JPH0921919A - Production of radiation resistant ribbon type multicore fiber - Google Patents
Production of radiation resistant ribbon type multicore fiberInfo
- Publication number
- JPH0921919A JPH0921919A JP7194125A JP19412595A JPH0921919A JP H0921919 A JPH0921919 A JP H0921919A JP 7194125 A JP7194125 A JP 7194125A JP 19412595 A JP19412595 A JP 19412595A JP H0921919 A JPH0921919 A JP H0921919A
- Authority
- JP
- Japan
- Prior art keywords
- quartz glass
- quartz
- fluorine
- base material
- glass plate
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、ラインセンサ、
ライトガイド等に用いられる耐放射線性テープ型マルチ
コアファイバの製造方法に関するものである。The present invention relates to a line sensor,
The present invention relates to a method of manufacturing a radiation resistant tape type multi-core fiber used for a light guide or the like.
【０００２】[0002]
【従来の技術】光ファイバのコアを一列に整列させた光
ファイバアレイを製造する場合、できるだけ細径に線引
きした光ファイバ素線を円筒ドラム上に整列巻きさせた
後、光ファイバ素線同志を接着剤で固め、円筒ドラムの
軸方向に切断して円筒ドラムから取出してテープ型マル
チコアファイバとする方法が知られている。この種のフ
ァイバに耐放射線性が要求される場合は、その組成とし
てコアが純粋石英ガラスで、クラッドがフッ素ドープ石
英ガラスからなる光ファイバ素線が用いられる。2. Description of the Related Art When manufacturing an optical fiber array in which the cores of optical fibers are aligned in a row, the optical fiber wires drawn as thin as possible are aligned and wound on a cylindrical drum, and then the optical fiber wires are wound together. A method is known in which a tape-type multi-core fiber is obtained by solidifying with an adhesive, cutting in the axial direction of the cylindrical drum, and taking out from the cylindrical drum. When radiation resistance is required for this type of fiber, an optical fiber element wire whose core is pure silica glass and whose cladding is fluorine-doped silica glass is used as its composition.
【０００３】[0003]
【発明が解決しようとする課題】上記の方法では、光フ
ァイバ素線の外径の細径化を図るとしても断線しないよ
うにするためには１０μｍ程度までが限界であり、その
コア本数にも自ずから限界があった。また、光ファイバ
素線を巻きつける円筒ドラムの大きさにも自ずと限界が
あるため製造可能な条長も３ｍ程度とされていた。In the above method, even if the outer diameter of the optical fiber is reduced, the limit is about 10 μm in order to prevent disconnection, and the number of cores is also limited. There was a limit naturally. Further, since the size of the cylindrical drum around which the optical fiber strand is wound is naturally limited, the manufacturable strip length is set to about 3 m.
【０００４】[0004]
【課題を解決するための手段】この発明は、上述の課題
を解決するために、多心でかつコア径の小さな耐放射線
性テープ型マルチコアファイバを簡単に得る方法を提供
することを目的とする。その特徴とする請求項１記載の
発明は、スリット状の貫通孔を有するフッ素ドープ石英
ガラス板を用意し、このスリット状の貫通孔に多数の純
粋石英コア／フッ素ドープ石英クラッドファイバを一列
に嵌挿させて母材となし、母材の一端を加熱溶融して線
引きすることにある。その特徴とする請求項２記載の発
明は、スリット状の貫通孔を有する石英ガラス板を用意
し、このスリット状の貫通孔に多数の純粋石英ガラスコ
ア／フッ素ドープ石英クラッドもしくは純粋石英ガラス
コア／フッ素ドープ石英クラッド／石英ジャケットから
なるファイバを一列に嵌挿させて母材となし、この母材
の一端を加熱溶融して線引きすることにある。その特徴
とする請求項３記載の発明は、所定間隔をおいて一列に
多数の貫通孔が形成されたフッ素ドープ石英ガラス板を
用意し、この多数の貫通孔にそれぞれ純粋石英コアファ
イバを嵌挿させて母材となし、この母材の一端に加熱溶
融して線引きすることにある。また、その特徴とする請
求項４記載の発明は、所定間隔をおいて一列に多数の貫
通孔が形成された石英ガラス板を用意し、この多数の貫
通孔にそれぞれ純粋石英コア／フッ素ドープ石英クラッ
ドもしくは純粋石英ガラスコア／フッ素ドープ石英クラ
ッド／石英ジャケットからなるファイバを嵌挿させて母
材となし、この母材の一端を加熱溶融して線引きするこ
とにある。さらにまた、その特徴とする請求項５記載の
発明は、母材の一端に石英ガラス板を取付けて母材の一
端を密封するとともに、母材の他端に石英ガラス管を取
付けて、この石英ガラス管側から吸引しつつ石英ガラス
板の先端を加熱溶融して線引きすることにある。なお、
線引きに際して、母材の他端から吸引するのは内部に空
