JP7453331B2 - 中空コアファイバの製造方法および中空コアファイバ用プリフォームの製造方法 - Google Patents
中空コアファイバの製造方法および中空コアファイバ用プリフォームの製造方法 Download PDFInfo
- Publication number
- JP7453331B2 JP7453331B2 JP2022502575A JP2022502575A JP7453331B2 JP 7453331 B2 JP7453331 B2 JP 7453331B2 JP 2022502575 A JP2022502575 A JP 2022502575A JP 2022502575 A JP2022502575 A JP 2022502575A JP 7453331 B2 JP7453331 B2 JP 7453331B2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- cladding
- preform
- cylinder
- hollow core
- 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.)
- Active
Links
Images
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
- C03B37/01211—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments by inserting one or more rods or tubes into a tube
- C03B37/0122—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments by inserting one or more rods or tubes into a tube for making preforms of photonic crystal, microstructured or holey optical fibres
-
- 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
- C03B37/02781—Hollow fibres, e.g. holey fibres
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/04—Re-forming tubes or rods
- C03B23/047—Re-forming tubes or rods by drawing
-
- 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
- C03B37/01211—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments by inserting one or more rods or tubes into a tube
-
- 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
- C03B37/0124—Means for reducing the diameter of rods or tubes by drawing, e.g. for preform draw-down
-
- 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
- C03B37/0124—Means for reducing the diameter of rods or tubes by drawing, e.g. for preform draw-down
- C03B37/01242—Controlling or regulating the down-draw process
-
- 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
- C03B37/0124—Means for reducing the diameter of rods or tubes by drawing, e.g. for preform draw-down
- C03B37/01245—Means for reducing the diameter of rods or tubes by drawing, e.g. for preform draw-down by drawing and collapsing
-
- 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
- C03B2203/14—Non-solid, i.e. hollow products, e.g. hollow clad or with core-clad interface
-
- 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
- C03B2203/14—Non-solid, i.e. hollow products, e.g. hollow clad or with core-clad interface
- C03B2203/16—Hollow core
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2203/00—Fibre product details, e.g. structure, shape
- C03B2203/42—Photonic crystal fibres, e.g. fibres using the photonic bandgap PBG effect, microstructured or holey optical fibres
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/02295—Microstructured optical fibre
- G02B6/023—Microstructured optical fibre having different index layers arranged around the core for guiding light by reflection, i.e. 1D crystal, e.g. omniguide
- G02B6/02304—Core having lower refractive index than cladding, e.g. air filled, hollow core
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP19186858.7A EP3766840B1 (de) | 2019-07-17 | 2019-07-17 | Verfahren zur herstellung einer hohlkernfaser und zur herstellung einer vorform für eine hohlkernfaser |
| EP19186858.7 | 2019-07-17 | ||
| PCT/EP2020/070016 WO2021009239A1 (de) | 2019-07-17 | 2020-07-15 | Verfahren zur herstellung einer hohlkernfaser und zur herstellung einer vorform für eine hohlkernfaser |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2022541775A JP2022541775A (ja) | 2022-09-27 |
| JP2022541775A5 JP2022541775A5 (https=) | 2023-06-01 |
