CN106904821A - 大尺寸光纤预制棒的生产工艺及其大尺寸光纤预制棒 - Google Patents
大尺寸光纤预制棒的生产工艺及其大尺寸光纤预制棒 Download PDFInfo
- Publication number
- CN106904821A CN106904821A CN201710081160.7A CN201710081160A CN106904821A CN 106904821 A CN106904821 A CN 106904821A CN 201710081160 A CN201710081160 A CN 201710081160A CN 106904821 A CN106904821 A CN 106904821A
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- heat
- plug
- generating wires
- optical fiber
- 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
- 239000013307 optical fiber Substances 0.000 title claims abstract description 37
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 31
- 238000005516 engineering process Methods 0.000 title claims abstract description 29
- 238000010438 heat treatment Methods 0.000 claims abstract description 66
- 238000000034 method Methods 0.000 claims abstract description 48
- 230000008021 deposition Effects 0.000 claims abstract description 11
- 239000011159 matrix material Substances 0.000 claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 11
- 239000001257 hydrogen Substances 0.000 claims description 10
- 229910052739 hydrogen Inorganic materials 0.000 claims description 10
- 238000005245 sintering Methods 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 230000002035 prolonged effect Effects 0.000 claims description 6
- 235000012239 silicon dioxide Nutrition 0.000 claims description 6
- VXEGSRKPIUDPQT-UHFFFAOYSA-N 4-[4-(4-methoxyphenyl)piperazin-1-yl]aniline Chemical compound C1=CC(OC)=CC=C1N1CCN(C=2C=CC(N)=CC=2)CC1 VXEGSRKPIUDPQT-UHFFFAOYSA-N 0.000 claims description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 230000018044 dehydration Effects 0.000 claims description 5
- 238000006297 dehydration reaction Methods 0.000 claims description 5
- 239000011859 microparticle Substances 0.000 claims description 5
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- 239000005049 silicon tetrachloride Substances 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 230000008602 contraction Effects 0.000 claims description 4
- 239000000155 melt Substances 0.000 claims description 4
- 230000007547 defect Effects 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 230000000977 initiatory effect Effects 0.000 description 3
- 239000000835 fiber Substances 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000011214 refractory ceramic Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
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
- C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
- C03B37/018—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD] by glass deposition on a glass substrate, e.g. by inside-, modified-, plasma-, or plasma modified- chemical vapour deposition [ICVD, MCVD, PCVD, PMCVD], i.e. by thin layer coating on the inside or outside of a glass tube or on a glass rod
-
- 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
- C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
- C03B37/018—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD] by glass deposition on a glass substrate, e.g. by inside-, modified-, plasma-, or plasma modified- chemical vapour deposition [ICVD, MCVD, PCVD, PMCVD], i.e. by thin layer coating on the inside or outside of a glass tube or on a glass rod
- C03B37/01807—Reactant delivery systems, e.g. reactant deposition burners
- C03B37/01815—Reactant deposition burners or deposition heating means
-
- 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
- C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
- C03B37/018—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD] by glass deposition on a glass substrate, e.g. by inside-, modified-, plasma-, or plasma modified- chemical vapour deposition [ICVD, MCVD, PCVD, PMCVD], i.e. by thin layer coating on the inside or outside of a glass tube or on a glass rod
- C03B37/01861—Means for changing or stabilising the diameter or form of tubes or rods
