WO2011087075A1 - Appareil pour couper une fibre optique - Google Patents

Appareil pour couper une fibre optique Download PDF

Info

Publication number
WO2011087075A1
WO2011087075A1 PCT/JP2011/050505 JP2011050505W WO2011087075A1 WO 2011087075 A1 WO2011087075 A1 WO 2011087075A1 JP 2011050505 W JP2011050505 W JP 2011050505W WO 2011087075 A1 WO2011087075 A1 WO 2011087075A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical fiber
blade
cutting
degrees
lever
Prior art date
Application number
PCT/JP2011/050505
Other languages
English (en)
Japanese (ja)
Inventor
誠 岩松
雅史 石原
武司 佐藤
学 田端
Original Assignee
株式会社フジクラ
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 株式会社フジクラ filed Critical 株式会社フジクラ
Publication of WO2011087075A1 publication Critical patent/WO2011087075A1/fr

Links

Images

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
    • G02B6/24—Coupling light guides
    • G02B6/25—Preparing the ends of light guides for coupling, e.g. cutting

Definitions

  • the present invention relates to an optical fiber cutting device for cutting an optical fiber.
  • the optical fiber It is necessary to cut the optical fiber in order to adjust the length of the optical fiber or to connect the optical fibers. Since the optical fiber is made of a brittle material such as glass, it can be easily cut by scratching with a blade and applying a slight tension. In order to suppress light scattering loss due to the cut surface, a cut surface that is as flat as possible is necessary. However, a relatively good cut surface can be obtained by such a simple method.
  • Japanese Patent Application Publication Nos. 2005-173183 and 2000-56140 disclose related technologies related to an optical fiber cutting device.
  • An object of the present invention is to provide an apparatus for cutting an optical fiber that can ensure a long life while being able to form a good cut surface.
  • an apparatus for cutting an optical fiber includes a support for supporting the optical fiber, and a cutting edge angle of not less than 75 degrees and not more than 105 degrees, and is made of single crystal diamond. A blade.
  • FIG. 1A is a schematic diagram for explaining a process of cutting an optical fiber by the apparatus according to the first embodiment of the present invention, and shows a stage before pressing the optical fiber against a blade.
  • FIG. 1B is a schematic diagram illustrating a process of cutting an optical fiber, and shows a step of pressing the optical fiber against a blade.
  • FIG. 2 is a schematic view showing an enlarged relationship between the blade and the optical fiber in the apparatus.
  • FIG. 3 is a perspective view showing the overall appearance of the apparatus.
  • FIG. 4 is a perspective view showing a state in which an optical fiber is placed on the support of the apparatus.
  • FIG. 5 is a perspective view showing a state in which the optical fiber is pressed against the blade by tilting the lever.
  • FIG. 1A is a schematic diagram for explaining a process of cutting an optical fiber by the apparatus according to the first embodiment of the present invention, and shows a stage before pressing the optical fiber against a blade.
  • FIG. 1B is a schematic diagram illustrating a process of cutting
  • FIG. 6 is a graph showing the experimental results of examining the influence of the edge angle on the blade life (number of cuttings).
  • FIG. 7 is a graph showing experimental results of examining the influence of the edge angle on the angle of the cut surface.
  • FIG. 8A is a schematic diagram for explaining a process of cutting an optical fiber according to the second embodiment of the present invention, and shows a stage before the optical fiber is pressed against a blade.
  • FIG. 8B is a schematic diagram illustrating a process of cutting an optical fiber according to the second embodiment of the present invention, and shows a step of pressing the optical fiber against a blade.
  • FIGS. 1A-8B An exemplary embodiment of the present invention is described below with reference to FIGS. 1A-8B.
  • the operation of the optical fiber cutting device 10 can be roughly described as follows with reference to FIGS. 1A, 1B, and 2.
  • the optical fiber 1 is supported by an appropriate holder 2, and more preferably by a pair of supports 6 and 7. Between the support bodies 6 and 7, the blade 5 and the pressing member 8 facing the blade 5 are positioned.
  • the blade 5 is fixed to the base 4, and the base 4 is preferably supported by the spring 3, so that the blade 5 and the base 4 can move elastically perpendicular to the direction in which the optical fiber 1 travels. Yes.
  • FIG. 1B for example, the optical fiber 1 is pressed against the blade 5 by slightly moving the pressing member 8 toward the blade 5. At this time, the optical fiber 1 is scratched and slightly tensioned, so that the optical fiber 1 is cut.
  • the holder 2 normally supports the optical fiber 1 in the jacket portion 1G.
