JPS6061709A - Covered optical fiber - Google Patents

Covered optical fiber

Info

Publication number
JPS6061709A
JPS6061709A JP58170186A JP17018683A JPS6061709A JP S6061709 A JPS6061709 A JP S6061709A JP 58170186 A JP58170186 A JP 58170186A JP 17018683 A JP17018683 A JP 17018683A JP S6061709 A JPS6061709 A JP S6061709A
Authority
JP
Japan
Prior art keywords
optical fiber
hydrogen
compound
covered layer
covered
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.)
Pending
Application number
JP58170186A
Other languages
Japanese (ja)
Inventor
Masao Nishimura
西村　真雄
Akira Kitamura
北村　昶
Hisako Hori
堀　久子
Naoyuki Wada
和田　直行
Katsumi Orimo
折茂　勝巳
Nobuo Inagaki
稲垣　伸夫
Takao Kimura
隆男 木村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Furukawa Electric Co Ltd
Nippon Telegraph and Telephone Corp
Original Assignee
Furukawa Electric Co Ltd
Nippon Telegraph and Telephone Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Furukawa Electric Co Ltd, Nippon Telegraph and Telephone Corp filed Critical Furukawa Electric Co Ltd
Priority to JP58170186A priority Critical patent/JPS6061709A/en
Publication of JPS6061709A publication Critical patent/JPS6061709A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401—Optical cables
    • G02B6/4415—Cables for special applications
    • G02B6/4427—Pressure resistant cables, e.g. undersea cables

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Surface Treatment Of Glass Fibres Or Filaments (AREA)

Abstract

PURPOSE:To prevent an increase of a transmission loss caused by hydrogen of a covered layer of a quartz compound optical fiber by making the covered layer contain a compound having a reactivity to hydrogen. CONSTITUTION:In a covered optical fiber 10, a covered layer 4 is formed on the outside circumference of a covered layer 2. The covered layer 2 has one or both functions of primary coat and buffer coat, and the covered layer 4 has a protective function whose mechanical characteristic is excellent. When a prescribed compound is contained in the covered layer 2 and/or the covered layer 4, the prescribed compound reacts to hydrogen and comes to catch it, and accordingly, even if a lattice defect exists in an optical fiber, the caught hydrogen cannot invade into its optical fiber 1, by which an OH radical is not generated, therefore, a covered optical fiber whose transmission characteristic is stable is obtained extending over a long period of time in which an increase of a transmission loss is scarcely generated. As for the prescribed compound, namely, a compound having a reactivity to hydrogen, it is desirable to use that of a suit able material quality by adjusting it to a suitable quantity, and an organic peroxide can be exemplified. As for a content of the organic peroxide, 0.01- 5wt% is desirable against the covered layer containing it.

Description

【発明の詳細な説明】 本発明は被覆光ファイバの改良に関する。[Detailed description of the invention] The present invention relates to improvements in coated optical fibers.

被覆光ファイバの一般的なものは、コアおよびクラッド
が石英系のガラスからなり、その外周を覆う各種被覆層
がゴムまたはプラスチックからなる。A typical coated optical fiber has a core and a cladding made of quartz-based glass, and various coating layers covering the outer periphery made of rubber or plastic.

倒木ばその被覆層に関して、プライマリコート、バッフ
ァコート等は熱硬化性または紫外線硬化性の樹脂により
形成され、これらコート外周の保護層は熱可塑性樹脂に
より形成されている。Regarding the coating layers of fallen tree trunks, the primary coat, buffer coat, etc. are formed of thermosetting or ultraviolet curable resin, and the protective layer around the outer periphery of these coats is formed of thermoplastic resin.

ところで、上記被覆光ファイバの場合、通信用を主とし
て高性能のものが多（提供されてきたが、この種の被覆
光ファイバにおいて、水素に起因した光ファイバの伝送
ロス増が１３０μｍ、。By the way, in the case of the above-mentioned coated optical fibers, many high-performance ones have been provided mainly for communication purposes, but in this kind of coated optical fibers, the increase in transmission loss due to hydrogen is 130 μm.

