
上述した紡糸工程から被覆工程までを連続５時
間実施したが、熱分解生成物による悪影響はみら
れず、良好な長尺被覆光フアイバを製造すること
ができた。 The process from the spinning process to the coating process described above was carried out continuously for 5 hours, but no adverse effects from the thermal decomposition products were observed, and a good long coated optical fiber could be manufactured.
〓発明の効果〓
以上説明した通り、本発明方法によるときは、
金属化合物を分解している火炎中に光フアイバを
通して所定の被覆を行なうから、火炎中の余剰分
解生成物による妨害がなく、ゆえに、金属被膜ま
たは金属酸化物被膜による被覆光フアイバの製造
を、長時間、問題なく実施することができ、しか
も、金属化合物原料、燃料ガスとして、種々のも
のが採用できるとか、製造設備も簡易なもので足
りるなど、製造時の自由な条件設定により、経済
性の向上をもはかることができ、さらに、火炎の
温度分布を調整して任意の熱分解温度を発現させ
得るから、光フアイバへの金属被膜または金属酸
化物被膜による被覆が効率よく行なえる。= Effect of the invention = As explained above, when the method of the present invention is used,
Since the optical fiber is passed through the flame in which the metal compound is being decomposed and the prescribed coating is applied, there is no interference from excess decomposition products in the flame, and therefore the production of coated optical fibers with metal coatings or metal oxide coatings can be carried out for a long time. It can be carried out without any problems in terms of time and cost, and it is economical because various conditions can be set at the time of manufacturing, such as the ability to use a variety of metal compound raw materials and fuel gases, and the need for simple manufacturing equipment. Furthermore, since the temperature distribution of the flame can be adjusted to achieve a desired thermal decomposition temperature, optical fibers can be efficiently coated with metal coatings or metal oxide coatings.
第１図は従来例の略示説明図、第２図は本発明
方法の１実施例を示した略示説明図である。
３……溶融金属ルツボ、１１……溶融金属、１
３ａ……光フアイバ、１３ｂ……１次被覆光フア
イバ、１３ｃ……２次被覆光フアイバ、１４……
金属被覆装置、１７……原料、１８……反応槽、
１９……バーナ、１９′……火炎、２０……バキ
ユーム管、２１……排気系。
FIG. 1 is a schematic explanatory diagram of a conventional example, and FIG. 2 is a schematic explanatory diagram showing one embodiment of the method of the present invention. 3... Molten metal crucible, 11... Molten metal, 1
3a... Optical fiber, 13b... Primary coated optical fiber, 13c... Secondary coated optical fiber, 14...
Metal coating device, 17... Raw material, 18... Reaction tank,
19... Burner, 19'... Flame, 20... Vacuum tube, 21... Exhaust system.
Claims (1)
による１層またはそれ以上の被膜を形成する被覆
光フアイバの製造方法において、金属化合物を分
解している火炎中に光フアイバを通してその外周
に上記被膜を形成することを特徴とする被覆光フ
アイバの製造方法。 ２ 金属化合物を熱分解する特許請求の範囲第１
項記載の被覆光フアイバの製造方法。 ３ 金属化合物を火炎加水分解させる特許請求の
範囲第１項記載の被覆光フアイバの製造方法。[Claims] 1. A method for manufacturing a coated optical fiber in which one or more layers of metal or metal oxide are formed on the outer periphery of the optical fiber, in which the optical fiber is passed through a flame that is decomposing the metal compound. A method for manufacturing a coated optical fiber, comprising forming the above-mentioned coating on the outer periphery of the coated optical fiber. 2 Claim 1 which thermally decomposes a metal compound
A method for producing a coated optical fiber as described in Section 1. 3. A method for producing a coated optical fiber according to claim 1, which comprises subjecting a metal compound to flame hydrolysis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56124995A JPS5826047A (en) | 1981-08-10 | 1981-08-10 | Manufacture of metal coated optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56124995A JPS5826047A (en) | 1981-08-10 | 1981-08-10 | Manufacture of metal coated optical fiber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5826047A JPS5826047A (en) | 1983-02-16 |
| JPS638062B2 true JPS638062B2 (en) | 1988-02-19 |
Family
ID=14899284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56124995A Granted JPS5826047A (en) | 1981-08-10 | 1981-08-10 | Manufacture of metal coated optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5826047A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59164653A (en) * | 1983-03-08 | 1984-09-17 | Sumitomo Electric Ind Ltd | Method for manufacturing metal-coated optical fiber |
| GB2150858B (en) * | 1983-12-06 | 1986-11-26 | Standard Telephones Cables Ltd | Optical fibres |
-
1981
- 1981-08-10 JP JP56124995A patent/JPS5826047A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5826047A (en) | 1983-02-16 |
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