WO2006025144A1 - バンドルファイバ - Google Patents
バンドルファイバ Download PDFInfo
- Publication number
- WO2006025144A1 WO2006025144A1 PCT/JP2005/010970 JP2005010970W WO2006025144A1 WO 2006025144 A1 WO2006025144 A1 WO 2006025144A1 JP 2005010970 W JP2005010970 W JP 2005010970W WO 2006025144 A1 WO2006025144 A1 WO 2006025144A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fiber
- bundle
- bundle fiber
- face
- side end
- 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.)
- Ceased
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
- G02B6/04—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater
- H05B3/22—Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater non-flexible
- H05B3/26—Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D13/00—Electric heating systems
- F24D13/02—Electric heating systems solely using resistance heating, e.g. underfloor heating
- F24D13/022—Electric heating systems solely using resistance heating, e.g. underfloor heating resistances incorporated in construction elements
- F24D13/024—Electric heating systems solely using resistance heating, e.g. underfloor heating resistances incorporated in construction elements in walls, floors, ceilings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2607/00—Walls, panels
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/032—Heaters specially adapted for heating by radiation heating
Definitions
- the present invention relates to a bundle fiber. More specifically, the present invention relates to a bundle fiber formed by bundling a plurality of optical fibers.
- Patent Document 1 describes that a plurality of optical fibers are filled through a quartz sleeve and the ends of the bundle are melted together. It has been proposed to eliminate gaps between individual optical fibers.
- Patent Document 1 Japanese Patent Laid-Open No. 08-304642
- core filling factor the ratio of the core to the waveguide at the incident side end face
- a typical optical fiber used for a bundle fiber has a core diameter of about 200 ⁇ m and a cladding diameter of about 240 m. Described in Patent Document 1 using such an optical fiber When a bundle fiber with this structure is manufactured, its core filling factor is only about 69.4%. As described above, since the coupling rate at the incident-side end face is low, the overall transmission efficiency of the bundle fiber, which is a high-density optical transmission medium, is sufficiently high.
- a bundle fiber in which a plurality of optical fibers are bundled, and a material for forming a core of the optical fiber on the incident side end face of the guided light!
- a bundled fiber characterized in that the ratio of area occupied by it is 90% or more and 100% or less in terms of area ratio.
- the optical fibers are integrated with each other at the incident side end face by melting.
- the incident-side end surfaces are united, and all the light incident on the bundle fiber becomes guided light.
- the bundle fiber can be efficiently coupled.
- the optical fiber in the bundle fiber, is a holey fiber.
- the member forming the incident side end face of the bundle fiber is formed of a single material from the beginning, and the incident side end face of a single material can be formed by simple processing.
- the incident-side end face is formed of a holey fiber in which the holes are collapsed.
- the incident-side end face of the bundle fiber is formed of a waveguide material having no defects, and high-efficiency coupling can be achieved.
- the material of the holey fiber is pure quartz glass.
- the bundle fiber is quartz glass doped with at least one of fluorine and hydroxyl groups.
- each of the optical fibers is made of pure silica glass, or a core that also has a quartz glass power doped with at least one of fluorine and a hydroxyl group, and a cladding that also has a silica glass power doped with fluorine. And have.
- the incident side end face of the bundle fiber can be formed of a material suitable for guided light, and, for example, a bundle fiber with little deterioration against ultraviolet rays or the like is realized.
- each of the optical fibers is partially or entirely removed from each clad on the incident side end face.
- the portion on the incident side end face of the bundle fiber that does not contribute to the waveguide of incident light can be reduced, and highly efficient coupling can be achieved.
- the cladding is removed by chemical etching at each incident side end face of the optical fiber.
- the cladding can be removed without applying physical stress to each optical fiber.
- the properties of the surface to be coated are smooth according to chemical etching, the optical characteristics of the remaining core and clad are not deteriorated.
- the bundle fiber of the present invention can guide more light at the incident side end face by coupling it to the core. This bundle fiber is easy to manufacture and contributes to cost reduction.
- FIG. 1 is a cross-sectional view showing a structure of a single holey fiber 100.
- FIG. 2 is a side view showing an embodiment of a bundle fiber 200 using a holey fiber 100.
- FIG. 3 is a cross-sectional view for explaining processing into a conventional optical fiber 300 used for the bundle fiber 200.
- FIG. 4 is a side view showing the structure of a bundle fiber 400 formed of an optical fiber having a clad 320.
- a conventional optical fiber that is widely used has a solid structure in which a region having a high refractive index called a core is provided at the center of quartz glass or the like.