１．５５μｍなどの長波長帯域において発生することが
判明した。It was found that this phenomenon occurs in a long wavelength band such as 1.55 μm.

以下これについて説明すると、原因となる水素は光ファ
イバの被覆材である熱硬化性樹脂、紫外線硬化性樹脂等
において硬化後も残存するラジカル基、その他各種の官
能基が長期的に水とか酸素などと反応して発生すると思
われる。To explain this below, the hydrogen that causes this is radical groups that remain after curing in thermosetting resins, ultraviolet curable resins, etc. that are coating materials for optical fibers, and various other functional groups that are formed over the long term by water, oxygen, etc. It is thought to occur in response to

また、被覆光ファイバを構成要素とする光ケーブル中に
は、通常、テンションメンバ、ラップンース用などの金
属類が存在し、これら金属がイオン化傾向の差による電
位を発生し呆を゛分解させて水素を発生させたり、さら
に光ケーブル内に存在するシェリー混和物などの各種有
機物が前記メカニズムにより水など左反応して水素を発
生する場合がある。In addition, in optical cables that include coated optical fibers, there are usually metals such as tension members and wrap-arounds, and these metals generate potentials due to differences in ionization tendency, decomposing the fibers and releasing hydrogen. In addition, various organic substances such as sherry mixtures present in optical cables may react with water etc. to generate hydrogen by the above-mentioned mechanism.

既知の通り、水素はプラスチックや石英ガラスに対する
拡散係数がきわめて大きく、通常の使用温度下でも石英
系光フアイバ中への拡散によりＯＨ基を形成して前記伝
送ロス増を惹き起こす。As is known, hydrogen has an extremely large diffusion coefficient with respect to plastics and quartz glass, and even under normal operating temperatures, it diffuses into the silica-based optical fiber to form OH groups, causing the increase in transmission loss.

もちろん、光ファイバのコアにまで拡散した水素すべて
が伝送ロス増をもたらすのではないが、光ファイバの主
成分である５ｉ（ｈやドーパントであるＧ　ｅ　Ｏｘな
どに格子欠陥、特に酸素欠陥があると、これらが侵入し
てきた水素を捕獲し、ロス原因のＯＨ基が容易に生成さ
れると思われる。Of course, not all the hydrogen that has diffused into the core of the optical fiber causes an increase in transmission loss, but there are lattice defects, especially oxygen defects, in 5i (h), the main component of optical fiber, and G e Ox, which is the dopant. It is thought that these elements capture the invading hydrogen, and OH groups, which cause loss, are easily generated.

本発明の目的は石英系光ファイバの被覆層に水素対策を
講じることにより伝送ロス増の生じがたい長期的に安定
な被覆光ファイバを提供することにある。An object of the present invention is to provide a coated optical fiber that is stable over a long period of time and does not increase transmission loss by taking measures against hydrogen in the coating layer of a silica-based optical fiber.

本発明の特徴とするところは、石英系からなる光ファイ
バの外周に、ゴムまたはプラスチックからなる１層以上
の被覆層が形成されている被ｌ光ファイバにおいて、少
なくとも１つの被覆層が水素と反応性のある化合物を含
有していることにある。A feature of the present invention is that in an optical fiber to be used, in which one or more coating layers made of rubber or plastic are formed on the outer periphery of an optical fiber made of quartz, at least one coating layer reacts with hydrogen. This is due to the fact that it contains a chemical compound.

つぎに本発明の各実施例を図面により説明する。Next, each embodiment of the present invention will be described with reference to the drawings.

第１図〜第３図は本発明における各種被覆光ファイバの
断面図であり、このうち第１図、第２図の被覆光ファイ
バ１０．２０は単心型を示し、第３図の被覆光ファイバ
３０は多心型を示す。1 to 3 are cross-sectional views of various coated optical fibers according to the present invention. Of these, the coated optical fibers 10 and 20 in FIGS. 1 and 2 are single-core type, and the coated optical fibers 10 and 20 in FIG. The fiber 30 shows a multicore type.