| JP7453331B2 true JP7453331B2 (ja) | 2024-03-19 |
Family
ID=67402878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2022502575A Active JP7453331B2 (ja) | 2019-07-17 | 2020-07-15 | 中空コアファイバの製造方法および中空コアファイバ用プリフォームの製造方法 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20220242773A1 (https=) |
| EP (1) | EP3766840B1 (https=) |
| JP (1) | JP7453331B2 (https=) |
| CN (1) | CN114007991B (https=) |
| WO (1) | WO2021009239A1 (https=) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2583352B (en) * | 2019-04-24 | 2023-09-06 | Univ Southampton | Antiresonant hollow core fibre, preform therefor and method of fabrication |
| CN114409242B (zh) * | 2021-12-01 | 2023-08-18 | 浙江富通光纤技术有限公司 | 光纤预制棒的制造工艺以及光纤 |
| CN115072983B (zh) * | 2022-06-10 | 2024-01-16 | 武汉长盈通光电技术股份有限公司 | 空芯反谐振光纤中间体预制棒的制备方法 |
| US12607800B2 (en) | 2022-08-01 | 2026-04-21 | Corning Incorporated | Hollow-core optical fibers and methods for producing the same |
| AU2024270457A1 (en) | 2023-05-11 | 2026-01-15 | University Of Central Florida Research Foundation, Inc. | Anti-resonant hollow-core fibers featuring support structures |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008029920A (ja) | 2006-07-26 | 2008-02-14 | Agc Techno Glass Co Ltd | 液体吐出ノズル及び液体吐出ノズルの製造方法 |
| JP2008540321A (ja) | 2005-05-16 | 2008-11-20 | ヘレウス クワルツグラス ゲーエムベーハー ウント コンパニー カーゲー | 石英ガラスの中空シリンダーを延伸することにより石英ガラスチューブを製造する方法 |
| JP2017014099A (ja) | 2015-07-03 | 2017-01-19 | ヘレウス・クアルツグラース・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング・ウント・コンパニー・コマンディット・ゲゼルシャフトHeraeus Quarzglas GmbH & Co. KG | 石英ガラスのサブストレート管を製造する方法 |
| WO2018169487A1 (en) | 2017-03-14 | 2018-09-20 | Nanyang Technological University | Fiber preform, optical fiber and methods for forming the same |
| JP2018533042A (ja) | 2015-08-26 | 2018-11-08 | マツクス−プランク−ゲゼルシヤフト ツール フエルデルング デル ヴイツセンシヤフテン エー フアウMAX−PLANCK−GESELLSCHAFT ZUR FOeRDERUNG DER WISSENSCHAFTEN E.V. | 中空コア・ファイバおよびその製造方法 |
Family Cites Families (43)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3384567A (en) * | 1965-10-22 | 1968-05-21 | Gen Electric | Electrolyte guide member |
| IT1159357B (it) * | 1983-02-08 | 1987-02-25 | Olivetti & Co Spa | Procedimento ed apparecchiature per la fabbricazione di elementi profilati di materiale deformabile particolarmente per dispositivi stampanti a getto di inchiostro |
| JP2980501B2 (ja) * | 1992-11-19 | 1999-11-22 | 信越石英株式会社 | 大型石英ガラス管、大型石英ガラスプリフォ−ムおよびそれらの製造方法 |
| EP0598349B1 (en) * | 1992-11-19 | 1998-07-29 | Shin-Etsu Quartz Products Co., Ltd. | Process for manufacturing a large sized quartz glass tube, a preform and an optical fiber |
| DE19856892C2 (de) * | 1998-12-10 | 2001-03-15 | Heraeus Quarzglas | Verfahren zur Herstellung eines Rohres aus glasigem Werkstoff, insbesondere aus Quarzglas |
| CA2371250A1 (en) * | 1999-04-26 | 2000-11-02 | Corning Incorporated | An optical fiber and a method for fabricating a low polarization-mode dispersion and low attenuation optical fiber |
| CN1564789A (zh) * | 2002-01-30 | 2005-01-12 | 住友电气工业株式会社 | 制造玻璃管的方法和设备 |
| JP4466813B2 (ja) * | 2002-03-14 | 2010-05-26 | 日本電気硝子株式会社 | ガラスプリフォームおよびその製造方法 |
| JP2004137095A (ja) * | 2002-10-16 | 2004-05-13 | Mitsubishi Cable Ind Ltd | 光ファイバ母材の製造方法 |
| US6917741B2 (en) * | 2002-11-18 | 2005-07-12 | Corning Incorporated | Methods for manufacturing microstructured optical fibers with arbitrary core size |
| JP2004226539A (ja) * | 2003-01-21 | 2004-08-12 | Masataka Nakazawa | 光ファイバ及びその製造方法 |
| CN100351192C (zh) * | 2003-03-21 | 2007-11-28 | 赫罗伊斯·坦尼沃有限责任公司 | 用于生产预制体的合成二氧化硅玻璃管、用垂直拉丝工艺生产它的方法和所述管的用途 |
