WO2020186696A1 - 光子晶体光纤及其制备方法 - Google Patents

光子晶体光纤及其制备方法 Download PDF

Info

Publication number
WO2020186696A1
WO2020186696A1 PCT/CN2019/103381 CN2019103381W WO2020186696A1 WO 2020186696 A1 WO2020186696 A1 WO 2020186696A1 CN 2019103381 W CN2019103381 W CN 2019103381W WO 2020186696 A1 WO2020186696 A1 WO 2020186696A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical fiber
photonic crystal
air holes
fiber preform
preform
Prior art date
Application number
PCT/CN2019/103381
Other languages
English (en)
French (fr)
Chinese (zh)
Inventor
黄俊昌
雷民
胡浩亮
周峰
李鹤
熊前柱
徐子立
聂琪
潘瑞
万鹏
杨春燕
Original Assignee
中国电力科学研究院有限公司
国家电网有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 中国电力科学研究院有限公司, 国家电网有限公司 filed Critical 中国电力科学研究院有限公司
Priority to JP2019566661A priority Critical patent/JP7061628B2/ja
Publication of WO2020186696A1 publication Critical patent/WO2020186696A1/zh

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
    • C03B37/014—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
    • C03B37/02—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

Definitions

  • This article relates to the technical field of sensing fibers, such as a rotating photonic crystal fiber applied to an all-fiber current sensor and a preparation method thereof.
  • Photonic crystal fiber also known as microstructure fiber or holey fiber
  • PCF has a more complex refractive index distribution in the cross section, and usually contains pores in different arrangements.
  • the size of these pores is roughly the same as the wavelength of light.
  • the function of the photonic crystal fiber is also related to the size and arrangement of these pores.
  • the special arrangement structure of the air holes in the photonic crystal fiber cladding makes it present many peculiar characteristics compared with traditional optical fibers, such as non-stop single-mode transmission, high birefringence, high nonlinearity, adjustable dispersion and large Unique properties such as mode area have become a hot spot in current research and are widely used in fields such as optical sensing, optical communications, and nonlinear optics.
  • the sensing fiber used is a rotating birefringent fiber.
  • the rotation reduces the linear birefringence in the fiber and increases the internal stress and circular birefringence.
  • the Chinese Invention Patent (CN105541105A) discloses a method and equipment for the preparation of a high-birefringence rotating optical fiber.
  • the optical fiber preparation method adopts the integrated control of rotation and winding, and the preform is sent by the rod feeding device to the drawing furnace to be heated to a molten state
  • the traction of the optical fiber is formed by the speed difference between the fly yoke and the take-up drum, and the rotation of the fly yoke will cause the twist of the optical fiber.
  • the twist can be transferred from bottom to top to the fusion zone, and then rotate in the fiber to achieve the purpose of producing rotating optical fiber.
  • the above is suitable for high-birefringence rotating fibers and other fibers that require a single direction of rotation and require a high rotational speed.
  • the residual linear birefringence in the above-mentioned fibers and the instability of this structure will affect The result of the current measurement has a greater impact.
  • This article provides a photonic crystal fiber and its preparation method, which overcomes the problem of poor sensing effect and easy collapse and deformation of pores in related technologies.
  • the photonic crystal fiber has high circular birefringence and good sensing effect. , Can avoid the collapse and deformation of the pores, and realize the high circularity of the photonic crystal fiber.
  • This article provides a photonic crystal fiber, including a fiber body, a core is provided at the center of the fiber body, a plurality of air holes are arranged in the fiber body, each of the air holes is spiral and the plurality of air holes The rotation directions of the air holes are the same, and on any cross section of the optical fiber body along the radial direction of the optical fiber body, the plurality of air holes are arranged to surround the fiber core.
  • the present invention also provides a method for manufacturing the photonic crystal fiber, which is used to manufacture the photonic crystal fiber described in any one of the above, and the method includes:
  • drawing the optical fiber preform includes:
  • the optical fiber preform is rotated and drawn, and when the optical fiber preform is rotated and drawn, an inert gas is injected into the air hole in the optical fiber body, and the air is maintained by adjusting the pressure of the inert gas and the drawing speed The size of the hole.
  • Figure 1 is a schematic diagram of the photonic crystal fiber herein;
  • Figure 2 is a cross-sectional view of the photonic crystal fiber herein;
  • Figure 3 is a schematic diagram of the influence of different parameters in this paper on the optical fiber circular birefringence.
  • this embodiment provides a photonic crystal fiber, including a fiber body 10, a core 11 is provided at the center of the fiber body 10, and a plurality of continuous rotations are provided in the fiber body 10
  • the air holes 12 are helical and the rotation directions of the air holes 12 are the same.
  • the arrangement of the air holes 12 in any cross section of the optical fiber body 10 in the radial direction is It is arranged in a hexagon around the core 11.
  • the multiple air holes 12 may all be left-threaded or right-threaded, so that the rotation directions of the multiple air holes 12 are the same.
  • the arrangement of the plurality of air holes 12 is a hexagonal symmetrical array arrangement around the core 11; in some embodiments, the arrangement of the plurality of air holes 12 is formed
  • the hexagon (hereinafter referred to as the “hexagon” in this paragraph) is arranged in a centrally symmetrical pattern centered on the center of the core 11; in some embodiments, the hexagon is A regular hexagon with the center of the core 11 as the center is arranged; in some embodiments, the hexagon is one layer, and six layers of the hexagon are arranged around the core 11 In some embodiments, the hexagon includes multiple layers, and each layer of the hexagon consists of six air holes 12 arranged around the core 11
  • the air holes 12 are composed of the hexagonal multi-layers including a hexagonal outer layer and a hexagonal inner layer, and the hexagonal outer layer surrounds the periphery of the hexagonal inner layer.
  • the photonic crystal fiber used in this embodiment includes a fiber body 10, a core 11 is provided at the center of the fiber body 10, a plurality of continuously rotating air holes 12 are provided in the fiber body 10, and the air The holes 12 are in a spiral shape and the rotation directions of the multiple air holes 12 are the same.
  • the rotation space structure of the air holes 12 is used to generate different transmission conditions for left-handed polarized light and right-handed polarized light, thereby having a better circular birefringence effect. , It can provide better sensing effect.
  • the nature of circular birefringence is because a part of the modes transmitted in the core 11 diffuses between the air holes 12, and these radial modes are rotating
  • the optical fiber is rotated to create different transmission conditions for the left-handed and right-handed circular polarization modes, thereby producing a circular birefringence effect, and on any cross section of the optical fiber body 10 along the radial direction, the multiple air holes
  • the arrangement of 12 is a hexagonal symmetrical array arrangement around the core 11, which is beneficial to avoid linear birefringence.
  • the optical fiber body 10 is doped with one or more chemical materials according to a preset weight percentage, and the chemical materials include silicon dioxide and terbium, so as to avoid differences.
  • the chemical material may further include germanium dioxide, trivalent aluminum ions, and trivalent terbium ions (that is, the optical fiber body 10 may further include germanium dioxide, trivalent aluminum ions, and trivalent terbium ions. ), and the weight percentage of the silica occupies more than 90% of the fiber body 10, so that the photonic crystal fiber has better temperature characteristics than the existing sensing fiber, which is beneficial to promote all-fiber current Wide range of applications of sensors.
  • the core 11 does not have the air hole 12. Part of the mode transmitted in the core 11 diffuses into the silica structure between the air holes 12. These radial modes are rotated in the rotating fiber, creating a difference between the left-handed and right-handed circular polarization modes. The transmission conditions, resulting in circular birefringence.