上記各光ファイバ１０　ｓ　２０　ｓ　３０において、
それぞれ光ファイバ１はコアおよびクラッドを備えた石
英系からなり、これら光ファイバ１はＭＣＶＤ法、ＶＡ
Ｄ法、ＯＶＤ法、ＰＣＶＤ法などの母材製造手段を介し
て製造されたプリフォームロッドを紡糸することにより
得られる。In each of the above optical fibers 10 s 20 s 30,
Each optical fiber 1 is made of quartz with a core and a cladding, and these optical fibers 1 are manufactured by MCVD method, VA
It is obtained by spinning a preform rod manufactured by a base material manufacturing method such as the D method, OVD method, or PCVD method.

光ファイバ１はコアが高屈折率のドープト石英クラッド
が純石英、またはコアが純石英、クラッドが低屈折率の
ドープト石英、あるいはコア（高屈折率）、クラッド（
低屈葬率）ともドープト石英からなる場合など、各種の
態様がある。The optical fiber 1 has a core of doped quartz with a high refractive index, a cladding of pure quartz, a core of pure quartz, a cladding of doped quartz with a low refractive index, or a core (high refractive index) and a cladding (
There are various types, such as those made of doped quartz with low refraction index.

光ファイバ１の：２７、クラッドに相対的な屈折率差を
もたせるドーパントとしては、ＧｅＯｓ、Ｐ２Ｏ６、Ａ
　ｔ２０ｓ、Ｂｔｕｓ、Ｆなどがあり、他にもＴ　ｉ　
（ｈ、ＴａｔＯｔ、５ｎＯｓ、ＮｂｔＯｓ、Ｚ　ｒ　Ｏ
ｘ、Ｙｂ＊Ｏｓ、Ｌａ＊（ｈ、Ｇ　ａｇｏ＊ｘ　Ａ　８
２０などが適宜に採用される。For optical fiber 1: 27, dopants that give a relative refractive index difference to the cladding include GeOs, P2O6, A
There are t20s, Btus, F, etc., and there are also T i
(h, TatOt, 5nOs, NbtOs, ZrO
x, Yb*Os, La*(h, Gago*x A 8
20 etc. may be adopted as appropriate.

マタ、光ファイバー１のコアのみが石英系でクラッドが
プラスチック製の場合もある。In some cases, only the core of the optical fiber 1 is made of quartz and the cladding is made of plastic.

第１図の被覆光ファイバ１０は光ファイ／ζ１の外周に
被覆層２が形成されている。In the coated optical fiber 10 shown in FIG. 1, a coating layer 2 is formed around the outer periphery of the optical fiber /ζ1.

第２図の被覆光ファイバ２０は光ファイ・り１の外周に
被覆層２が形成され、さらにその外周には液状の被覆層
３を介在して被覆層４が形成されている。In the coated optical fiber 20 shown in FIG. 2, a coating layer 2 is formed on the outer periphery of the optical fiber 1, and a coating layer 4 is further formed on the outer periphery with a liquid coating layer 3 interposed therebetween.

この被覆光ファイバ２ｏの場合、液状の被覆層３を備え
ていることにより、ルーズ型とかパイプ被覆型というこ
とができる。In the case of this coated optical fiber 2o, since it is provided with a liquid coating layer 3, it can be called a loose type or a pipe coated type.

第３図の被覆光ファイバ３ｏは互いに並列した複数本の
各光ファイバ１がそれぞれ被覆層２を有し、これらの外
周がテープ状をなす被覆層４により一括して被覆されて
いる。In the coated optical fibers 3o of FIG. 3, a plurality of optical fibers 1 arranged in parallel each have a coating layer 2, and their outer peripheries are collectively covered with a tape-shaped coating layer 4.