  • a pair of clamps 6A and 6B and a pair of clamps 7A and 7B may be applied to the supports 6 and 7, respectively, so that the optical fiber 1 can be gripped.
  • the blade 5 is preferably fixed by being embedded in the table 4.
  • the cutting edge 5 ⁇ / b> A of the blade 5 protrudes upward from the table 4.
  • a groove 18 is preferably formed in a portion of the pressing member 8 that faces the cutting edge 5A. The groove 18 prevents the cutting edge 5A from directly interfering with the pressing member 8, and prevents an excessive stress in the width direction from being applied to the optical fiber 1.
  • the optical fiber cutting device 10 includes a mechanism 11 for pressing the optical fiber 1 against the blade 5.
  • the mechanism 11 includes a base 13, a shaft 14, and a lever 15.
  • the lever 15 is rotatable with respect to the base 13 about the shaft 14.
  • the base 13 includes lower clamps 6 ⁇ / b> A and 7 ⁇ / b> A that are fixed to the base 13 at intervals and a base 4 that includes the blade 5.
  • the base 4 is positioned between the lower clamps 6A and 7A.
  • the lever 15 is positioned so as to face the lower clamps 6A, 7A, and the upper clamps 6B, 7B fixed to the lever 15 so as to rotate together, and the pressing member 8 positioned so as to face the blade 5.
  • the pressing member 8 may be directly fixed to the lever 15 or may be attached to the lever 15 via an appropriate elastic member.
  • the base 13 includes a holder mounting portion 16 adjacent to the lower clamp 6A.
  • the holder mounting portion 16 has a recess suitable for fitting the holder 2, and preferably includes a tap for pressing the holder 2 from above so that the holder 2 can be temporarily fixed.
  • a guide groove is preferably provided to guide the optical fiber 1.
  • a guide groove may be further provided on the holder mounting portion 16 or close to the lower clamp 6A.
  • the blade 5 is made of an appropriate hard material and is fixed to the table 4.
  • An example of such a hard material is diamond, but if possible, an appropriate hard material such as ruby, sapphire, or cemented carbide may be applied instead of diamond.
  • Sintered particles (polycrystals) of these materials may be used, but single crystals are advantageous from the viewpoint of blade stability.
  • the cutting edge 5A is sharpened to scratch the optical fiber 1.
  • the cutting edge 5A of the blade 5 is given an appropriate cutting edge angle ⁇ as shown in FIG. Although the reason will be described later, the cutting edge angle ⁇ is preferably 75 degrees or more and 105 degrees or less.
  • the upper surface 4a of the base 4 includes a groove 17 having a shape suitable for the blade 5 to be fitted.
  • the blade 5 is fitted into the groove 17 by being press-fitted into the groove 17, and is fixed to the table 4. From the viewpoint of ensuring a more secure fixation, an adhesive is preferably further applied.
  • the blade 5 protrudes upward from the upper surface 4a in a state where the blade 5 is fitted in the groove 17.
  • the base 4 is provided with a protrusion 9 so as to overhang the groove 17.
  • the protrusion 9 protrudes so as to cover the skirts of the inclined surfaces 5A1 and 5A2 on both sides of the blade edge 5A.
  • the base 4 together with the protrusions 9 is preferably suitably hard, but made of a material having a lower hardness than the bare fiber of the optical fiber 1. Examples of such materials include metals such as stainless steel and resins such as polyacetal (POM).
  • POM polyacetal
  • the base 4 made of such a material prevents the end portions 1a and 1b of the optical fiber 1 from being damaged.
  • the protruding height H from the upper surface 4a to the upper end of the cutting edge 5A and the width W from the center of the cutting edge 5A to the root of the protruding portion are both about 0.1 mm.
  • the stand 4 is supported by a spring 3 as shown in FIGS. 1A and 1B. This is advantageous in preventing an excessive load from being applied to the optical fiber 1.
  • the lever 15 is attached to the base 13 via the shaft 14 and is rotatable with respect to the base 13 about the shaft 14.
  • the lever 15 is shaped to be easily pushed down by the operator's hand.
  • the shaft 14 is provided with a return spring that urges the lever 15 in the direction of pushing it up. As a result, the lever 15 is automatically returned to the original position when the lever 15 is released after being pushed down by the hand.
  • the lever 15 includes a pressing member 8 positioned so as to face the blade 5. When the lever 15 is pushed down, the pressing member 8 is brought closer to the blade 5 along with the lever 15.
  • the lever 15 is provided with an arm for supporting the upper clamps 6B and 7B, although it is hidden and cannot be seen in FIG.
  • the arm is preferably attached to the lever 15 so as to be able to rotate, swing or bend, and an elastic member such as a spring is interposed between the lever 15 and the arm.