| DE10393680B4 (de) * | 2003-03-21 | 2009-03-26 | Heraeus Quarzglas Gmbh & Co. Kg | Rohr aus synthetischem Quarzglas für die Herstellung einer Vorform, Verfahren für seine Herstellung in einem Vertikalziehverfahren und Verwendung des Rohres |
| JP4657208B2 (ja) * | 2003-07-11 | 2011-03-23 | 富士フイルム株式会社 | プラスチック光ファイバ及びその製造方法 |
| DE10333059A1 (de) * | 2003-07-18 | 2005-02-17 | Heraeus Tenevo Ag | Verfahren zur Herstellung eines optischen Bauteils aus Quarzglas sowie Hohlzylinder aus Quarzglas zur Durchführung des Verfahrens |
| JP4022769B2 (ja) * | 2003-11-20 | 2007-12-19 | 住友電気工業株式会社 | ガラスパイプ加工方法 |
| DE10357063B3 (de) * | 2003-12-04 | 2005-04-21 | Heraeus Tenevo Ag | Vertikalziehverfahren zur Herstellung eines zylinderförmigen Glaskörpers und Vorrichtung zur Durchführung des Verfahrens |
| GB0408082D0 (en) * | 2004-04-08 | 2004-05-12 | Blazephotonics Ltd | Method for making an optical fibre |
| DE102004054392A1 (de) | 2004-08-28 | 2006-03-02 | Heraeus Quarzglas Gmbh & Co. Kg | Verfahren zum Verbinden von Bauteilen aus hochkieselsäurehaltigem Werkstoff, sowie aus derartigen Bauteilen zusammengefügter Bauteil-Verbund |
| DE102004050515B4 (de) * | 2004-10-15 | 2007-08-02 | Heraeus Tenevo Gmbh | Verfahren zur Herstellung von Rohren aus Quarzglas |
| FR2896795B1 (fr) * | 2006-01-27 | 2008-04-18 | Draka Compteq France | Procede de fabrication d'une preforme de fibre optique |
| JP5170863B2 (ja) * | 2007-06-14 | 2013-03-27 | 古河電気工業株式会社 | ホーリーファイバの製造方法 |
| JP2009001471A (ja) * | 2007-06-25 | 2009-01-08 | Sumitomo Electric Ind Ltd | ガラス延伸体製造方法 |
| US8020410B2 (en) * | 2007-11-15 | 2011-09-20 | Corning Incorporated | Methods for making optical fiber preforms and microstructured optical fibers |
| JP5203262B2 (ja) * | 2009-03-17 | 2013-06-05 | 日本電信電話株式会社 | 光ファイバの製造方法 |
| DE102009014418B3 (de) * | 2009-03-26 | 2010-04-15 | Heraeus Quarzglas Gmbh & Co. Kg | Ziehverfahren zur Herstellung zylinderförmiger Bauteile aus Quarzglas |
| DE102011103686B4 (de) * | 2010-06-18 | 2016-07-14 | Schott Ag | Verfahren und Vorrichtung zur Herstellung einer mikrostrukturierten Faser mittels Hybridheiztechnik |
| GB201111336D0 (en) * | 2011-07-01 | 2011-08-17 | Ceravision Ltd | Glass tube |
| DE102011116806B4 (de) * | 2011-10-25 | 2025-01-16 | Heraeus Quarzglas Gmbh & Co. Kg | Verfahren zur Herstellung eines zylinderförmigen Bauteils aus Glas durch Elongieren |
| US9212082B2 (en) * | 2012-12-26 | 2015-12-15 | Heraeus Quarzglas Gmbh & Co. Kg | System and method for fabricating optical fiber preform and optical fiber |
| JP2017511897A (ja) * | 2014-02-17 | 2017-04-27 | ショット アクチエンゲゼルシャフトSchott AG | フォトニック結晶ファイバ、特に赤外線波長領域用のシングルモードファイバ及びフォトニック結晶ファイバの製造方法 |
| GB2526879A (en) * | 2014-06-06 | 2015-12-09 | Univ Southampton | Hollow-core optical fibers |
| EP3034477B1 (de) * | 2014-12-19 | 2019-02-06 | Heraeus Quarzglas GmbH & Co. KG | Verfahren zur herstellung eines rohres aus glas |
| EP3088370B1 (de) * | 2015-04-28 | 2018-09-26 | Heraeus Quarzglas GmbH & Co. KG | Verfahren und vorrichtung zur herstellung eines rohres aus glas |
| CN113608296A (zh) * | 2015-12-23 | 2021-11-05 | Nkt光子学有限公司 | 中空芯光纤和激光系统 |
| CN110121482B (zh) * | 2016-11-30 | 2022-05-27 | 康宁股份有限公司 | 用于控制玻璃管锥度的方法和设备 |
| GB201710813D0 (en) * | 2017-07-05 | 2017-08-16 | Univ Southampton | Method for fabricating an optical fibre preform |
| GB2566466A (en) * | 2017-09-13 | 2019-03-20 | Univ Southampton | Antiresonant hollow core preforms and optical fibres and methods of fabrication |
| GB2576190B (en) * | 2018-08-08 | 2022-03-09 | Univ Southampton | Hollow core optical fibre |