第１図の被覆光ファイバ１０において、被覆層２の外周
に被覆層４が形成されることがある。In the coated optical fiber 10 shown in FIG. 1, a coating layer 4 may be formed around the outer periphery of the coating layer 2.

各実施例で説明した各被覆光ファイバ１ｏ１２０．３０
において、被覆層２はプライマリコート、バッファコー
トのいずれか一方または両方の機能を有し、被覆層４は
機械的特性の優れた保護機能を有する。Each coated optical fiber 1o120.30 explained in each example
In this case, the coating layer 2 has the function of either a primary coat or a buffer coat, or both, and the coating layer 4 has a protective function with excellent mechanical properties.

また、被覆層２がプライマリコート、バッファフートの
いずれが一方の機能を有するだけであるとき、その他方
の機能を有する被覆層が当該被覆層の上にまたは下に形
成されることがある。Furthermore, when the covering layer 2 has only one function, either the primary coat or the buffer foot, a covering layer having the other function may be formed above or below the covering layer.

被覆層２．４の材料としては紫外線硬化性または熱硬化
性のエポキシ、ポリウレタン、ポリブタジェン、オルガ
ノポリシルキサンなど、゛さらに熱可塑性のナイロン、
ポリエチレン、ポリエステルエラストマ、弗素系樹脂な
どが用いられ、これらのうち、紫外線硬化性または熱硬
化性の樹脂は被覆層２用として主に用いられ、熱可塑性
の樹脂は被覆層４用として主に用いられる。Materials for the coating layer 2.4 include ultraviolet curable or thermosetting epoxy, polyurethane, polybutadiene, organopolysiloxane, etc., as well as thermoplastic nylon,
Polyethylene, polyester elastomer, fluorine resin, etc. are used. Among these, ultraviolet curable or thermosetting resins are mainly used for the coating layer 2, and thermoplastic resins are mainly used for the coating layer 4. It will be done.

被覆層３の材料としてはオイル（例えばシ、リコーン系
）とか、シェリー状物質とが、低粘性の樹脂組成物など
が用いられる。As the material for the coating layer 3, oil (eg silicone, silicone type), sherry-like substance, low viscosity resin composition, etc. are used.

本発明においては上述した各被覆層（プラスチンククラ
ツドも含む）のいずれか１つ、または任意の゛複数（２
つ以上から全数までを含む）のものが、水素と反応性の
ある化合物を含有している。In the present invention, any one or any plurality (two or more) of the above-mentioned coating layers (including plastic cladding) can be used.
(one or more up to and including all) contain compounds that are reactive with hydrogen.

上記被覆層の少なくとも１つ以上が水素と反応性のある
化合物を含有している場合、例えば被覆層２および／ま
たは被覆層３および／または被覆層４が所定の化合物を
含有している場合、光ファイバ１の周囲に水素の発生す
る事態が生じたとしても、被覆層中の所定化合物が水素
と反応してこれを捕獲するようになり、したがって光フ
ァイバ１に格子欠陥があるとしても、上記のごとく捕獲
された水素はその光フアイバ１中へ侵入できず、これに
より問題のＯＨ基は生成されず、故に伝送ロス増の生じ
がたい長期にわたって伝送特性の安定した被覆光ファイ
バとなり得る。When at least one of the coating layers contains a compound reactive with hydrogen, for example, when coating layer 2 and/or coating layer 3 and/or coating layer 4 contains a predetermined compound, Even if hydrogen were to be generated around the optical fiber 1, the predetermined compound in the coating layer would react with the hydrogen and capture it. Therefore, even if the optical fiber 1 has lattice defects, the above-mentioned The captured hydrogen cannot enter into the optical fiber 1, thereby preventing the production of problematic OH groups, and therefore making it possible to obtain a coated optical fiber with stable transmission characteristics over a long period of time, with no increase in transmission loss.