  • the size of the plurality of air holes 12 is equal, and the arrangement of the plurality of air holes 12 is a hexagonal symmetrical array arrangement around the core 11, and the optical fiber body 10 is arranged along any one of the radial directions.
  • the hexagons on the cross-section may include multiple layers, that is, layers including multiple hexagons with the same center and different side lengths.
  • the hexagons are arranged symmetrically, and the rotation rate obtained after calculation is compared with The optical fiber preform with this cross-section is rotated and drawn, so that the obtained photonic crystal fiber can ensure the circular birefringence in the fiber to the greatest extent.
  • This embodiment provides a method for manufacturing a photonic crystal fiber, which is used to manufacture the photonic crystal fiber described in the first embodiment, including the steps of manufacturing an optical fiber preform and a drawing step of the optical fiber preform, wherein the drawing step of the optical fiber preform Including a heating step and a rotating drawing step, and during the rotating drawing, an inert gas is injected into the air hole 12 in the optical fiber body 10, and the pressure of the inert gas and the drawing speed are adjusted to maintain the air hole 12 Size ratio.
  • optical fiber preform becomes the optical fiber body 10 after undergoing the spinning drawing process.
  • This embodiment provides a method for preparing a photonic crystal fiber, which is used to fabricate the photonic crystal fiber described in the first embodiment, including the steps of preparing the fiber preform and the drawing step of the fiber preform, so as to ensure the smooth production of the fiber.
  • the drawing step of the optical fiber preform includes a heating step and a rotating drawing step, and during the rotating drawing, an inert gas is injected into the air hole 12 in the optical fiber body 10, and the pressure of the inert gas and the drawing speed are adjusted. Maintaining the size ratio of the air holes 12 can avoid the collapse and deformation of the air holes 12, so that the formed optical fiber is not easily deformed, has a high circular birefringence, and is beneficial to avoid linear birefringence.
  • the heating step is: heating one end of the optical fiber preform to melt it. Specifically, the head of the optical fiber preform is heated by electric heating, and heated to a molten state to form an optical fiber, thereby facilitating wire drawing.
  • the rotating drawing step is: drawing the heated optical fiber preform while rotating the rod body of the optical fiber preform along the axial direction of the optical fiber body at a uniform speed, thereby facilitating good drawing.
  • the manufacturing steps of the optical fiber preform include: preparing a capillary; forming the capillary stack into a shape of a designed size; and using a plasma chemical vapor deposition (Plasma Chemical Vapor Deposition, PCVD) process to make a cladding.
  • PCVD plasma chemical vapor deposition
  • the production of the cladding refers to the use of a PCVD deposition method to produce the optical fiber preform.
  • the inner cavity of the capillary tube can form the prepared air hole of the photonic crystal fiber after the spinning drawing process.
  • a photonic crystal fiber corresponding to the required working wavelength can be obtained. Since different parameters have different effects on the circular birefringence of the fiber, it is necessary to find the appropriate parameters to obtain the optimal circular birefringence. Specifically, if the diameter of the air holes 12 is d, the hole spacing is ⁇ , the working wavelength is ⁇ , and the rotation rate is ⁇ . In order to make the photonic crystal fiber obtain better circular birefringence, two parameters d/ ⁇ and ⁇ / ⁇ can be set. Wherein, when the ratio of the diameter of the air holes 12 to the hole spacing of the air holes 12 is 0.25-0.9, a better circular birefringence can be obtained.
  • BC/ ⁇ can take the maximum value.
  • the ratio of the diameter of the air hole 12 to the distance between the air holes 12 is 0.6
  • the rotating photonic crystal fiber provides a relatively constant BC/ ⁇ value in a wide wavelength range, and the circular birefringence is the best.
  • the ratio of the hole spacing of the air holes 12 to the working wavelength is 1.1-2