  • an elastic member such as a spring is interposed between the lever 15 and the arm.
  • the lever 15 is preferably provided with a stopper for restricting the rotation, swinging or bending of the arm so that the arm is positioned.
  • a stopper for restricting the rotation, swinging or bending of the arm so that the arm is positioned.
  • the upper clamp 6B comes in contact with the lower clamp 6A before the upper clamp 7B.
  • the process of cutting the optical fiber 1 by the optical fiber cutting device 10 is as follows.
  • the optical fiber 1 is fixed to the holder 2, and the holder 2 is mounted on the holder mounting portion 16.
  • the optical fiber 1 is appropriately positioned and placed on the lower clamps 6A and 7A.
  • the cutting edge 5 ⁇ / b> A is at a slightly lower position so as not to contact the optical fiber 1.
  • the lever 15 is initially open, but is closed as shown in FIG. 5 by being pushed down by hand.
  • the clamp 6 on the side close to the holder mounting portion 16 grips the optical fiber 1 prior to the clamp 7, and then the clamp 7 grips the optical fiber 1.
  • FIG. 1A shows this state.
  • the lever 15 is further pushed down. Then, the pressing member 8 pushes the optical fiber 1 in the direction of the blade 5 and presses it against the blade edge 5A, whereby the optical fiber 1 is damaged.
  • the optical fiber 1 is pressed by the pressing member 8 to be tensioned, and the optical fiber 1 is broken as shown in FIG.
  • the end 1a and the end 1b of the optical fiber 1 after cutting do not come into contact with the cutting edge 5A again, and are received by the table 4 on the protrusion 9 as shown in FIG.
  • the optical fiber can be cut only by placing the optical fiber on the apparatus and pushing down the lever. That is, the operation is extremely simple and does not require high skill from the operator.
  • the blade edge angle ⁇ is preferably relatively small, for example, it was considered that a range of 30 degrees or less is preferable.
  • Blades having blade edge angles ⁇ of 60 degrees, 75 degrees, 90 degrees, 105 degrees, and 120 degrees were prepared and attached to the optical fiber cutting device 10 described above, and an experiment for cutting an optical fiber was performed.
  • the quality of the cut surface was also examined.
  • the cut surface after cutting was examined, and the angle formed by the cut surface (hereinafter referred to as the cutting angle) was measured with respect to the direction orthogonal to the traveling direction of the optical fiber, and the result shown in FIG. 7 was obtained.
  • the results are shown in FIG.
  • the cutting angle varies, so the maximum value (indicated by x in the figure), minimum value (also-), and average value (also ⁇ ) are measured. Has been.
  • the cutting angle is ideally 0 degree, and it is expected that the scattering loss is minimized at this time. Practically, the cutting angle is managed to be 1 degree or less, for example. As understood from FIG. 7, when the blade angle ⁇ is 120 degrees, the maximum cutting angle exceeds 1 degree. However, if the cutting edge angle ⁇ is 105 degrees or less, the cutting angle is less than 1 degree, that is, a sufficiently good cutting surface is obtained.
  • the blade edge angle ⁇ is preferably 75 degrees or more, and from the viewpoint of obtaining a good cut surface, the blade edge angle ⁇ is preferably 105 degrees or less. More preferably, the cutting edge angle ⁇ is about 90 degrees.
  • the optical fiber is pushed in the direction of the blade, but may be deformed so as to push the blade in the direction of the optical fiber.
  • 8A and 8B are diagrams schematically illustrating the second embodiment modified in such a manner.
  • the length of the spring 3 is appropriately adjusted in advance so that the blade 5 comes into contact with the optical fiber 1 supported by the clamps 6 and 7.
  • a means for locking the table 4 is provided, the table 4 is locked so that the blade 5 does not contact the optical fiber 1 as shown in FIG. 8A, and the spring 3 is compressed.
  • the locking means is released, and the blade 5 is pushed up toward the optical fiber 1 by the biasing force of the spring 3.
  • FIG. 8B the blade 5 is pressed against the optical fiber 1 to perform cutting.
  • a slight tension may be applied to the clamps 6 and 7 in directions away from each other. Such tension promotes cutting of the optical fiber 1.
  • the blade edge angle ⁇ is preferably 75 degrees or more from the viewpoint of extending the blade life, and the blade edge angle ⁇ is preferably 105 degrees or less from the viewpoint of obtaining a good cut surface. More preferably, the cutting edge angle ⁇ is about 90 degrees.
  • An apparatus for cutting an optical fiber capable of ensuring a long life while being able to form a good cut surface is provided.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