気が残存するのを阻止するためである。SUMMARY OF THE INVENTION In order to solve the above problems, an object of the present invention is to provide a method for easily obtaining a radiation resistant tape type multi-core fiber having a large number of cores and a small core diameter. . The invention according to claim 1 is characterized in that a fluorine-doped quartz glass plate having slit-shaped through holes is prepared, and a large number of pure quartz core / fluorine-doped quartz clad fibers are fitted in a line into the slit-shaped through holes. It is to insert it into a base material and heat and melt one end of the base material to draw it. The invention according to claim 2 is characterized in that a quartz glass plate having slit-shaped through holes is prepared, and a large number of pure quartz glass cores / fluorine-doped quartz clad or pure quartz glass cores / is provided in the slit-shaped through holes. A fiber made of fluorine-doped quartz clad / quartz jacket is fitted in a row to form a base material, and one end of the base material is heated and melted to be drawn. The invention according to claim 3 is characterized in that a fluorine-doped quartz glass plate in which a large number of through holes are formed in a row at a predetermined interval is prepared, and pure quartz core fibers are respectively inserted into the plurality of through holes. The base material is formed into a base material, and one end of the base material is heated and melted to be drawn. Further, the invention according to claim 4 is characterized in that a quartz glass plate in which a large number of through holes are formed in a row at predetermined intervals is prepared, and the plurality of through holes are each provided with a pure quartz core / fluorine-doped quartz. This is to insert a fiber composed of a clad or a pure quartz glass core / fluorine-doped quartz clad / quartz jacket to form a base material, and heat and melt one end of the base material to draw it. Furthermore, the invention according to claim 5 is characterized in that a quartz glass plate is attached to one end of the base material to seal one end of the base material, and a quartz glass tube is attached to the other end of the base material. The purpose is to heat and melt the tip of the quartz glass plate while drawing it from the glass tube side to draw it. In addition,
At the time of drawing, the reason for sucking from the other end of the base material is to prevent air from remaining inside.
【０００５】この発明は上記のように、予め得られるテ
ープ型マルチコアファイバと相似形の母材を用意し、こ
れを線引きしてファイバ化する方法であるので長尺のも
のが得られ、必要に応じてこれを適宜長さに切断しても
良いので任意の長さのものとすることができる。また、
母材の元になるものとして、その中に一列に多数の少な
くともコアを含むファイバが並ぶようにその径に合せた
大きさのスリット状の貫通孔を有するフッ素ドープ石英
ガラス板あるいは石英ガラス板を用意するか、もしくは
所定間隔毎に少なくともコアを含むファイバの径に合せ
た大きさの貫通孔が一列に多数形成されたフッ素ドープ
石英ガラス板あるいは石英ガラス板を用意し、これらス
リット状貫通孔もしくは所定間隔毎の貫通孔にファイバ
を入れて母材とするので、用意すべきガラス板およびフ
ァイバの大きさは比較的に任意にできるため取扱いが簡
単で、かつファイバの断線の恐れが軽減できる。As described above, the present invention is a method for preparing a tape-type multi-core fiber having a similar shape to that of a pre-obtained tape-type multi-core fiber, and drawing the fiber to form a fiber. Depending on the case, it may be cut into an appropriate length, so that it may be of any length. Also,
As a base material of the base material, a fluorine-doped quartz glass plate or a quartz glass plate having a slit-shaped through hole having a size corresponding to the diameter of a plurality of fibers including at least cores arranged in a line Prepare, or prepare a fluorine-doped quartz glass plate or quartz glass plate in which a large number of through holes of a size corresponding to the diameter of the fiber including at least the core at predetermined intervals are formed in a row, and these slit-shaped through holes or Since the fibers are put into the through holes at predetermined intervals to form the base material, the glass plate and the fiber to be prepared can be relatively arbitrarily sized, so that the handling is easy and the risk of fiber breakage can be reduced.