- the holey fiber 100 is provided with a plurality of holes 112 in the axial direction of the fiber, and the central part of the stone glass part 110 is a high refractive index core part.
- the air layer in the hole 112 is a clad portion having a low refractive index. Since the refractive index difference between air and glass is extremely large, a high numerical aperture can be obtained and more incident light can be guided into the optical fiber.
- FIG. 1 shows a single layer of holes 112 arranged concentrically with the optical fiber itself, the holes 112 may be provided in multiple layers concentrically, and the cross-sectional shape of the holes 112 The arrangement may not be circular.
- a porous glass base material is manufactured by depositing glass fine particles generated by a flame hydrolysis reaction of a glass raw material.
- the obtained porous glass base material is heated at 1100 to 1450 ° C during dehydration treatment or after dehydration treatment as necessary to shrink the porous glass base material to a bulk density suitable for drilling.
- the end face is polished and drilled in the axial direction with a carbide drill, diamond drill, etc., and then dehydrated, purified, and transparentized.
- Holey fiber Examples of 100 materials include pure quartz glass and quartz glass doped with at least one of fluorine and hydroxyl groups.
- a holey fiber can be formed from quartz glass having a single composition doped with at least one of fluorine and a hydroxyl group, which has excellent ultraviolet resistance when transmitting ultraviolet light.
- the force near the end of the holey fiber 100 and the protective coating 120 are removed, and then in an atmosphere gas or a reduced pressure atmosphere.
- the pores 112 are crushed into a solid glass fiber.
- the bundled end portions are further heated and melted to form an integral flange portion 130.
- the gap between the holey fibers 100 is eliminated. Further, the end face of the integral part 130 is formed of a single composition glass.
- “collapse” means filling the gap between the optical fibers and the hole 112 of the holey fiber 100 by melting and crushing the bundled optical fibers (holey fiber 100).
- a carbon heater, an oxyhydrogen flame, or the like can be used as a heating means for forming the integral flange 130. Further, by removing the protective coating 120 in the vicinity of the end portion and heating and melting the bundled holey fiber 100, the collapse of the air holes 112 and the integral flange portion 130 can be simultaneously formed.
- the core filling rate of the bundle fiber can be improved even when the conventional optical fiber 300 is used.
- the protective coating 330 is first removed near the end of the light incident end side, and then part or all of the cladding 320 of the optical fiber 300 is removed. Further, the core 310 is melted and integrated in the vicinity of the end.
- the bundle fiber obtained in this way can increase the core filling factor of the light incident part up to 100%.
- Such a bundle fiber is formed by using a plurality of conventional optical fibers having a core portion and a clad portion, and a bundle fiber having a core filling rate of 90% or more on the incident side end face.
- Aiba One of Aiba.
- a method in which the optical fiber 300 is immersed in a hydrofluoric acid solution and chemically etched is used.
- etching is performed so that the core filling rate at the end face of each optical fiber 300 is 90% or more, preferably 80% or more, and more preferably 100%.
- the core is made of pure silica glass or quartz glass doped with at least one of fluorine and a hydroxyl group, and the glass is doped with fluorine. Is preferable.
- FIG. 4 is a side view schematically showing the structure of the bundle fiber 400 formed by the optical fiber 300 having the clad 320.
- the optical fiber forming the bundle fiber 400 has the clad 320 removed in the vicinity of the incident end as shown in FIG. Therefore, the incident end of the bundle fiber 400 is formed as an aggregate portion 430 in which the cores 310 of the optical fiber 300 are densely aggregated.
- Such a bundle fiber is also one of bundle fibers formed by using a plurality of conventional optical fibers having a core part and a clad part, and having a core filling rate of 90% or more on the incident side end face.
- a bundle fiber having a high core filling factor on the incident side end face can be obtained easily and at low cost.
- a bundle fiber with a high core filling factor can guide much of the incident light, so high V and transmission efficiency can be obtained.