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General 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)
Abstract
Description
Claims (7)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910129028.8A CN109704561B (zh) | 2017-02-15 | 2017-02-15 | 大尺寸光纤预制棒的生产工艺 |
CN201910128912.XA CN109721237B (zh) | 2017-02-15 | 2017-02-15 | 光纤预制棒的生产工艺及其光纤预制棒 |
CN201710081160.7A CN106904821B (zh) | 2017-02-15 | 2017-02-15 | 大尺寸光纤预制棒的生产工艺及其大尺寸光纤预制棒 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710081160.7A CN106904821B (zh) | 2017-02-15 | 2017-02-15 | 大尺寸光纤预制棒的生产工艺及其大尺寸光纤预制棒 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201910129028.8A Division CN109704561B (zh) | 2017-02-15 | 2017-02-15 | 大尺寸光纤预制棒的生产工艺 |
CN201910128912.XA Division CN109721237B (zh) | 2017-02-15 | 2017-02-15 | 光纤预制棒的生产工艺及其光纤预制棒 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN106904821A true CN106904821A (zh) | 2017-06-30 |
CN106904821B CN106904821B (zh) | 2019-03-22 |
Family
ID=59207604
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201710081160.7A Active CN106904821B (zh) | 2017-02-15 | 2017-02-15 | 大尺寸光纤预制棒的生产工艺及其大尺寸光纤预制棒 |
CN201910128912.XA Active CN109721237B (zh) | 2017-02-15 | 2017-02-15 | 光纤预制棒的生产工艺及其光纤预制棒 |
CN201910129028.8A Active CN109704561B (zh) | 2017-02-15 | 2017-02-15 | 大尺寸光纤预制棒的生产工艺 |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
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CN201910128912.XA Active CN109721237B (zh) | 2017-02-15 | 2017-02-15 | 光纤预制棒的生产工艺及其光纤预制棒 |
CN201910129028.8A Active CN109704561B (zh) | 2017-02-15 | 2017-02-15 | 大尺寸光纤预制棒的生产工艺 |
Country Status (1)
Country | Link |
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CN (3) | CN106904821B (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111320374A (zh) * | 2018-12-15 | 2020-06-23 | 中天科技精密材料有限公司 | 光纤预制棒及其制备方法 |
CN116970881A (zh) * | 2023-09-22 | 2023-10-31 | 连云港天舒热处理科技有限公司 | 一种有色金属加工用热处理设备 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11171576A (ja) * | 1997-12-04 | 1999-06-29 | Furukawa Electric Co Ltd:The | 光ファイバ用ガラス母材の延伸方法 |
CN1403397A (zh) * | 2002-10-23 | 2003-03-19 | 长飞光纤光缆有限公司 | 一种高沉积速率pcvd工艺制作光纤芯棒的方法 |
CN101328013A (zh) * | 2007-06-22 | 2008-12-24 | 江苏亨通光纤科技有限公司 | 大尺寸光纤预制棒拉制光纤的方法 |
CN101811822A (zh) * | 2010-04-16 | 2010-08-25 | 长飞光纤光缆有限公司 | 一种pcvd工艺制作大直径光纤芯棒的方法 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2088238C (en) * | 1992-01-30 | 1998-08-18 | Masato Oku | Method of manufacturing optical fiber preform |
KR100987866B1 (ko) * | 2002-06-19 | 2010-10-13 | 스미토모 덴키 고교 가부시키가이샤 | 유리 모재의 연신 방법 및 이것에 이용되는 연신 장치 |
CN1197799C (zh) * | 2002-09-06 | 2005-04-20 | 江苏法尔胜光子有限公司 | 一种制造光纤预制棒的烧结工艺的方法 |
KR100896103B1 (ko) * | 2003-03-10 | 2009-05-07 | 엘에스전선 주식회사 | 수트 저감이 가능한 광섬유 모재 제조장치 |
JP2004338970A (ja) * | 2003-05-13 | 2004-12-02 | Sumitomo Electric Ind Ltd | ガラス母材の製造方法 |
EP1660413B1 (en) * | 2003-06-30 | 2011-03-23 | Prysmian S.p.A. | Method and apparatus for drilling preforms for holey optical fibers |
JP2005060148A (ja) * | 2003-08-08 | 2005-03-10 | Sumitomo Electric Ind Ltd | 光ファイバ用母材の製造方法及び光ファイバ用母材並びに光ファイバの製造方法及び光ファイバ |
JP2007223824A (ja) * | 2006-02-21 | 2007-09-06 | Shin Etsu Chem Co Ltd | 多孔質ガラス母材の焼結方法 |
JP2009001471A (ja) * | 2007-06-25 | 2009-01-08 | Sumitomo Electric Ind Ltd | ガラス延伸体製造方法 |
CN101428964B (zh) * | 2008-09-23 | 2011-01-12 | 富通集团有限公司 | 一种大尺寸光纤预制棒包层的制备方法 |
CN101792256B (zh) * | 2010-02-09 | 2011-12-28 | 中天科技精密材料有限公司 | 一种大尺寸光纤预制棒的测试方法 |
DE102011116806A1 (de) * | 2011-10-25 | 2013-04-25 | Heraeus Quarzglas Gmbh & Co. Kg | Verfahren zur Herstellung eines zylinderförmigen Bauteils aus Glas durch Elongieren |
CN102627399B (zh) * | 2012-04-18 | 2014-12-03 | 长飞光纤光缆股份有限公司 | 一种光纤预制棒的垂直拉伸方法及设备 |
JP6459585B2 (ja) * | 2015-02-10 | 2019-01-30 | 住友電気工業株式会社 | 光ファイバ用プリフォーム製造方法 |
CN106082632A (zh) * | 2016-06-16 | 2016-11-09 | 中天科技精密材料有限公司 | 一种自动消除管内化学汽相沉积法制备光纤预制棒过程中玻璃管弓曲度方法 |