【０００６】[0006]
実施例１ 図１は、この発明の方法によって得られる耐放射線性テ
ープ型マルチコアファイバの一例の断面図。図２〜３は
この発明の方法の説明図である。図１において、１は所
定間隔をおいて一列に並んだ純粋石英コア、２は一列に
並んだ各純粋石英コアを覆う共通のフッ素ドープ石英ク
ラッド、３は全体を覆う樹脂被覆層である。図２は、こ
の発明の方法に用いられる、全体として矩形のフッ素ド
ープ石英ガラス板１０で、その長さ方向にスリット状貫
通孔１２を備えている。このスリットのサイズは、挿入
される純粋石英コア／フッ素ドープ石英クラッドファイ
バを多数一列に並び得る大きさとされている。具体的に
は矩形のフッ素ドープ石英ガラス板は、厚さＤ：１〜１
０ｍｍ程度、幅Ｗ：１０〜１００ｍｍ程度、長さＬ：１
００〜５００ｍｍ程度であり、スリットは高さＳＤ：１
００〜２０００μｍ、幅ＳＷ：２０〜６０ｍｍとされ
る。スリットの幅ＳＷが小さ過ぎると挿入されるファイ
バの本数が限られ多画素化に不利であり、逆にスリット
の高さＳＤが小さ過ぎるとスリット自体の形成が困難で
あると共にファイバの挿入が困難になる。更にガラス板
の幅Ｗが大き過ぎると線引きが困難となる。そしてこの
スリット状の貫通孔１２内には図示しないが光ファイバ
を一列に挿入させて母材を構成する。ファイバの数はス
リットの幅ＳＷに対応するが、およそ１００〜６００本
程度、ファイバの径はスリットの高さＳＤの９０〜９９
％とされる。なお、ファイバのスリット内への挿入は純
水中で超音波振動をかけながら行うと比較的簡単に挿入
できる。Example 1 FIG. 1 is a sectional view of an example of a radiation resistant tape type multi-core fiber obtained by the method of the present invention. 2 to 3 are explanatory views of the method of the present invention. In FIG. 1, 1 is a pure quartz core arranged in a line at a predetermined interval, 2 is a common fluorine-doped quartz cladding that covers the pure silica cores arranged in a line, and 3 is a resin coating layer that covers the whole. FIG. 2 shows a generally rectangular fluorine-doped quartz glass plate 10 used in the method of the present invention, which is provided with slit-shaped through holes 12 in its length direction. The size of this slit is such that a large number of pure quartz core / fluorine-doped quartz clad fibers to be inserted can be arranged in a line. Specifically, the rectangular fluorine-doped quartz glass plate has a thickness D: 1-1.
0 mm, width W: 10 to 100 mm, length L: 1
It is about 0 to 500 mm, and the slit height SD: 1
The width SW is 20 to 60 mm. If the width SW of the slit is too small, the number of fibers to be inserted is limited, which is disadvantageous for increasing the number of pixels. Conversely, if the height SD of the slit is too small, it is difficult to form the slit itself and it is difficult to insert the fiber. become. Further, if the width W of the glass plate is too large, it becomes difficult to draw the wire. Although not shown, optical fibers are inserted in a line into the slit-shaped through holes 12 to form a base material. The number of fibers corresponds to the width SW of the slit, but is about 100 to 600, and the diameter of the fiber is 90 to 99 of the height SD of the slit.
%. The insertion of the fiber into the slit can be relatively easily performed by applying ultrasonic vibration in pure water.
