JPS6117777B2 - - Google Patents
Info
- Publication number
- JPS6117777B2 JPS6117777B2 JP6333578A JP6333578A JPS6117777B2 JP S6117777 B2 JPS6117777 B2 JP S6117777B2 JP 6333578 A JP6333578 A JP 6333578A JP 6333578 A JP6333578 A JP 6333578A JP S6117777 B2 JPS6117777 B2 JP S6117777B2
- Authority
- JP
- Japan
- Prior art keywords
- rod
- target
- soot
- diameter
- tip
- 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
- 239000004071 soot Substances 0.000 claims description 23
- 239000011521 glass Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 239000013307 optical fiber Substances 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 230000007062 hydrolysis Effects 0.000 claims description 2
- 238000006460 hydrolysis reaction Methods 0.000 claims description 2
- 238000005979 thermal decomposition reaction Methods 0.000 claims description 2
- 238000007380 fibre production Methods 0.000 claims 1
- 239000010453 quartz Substances 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 238000004017 vitrification Methods 0.000 description 5
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
Landscapes
- Manufacture, Treatment Of Glass Fibers (AREA)
Description
【発明の詳細な説明】
本発明は光フアイバ製造用スートロツド（ガラ
ス媒を堆積した棒状物）の作成方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for making a soot rod (a rod-shaped object on which a glass medium is deposited) for manufacturing optical fibers.
スートを軸付けするための従来技術によるター
ゲツトとして、第１図に示すターゲツトが挙げら
れる。第１図のターゲツト１にスートロツド２が
軸付けされている。第１図ａは、棒状ターゲツト
１にスート２を堆積させたものであり第１図ｂ
は、円板状ターゲツト１上にスート２を堆積させ
た場合である。また、第１図ｃは、円筒ターゲツ
ト１内にスート２を充満させたものであり第１図
ｄは、ターゲツト１上にこれと同一径のスート２
を軸付けした例である。 A prior art target for pivoting a suit includes the target shown in FIG. A soot rod 2 is pivoted to a target 1 in FIG. Fig. 1a shows the soot 2 deposited on a rod-shaped target 1, and Fig. 1b
This is the case where soot 2 is deposited on disk-shaped target 1. 1c shows a cylindrical target 1 filled with soot 2, and FIG.
This is an example of axes.
いずれの場合もスートの堆積には、光フアイバ
製造技術の分野で周知のCVD法、すなわちガラ
スのソースガスを火炎加水分解、熱分解、プラズ
マによる化学反応等によつてスートに変え堆積さ
せる方法が用いられる。 In either case, the soot is deposited using the CVD method, which is well known in the field of optical fiber manufacturing technology, in which a glass source gas is converted into soot by flame hydrolysis, thermal decomposition, a chemical reaction using plasma, etc. used.
このようにして得たスートロツドをガラス化す
る場合には、第２図ａに示す方法を用いる。すな
わち、ターゲツト１１を回転させながら引き上げ
スートロツドの上部分から加熱炉１３によつてガ
ラス化を行う。 When the soot rod thus obtained is vitrified, the method shown in FIG. 2a is used. That is, vitrification is carried out in the heating furnace 13 from the upper part of the pulling soot rod while rotating the target 11.
しかし、上述の従来技術には下記の欠点が認め
られる。第１図ａおよびｂにおいてターゲツトの
先端近傍のターゲツト外周に堆積したスート層の
厚さが薄いときならびに第１図ｃおよびｄの場合
には、ガラス化時に第２図ａに示すようなスート
ロツドの歪曲がみられる。 However, the following drawbacks are recognized in the above-mentioned conventional technology. When the thickness of the soot layer deposited on the outer periphery of the target near the tip of the target is thin in FIGS. 1a and b, and in the cases of FIGS. 1c and d, the soot rod as shown in FIG. Distortion can be seen.
本発明は、ターゲツトの先端中央にターゲツト
より小径の棒または管を取り付けることによつて
ガラス化時のスートロツドの前記歪曲を解消し、
従来技術の難点を解決しようとするものである。 The present invention eliminates the distortion of the soot rod during vitrification by attaching a rod or tube with a smaller diameter than the target to the center of the tip of the target.
This is an attempt to solve the difficulties of the prior art.
以下、本発明を実施例を参照して詳細に説明す
る。 Hereinafter, the present invention will be explained in detail with reference to Examples.
実施例 １
第３図ａは、本発明によるターゲツトの一例を
用いたスートロツドを示す。この図は、直径８mm
の石英棒２１の先端に直径40mmの円板２２を有す
るターゲツトの先端中心に直径５mm、長さ40mmの
石英棒２３を取り付け、上記棒上に直径40mmの
SiO2―P2O5スートロツド２４を前述と同様にし
て堆積させたものである。これを1500℃の温度で
ガラス化した結果、曲りの無いSiO2―P2O5ガラ
スロツドを得た。EXAMPLE 1 FIG. 3a shows a suit rod using an example of a target according to the invention. This figure is 8mm in diameter.
