WO2003102651A1 - Fibre de cristal photonique, son procede de fabrication et son procede de connexion - Google Patents
Fibre de cristal photonique, son procede de fabrication et son procede de connexion Download PDFInfo
- Publication number
- WO2003102651A1 WO2003102651A1 PCT/JP2003/006904 JP0306904W WO03102651A1 WO 2003102651 A1 WO2003102651 A1 WO 2003102651A1 JP 0306904 W JP0306904 W JP 0306904W WO 03102651 A1 WO03102651 A1 WO 03102651A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fiber
- photonic crystal
- core
- pores
- face
- Prior art date
Links
Classifications
-
- 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
- G02B6/02314—Plurality of longitudinal structures extending along optical fibre axis, e.g. holes
- G02B6/02342—Plurality of longitudinal structures extending along optical fibre axis, e.g. holes characterised by cladding features, i.e. light confining region
- G02B6/02347—Longitudinal structures arranged to form a regular periodic lattice, e.g. triangular, square, honeycomb unit cell repeated throughout cladding
-
- 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
- G02B6/02314—Plurality of longitudinal structures extending along optical fibre axis, e.g. holes
- G02B6/02342—Plurality of longitudinal structures extending along optical fibre axis, e.g. holes characterised by cladding features, i.e. light confining region
- G02B6/02361—Longitudinal structures forming multiple layers around the core, e.g. arranged in multiple rings with each ring having longitudinal elements at substantially the same radial distance from the core, having rotational symmetry about the fibre axis
-
- 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
- G02B6/24—Coupling light guides
- G02B6/255—Splicing of light guides, e.g. by fusion or bonding
-
- 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
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
-
- 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
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/381—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
Definitions
- the present invention relates to a photonic crystal fiber having a fiber body comprising: a core; a cladding (porous portion) provided so as to surround the core; and having a plurality of pores extending along the core; And a fiber connection method.
- Some photonic crystal fibers include a core formed solidly at the center of the fiber, and a cladding provided around the core and having a plurality of pores extending along the core.
- Such a photonic crystal fiber transmits light while confining the light in a core surrounded by a clad.However, the wavelength dispersion of light can be freely controlled by changing the size and spacing of pores.
- communication in a new wavelength range that could not be achieved with conventional optical fibers is now possible, and higher speed communication and lower costs are expected.
- the fiber end face of the photonic crystal fiber When connecting the photonic crystal fiber to the connector, the fiber end face of the photonic crystal fiber is connected to the fiber end face of the optical fiber to be connected.
- the end faces of the fibers are brought into contact with each other, if an air layer is formed between the end face of one fiber and the end face of the other fiber, light will be reflected at the boundary between the core and the air layer, or There is a disadvantage that part of the light will be lost. Therefore, the fiber end faces are polished so that there is no gap between the two fiber end faces.
- abrasives and polishing debris enter these pores during polishing, which deteriorate the optical characteristics and become finer later. There is a problem in that it comes out of the hole and adheres to the core, thereby causing obstacles such as hindering light propagation.
- the gap between the pores is very narrow, about 1 O ⁇ m or less, there is a problem that the cladding is cracked or broken by vibration or impact during polishing.
- a photonic crystal fiber according to the present invention has a fiber body comprising: a core; and a cladding provided surrounding the core and having a plurality of pores extending along the core.
- the end face of the fiber is polished after the opening of the pore of the cladding in the portion is closed with a closing material having a lower refractive index than the core.
- the openings of the pores are closed in advance with the closing material, so that when polishing the end face, abrasives and polishing debris enter the pores. Therefore, it is possible to prevent the polishing agent and polishing debris entering the pores from deteriorating the optical characteristics, and prevent the polishing agent and polishing debris coming out of the pores from adhering to the core and hindering the propagation of light. it can.
- the refractive index of the plugging material used here is lower than the refractive index of the core, light propagates in the core without leaking outside at the boundary between the core and the clad.
- the plugging material that blocks the opening reduces the vibration and impact during polishing, it is possible to prevent a crack from entering or breaking between the pores in the cladding on the fiber end face. Further, since the opening of the pore is closed with the closing material by the above-mentioned method, entry of moisture or the like which causes light transmission loss is prevented.
- the hardness of the plugging material may be lower than the hardness of the fiber main body.
- the plugging material is harder to be polished than the fiber main body during polishing, and the fiber main body is more exposed than the fiber main body. As a result, the plugging material moves out of the fiber end face. In some cases, they remain in a protruding form, which may hinder connection with other optical fibers.