【０００７】次に、図３に示すようにファイバが挿入さ
れたフッ素ドープ石英ガラス板からなる母材２０の一端
に石英ガラス板３０を融着し、他端には石英ガラス管４
０を融着する。石英ガラス板３０は、母材２０の一端を
密封するとともに、線引きに際してダミーの役割を果た
すもので、母材２０の全長を極力製品として使用できる
ようにするためのものである。石英ガラス管４０は、そ
の母材２０側の断面が母材２０と合致するように偏平に
なされていて，それから次第に拡径されて先端が円形に
なされたロート状部４２とこのロート状部４２から延び
る管状部４４とからなっている。そして、管状部４４側
は図示してない真空ポンプに接続される。この状態で、
石英ガラス管の管状部４４側から吸引しつつ石英ガラス
板３０側先端部を加熱溶融して線引きし所望のマルチコ
アファイバとする。このように一端から吸引しつつ線引
きすることで泡が内部に残存するのが阻止できる。上記
実施例１では、石英ガラス板としてフッ素ドープ石英ガ
ラス板の例を示したが、ドーパントを含まない石英ガラ
ス板でもよく、その場合、スリットに嵌挿されるファイ
バとしては、純粋石英コア／フッ素ドープ石英クラッド
からなる層構造のものもしくは純粋石英コア／フッ素ド
ープ石英クラッド／石英ジャケットからなるものが用い
られる。Next, as shown in FIG. 3, a quartz glass plate 30 is fused to one end of a base material 20 made of a fluorine-doped quartz glass plate in which fibers are inserted, and the quartz glass tube 4 is attached to the other end.
Fuse 0. The quartz glass plate 30 not only seals one end of the base material 20 but also plays a role of a dummy at the time of drawing, so that the entire length of the base material 20 can be used as a product as much as possible. The quartz glass tube 40 is flat so that its cross section on the side of the base material 20 matches the base material 20, and then the diameter of the funnel 42 is gradually expanded and the end thereof is circular, and the funnel-shaped portion 42. And a tubular portion 44 extending from. The tubular portion 44 side is connected to a vacuum pump (not shown). In this state,
While suctioning from the tubular portion 44 side of the quartz glass tube, the tip portion of the quartz glass plate 30 side is heated and melted and drawn to obtain a desired multi-core fiber. In this way, bubbles can be prevented from remaining inside by drawing while drawing from one end. In Example 1 above, an example of a fluorine-doped quartz glass plate was shown as the quartz glass plate, but a quartz glass plate containing no dopant may be used, and in this case, the fiber fitted in the slit may be a pure quartz core / fluorine-doped plate. A layered structure made of quartz clad or a pure quartz core / fluorine-doped quartz clad / quartz jacket is used.
【０００８】実施例２ 図４は、この発明の他の例を示す。５０は全体として矩
形のフッ素ドープ石英ガラス板５０で、所定間隔毎にそ
の長さ方向に延びる断面正方形の貫通孔５２を備えてい
る。この孔のサイズは、挿入される純粋石英コアファイ
バの寸法に関連するが３００×３００μｍ〜２，０００
×２，０００μｍ程度、好ましくは３００〜５００μｍ
程度が好適である。また、矩形のフッ素ドープ石英ガラ
ス板５０のサイズとしては、厚さＤ：１０ｍｍ、幅Ｗ：
１００ｍｍ、長さＬ：５００ｍｍ程度が好適である。こ
の多数の孔内に外径がこの孔の寸法の９０〜９９％程度
のコアファイバを挿入して母材を得る。この母材を得た
後は実施例１と同様に処理する。上記実施例２では、石
英ガラス板としてフッ素ドープ石英ガラス板の例を示し
たが、ドーパントを含まない石英ガラス板でもよく、そ
の場合個々の貫通孔に嵌挿されるファイバとしては純粋
石英コア／フッ素ドープ石英クラッドからなるものが用
いられる。Embodiment 2 FIG. 4 shows another example of the present invention. Numeral 50 is a rectangular fluorine-doped quartz glass plate 50 as a whole, which is provided with through holes 52 having a square cross section extending in the length direction thereof at predetermined intervals. The size of this hole, which is related to the dimensions of the pure silica core fiber to be inserted, is between 300 × 300 μm and 2,000.