A quartz rod 23 with a diameter of 5 mm and a length of 40 mm is attached to the center of the tip of a target having a disc 22 with a diameter of 40 mm at the tip of a quartz rod 21, and a quartz rod 23 with a diameter of 40 mm is mounted on the rod.
A SiO 2 --P 2 O 5 soot rod 24 was deposited in the same manner as described above. As a result of vitrifying this at a temperature of 1500°C, a SiO 2 --P 2 O 5 glass rod without bending was obtained.
実施例 ２
第３図ｂは、本発明によるターゲツトの他の一
例を用いたスートロツドを示す。この図は、直径
８mmの石英棒３１の先端に直径40mmの円筒３２を
有するターゲツトの先端中心に直径５mm、長さ40
mmの石英棒３３を取り付け、上記棒上に直径40mm
のSiO2―P2O5スートロツド３４を堆積させたも
のである。これを1500℃の温度でガラス化した結
果、第２図ｂに示すようにスートロツドの歪曲無
しでガラス化を行うことができた。EXAMPLE 2 FIG. 3b shows a suit rod using another example of a target according to the invention. This figure shows a target having a cylinder 32 with a diameter of 40 mm at the tip of a quartz rod 31 with a diameter of 8 mm and a length of 40 mm in the center of the tip.
Attach a quartz rod 33 with a diameter of 40 mm to the above rod.
SiO 2 --P 2 O 5 soot rods 34 are deposited. As a result of vitrifying this at a temperature of 1500°C, it was possible to perform vitrification without distortion of the soot rod, as shown in Figure 2b.
以上説明したごとく本発明によれば、ターゲツ
ト先端中央にターゲツトより小径の棒または管を
取り付けることによつて、従来技術の欠点である
スートロツドガラス化時の歪曲を防止することが
でき、本発明の効果を確認した。 As explained above, according to the present invention, by attaching a rod or tube with a smaller diameter than the target to the center of the tip of the target, distortion during soot rod vitrification, which is a drawback of the prior art, can be prevented. The effectiveness of the invention was confirmed.
第１図は、従来技術によるスートロツドおよび
ターゲツトの断面図である。図の１はターゲツ
ト、２はスートロツドである。
第２図は、スートロツドのガラス化装置を示す
ものである。ａは従来技術、ｂは本発明の技術に
よるものである。ａおよびｂにおける１１はター
ゲツト、１２はガラス棒、１３は加熱炉、１４は
スートロツドである。
第３図ａおよび第３図ｂは、本発明の実施例に
おけるスートロツドとターゲツトの断面図であ
る。２１，２２，３１および３２はターゲツト、
２３および３３は本発明によるスートロツド歪曲
防止の棒、２４および３４はスートロツドであ
る。
FIG. 1 is a cross-sectional view of a suit rod and target according to the prior art. In the figure, 1 is the target and 2 is the suit rod. FIG. 2 shows a soot rod vitrification apparatus. A is based on the prior art, and b is based on the technology of the present invention. In a and b, 11 is a target, 12 is a glass rod, 13 is a heating furnace, and 14 is a soot rod. Figures 3a and 3b are cross-sectional views of a soot rod and target in an embodiment of the invention. 21, 22, 31 and 32 are targets,
23 and 33 are rods for preventing soot rod distortion according to the present invention, and 24 and 34 are soot rods.
Claims (1)
解、プラズマによる化学反応等によつてスートに
変え、これをターゲツト上に軸付けする方法にお
いて、ターゲツトの先端中央に上記ターゲツトの
直径より小さい直径を有する棒もしくは管を取り
付けることを特徴とする光フアイバ製造用スート
ロツドの作成方法。1 A method in which a glass source gas is converted to soot by flame hydrolysis, thermal decomposition, a chemical reaction by plasma, etc., and this is axially mounted on a target, in which the target has a diameter smaller than the diameter of the target at the center of the tip. A method of making a soot rod for optical fiber production, characterized by attaching a rod or tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6333578A JPS54155212A (en) | 1978-05-29 | 1978-05-29 | Production of soot rod for making optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6333578A JPS54155212A (en) | 1978-05-29 | 1978-05-29 | Production of soot rod for making optical fiber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54155212A JPS54155212A (en) | 1979-12-07 |
| JPS6117777B2 true JPS6117777B2 (en) | 1986-05-09 |
Family
ID=13226261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6333578A Granted JPS54155212A (en) | 1978-05-29 | 1978-05-29 | Production of soot rod for making optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54155212A (en) |
-
1978
- 1978-05-29 JP JP6333578A patent/JPS54155212A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54155212A (en) | 1979-12-07 |
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