上記任意部の、または任意数の被覆層に含有される所定
化合物、すなわち水系と反応性のある化合物としては、
適当な材質のものを適量にへ 加ＨＬ　−ｃ　用イルのがよく、当該化合物としてこれ
に限定されるものでないが、有機過酸化物を例示するこ
とができる。The predetermined compound contained in the above-mentioned arbitrary part or arbitrary number of coating layers, that is, a compound reactive with a water system, is as follows:
It is preferable to add an appropriate amount of a suitable material to a compound for HL-c, and the compound is not limited thereto, but organic peroxides can be exemplified.

その有機過酸化物としては、ケトンパーオキサイド、パ
ーオキシヶータル、ハイドロパーオキサイド、ジアルキ
ルパーオキサイド、バーオキシエステルなど、所望のも
のが用いられる。As the organic peroxide, a desired one such as ketone peroxide, peroxyketal, hydroperoxide, dialkyl peroxide, peroxy ester, etc. can be used.

水素と反応性のある化合物、例えば上記有機過酸化物の
含有量は、これを含有する被覆層に対し、００１〜５重
量％であることが望ましい。The content of a compound reactive with hydrogen, such as the above-mentioned organic peroxide, is desirably 0.01 to 5% by weight based on the coating layer containing the compound.

その理由は、０．０１重蓋％未満では水素のトラップ効
果が乏しく、５重％を超過すると被覆層が劣化するから
である。The reason for this is that if it is less than 0.01% by weight, the hydrogen trapping effect is poor, and if it exceeds 5% by weight, the coating layer will deteriorate.

有機過酸化物を含有させる被覆層の材質としては紫外硬
化性樹脂がよく、その理由は被覆層の成形温度による。The material for the coating layer containing the organic peroxide is preferably an ultraviolet curable resin, and the reason for this depends on the molding temperature of the coating layer.

つまり有機過酸化物は、その分解温度が例えば１００℃
以上のものを用いたとしても熱硬化性樹脂や熱可塑性樹
脂の成形温度はほとんどの場合２００℃以上であり、こ
の成形温度により大部分の有機過酸化物が分解されてし
まう。In other words, the decomposition temperature of organic peroxides is, for example, 100°C.
Even if the above materials are used, the molding temperature of thermosetting resins and thermoplastic resins is 200° C. or higher in most cases, and most of the organic peroxide is decomposed at this molding temperature.

もちろん有機過酸化物が分解されると、水素トラップ効
果は前記分解した分だけ消失し、被覆層の硬化特性、硬
化後の機械的特性も低下する。Of course, when the organic peroxide is decomposed, the hydrogen trapping effect disappears by the amount of decomposition, and the curing properties of the coating layer and the mechanical properties after curing also deteriorate.

また、熱硬化性あるいは熱硬化性樹脂において低温成形
可能なものは少数に限られるので材料の選択範囲が狭ま
る。In addition, only a few thermosetting resins or thermosetting resins can be molded at low temperatures, which narrows the range of materials to choose from.

それに対する紫外線硬化性樹脂の場合、硬化時の温度を
例えば１００℃以下のような低温に保っこ、とはきわめ
て容易であり、したがって有機過酸化物の分解がほとん
ど起らず、水系トラップ効果が充分に確保できる。On the other hand, in the case of UV-curable resins, it is extremely easy to maintain the temperature during curing at a low temperature, for example, 100°C or less, so the decomposition of organic peroxides hardly occurs and the aqueous trapping effect is reduced. Can be secured sufficiently.

紫外線硬化性樹脂については前記でも述べたが、アクリ
ル系、不飽和ポリエステル系、ポリエンチオール系、カ
チオン重合系など、公知のものを用いることができる。As for the ultraviolet curable resin, as mentioned above, known ones such as acrylic type, unsaturated polyester type, polyenethiol type, and cation polymerization type can be used.

有機過酸化物を含有している被覆層が紫外線硬化性樹脂
からなる場合でも、その有機過酸化物はこれの分解温度
（半減期が１０時間となる温度）が１００℃以上である
のがよく、これにより被覆層硬化成形時における有機過
酸化物の分解がさらに抑制される。Even when the coating layer containing an organic peroxide is made of an ultraviolet curable resin, the organic peroxide preferably has a decomposition temperature (temperature at which the half-life is 10 hours) of 100°C or higher. This further suppresses the decomposition of the organic peroxide during curing and molding of the coating layer.