X about 2,000 μm, preferably 300 to 500 μm
The degree is preferred. Further, as the size of the rectangular fluorine-doped quartz glass plate 50, thickness D: 10 mm, width W:
A length of 100 mm and a length L of about 500 mm are preferable. A core fiber having an outer diameter of about 90 to 99% of the size of the hole is inserted into the many holes to obtain a base material. After obtaining this base material, the same processing as in Example 1 is performed. In Example 2 above, an example of a fluorine-doped quartz glass plate was shown as the quartz glass plate, but a quartz glass plate containing no dopant may be used, and in this case, the fiber inserted into each through hole is a pure quartz core / fluorine. A doped quartz clad is used.
【０００９】具体例１ スリット状の貫通孔を有する全体として矩形のフッ素ド
ープ石英ガラス板（石英との比屈折率差Δ＝−１％）と
して、外形が厚さ５ｍｍ、幅５２ｍｍ、長さ５００ｍ
ｍ、スリットの高さ２００μｍ、幅５０ｍｍのサイズの
ものを用意した。一方、直径が１９５μｍの純粋石英コ
ア／フッ素ドープ石英クラッド（両者の比率１：１．３
３）ファイバを前記ガラス板のスリット内に一列に２５
５本並べて嵌挿させて母材とした。次に、この母材の一
端に長さ２０ｍｍの外径が同一の石英ガラス板を融着し
た。また、この母材を他端には一端が母材を構成する石
英ガラス板と同一サイズでそれからロート状に拡径され
最後に円形となる石英ガラス管を融着した。そして、こ
れを石英ガラス管側から吸引しつつ石英ガラス板先端を
１５００℃に加熱溶融して線引きし、厚さ２１０μｍ、
幅２，２００μｍ、コアのピッチ８±０．１μｍのマル
チコアファイバとし、その上に紫外線硬化型樹脂を０．
２ｍｍ厚さにコーティングした。得られたものの条長は
２３０ｍであり、その引っ張り強さも１００ｋｇ／ｍｍ
2 と十分なものであった。SPECIFIC EXAMPLE 1 An entirely rectangular fluorine-doped quartz glass plate having a slit-like through hole (relative refractive index difference Δ = -1% with quartz) has an outer shape of 5 mm in thickness, 52 mm in width, and 500 m in length.
m, the slit height was 200 μm, and the width was 50 mm. On the other hand, a pure quartz core / fluorine-doped quartz cladding with a diameter of 195 μm (both ratio 1: 1.3
3) 25 fibers in a row in the slit of the glass plate
Five pieces were lined up and fitted together to form a base material. Next, a quartz glass plate having a length of 20 mm and the same outer diameter was fused to one end of the base material. Further, a quartz glass tube having the same size at one end as the quartz glass plate constituting the parent material and having a funnel-shaped diameter and finally a circular shape was fused to the other end of this parent material. Then, while sucking this from the side of the quartz glass tube, the tip of the quartz glass plate is heated and melted to 1500 ° C. and drawn to obtain a thickness of 210 μm,
A multi-core fiber having a width of 2,200 μm and a core pitch of 8 ± 0.1 μm was formed, on which an ultraviolet curable resin was added.
It was coated to a thickness of 2 mm. The obtained product has a strip length of 230 m and a tensile strength of 100 kg / mm.
2 was enough.
【００１０】具体例２ スリット状の貫通孔を有する全体として矩形の石英ガラ
ス板として、外形が厚さ５ｍｍ、幅５２ｍｍ、長さ５０
０ｍｍ、スリットの高さ２００μｍ、幅５０ｍｍのサイ
ズのものを用意した。一方、ファイバとして、外径が１
９５μｍに線引きした純粋石英コア／フッ素ドープクラ
ッド／石英ジャケットからなるものを２５５本用意しス
リット内に一列に挿入して母材とした。なお、前記ファ
イバの各層の比率は１：１．２５：１．３３であった。
次に、この母材をその後は具体例１と同様にして線引き
して、厚さ２１０μｍ，幅２００μｍ，コアのピッチ８
±０．１μｍのテープ型マルチコアファイバとして、そ
の上に紫外線硬化型樹脂を０．２ｍｍ厚さにコーティン
グした。得られたものの条長は２３０ｍであり、その引
っ張り強さも具体例１とほぼ同等であった。Concrete Example 2 An entirely rectangular quartz glass plate having slit-shaped through holes, having an outer shape of 5 mm in thickness, 52 mm in width, and 50 in length.