- a bundle fiber is produced using an optical fiber made of a quartz material, it can be suitably used for transmitting ultraviolet rays.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (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 |
|---|---|---|---|
| JP2004256031A JP2006072025A (ja) | 2004-09-02 | 2004-09-02 | バンドルファイバ |
| JP2004-256031 | 2004-09-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006025144A1 true WO2006025144A1 (ja) | 2006-03-09 |
Family
ID=35999809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/010970 Ceased WO2006025144A1 (ja) | 2004-09-02 | 2005-06-15 | バンドルファイバ |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2006072025A (ja) |
| KR (1) | KR20060043019A (ja) |
| TW (1) | TW200613229A (ja) |
| WO (1) | WO2006025144A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011027994A (ja) * | 2009-07-24 | 2011-02-10 | Mitsubishi Cable Ind Ltd | モード結合用光ファイバ及びその製造方法 |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200907442A (en) | 2007-03-22 | 2009-02-16 | Fujikura Co Ltd | Optical fiber bundle and light irradiating device |
| JP2010072485A (ja) * | 2008-09-19 | 2010-04-02 | Fujikura Ltd | 光ファイババンドルおよび光照射装置 |
| JP5555134B2 (ja) * | 2010-10-26 | 2014-07-23 | 湖北工業株式会社 | 光ファイバ |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5055345A (ja) * | 1973-06-14 | 1975-05-15 | ||
| JPS55121409A (en) * | 1979-03-13 | 1980-09-18 | Showa Electric Wire & Cable Co Ltd | Production of bundled fiber end part |
| JPS5797504A (en) * | 1980-12-10 | 1982-06-17 | Furukawa Electric Co Ltd:The | Forming method for end part of light guide |
| JPS57144510A (en) * | 1981-03-03 | 1982-09-07 | Takashi Mori | Structure of end face of optical conductor |
| JPS6138604U (ja) * | 1984-08-10 | 1986-03-11 | 日本電子株式会社 | ライトガイド |
| JPS63136004A (ja) * | 1986-11-28 | 1988-06-08 | Furukawa Electric Co Ltd:The | マルチ光フアイバの端末部 |
| JPH04245203A (ja) * | 1991-01-30 | 1992-09-01 | Asahi Glass Co Ltd | ライトガイド |
| JP2002243972A (ja) * | 2001-02-19 | 2002-08-28 | Mitsubishi Cable Ind Ltd | フォトニッククリスタルファイバの接続方法及びその接続構造体並びにフォトニッククリスタルファイバ |
| JP2002531867A (ja) * | 1998-12-02 | 2002-09-24 | スリーエム イノベイティブ プロパティズ カンパニー | 照明装置およびその製造方法 |
| JP2002333531A (ja) * | 2001-05-07 | 2002-11-22 | Mitsubishi Cable Ind Ltd | 大口径ファイバ |
-
2004
- 2004-09-02 JP JP2004256031A patent/JP2006072025A/ja active Pending
-
2005
- 2005-02-21 KR KR1020050014012A patent/KR20060043019A/ko not_active Ceased
- 2005-06-15 WO PCT/JP2005/010970 patent/WO2006025144A1/ja not_active Ceased
- 2005-08-30 TW TW094129767A patent/TW200613229A/zh unknown
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5055345A (ja) * | 1973-06-14 | 1975-05-15 | ||
| JPS55121409A (en) * | 1979-03-13 | 1980-09-18 | Showa Electric Wire & Cable Co Ltd | Production of bundled fiber end part |
| JPS5797504A (en) * | 1980-12-10 | 1982-06-17 | Furukawa Electric Co Ltd:The | Forming method for end part of light guide |
| JPS57144510A (en) * | 1981-03-03 | 1982-09-07 | Takashi Mori | Structure of end face of optical conductor |
| JPS6138604U (ja) * | 1984-08-10 | 1986-03-11 | 日本電子株式会社 | ライトガイド |
| JPS63136004A (ja) * | 1986-11-28 | 1988-06-08 | Furukawa Electric Co Ltd:The | マルチ光フアイバの端末部 |
| JPH04245203A (ja) * | 1991-01-30 | 1992-09-01 | Asahi Glass Co Ltd | ライトガイド |
| JP2002531867A (ja) * | 1998-12-02 | 2002-09-24 | スリーエム イノベイティブ プロパティズ カンパニー | 照明装置およびその製造方法 |
| JP2002243972A (ja) * | 2001-02-19 | 2002-08-28 | Mitsubishi Cable Ind Ltd | フォトニッククリスタルファイバの接続方法及びその接続構造体並びにフォトニッククリスタルファイバ |
| JP2002333531A (ja) * | 2001-05-07 | 2002-11-22 | Mitsubishi Cable Ind Ltd | 大口径ファイバ |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011027994A (ja) * | 2009-07-24 | 2011-02-10 | Mitsubishi Cable Ind Ltd | モード結合用光ファイバ及びその製造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| TW200613229A (en) | 2006-05-01 |
| KR20060043019A (ko) | 2006-05-15 |
| JP2006072025A (ja) | 2006-03-16 |
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