-
2017
- 2017-02-15 CN CN201710081160.7A patent/CN106904821B/zh active Active
- 2017-02-15 CN CN201910128912.XA patent/CN109721237B/zh active Active
- 2017-02-15 CN CN201910129028.8A patent/CN109704561B/zh active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11171576A (ja) * | 1997-12-04 | 1999-06-29 | Furukawa Electric Co Ltd:The | 光ファイバ用ガラス母材の延伸方法 |
CN1403397A (zh) * | 2002-10-23 | 2003-03-19 | 长飞光纤光缆有限公司 | 一种高沉积速率pcvd工艺制作光纤芯棒的方法 |
CN101328013A (zh) * | 2007-06-22 | 2008-12-24 | 江苏亨通光纤科技有限公司 | 大尺寸光纤预制棒拉制光纤的方法 |
CN101811822A (zh) * | 2010-04-16 | 2010-08-25 | 长飞光纤光缆有限公司 | 一种pcvd工艺制作大直径光纤芯棒的方法 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111320374A (zh) * | 2018-12-15 | 2020-06-23 | 中天科技精密材料有限公司 | 光纤预制棒及其制备方法 |
CN111320374B (zh) * | 2018-12-15 | 2023-09-26 | 中天科技精密材料有限公司 | 光纤预制棒及其制备方法 |
CN116970881A (zh) * | 2023-09-22 | 2023-10-31 | 连云港天舒热处理科技有限公司 | 一种有色金属加工用热处理设备 |
CN116970881B (zh) * | 2023-09-22 | 2023-12-19 | 连云港天舒热处理科技有限公司 | 一种有色金属加工用热处理设备 |
Also Published As
Publication number | Publication date |
---|---|
CN109704561A (zh) | 2019-05-03 |
CN109721237A (zh) | 2019-05-07 |
CN109704561B (zh) | 2021-09-21 |
CN106904821B (zh) | 2019-03-22 |
CN109721237B (zh) | 2021-06-25 |
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Effective date of registration: 20200108 Address after: 300000 Tianjin Haitai Huayuan Industrial Zone Xiqing District Road No. 18 West 1--301 Co-patentee after: Hangzhou Futong Communication Technology Co., Ltd. Patentee after: Tianjin Fortis Group Co., Ltd. Co-patentee after: Tianjin Futong Xinmao Science and Technology Co., Ltd. Address before: 300000 Tianjin Haitai Huayuan Industrial Zone Xiqing District Road No. 18 West 1--301 Patentee before: Tianjin Fortis Group Co., Ltd. |
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Effective date of registration: 20200415 Address after: 300000 Tianjin Haitai Huayuan Industrial Zone Xiqing District Road No. 18 West 1--301 Co-patentee after: HANGZHOU FUTONG COMMUNICATION TECHNOLOGY Co.,Ltd. Patentee after: TIANJIN FUTONG GROUP Co.,Ltd. Co-patentee after: TIANJIN FUTONG XINMAO SCIENCE & TECHNOLOGY Co.,Ltd. Co-patentee after: SHENZHEN XIN'AOKE CABLE Co.,Ltd. Address before: 300000 Tianjin Haitai Huayuan Industrial Zone Xiqing District Road No. 18 West 1--301 Co-patentee before: HANGZHOU FUTONG COMMUNICATION TECHNOLOGY Co.,Ltd. Patentee before: TIANJIN FUTONG GROUP Co.,Ltd. Co-patentee before: TIANJIN FUTONG XINMAO SCIENCE & TECHNOLOGY Co.,Ltd. |
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Address after: 300000 West 1-301, No.18 Haitai West Road, Huayuan Industrial Zone, Xiqing District, Tianjin Patentee after: TIANJIN FUTONG GROUP Co.,Ltd. Patentee after: HANGZHOU FUTONG COMMUNICATION TECHNOLOGY Co.,Ltd. Patentee after: Tianjin Futong Information Technology Co.,Ltd. Patentee after: SHENZHEN XIN'AOKE CABLE Co.,Ltd. Address before: 300000 West 1-301, No.18 Haitai West Road, Huayuan Industrial Zone, Xiqing District, Tianjin Patentee before: TIANJIN FUTONG GROUP Co.,Ltd. Patentee before: HANGZHOU FUTONG COMMUNICATION TECHNOLOGY Co.,Ltd. Patentee before: TIANJIN FUTONG XINMAO SCIENCE & TECHNOLOGY Co.,Ltd. Patentee before: SHENZHEN XIN'AOKE CABLE Co.,Ltd. |
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Effective date of registration: 20210923 Address after: No.2 songpingshan Road, North Science Park, Nanshan District, Shenzhen, Guangdong 518000 Patentee after: SHENZHEN XIN'AOKE CABLE Co.,Ltd. Address before: 300000 West 1-301, No.18 Haitai West Road, Huayuan Industrial Zone, Xiqing District, Tianjin Patentee before: TIANJIN FUTONG GROUP Co.,Ltd. Patentee before: HANGZHOU FUTONG COMMUNICATION TECHNOLOGY Co.,Ltd. Patentee before: Tianjin Futong Information Technology Co.,Ltd. Patentee before: SHENZHEN XIN'AOKE CABLE Co.,Ltd. |
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