The size was 0 mm, the slit height was 200 μm, and the width was 50 mm. On the other hand, as a fiber, the outer diameter is 1
255 pieces of pure quartz core / fluorine-doped clad / quartz jacket drawn to 95 μm were prepared and inserted into the slits in a line to form a base material. The ratio of each layer of the fiber was 1: 1.25: 1.33.
Next, this base material is then drawn in the same manner as in Example 1 to obtain a thickness of 210 μm, a width of 200 μm, and a core pitch of 8 μm.
As a tape-type multi-core fiber of ± 0.1 μm, an ultraviolet curable resin was coated thereon to a thickness of 0.2 mm. The obtained strip had a strip length of 230 m, and its tensile strength was almost the same as in Example 1.
【００１１】具体例３ 外形が厚さ１０ｍｍ、幅５２ｍｍ、長さ５００ｍｍ、一
辺が３００μｍの正方形で、間隔（ピッチ）が５００μ
ｍの貫通孔が１００個一列に設けられた、全体の形が矩
形のフッ素ドープ石英ガラス板（石英との比屈折率差Δ
＝−１％）を用意した。この１００個の孔内にそれぞれ
外径２８０μｍの純粋石英コアファイバを挿入した。そ
の後は実施例１と同様にしてファイバ化して厚さ１８０
μｍ、幅９００μｍ、コアのピッチ８±０．１μｍのマ
ルチコアファイバとし、その上に紫外線硬化型樹脂を
０．１５ｍｍ厚さにコーティングした。得られたものの
条長は１３００ｍであり、その引っ張り強さも１００ｋ
ｇ／ｍｍ2 と十分であった。本発明ではガラス板とし
て、後にクラッドとなるフッ素ドープ石英ガラス板を用
い、ファイバは純粋石英コアファイバとしたが、ガラス
板に石英ガラスを用い、ファイバとして純粋石英コア／
フッ素ドープ石英クラッドのものを用いることもでき
る。Concrete Example 3 The outer shape is a square having a thickness of 10 mm, a width of 52 mm, a length of 500 mm and a side of 300 μm, and an interval (pitch) of 500 μ.
Fluorine-doped quartz glass plate with a rectangular overall shape in which 100 through holes of m are provided in a row (difference in relative refractive index with quartz Δ
= -1%) was prepared. Pure quartz core fibers having an outer diameter of 280 μm were inserted into the 100 holes. After that, the fiber is formed into a thickness of 180 in the same manner as in Example 1.
A multi-core fiber having a μm, a width of 900 μm, and a core pitch of 8 ± 0.1 μm was formed, and an ultraviolet curable resin was coated thereon with a thickness of 0.15 mm. The obtained product has a strip length of 1300 m and a tensile strength of 100 k.
It was sufficient as g / mm 2 . In the present invention, as the glass plate, a fluorine-doped quartz glass plate which will be a clad later is used, and the fiber is a pure quartz core fiber. However, quartz glass is used as the glass plate and a pure quartz core / fiber is used.
It is also possible to use a fluorine-doped quartz clad.