また、被覆層が分解温度の異なる複数種の有機過酸化物
を含有していると、水素の捕獲に持続性が生じ、より長
い期間にわたって水素トラップ効果を発揮させることが
できる。Furthermore, when the coating layer contains a plurality of types of organic peroxides having different decomposition temperatures, hydrogen capture becomes sustainable and the hydrogen trapping effect can be exerted over a longer period of time.

なお、有機過酸化物を含有する被覆層には、水素との反
応性を増す目的で白金系、錫系なと゛の触媒が少量添加
されることがある。Note that a small amount of a platinum-based or tin-based catalyst may be added to the coating layer containing an organic peroxide in order to increase the reactivity with hydrogen.

具体例 ＭＣＶＤ　法によるプリフォームロッドを紡糸速度５０
　ｍ／ｍｔｎで紡糸することにより、コア直径５０μｍ
　％　外径１２５μｍの光ファイバをつくり、その紡糸
直後、ｔ−ブチルハイドロパーオキサイド（分解温度１
６０℃）か０２重量％添加されたウレタンアクリレート
系紫外線硬化性樹脂を外径３８０μｍとなるよう光ファ
イバの外周に塗布し、これを窒素ガス流雰囲気、紫外線
ランプによる雰囲気温度６０℃にて硬化させ−得られ゛
た被覆光ファイバを石英ボビンに張力１００１ｉ’で巻
きつけ、２００℃で４時間保持した後、常温下にて伝送
損失を測定したところ、その被覆光ファイバの伝送ロス
増は波長１．３０ｔ１ｍ　、１．５５１１ｍにおいて測
定誤差（０，０５ｄＢ／Ｋｍ　）以下であった。Specific example: Spinning a preform rod by MCVD method at a spinning speed of 50
By spinning at m/mtn, the core diameter is 50 μm.
% An optical fiber with an outer diameter of 125 μm was made, and immediately after spinning, t-butyl hydroperoxide (decomposition temperature 1
A urethane acrylate-based ultraviolet curable resin containing 02% by weight (60°C) or 0.02% by weight was applied to the outer periphery of the optical fiber to give an outer diameter of 380 μm, and this was cured at an ambient temperature of 60°C using an ultraviolet lamp in a nitrogen gas flow atmosphere. - The obtained coated optical fiber was wound around a quartz bobbin with a tension of 1001i', held at 200°C for 4 hours, and the transmission loss was measured at room temperature. The measurement error was less than (0.05 dB/Km) at .30t1m and 1.5511m.

比較のため、被覆層にｔ−ブチルハイドロパーオキサイ
ドを添加しない他は、上記具体例と同一の被覆光ファイ
バをつくり、先と同じ試験を行なったところ、波長］、
　３０１１ｍでは０．２４　ｄＢ／に＋＋＋。For comparison, a coated optical fiber identical to that of the above specific example was made, except that t-butyl hydroperoxide was not added to the coating layer, and the same test as before was conducted.
+++ to 0.24 dB/ at 3011 m.

波長１５５μｍでは１．３１　ｄＢ／！（ｍの伝送ロス
増がそれぞれ認められた。1.31 dB/! at a wavelength of 155 μm! (An increase in transmission loss of m was observed in each case.