L'invention porte sur un appareil pour couper une fibre optique, lequel appareil comporte : un corps de support qui supporte la fibre optique ; et une lame, qui a un angle de bord de lame de 75 à 105 degrés, et qui est constituée par un diamant monocristallin.
PCT/JP2011/050505 2010-01-14 2011-01-14 Appareil pour couper une fibre optique WO2011087075A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010-005960 2010-01-14
JP2010005960A JP2011145478A (ja) 2010-01-14 2010-01-14 光ファイバ切断装置

Publications (1)

Publication Number Publication Date
WO2011087075A1 true WO2011087075A1 (fr) 2011-07-21

Family

ID=44304344

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2011/050505 WO2011087075A1 (fr) 2010-01-14 2011-01-14 Appareil pour couper une fibre optique

Country Status (2)

Country Link
JP (1) JP2011145478A (fr)
WO (1) WO2011087075A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62257108A (ja) * 1986-04-30 1987-11-09 Sumitomo Electric Ind Ltd 光フアイバ自動切断装置
JPS638702U (fr) * 1986-07-03 1988-01-21
JPH0431102U (fr) * 1990-07-11 1992-03-12
JP2004101661A (ja) * 2002-09-06 2004-04-02 Hitachi Metals Ltd 光ファイバ切断装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62257108A (ja) * 1986-04-30 1987-11-09 Sumitomo Electric Ind Ltd 光フアイバ自動切断装置
JPS638702U (fr) * 1986-07-03 1988-01-21
JPH0431102U (fr) * 1990-07-11 1992-03-12
JP2004101661A (ja) * 2002-09-06 2004-04-02 Hitachi Metals Ltd 光ファイバ切断装置

Also Published As

Publication number Publication date
JP2011145478A (ja) 2011-07-28

Similar Documents

Publication Publication Date Title
JP6664426B2 (ja) 光ファイバ切断方法および光ファイバカッタ
JP5624604B2 (ja) ブレードレス光ファイバ切断工具
US4159793A (en) Hand-held tool for optical fiber waveguide end preparation
JP5120413B2 (ja) 光ファイバ切断装置
EP1950588B1 (fr) Dispositif de découpe de fibre optique
JP2009128516A (ja) 光ファイバ切断用カッター、光ファイバの切断方法および光ファイバ切断用カッターを備えた光ファイバ切断機
JP2012073374A (ja) 光ファイバ切断装置
JP2002515141A (ja) 光ファイバーなどの角度つき劈開のための工具
KR20120054641A (ko) 무블레이드 광섬유 절단기
US7669744B2 (en) Device and method for cleaving optical fibers
TW201018652A (en) Plier for fragile material
JP5639455B2 (ja) 光ファイバ切断装置及び光ファイバ切断方法
WO2011087075A1 (fr) Appareil pour couper une fibre optique
JP4057553B2 (ja) 光ファイバ切断器
JP5357740B2 (ja) 光ファイバ切断装置及び光ファイバ切断方法
JP4424934B2 (ja) 光ファイバの切断装置及び切断方法
JP2006284839A (ja) 光ファイバの切断方法及び光ファイバの切断装置
JP2008090189A (ja) 光ファイバの切断装置及び光ファイバの切断方法
JP4256766B2 (ja) 光ファイバの切断方法及びファイバカッター
JP2007021686A (ja) 管の切断・面取機
WO2020184279A1 (fr) Outil de coupe de fibre optique et procédé de coupe de fibre optique
JP3001120B2 (ja) 小型化された光ファイバ切断用ツール
JP2021026139A (ja) 光ファイバカッタ及び光ファイバ切断方法
JP2004117794A (ja) プラスチック光ファイバの端面処理方法およびそのための装置
JP2021026138A (ja) 光ファイバカッタ及び光ファイバ切断方法

Legal Events

Date Code Title Description
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11732945

Country of ref document: EP

Kind code of ref document: A1