【００１２】[0012]
【発明の効果】この発明の方法は、以上のように予めス
リット状の貫通孔を有するフッ素ドープ石英ガラス板を
用意し、この孔に多数の純粋石英コア／フッ素ドープ石
英クラッドファイバを列状に挿入するかもしくは予めス
リット状の貫通孔が列条に形成された石英ガラス板を用
意し、この孔に多数の純粋石英コア／フッ素ドープ石英
クラッド／石英ジャケットからなるファイバ等を列状に
挿入するか、または、所定間隔毎に所定の大きさの貫通
孔が列状に形成されたフッ素ドープ石英ガラス板を用意
し、この孔に多数の純粋石英コアファイバを挿入して母
材とするか、所定間隔毎に所定の大きさの貫通孔が列状
に形成された石英ガラス板を用意し、この孔に多数の純
粋石英コアファイバ／フッ素ドープ石英クラッド／石英
ジャケットからなるファイバ等を挿入して母材とし、こ
の母材を線引きして耐放射線性テープ型マルチコアファ
イバとする方法であるので、用意すべき石英ガラス板お
よびファイバの大きさを比較的任意に選択でき、かつフ
ァイバが断線の恐れが少なく、また条長の長いものを容
易に得ることができる。According to the method of the present invention, a fluorine-doped quartz glass plate having slit-shaped through holes is prepared in advance as described above, and a large number of pure quartz core / fluorine-doped quartz clad fibers are arranged in rows in the holes. Insert or prepare a quartz glass plate in which slit-like through holes are formed in rows beforehand, and insert many fibers such as pure quartz core / fluorine-doped quartz cladding / quartz jacket in rows into these holes Or, prepare a fluorine-doped quartz glass plate in which through holes of a predetermined size are formed in rows at predetermined intervals, and insert a large number of pure quartz core fibers into the holes to form a base material, Prepare a quartz glass plate in which through holes of a predetermined size are formed in rows at regular intervals, and use a large number of pure silica core fibers / fluorine-doped quartz cladding / quartz jacket in this hole. Since it is a method of inserting a fiber etc. as a base material and drawing this base material to make a radiation resistant tape type multi-core fiber, it is possible to relatively arbitrarily select the size of the silica glass plate and the fiber to be prepared, In addition, the fiber is less likely to be broken, and a long fiber can be easily obtained.
【図１】この発明の方法によって得られたマルチコアフ
ァイバの一例の断面図。FIG. 1 is a cross-sectional view of an example of a multicore fiber obtained by the method of the present invention.
【図２】この発明方法に用いられるスリット状の貫通孔
を有する石英ガラス板の説明図。FIG. 2 is an explanatory view of a quartz glass plate having slit-shaped through holes used in the method of the present invention.
【図３】この発明の方法に用いられる母材の一端に石英
ガラス板、他端に石英ガラス管を取付けた様子を示す説
明図。FIG. 3 is an explanatory view showing a state in which a quartz glass plate is attached to one end and a quartz glass tube is attached to the other end of a base material used in the method of the present invention.
【図４】この発明の方法による他の実施例の断面図。FIG. 4 is a sectional view of another embodiment according to the method of the present invention.
１ 純粋石英コア ２ フッ素ドープ石英クラッド ３ 紫外線硬化型樹脂被覆 １０ スリット状貫通孔を有するフッ素ドープ石英板 １２ スリット状貫通孔 ２０ 母材 ３０ 石英板 ４０ 石英ガラス管 ５０ フッ素ドープ石英板 ５２ 断面正方形の貫通孔 1 Pure Quartz Core 2 Fluorine-Doped Quartz Cladding 3 UV-Curable Resin Coating 10 Fluorine-Doped Quartz Plate Having Slit-like Through Holes 12 Slit-like Through Holes 20 Base Material 30 Quartz Plate 40 Quartz Glass Tube 50 Fluorine-Doped Quartz Plate 52 Cross Section Square Through hole
Claims (5)
プ石英ガラス板を用意し、このスリット状の貫通孔に多
数の純粋石英コア／フッ素ドープ石英クラッドファイバ
を一列に嵌挿させて母材となし、この母材の一端を加熱
溶融して線引きすることを特徴とする耐放射線性テープ
型マルチコアファイバの製造方法。1. A fluorine-doped quartz glass plate having slit-shaped through holes is prepared, and a large number of pure quartz core / fluorine-doped quartz clad fibers are inserted in a line into the slit-shaped through holes to form a base material. A method for producing a radiation-resistant tape-type multi-core fiber, characterized in that one end of this base material is heated and melted and drawn.