以」二説明した通り、本発明の被覆光ファイバは水素と
反応性のある化合物を含有した被覆層を備えていること
により、当該被覆層を介して水素を捕獲することができ
、したがって光ファイバの周囲に水素が発生したとして
もこれが光フアイバ中へ拡散することがなく、故に伝送
ロス増の生じがたい長期的に伝送特性の安定した被覆光
ファイバとなり得る。As explained below, the coated optical fiber of the present invention is equipped with a coating layer containing a compound that is reactive with hydrogen, so hydrogen can be captured through the coating layer, and therefore the optical fiber Even if hydrogen is generated around the optical fiber, it will not diffuse into the optical fiber, and therefore a coated optical fiber with stable transmission characteristics over a long period of time, with no increase in transmission loss, can be obtained.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図〜第３図は本発明被覆光ファイバの各種実施例を
示す断面図である。 １・・・・・光ファイバ ２．３．４・・・・・被覆層 １０．２０１３０・・・・・被覆光ファイバ特許出願人 代理人　弁理士　井　藤　誠 図面の浄書（内容に変更なし） 第１図 第２図 第３図 手続補正書（刃側 昭和５９年２月中 特許庁長官殿 １、事件の表示　特願昭５８−１７０１８６２、発明の
名称　被覆光ファイノく ３、補正をする者 提出します。 以　上1 to 3 are cross-sectional views showing various embodiments of the coated optical fiber of the present invention. 1...Optical fiber 2.3.4...Coating layer 10.20130...Coated optical fiber Patent applicant representative Patent attorney Makoto Ito Engraving of drawing (no changes in content) Figure 1 Figure 2 Figure 3 Procedural amendment (blade side February 1980, Director General of the Patent Office 1, Indication of case: Patent application 1701862/1986, Title of invention: Coated optical fiber 3, Person making the amendment) I will submit it.

Claims (1)

【特許請求の範囲】 （１）　石英系からなる光ファイバの外周に、ゴムまた
はプラスチックからなる１層以上の被覆層が形成されて
いる被覆光ファイバにおいて、少なくとも１つの被覆層
が水素と反応性のある化合物を含有している被覆光ファ
イバ。 （２ン　被覆層は水素と反応性のある化合物として有機
過酸化物を含有している特許請求の範囲第１項記載の被
覆光ファイバ。 （３）　水素と反応性のある化合物を含有している被覆
層が紫外線硬化性樹脂からなる特許請求の範囲第１項ま
たは第２項記載の被覆光ファイバ。 （４）　水素と反応性のある化合物の含有量はこれを含
有する被覆層に対しｂＯ，０１〜５重量％である特許請
求の範囲第１項ないし第３項いずれかに記載の被覆光フ
ァイバ。 （５）水素と反応性のある化合物はその分解温度が１０
０℃以上である特許請求の範囲第１項ないし第４項いず
れかに記載の被覆光ファイバ。[Claims] (1) A coated optical fiber in which one or more coating layers made of rubber or plastic are formed around the outer periphery of an optical fiber made of quartz, in which at least one coating layer is reactive with hydrogen. A coated optical fiber containing a certain compound. (2) The coated optical fiber according to claim 1, wherein the coating layer contains an organic peroxide as a compound reactive with hydrogen. (3) The coated optical fiber contains a compound reactive with hydrogen. The coated optical fiber according to claim 1 or 2, wherein the coating layer is made of an ultraviolet curable resin. (4) The content of the compound reactive with hydrogen is bO , 01 to 5% by weight. (5) The compound reactive with hydrogen has a decomposition temperature of 10% by weight.
The coated optical fiber according to any one of claims 1 to 4, which has a temperature of 0° C. or higher.
JP58170186A 1983-09-14 1983-09-14 Covered optical fiber Pending JPS6061709A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58170186A JPS6061709A (en) 1983-09-14 1983-09-14 Covered optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58170186A JPS6061709A (en) 1983-09-14 1983-09-14 Covered optical fiber

Publications (1)

Publication Number Publication Date
JPS6061709A true JPS6061709A (en) 1985-04-09

Family

ID=15900275

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58170186A Pending JPS6061709A (en) 1983-09-14 1983-09-14 Covered optical fiber

Country Status (1)

Country Link
JP (1) JPS6061709A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009111086A (en) * 2007-10-29 2009-05-21 Tdk Corp Coil component and manufacturing method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009111086A (en) * 2007-10-29 2009-05-21 Tdk Corp Coil component and manufacturing method thereof

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