- the plugging material having a lower hardness than that of the fiber body, the plugging material easily penetrates into the pores during the polishing and is easily cut, so that the plugging material projects outward from the fiber end face. Remaining can be suppressed.
- the plugging material may be cut into the pores by polishing the end face of the fiber. According to the above configuration, since the plugging material is cut into the pores by grinding the fiber end face, it can be connected to other optical fibers without any trouble.
- the plurality of pores of the clad may form a triangular lattice on the cross section of the fiber.
- the photonic crystal fiber of the present invention may be one in which the plurality of pores of the cladding are arranged so as to form a plurality of layers concentrically around the core on the cross-section of the fiber.
- a method for manufacturing a photonic crystal fiber according to the present invention is directed to a photonic crystal fiber having a fiber body including a core, and a cladding provided surrounding the core and having a plurality of pores extending along the core.
- the end face of the fino is polished.
- the opening of the pore is closed in advance with a plugging material. It is possible to prevent the polishing agent or polishing debris entering the holes from deteriorating the optical characteristics, or prevent the polishing agent or polishing debris coming out of the holes from adhering to the core and hindering the propagation of light.
- the plugging material used here has a lower refractive index than the core, the light is not lost from the core to the outside, and does not affect the optical characteristics of the fiber.
- the closing material that closes the opening reduces the vibration and shock during polishing, so that cracks can be prevented from entering or breaking between the pores in the fiber end face clad.
- the obstruction blocks the opening of the pore by the above method, it is possible to prevent moisture and the like from entering the pore.
- a fiber connection method for a photonic crystal fin having a fiber body including a core, a cladding provided surrounding the core, and having a plurality of pores extending along the core. How to connect to Fino
- the fiber end face is polished after being closed with a closing material having a lower refractive index and a lower hardness than the fiber body, and the polished fiber end face is brought into contact with the fiber end face of the optical fiber to be connected.
- the fiber end face of the photonic crystal fiber and the fiber end face of the optical fiber to be connected can be brought into contact with each other without any obstacle, and as a result, without loss of light. It can be confined in the core and transmitted.
- the openings of the pores are closed in advance with the closing material, so that no abrasive or polishing debris enters the pores when polishing the fiber end face.
- the plugging material used here has a lower refractive index than the core, the light is not lost from the core to the outside, and does not affect the optical characteristics of the fiber.
- the closing material that closes the opening reduces vibration and impact during polishing, it is possible to prevent the fiber from being damaged.
- the obstruction closes the opening of the pore by the above-described method, it is possible to prevent water or the like from entering the pore, which causes a loss of light transmission, to enter the pore.
- the plugging material is harder than the fiber body, the end of the fiber will be shaved more than the plugging material during polishing, and as a result, the plugging material will protrude outward from the fiber end surface. In some cases, the protruding plugging material may hinder the contact between the fiber end face of the photonic crystal fiber and the fiber end face of the optical fiber to be connected. However, if the hardness of the plugging material is lower than that of the fiber body, the plugging material will penetrate into the pores from the end during polishing, and it will be easier to cut, so the fiber end face of the photonic crystal fiber and the optical fiber to be connected The end face of the fiber can be easily brought into contact with the fiber end face, and light loss can be prevented. BRIEF DESCRIPTION OF THE FIGURES
- FIG. 1 is a perspective view of the photonic crystal fiber of the first embodiment.
- FIG. 2A to 2D are cross-sectional views taken along the line II-II of FIG. 1 in the process of manufacturing the photonic crystal fiber.
- FIG. 3 is a cross-sectional view taken along the line II-II of FIG. 1 corresponding to a case where pores are closed with an occlusion material having a hardness lower than that of the fiber main body and then the fiber end surface is polished.
- FIG. 4 is a cross-sectional view taken along the line II-II of FIG. 1 corresponding to a case where the pores are closed with a plugging material having a higher hardness than the fiber body and the fiber end face is subsequently polished.
- FIG. 5 is a diagram showing a first connection structure between a photonic crystal fiber and a connected optical fiber.
- FIG. 6 is a diagram showing a second connection structure between the photonic crystal fiber and the optical fiber to be connected.
- FIG. 1 shows a fiber end of a photonic crystal fiber 1 according to an embodiment of the present invention.
- This photonic crystal fiber 1 is formed of quartz, plastic, or the like, and is provided with a core 2 forming the center of the fiber, a clad 3 surrounding the core 2, and a cladding 3 surrounding the core 2. And a covering portion 4.
- the core 2 is formed solid, and may be doped with a functional material such as germanium (Ge).
- the optical signal is transmitted along the core 2 along the longitudinal direction.
- the clad 3 constitutes a porous portion in which a plurality of pores 3a extending along the core 2 are formed.
