WO2006049186A1 - 光ファイバ母材の製造方法並びに光学用ガラスロッドおよび光ファイバ - Google Patents
光ファイバ母材の製造方法並びに光学用ガラスロッドおよび光ファイバ Download PDFInfo
- Publication number
- WO2006049186A1 WO2006049186A1 PCT/JP2005/020141 JP2005020141W WO2006049186A1 WO 2006049186 A1 WO2006049186 A1 WO 2006049186A1 JP 2005020141 W JP2005020141 W JP 2005020141W WO 2006049186 A1 WO2006049186 A1 WO 2006049186A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- entire length
- glass rod
- over
- optical fiber
- constant
- Prior art date
Links
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
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
- C03B37/01205—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments
- C03B37/01225—Means for changing or stabilising the shape, e.g. diameter, of tubes or rods in general, e.g. collapsing
- C03B37/01228—Removal of preform material
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2203/00—Fibre product details, e.g. structure, shape
- C03B2203/10—Internal structure or shape details
- C03B2203/18—Axial perturbations, e.g. in refractive index or composition
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Definitions
- Optical fiber preform manufacturing method optical glass rod, and optical fiber
- the present invention relates to a method for manufacturing an optical fiber preform, a glass rod, and an optical fiber. More specifically, a manufacturing method of an optical fiber preform for manufacturing an optical glass rod or optical fiber having a core portion whose diameter continuously changes with one end force directed toward the other end, and the optical fiber.
- the present invention also relates to an optical glass rod and an optical fiber in which the fiber preform force is also manufactured.
- optical fibers and quartz glass rods are used as optical components, and optical fiber glass rods with various specifications according to the application are used. It has been demanded. For example, there is a demand for optical fibers having different core diameters at both ends. Conventionally, this type of optical fiber has been manufactured as follows.
- An O porous core matrix is prepared. This porous core matrix is mixed with about 1000 ° C He and chlorine gas.
- the glass rod is dehydrated in a glass atmosphere and then converted into a transparent glass in a He atmosphere at approximately 1500 ° C.
- the glass rod thus obtained is stretched to a predetermined diameter to form a core base material, and glass fine particles having a SiO force for cladding are externally attached around the glass rod.
- the optical fiber preform manufactured as described above is uniformly formed in the longitudinal direction in terms of structure and composition. Therefore, when drawing an optical fiber preform into an optical fiber, for example, by drawing while changing the descent speed or drawing speed of the optical fiber preform, the optical fiber whose outer diameter gradually changes in the line direction. Can be made The Thus, an optical fiber having a core diameter that gradually changes in the longitudinal direction can be obtained.
- Patent Document 1 describes another method! According to the description in Patent Document 1, while rotating the optical fiber preform around its axis, the outer peripheral portion of the cladding layer of the optical fiber preform that is uniformly formed in the longitudinal direction in terms of structure and composition It is tapered by changing the cutting amount gradually in the longitudinal direction. Next, the tapered optical fiber preform is drawn to obtain an optical fiber preform having a uniform outer diameter again. By drawing such an optical fiber preform, it is possible to create an optical fiber whose core diameter gradually changes while the outer diameter is uniform. It is also possible to use the optical fiber preform before drawing as an optical glass rod as it is, as a light guide for visible light or ultraviolet light.
- Patent Document 1 Japanese Patent No. 3466251
- the present invention has been made in view of the above circumstances, and can be easily manufactured, an optical component having a uniform outer diameter in the longitudinal direction and a desired change in core diameter.
- An object of the present invention is to provide an optical fiber preform for manufacturing, a manufacturing method thereof, and an optical fiber.
- a method for manufacturing an optical fiber preform for an optical component according to the present invention includes: a core portion whose diameter is continuously changed by applying force to one end and the other end; Is a core part having a constant diameter over the entire length, and a core part having a constant diameter over the entire length.
- a glass rod having a cladding portion that surrounds the entire length and has a constant outer diameter over the entire length is heated to soften and stretched while changing the stretching speed to form a tapered glass rod; and And the step of cutting the outer peripheral surface force of the clad portion to make the outer diameter of the tapered glass rod constant over the entire length.
- a step of performing a heat treatment to remove residual strain inside the tape-shaped glass rod may be included.
- the residence strain is removed, the occurrence of cracks and the like can be prevented, and the glass rod can be cut with a high yield.
- the heat treatment step can be performed by a flame or an electric furnace.
- the step of making the outer diameter constant can be performed with a glass lathe. Thereby, the said heat processing can be implemented using the existing installation.
- a glass rod provided with a core portion having a constant diameter over the entire length and a cladding portion surrounding the core portion over the entire length and having a constant outer diameter over the entire length is heated.