  • a suitable structure can be selected according to the wavelength to obtain better performance.
  • Lower circular birefringence When the ratio of the hole spacing of the air holes 12 to the working wavelength is 1.5, the circular birefringence is the best.
  • the distance between two adjacent air holes 12 is substantially the same, and the diameter of each air hole 12 is substantially the same.
  • the ratio of the air hole spacing ⁇ to the working wavelength ⁇ is the abscissa
  • the ratio of the circular birefringence parameter BC to the rotation rate ⁇ is the ordinate to show multiple fitting curves.
  • Each line of the fitted curve corresponds to the ratio of the diameter d of the air hole to the distance ⁇ of the air hole. If the curve with the smallest average slope among the multiple fitting curves is selected, the ratio of the air hole diameter d to the air hole spacing ⁇ corresponding to the curve is obtained, and each parameter is obtained according to the fitting function corresponding to the curve tends to be stable .
  • the curve with the smallest average slope among the multiple fitting curves is selected, and the purpose is to select the most stable curve, which has a long stationary section, and the ordinate is almost unchanged with the change of the abscissa.
  • One end curve interval is selected.
  • the fiber can obtain a relatively constant BC/ ⁇ in a wide wavelength range;
  • the rotation rate ⁇ is obtained by the properties of the fiber material and the expected circular birefringence parameter;
  • the optical fiber section parameters include the diameter of the air holes on the optical fiber section and the air hole spacing; rotating the curve with the smallest average slope among the multiple fitting curves to confirm the parameters can obtain the optical fiber parameters applicable to a wider wavelength range, and the corresponding optical fiber is not only It is suitable for the aforementioned fixed working wavelength, and it is also suitable for working wavelengths within a point before and after it.
  • the method for manufacturing the photonic crystal fiber is used to manufacture the above-mentioned photonic crystal fiber, and the method includes:
  • drawing the optical fiber preform includes:
  • the optical fiber preform is rotated and drawn, and when the optical fiber preform is rotated and drawn, an inert gas is injected into the air hole in the optical fiber body, and the air is maintained by adjusting the pressure of the inert gas and the drawing speed The size of the hole.
  • the heating of the optical fiber preform includes heating one end of the optical fiber preform to melt one end of the optical fiber preform.
  • the rotating and drawing of the optical fiber preform is: drawing the heated optical fiber preform while rotating the rod body of the optical fiber preform at a uniform speed along the axis of the optical fiber body.
  • the manufacturing of the optical fiber preform includes:
  • the cladding layer is made using a plasma chemical vapor deposition process.
  • the method further includes: setting the ratio of the diameter of the air holes to the distance between the air holes to be 0.25-0.9.
  • the method further includes: setting the ratio of the hole spacing of the air holes to the operating wavelength to be 1.1-2.
  • the photonic crystal fiber and the preparation method thereof described herein comprise a fiber body, a core is arranged at the center of the fiber body, and a plurality of continuously rotating air holes are arranged in the fiber body, and the air holes are in a spiral shape. And the rotation direction of the multiple air holes is the same, and the rotating space structure of the air holes is used to generate different transmission conditions for left-handed polarized light and right-handed polarized light, thereby having a better circular birefringence effect and being able to provide better transmission.
  • the arrangement of the plurality of air holes is a hexagonal symmetrical array arrangement around the core, which is beneficial to avoid linear birefringence.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
PCT/CN2019/103381 2019-03-19 2019-08-29 光子晶体光纤及其制备方法 WO2020186696A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2019566661A JP7061628B2 (ja) 2019-03-19 2019-08-29 フォトニック結晶ファイバおよびその製造方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910208586.3 2019-03-19
CN201910208586.3A CN109912193A (zh) 2019-03-19 2019-03-19 光子晶体光纤及其制备方法