板を用意し、このスリット状の貫通孔に多数の純粋石英
ガラスコア／フッ素ドープ石英クラッドもしくは多数の
純粋石英ガラスコア／フッ素ドープ石英クラッド／石英
ジャケットからなるファイバを一列に嵌挿させて母材と
なし、この母材の一端を加熱溶融して線引きすることを
特徴とする耐放射線性テープ型マルチコアファイバの製
造方法。2. A quartz glass plate having slit-shaped through holes is prepared, and a large number of pure quartz glass cores / fluorine-doped quartz clad or a large number of pure quartz glass cores / fluorine-doped quartz clad / is provided in the slit-shaped through holes. A method for producing a radiation-resistant tape-type multi-core fiber, characterized in that fibers made of a quartz jacket are fitted in a row to form a base material, and one end of the base material is heated and melted and drawn.
形成されたフッ素ドープ石英ガラス板を用意し、この多
数の貫通孔にそれぞれ純粋石英コアファイバを嵌挿させ
て母材となし、この母材の一端を加熱溶融して線引きす
ることを特徴とする耐放射線性テープ型マルチコアファ
イバの製造方法。3. A fluorine-doped quartz glass plate having a large number of through holes formed in a row at predetermined intervals is prepared, and pure quartz core fibers are fitted into the large numbers of through holes to form a base material, A method for producing a radiation resistant tape type multi-core fiber, characterized in that one end of this base material is heated and melted and drawn.
形成された石英ガラス板を用意し、この多数の貫通孔に
それぞれ純粋石英コア／フッ素ドープ石英クラッドもし
くは多数の純粋石英ガラスコア／フッ素ドープ石英クラ
ッド／石英ジャケットからなるファイバを嵌挿させて母
材となし、この母材の一端を加熱溶融して線引きするこ
とを特徴とする耐放射線性テープ型マルチコアファイバ
の製造方法。4. A quartz glass plate in which a large number of through holes are formed in a row at predetermined intervals is prepared, and pure quartz core / fluorine-doped quartz cladding or a large number of pure quartz glass cores / A method for producing a radiation-resistant tape-type multi-core fiber, characterized in that a fiber made of fluorine-doped quartz clad / quartz jacket is inserted to form a base material, and one end of the base material is heated and melted and drawn.
材の一端を密封するとともに、母材の他端に石英ガラス
管を取付けて、この石英ガラス管側から吸引しつつ石英
ガラス板の先端を加熱溶融して線引きすることを特徴と
する請求項１２，３または４記載の耐放射線性テープ型
マルチコアファイバの製造方法。5. A quartz glass plate is attached to one end of the base material to seal one end of the base material, and a quartz glass tube is attached to the other end of the base material, and the quartz glass plate is sucked from the quartz glass tube side. The method for producing a radiation-resistant tape-type multi-core fiber according to claim 12, 3 or 4, wherein the tip of the fiber is heated and melted and drawn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19412595A JP3841849B2 (en) | 1995-07-07 | 1995-07-07 | Method for producing radiation-resistant tape-type multi-core fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19412595A JP3841849B2 (en) | 1995-07-07 | 1995-07-07 | Method for producing radiation-resistant tape-type multi-core fiber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0921919A true JPH0921919A (en) | 1997-01-21 |
| JP3841849B2 JP3841849B2 (en) | 2006-11-08 |
Family
ID=16319331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19412595A Expired - Lifetime JP3841849B2 (en) | 1995-07-07 | 1995-07-07 | Method for producing radiation-resistant tape-type multi-core fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3841849B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011018013A (en) * | 2009-01-20 | 2011-01-27 | Sumitomo Electric Ind Ltd | Optical communication system and array converter |
| US8655131B2 (en) | 2009-01-19 | 2014-02-18 | Sumitomo Electric Industries, Ltd. | Multi-core optical fiber |
| US8687931B2 (en) | 2009-01-19 | 2014-04-01 | Sumitomo Electric Industries, Ltd. | Optical fiber |
-
1995
- 1995-07-07 JP JP19412595A patent/JP3841849B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8655131B2 (en) | 2009-01-19 | 2014-02-18 | Sumitomo Electric Industries, Ltd. | Multi-core optical fiber |
| US8687931B2 (en) | 2009-01-19 | 2014-04-01 | Sumitomo Electric Industries, Ltd. | Optical fiber |
| JP2011018013A (en) * | 2009-01-20 | 2011-01-27 | Sumitomo Electric Ind Ltd | Optical communication system and array converter |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3841849B2 (en) | 2006-11-08 |
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