- the plurality of pores 3a are arranged so as to form a triangular lattice in the cross section of the fiber and to form a plurality of layers concentrically with the core 2 as a center, thereby forming the photonic crystal in the fiber radial direction. Forming the structure.
- the optical signal is confined in the core 2 by the cladding 3.
- Such a photonic crystal fiber 1 is manufactured as follows.
- a preform is prepared in which a cylindrical support tube is filled with a plurality of cavities and one core material. At this time, the core material is arranged at the center axis position.
- the preform is set in a drawing machine, which is heated to a high temperature and stretched at a high speed to reduce the diameter (to form a fiber).
- the photonic crystal fiber manufactured in this way was used as shown in Fig. 2A.
- the end face of the fiber has irregularities.
- the pores 3 a of the clad 3 are closed with a plugging material 5 having a lower refractive index than the core 2 and a lower hardness than the fiber body.
- a plugging material 5 having a lower refractive index than the core 2 and a lower hardness than the fiber body.
- the refractive index of pure quartz is 1.452, so that a material having a lower refractive index than the closing material 5 is used.
- the core 2 is made of pure quartz, the hardness of the pure quartz is 790 kg / mm 2 according to the Beakers test method. Therefore, a material having a lower hardness than the sealing material 5 is used.
- the fiber end face of the photonic crystal fiber is polished using a polishing machine or the like, and
- the fiber end face is formed perpendicular to the fiber axis.
- the coating 4 at the fiber end is polished by a polishing machine to form a taper so that the coating 4 does not become an obstacle at the fiber end.
- the photonic crystal fiber 1 manufactured by the above method has a fiber end face of the photonic crystal fiber 1 and a fiber end face of the optical fiber 7 to be connected. Connection is made by mating in connector 6 so that no obstacles or air layers enter between them.
- the opening of the pore 3 a is closed with the closing material 5 in advance.
- the plugging material 5 that closes the opening of the pore 3a has a lower refractive index than the core 2, light can be confined in the core 2 and transmitted, and the step of actually using the photonic crystal fiber 1 is performed. Does not affect the optical characteristics.
- the plugging material 5 is harder than the fiber body, the fiber end face will be shaved more than the plugging material 5 during polishing as shown in Fig. 4, so that the photonic crystal fiber 1 and the connected optical fiber 7
- the plugging material 5 projects from the fiber end face, and this may cause an obstacle, which may prevent the fiber end face of the photonic crystal fiber 1 from contacting the fiber end face of the optical fiber 7 to be connected.
- the plugging material 5 cuts into the pores 3a as shown in Fig. 3, and the fiber end face is perpendicular to the axial direction. So you can make a photonic crystal
- the fiber end face of the eyebar 1 and the fiber end face of the optical fiber 7 to be connected can be connected so that an obstacle or an air layer does not enter between them.
- connection method can prevent light from leaking out.
- the blocking material 5 reduces the vibration and impact generated by the polishing, damage such as cracking or breaking of the clad can be prevented.
- the photonic crystal fiber according to the present invention can be suitably used for optical communication and the like.
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03730745A EP1510841A4 (en) | 2002-05-31 | 2003-06-02 | PHOTONIC CRYSTAL FIBER, MANUFACTURING METHOD THEREFOR, AND METHOD FOR CONNECTING THE SAME |
AU2003241718A AU2003241718A1 (en) | 2002-05-31 | 2003-06-02 | Photonic crystal fiber, method of manufacturing the crystal fiber, and method of connecting the fiber |
US10/512,641 US20060062533A1 (en) | 2002-05-31 | 2003-06-02 | Photonic crystal fiber, method of manufacturing the crystal fiber, and method of connecting the fiber |