| WO2020200637A1 (en) * | 2019-04-03 | 2020-10-08 | Asml Netherlands B.V. | Optical fiber |
| DE102019004113A1 (de) * | 2019-06-11 | 2020-12-17 | Friedrich-Schiller-Universität Jena | Verfahren zur Herstellung lateral Licht abstahlender Glasfasern und danach hergestellte Glasfasern |
| CN111812772B (zh) * | 2020-06-15 | 2023-02-28 | 艾菲博(宁波)光电科技有限责任公司 | 一种空芯保偏反谐振光纤及其制备方法 |
| CN111977959B (zh) * | 2020-08-25 | 2021-10-22 | 东北大学 | 用气压控制气孔尺寸的v型高双折射微结构光纤及其制法 |
-
2019
- 2019-07-17 EP EP19186858.7A patent/EP3766840B1/de active Active
-
2020
- 2020-07-15 CN CN202080043628.3A patent/CN114007991B/zh active Active
- 2020-07-15 US US17/625,952 patent/US20220242773A1/en active Pending
- 2020-07-15 JP JP2022502575A patent/JP7453331B2/ja active Active
- 2020-07-15 WO PCT/EP2020/070016 patent/WO2021009239A1/de not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008540321A (ja) | 2005-05-16 | 2008-11-20 | ヘレウス クワルツグラス ゲーエムベーハー ウント コンパニー カーゲー | 石英ガラスの中空シリンダーを延伸することにより石英ガラスチューブを製造する方法 |
| JP2008029920A (ja) | 2006-07-26 | 2008-02-14 | Agc Techno Glass Co Ltd | 液体吐出ノズル及び液体吐出ノズルの製造方法 |
| JP2017014099A (ja) | 2015-07-03 | 2017-01-19 | ヘレウス・クアルツグラース・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング・ウント・コンパニー・コマンディット・ゲゼルシャフトHeraeus Quarzglas GmbH & Co. KG | 石英ガラスのサブストレート管を製造する方法 |
| JP2018533042A (ja) | 2015-08-26 | 2018-11-08 | マツクス−プランク−ゲゼルシヤフト ツール フエルデルング デル ヴイツセンシヤフテン エー フアウMAX−PLANCK−GESELLSCHAFT ZUR FOeRDERUNG DER WISSENSCHAFTEN E.V. | 中空コア・ファイバおよびその製造方法 |
| WO2018169487A1 (en) | 2017-03-14 | 2018-09-20 | Nanyang Technological University | Fiber preform, optical fiber and methods for forming the same |
Non-Patent Citations (2)
| Title |
|---|
| JASION, Gregory T. et al.,Fabrication of tubular anti-resonant hollow core fibers: modelling, draw dynamics and process optimization,Opt. Express,米国,Optica Publishing Group,2019年06月04日,Vol. 27,No. 15,pp. 20567-20582,DOI: 10.1364/OE.27.020567 |
| KOSOLAPOV, A. F. et al.,Hollow-core revolver fibre with a double-capillary reflective cladding,Quantum Electron.,英国,IOP Publishing Ltd.,2016年03月29日,Vol. 46, No. 3,pp. 267-270,DOI: 10.1070/QEL15972 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114007991B (zh) | 2023-11-21 |
| US20220242773A1 (en) | 2022-08-04 |
| EP3766840C0 (de) | 2024-11-20 |
| CN114007991A (zh) | 2022-02-01 |
| EP3766840A1 (de) | 2021-01-20 |
| EP3766840B1 (de) | 2024-11-20 |
| JP2022541775A (ja) | 2022-09-27 |
| WO2021009239A1 (de) | 2021-01-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7453259B2 (ja) | 中空コアファイバの製造方法および中空コアファイバ用プリフォームの製造方法 | |
| JP7582982B2 (ja) | 中空コアファイバの製造方法および中空コアファイバ用プリフォームの製造方法 | |
| JP7441299B2 (ja) | 中空コアファイバの製造方法および中空コアファイバ用プリフォームの製造方法 | |
| JP7453331B2 (ja) | 中空コアファイバの製造方法および中空コアファイバ用プリフォームの製造方法 | |
| JP7546650B2 (ja) | 中空コアファイバの製造方法および中空コアファイバ用プリフォームの製造方法 | |
| JP7623959B2 (ja) | 中空コアファイバの製造方法および中空コアファイバ用プリフォームの製造方法 | |
| JP7553485B2 (ja) | 中空コアファイバの製造方法および中空コアファイバ用プリフォームの製造方法 | |
| CN113891864B (zh) | 制造空芯光纤和空芯光纤预制件的方法 | |
| JP7520896B2 (ja) | 中空コアファイバの製造方法および中空コアファイバ用プリフォームの製造方法 | |
| JP7583784B2 (ja) | 中空コアファイバの製造方法および中空コアファイバ用プリフォームの製造方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20230523 |
|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20230523 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20240206 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20240219 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20240307 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 7453331 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |