JP4851996B2 - 光ファイバ及びその製造方法 - Google Patents
光ファイバ及びその製造方法 Download PDFInfo
- Publication number
- JP4851996B2 JP4851996B2 JP2007157510A JP2007157510A JP4851996B2 JP 4851996 B2 JP4851996 B2 JP 4851996B2 JP 2007157510 A JP2007157510 A JP 2007157510A JP 2007157510 A JP2007157510 A JP 2007157510A JP 4851996 B2 JP4851996 B2 JP 4851996B2
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- core
- temperature
- face
- rare earth
- 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.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
- C03B37/027—Fibres composed of different sorts of glass, e.g. glass optical fibres
- C03B37/02718—Thermal treatment of the fibre during the drawing process, e.g. cooling
- C03B37/02727—Annealing or re-heating
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
- Lasers (AREA)
Description
2 コア(希土類添加コア)
3 クラッド
3a 内側クラッド
3b 外側クラッド
21 製造装置
22 光ファイバ母材
23 加熱炉
25 アニール炉
26 ダイス
27 硬化部
Claims (2)
- 利得媒質となる希土類が添加されたコアと上記コアの外周に形成されたクラッドとを備え、端面から入射された励起光によりレーザ光を発振させる光ファイバにおいて、
上記コアの仮想温度が1500℃以下であり、
上記光ファイバの端面部で仮想温度が低く、中央部で端面部よりも仮想温度が高くなるように、上記コアの仮想温度が長手方向で異なっている
ことを特徴とする光ファイバ。 - 利得媒質となる希土類が添加されたコアと上記コアの外周に形成されたクラッドとを備え、端面から入射された励起光によりレーザ光を発振させる光ファイバを光ファイバ母材から製造する製造方法において、
上記光ファイバ母材を加熱・溶融した後にアニール処理を行うことにより、上記コアの仮想温度が1500℃以下になるようにして、上記光ファイバ母材を線引きし、
上記アニール処理の後にCO 2 レーザ光照射を行うことにより、上記光ファイバの端面部で仮想温度が低く、中央部で端面部よりも仮想温度が高くなるように、上記コアの仮想温度を長手方向で変化させる
ことを特徴とする光ファイバの製造方法。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007157510A JP4851996B2 (ja) | 2007-06-14 | 2007-06-14 | 光ファイバ及びその製造方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007157510A JP4851996B2 (ja) | 2007-06-14 | 2007-06-14 | 光ファイバ及びその製造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008308361A JP2008308361A (ja) | 2008-12-25 |
JP4851996B2 true JP4851996B2 (ja) | 2012-01-11 |
Family
ID=40236298
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007157510A Expired - Fee Related JP4851996B2 (ja) | 2007-06-14 | 2007-06-14 | 光ファイバ及びその製造方法 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP4851996B2 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019226445A1 (en) | 2018-05-23 | 2019-11-28 | Corning Incorporated | Vacuum slow cooling device for optical fiber draw |
JP6826089B2 (ja) | 2018-10-30 | 2021-02-03 | ファナック株式会社 | ファイバレーザ用光ファイバ、ファイバレーザ及びファイバレーザ用光ファイバの製造方法 |
CN110187432B (zh) * | 2019-04-30 | 2020-11-03 | 上海大学 | 一种有源微晶光纤的制备方法及装置 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1288836B1 (it) * | 1996-11-19 | 1998-09-24 | Cselt Centro Studi Lab Telecom | Fibre ottiche monomodo attive e procedimento per la loro realizzazione |
JP2007197273A (ja) * | 2006-01-27 | 2007-08-09 | Fujikura Ltd | 光ファイバ素線及びその製造方法 |
-
2007
- 2007-06-14 JP JP2007157510A patent/JP4851996B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2008308361A (ja) | 2008-12-25 |
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