Publications (1)

Publication Number Publication Date
WO2020186696A1 true WO2020186696A1 (zh) 2020-09-24

Family

ID=66965602

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/103381 WO2020186696A1 (zh) 2019-03-19 2019-08-29 光子晶体光纤及其制备方法

Country Status (3)

Country Link
JP (1) JP7061628B2 (ja)
CN (1) CN109912193A (ja)
WO (1) WO2020186696A1 (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109912193A (zh) * 2019-03-19 2019-06-21 中国电力科学研究院有限公司 光子晶体光纤及其制备方法
CN114740566B (zh) * 2022-03-11 2023-05-02 中国科学院西安光学精密机械研究所 用于太赫兹波高性能成像的聚合物微结构光纤及光纤传像束

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003222739A (ja) * 2002-01-29 2003-08-08 Mitsubishi Cable Ind Ltd 偏波保持フォトニッククリスタルファイバ
CN1605894A (zh) * 2004-11-18 2005-04-13 上海大学 磁光效应光子晶体光纤及其制造方法
CN101052907A (zh) * 2004-07-14 2007-10-10 密执安州立大学董事会 复合波导
CN109912193A (zh) * 2019-03-19 2019-06-21 中国电力科学研究院有限公司 光子晶体光纤及其制备方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003058308A2 (en) * 2002-01-11 2003-07-17 Blaze Photonics Limited Birefringent optical fibres
JP3911220B2 (ja) * 2002-08-28 2007-05-09 正隆 中沢 フォトニッククリスタル光ファイバ及びその製造方法
JP2004102281A (ja) * 2003-09-04 2004-04-02 Mitsubishi Cable Ind Ltd フォトニッククリスタルファイバ及びその製造方法
JP3866725B2 (ja) * 2004-03-03 2007-01-10 正隆 中沢 プラスチックホーリーファイバの製造方法
JP2006126725A (ja) * 2004-11-01 2006-05-18 Sumitomo Electric Ind Ltd 光ファイバ
WO2008053922A1 (fr) * 2006-11-01 2008-05-08 Fujikura Ltd. Fibre à bande interdite photonique
FR2941539B1 (fr) * 2009-01-23 2011-02-25 Draka Comteq France Fibre optique monomode
CN103969737B (zh) * 2013-01-28 2017-04-12 无锡万润光子技术有限公司 非对称双折射涡旋光纤及其制备方法
CN106597601A (zh) * 2015-10-20 2017-04-26 武汉长盈通光电技术有限公司 一种微结构低双折射光纤及其制作方法
US10033148B2 (en) * 2016-02-04 2018-07-24 Lawrence Livermore National Security, Llc Waveguide design for line selection in fiber lasers and amplifiers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003222739A (ja) * 2002-01-29 2003-08-08 Mitsubishi Cable Ind Ltd 偏波保持フォトニッククリスタルファイバ
CN101052907A (zh) * 2004-07-14 2007-10-10 密执安州立大学董事会 复合波导
CN1605894A (zh) * 2004-11-18 2005-04-13 上海大学 磁光效应光子晶体光纤及其制造方法
CN109912193A (zh) * 2019-03-19 2019-06-21 中国电力科学研究院有限公司 光子晶体光纤及其制备方法

Also Published As

Publication number Publication date
JP2021517975A (ja) 2021-07-29
JP7061628B2 (ja) 2022-04-28
CN109912193A (zh) 2019-06-21

Similar Documents

Publication Publication Date Title
JP5916966B2 (ja) 光ファイバ母材の製造方法および光ファイバの製造方法
US8020410B2 (en) Methods for making optical fiber preforms and microstructured optical fibers
US20060191293A1 (en) Furnace and process for drawing radiation resistant optical fiber
US20040033043A1 (en) Dispersion tailoring in optical fibres
WO2020186696A1 (zh) 光子晶体光纤及其制备方法
CA2752812C (en) Method for producing and processing a preform, preform and optical fiber
JP2002543025A5 (ja)
US20150285994A1 (en) Manufacturing method and manufacturing apparatus of optical fiber
CN106597601A (zh) 一种微结构低双折射光纤及其制作方法
WO2008140767A1 (en) Method to produce microstructured optical fibers comprising voids
KR101426158B1 (ko) 광섬유 모재의 제조 장치
WO2003058309A1 (en) A method and apparatus relating to microstructured optical fibres
US20050188728A1 (en) Apparatus and method for manufacturing optical fiber including rotating optical fiber preforms during draw
CN109696723B (zh) 一种双折射光子晶体光纤及其制备方法
JP2004307250A (ja) 光ファイバ及び光ファイバの製造方法
US20220402803A1 (en) Method for manufacturing a preform for a multi-core opitcal fiber and method for manufacturing multi-core optical fibers
CN113121104B (zh) 一种光纤预制棒及制备光纤预制棒和光纤的方法
JP2005343703A (ja) 光ファイバ素線の製造方法、光ファイバ素線
JP5989949B2 (ja) 光ファイバの製造方法
JP4271125B2 (ja) 光ファイバ母材の延伸方法
JP4172440B2 (ja) 光ファイバの製造方法
WO2012111436A1 (ja) 光ファイバの製造方法
KR20070075034A (ko) 광섬유 모재의 제조 방법 및 이를 이용한 저수분 손실광섬유의 제조 방법
WO2024102322A1 (en) Methods of making hollow core optical fibers
JP2003212588A (ja) 光ファイバ素線の製造方法

Legal Events

Date Code Title Description
ENP Entry into the national phase

Ref document number: 2019566661

Country of ref document: JP

Kind code of ref document: A

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19919835

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205 DATED 24/02/2022)

122 Ep: pct application non-entry in european phase

Ref document number: 19919835

Country of ref document: EP

Kind code of ref document: A1