- the process of drawing into a tapered glass rod by softening and changing the drawing speed, and cutting the outer peripheral surface force of the clad part of the tapered glass rod to make the outer diameter of the tapered glass rod constant over the entire length A core portion whose diameter is continuously changed toward the other end, and a clad portion which surrounds the core portion over the entire length and has a constant outer diameter over the entire length.
- An optical glass rod comprising This provides an optical glass rod whose core diameter changes continuously.
- a glass rod provided with a core portion having a constant diameter over the entire length and a cladding portion surrounding the core portion over the entire length and having a constant outer diameter over the entire length is heated.
- the process of drawing into a tapered glass rod by softening and changing the drawing speed, and cutting the outer peripheral surface force of the clad part of the tapered glass rod to make the outer diameter of the tapered glass rod constant over the entire length An optical fiber preform manufactured by a manufacturing method including a step of forming a core portion whose diameter continuously changes toward one end and the other end, and surrounds the core portion over the entire length and covers the entire length.
- An optical fiber having a cladding portion having a constant outer diameter is provided. This provides an optical fiber whose core diameter changes continuously.
- An optical fiber preform can be produced.
- cracks do not occur during cutting, which contributes to improved yield.
- an optical fiber having a uniform outer diameter and gradually changing core diameter can be obtained.
- FIG. 1 is a schematic view showing a glass rod in which the diameters of a core part and a clad part are uniform in the longitudinal direction.
- FIG. 2 is a schematic view showing a tapered glass rod whose outer diameter and core diameter are changed into a tapered shape by stretching.
- FIG. 3 is a schematic view showing an optical fiber preform in which the outer diameter is uniform in the longitudinal direction and the core diameter is changed into a tapered shape.
- the tapered glass rod 4 has residual strain generated in the transparent vitrification step, and cracking tends to occur if the outer peripheral portion is cut so far. Therefore, it is preferable to heat treat the tapered glass rod 4 with a flame or an electric furnace before cutting the outer periphery of the tapered glass rod 4. After the heat treatment, the cladding layer on the outer periphery of the tapered glass rod 4 is cut into a uniform outer diameter in the longitudinal direction, so that the outer diameter is uniform in the longitudinal direction and the core diameter is as shown in FIG. A changed optical fiber preform 5 is obtained.
- the refractive index distribution of the core may be a step type, a graded type, or an arbitrary distribution as long as it is constant in the longitudinal direction.
- a glass rod 3 having a uniform diameter in the longitudinal direction of the core portion 1 and the cladding portion 2 as shown in Fig. 1 was produced.
- the core diameter is 15mm and the outer diameter is 60mm.
- the glass rod 3 was attached to a glass lathe and heated, and one end was stretched so that the outer diameter was the original outer diameter and the other end was 20 mm in outer diameter (see FIG. 2).
- the tapered glass rod 4 was subjected to flame heat treatment with hydrogen at 200 L / min, oxygen at 100 L / min and a burner feed rate of 15 mm / min.
- the tapered glass rod 4 was uniformly cut with an outer diameter of 20 mm to obtain an optical fiber preform 5 having a uniform outer diameter in the longitudinal direction as shown in FIG.
- the core diameter remains at one end force S 15mm and the other end is 5mm.
- optical fiber preform 5 was heat-cut by heat treatment, cracks did not occur and the yield was improved.
- an optical fiber having a uniform outer diameter and a gradually changing core diameter in the longitudinal direction was obtained.