CA002487820A CA2487820A1 (en) | 2002-05-31 | 2003-06-02 | Photonic crystal fiber, method of manufacturing the crystal fiber, and method of connecting the fiber |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002160012A JP2004004320A (ja) | 2002-05-31 | 2002-05-31 | フォトニック結晶ファイバ及びその製造方法並びにフォトニック結晶ファイバの接続方法 |
JP2002-160012 | 2002-05-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003102651A1 true WO2003102651A1 (fr) | 2003-12-11 |
Family
ID=29706531
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/006904 WO2003102651A1 (fr) | 2002-05-31 | 2003-06-02 | Fibre de cristal photonique, son procede de fabrication et son procede de connexion |
Country Status (6)
Country | Link |
---|---|
US (1) | US20060062533A1 (ja) |
EP (1) | EP1510841A4 (ja) |
JP (1) | JP2004004320A (ja) |
AU (1) | AU2003241718A1 (ja) |
CA (1) | CA2487820A1 (ja) |
WO (1) | WO2003102651A1 (ja) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3982515B2 (ja) | 2004-04-21 | 2007-09-26 | 住友電気工業株式会社 | 光結合構造 |
US7477821B2 (en) | 2004-10-25 | 2009-01-13 | Nagase Chemtex Corporation | Sealing composition and production method of optical fiber having air holes in the inside using the composition |
JP2008287191A (ja) * | 2007-05-21 | 2008-11-27 | Hitachi Cable Ltd | 光ファイバ、光ファイバの端面封止方法、光ファイバの接続構造及び光コネクタ |
JP4877067B2 (ja) * | 2007-05-22 | 2012-02-15 | 日立電線株式会社 | 光ファイバ、光ファイバの接続構造および光コネクタ |
JP5117131B2 (ja) * | 2007-07-19 | 2013-01-09 | 古河電気工業株式会社 | ホーリーファイバおよびホーリーファイバの製造方法 |
US7845860B2 (en) * | 2008-01-10 | 2010-12-07 | Hewlett-Packard Development Company, L.P. | Method for connecting multicore fibers to optical devices |
JP5155987B2 (ja) | 2009-11-09 | 2013-03-06 | 日立電線株式会社 | 光ファイバの端部加工方法および光ファイバの端部加工装置 |
JP5318834B2 (ja) | 2010-09-29 | 2013-10-16 | 日立電線株式会社 | 光ファイバ端部加工方法および光ファイバ端部加工装置 |
JP5416721B2 (ja) | 2011-01-05 | 2014-02-12 | 日立金属株式会社 | 光ファイバ端部加工方法および光ファイバ端部加工装置 |
US10101209B2 (en) | 2012-04-30 | 2018-10-16 | Finesse Solutions, Inc. | Method and apparatus for quantifying solutions comprised of multiple analytes |
CN112362104B (zh) * | 2020-11-11 | 2022-07-22 | 重庆邮电大学 | 一种基于光子带隙的侧抛光纤-微结构光纤流体传感系统 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5802236A (en) * | 1997-02-14 | 1998-09-01 | Lucent Technologies Inc. | Article comprising a micro-structured optical fiber, and method of making such fiber |
JP2002236234A (ja) * | 2001-02-07 | 2002-08-23 | Sumitomo Electric Ind Ltd | 光ファイバの接続構造および光ファイバの接続方法 |
JP2002323625A (ja) * | 2001-04-25 | 2002-11-08 | Sumitomo Electric Ind Ltd | 光ファイバの端面部構造および光ファイバ |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2542587A1 (de) * | 1975-09-24 | 1977-04-07 | Siemens Ag | Einmaterialfaser |
GB9929345D0 (en) * | 1999-12-10 | 2000-02-02 | Univ Bath | Improvements in and related to photonic-crystal fibres and photonic-crystal fibe devices |
US20030068150A1 (en) * | 2001-10-10 | 2003-04-10 | Rayteq Photonic Solutions Ltd. | Termination of end-faces of air-clad and photonic-crystal fibers |
-
2002
- 2002-05-31 JP JP2002160012A patent/JP2004004320A/ja active Pending
-
2003
- 2003-06-02 US US10/512,641 patent/US20060062533A1/en not_active Abandoned
- 2003-06-02 CA CA002487820A patent/CA2487820A1/en not_active Abandoned
- 2003-06-02 EP EP03730745A patent/EP1510841A4/en not_active Withdrawn
- 2003-06-02 WO PCT/JP2003/006904 patent/WO2003102651A1/ja not_active Application Discontinuation
- 2003-06-02 AU AU2003241718A patent/AU2003241718A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5802236A (en) * | 1997-02-14 | 1998-09-01 | Lucent Technologies Inc. | Article comprising a micro-structured optical fiber, and method of making such fiber |
JP2002236234A (ja) * | 2001-02-07 | 2002-08-23 | Sumitomo Electric Ind Ltd | 光ファイバの接続構造および光ファイバの接続方法 |
JP2002323625A (ja) * | 2001-04-25 | 2002-11-08 | Sumitomo Electric Ind Ltd | 光ファイバの端面部構造および光ファイバ |
Also Published As
Publication number | Publication date |
---|---|
EP1510841A1 (en) | 2005-03-02 |
EP1510841A4 (en) | 2005-06-15 |
US20060062533A1 (en) | 2006-03-23 |
AU2003241718A1 (en) | 2003-12-19 |
CA2487820A1 (en) | 2003-12-11 |
JP2004004320A (ja) | 2004-01-08 |
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