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- Engineering & Computer Science (AREA)
- Chemical & Material 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)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004320957A JP2006131444A (ja) | 2004-11-04 | 2004-11-04 | 光学部品用光ファイバ母材およびその製造方法、並びに光ファイバ |
JP2004-320957 | 2004-11-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006049186A1 true WO2006049186A1 (ja) | 2006-05-11 |
Family
ID=36319191
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/020141 WO2006049186A1 (ja) | 2004-11-04 | 2005-11-01 | 光ファイバ母材の製造方法並びに光学用ガラスロッドおよび光ファイバ |
Country Status (3)
Country | Link |
---|---|
JP (1) | JP2006131444A (ja) |
TW (1) | TW200619160A (ja) |
WO (1) | WO2006049186A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008063829A1 (de) | 2008-12-20 | 2010-06-24 | Heraeus Quarzglas Gmbh & Co. Kg | Verfahren zur Herstellung eines zylinderförmigen optischen Bauteils aus Quarzglas sowie nach dem Verfahren erhaltenes optisch aktives Bauteil |
CN109928614A (zh) * | 2019-03-29 | 2019-06-25 | 华中科技大学 | 一种锥形光纤的制备方法 |
Families Citing this family (15)
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JP2011228541A (ja) * | 2010-04-21 | 2011-11-10 | Photonic Science Technology Inc | テーパ形状光ファイバの製造方法 |
US9869432B2 (en) | 2013-01-30 | 2018-01-16 | Cree, Inc. | Luminaires using waveguide bodies and optical elements |
US9366396B2 (en) | 2013-01-30 | 2016-06-14 | Cree, Inc. | Optical waveguide and lamp including same |
US9625638B2 (en) * | 2013-03-15 | 2017-04-18 | Cree, Inc. | Optical waveguide body |
US10436969B2 (en) | 2013-01-30 | 2019-10-08 | Ideal Industries Lighting Llc | Optical waveguide and luminaire incorporating same |
US9291320B2 (en) | 2013-01-30 | 2016-03-22 | Cree, Inc. | Consolidated troffer |
US9690029B2 (en) | 2013-01-30 | 2017-06-27 | Cree, Inc. | Optical waveguides and luminaires incorporating same |
US9442243B2 (en) | 2013-01-30 | 2016-09-13 | Cree, Inc. | Waveguide bodies including redirection features and methods of producing same |
US9366799B2 (en) | 2013-03-15 | 2016-06-14 | Cree, Inc. | Optical waveguide bodies and luminaires utilizing same |
US10436970B2 (en) | 2013-03-15 | 2019-10-08 | Ideal Industries Lighting Llc | Shaped optical waveguide bodies |
US10209429B2 (en) | 2013-03-15 | 2019-02-19 | Cree, Inc. | Luminaire with selectable luminous intensity pattern |
US9651740B2 (en) | 2014-01-09 | 2017-05-16 | Cree, Inc. | Extraction film for optical waveguide and method of producing same |
US10416377B2 (en) | 2016-05-06 | 2019-09-17 | Cree, Inc. | Luminaire with controllable light emission |
US11719882B2 (en) | 2016-05-06 | 2023-08-08 | Ideal Industries Lighting Llc | Waveguide-based light sources with dynamic beam shaping |
CN113277727B (zh) * | 2021-07-22 | 2021-11-09 | 武汉光谷航天三江激光产业技术研究院有限公司 | 一种芯包比渐变的锥芯光纤的制备方法及锥芯光纤 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0431333A (ja) * | 1990-05-25 | 1992-02-03 | Nippon Telegr & Teleph Corp <Ntt> | フッ化物光ファイバの製造方法 |
JPH0532430A (ja) * | 1991-07-30 | 1993-02-09 | Fujikura Ltd | シリカ系テーパ型導光路の製造方法 |
JPH08201639A (ja) * | 1995-01-30 | 1996-08-09 | Fujikura Ltd | 低分散光ファイバ |
JPH1121142A (ja) * | 1997-06-30 | 1999-01-26 | Sumitomo Electric Ind Ltd | 光ファイバ製造方法および光ファイバ |
-
2004
- 2004-11-04 JP JP2004320957A patent/JP2006131444A/ja active Pending
-
2005
- 2005-11-01 WO PCT/JP2005/020141 patent/WO2006049186A1/ja active Application Filing
- 2005-11-03 TW TW094138532A patent/TW200619160A/zh unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0431333A (ja) * | 1990-05-25 | 1992-02-03 | Nippon Telegr & Teleph Corp <Ntt> | フッ化物光ファイバの製造方法 |
JPH0532430A (ja) * | 1991-07-30 | 1993-02-09 | Fujikura Ltd | シリカ系テーパ型導光路の製造方法 |
JPH08201639A (ja) * | 1995-01-30 | 1996-08-09 | Fujikura Ltd | 低分散光ファイバ |
JPH1121142A (ja) * | 1997-06-30 | 1999-01-26 | Sumitomo Electric Ind Ltd | 光ファイバ製造方法および光ファイバ |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008063829A1 (de) | 2008-12-20 | 2010-06-24 | Heraeus Quarzglas Gmbh & Co. Kg | Verfahren zur Herstellung eines zylinderförmigen optischen Bauteils aus Quarzglas sowie nach dem Verfahren erhaltenes optisch aktives Bauteil |
DE102008063829B4 (de) * | 2008-12-20 | 2011-01-13 | Heraeus Quarzglas Gmbh & Co. Kg | Verfahren zur Herstellung eines zylinderförmigen optischen Bauteils aus Quarzglas sowie nach dem Verfahren erhaltenes optisch aktives Bauteil |
CN109928614A (zh) * | 2019-03-29 | 2019-06-25 | 华中科技大学 | 一种锥形光纤的制备方法 |
Also Published As
Publication number | Publication date |
---|---|
JP2006131444A (ja) | 2006-05-25 |
TW200619160A (en) | 2006-06-16 |
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