JPH02275908A - Cutting method for multifiber optical cable - Google Patents
Cutting method for multifiber optical cableInfo
- Publication number
- JPH02275908A JPH02275908A JP9907789A JP9907789A JPH02275908A JP H02275908 A JPH02275908 A JP H02275908A JP 9907789 A JP9907789 A JP 9907789A JP 9907789 A JP9907789 A JP 9907789A JP H02275908 A JPH02275908 A JP H02275908A
- Authority
- JP
- Japan
- Prior art keywords
- bare optical
- optical fiber
- optical fibers
- bare
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000003287 optical effect Effects 0.000 title abstract 2
- 239000013307 optical fiber Substances 0.000 claims abstract description 95
- 238000005452 bending Methods 0.000 claims abstract description 8
- 239000011248 coating agent Substances 0.000 claims description 10
- 238000000576 coating method Methods 0.000 claims description 10
- 238000006748 scratching Methods 0.000 claims description 6
- 230000002393 scratching effect Effects 0.000 claims description 6
- 230000006378 damage Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 238000007526 fusion splicing Methods 0.000 description 3
- 239000011247 coating layer Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
Landscapes
- Light Guides In General And Applications Therefor (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
Abstract
Description
【発明の詳細な説明】
(産業上の利用分野)
本発明は多心光ファイバの融着接続において、高強度接
続を実現するための多心光ファイバの切断方法に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for cutting multi-core optical fibers to achieve high-strength splicing in fusion splicing of multi-core optical fibers.
(従来の技術)
第5図は多心光ファイバ心線(1)の構造図で、同図(
イ)は4心光ファイバ心線、同図(ロ)は12心光ファ
イバ心線の横断面図である。(Prior art) Figure 5 is a structural diagram of a multi-core optical fiber (1).
A) is a cross-sectional view of a 4-core optical fiber, and FIG. 2B is a cross-sectional view of a 12-core optical fiber.
多心光ファイバ心線(1)には通常4心、8心、12心
等があり、裸光ファイバ(2)(径125μm)1に一
次被覆届(3a)を有した光ファイバの複数本を並列に
配列し、これらに共通に二次被覆層(3b)を施してリ
ボン状に成形したものである。Multi-core optical fiber (1) usually has 4-core, 8-core, 12-core, etc., and bare optical fiber (2) (diameter 125 μm) 1 has multiple optical fibers with primary coating (3a). are arranged in parallel, a secondary coating layer (3b) is commonly applied to these, and the ribbon is formed into a ribbon shape.
このような多心光ファイバ心線の裸光ファイバを融着接
続する場合、端末部の被覆層を除去して裸光ファイバを
露出させ、露出した裸光ファイバの端部付近を切断して
端面を切揃える必要がある。When fusion splicing bare optical fibers of such multi-core optical fibers, the coating layer at the terminal part is removed to expose the bare optical fiber, and the exposed bare optical fiber is cut near the end to separate the end face. need to be trimmed.
第6図は従来の多心光ファイバの切断方法の手順の説明
図である。FIG. 6 is an explanatory diagram of the procedure of a conventional method for cutting a multi-core optical fiber.
以下第6図に基づいてその方法を説明する。The method will be explained below based on FIG.
■同図(イ)に示すように、多心光ファイバ心線(1)
の端末部被覆(3)を除去して露出した裸光ファイバ(
2)の先端部及び被覆部際をそれぞれクランパ(22)
及び(23)でクランプすると共に、被覆部(3)をク
ランパ(21)でクランプし、裸光ファイバ(2)を空
中に水平に保持する。■As shown in the same figure (a), multi-core optical fiber (1)
The bare optical fiber (
Clampers (22) are placed at the tip and near the coating of 2).
and (23), and the coating portion (3) is clamped by the clamper (21) to hold the bare optical fiber (2) horizontally in the air.
■同図(ロ)のように、加傷刃(24)を裸光ファイバ
(2)の配列方向に平行移動させ、裸光ファイバ(2)
の表面に1〜2μmの初期傷を与える。■As shown in the same figure (b), move the scratching blade (24) parallel to the arrangement direction of the bare optical fibers (2), and
Give an initial scratch of 1 to 2 μm on the surface.
■上記加傷刃(24)によって与えられた初期傷を中心
として、同図(ハ)のように押し棒(25)を当てる。(2) Apply the push rod (25) as shown in FIG.
この押し棒(25)を約1鰭程度押し下げることにより
、裸光ファイバ(2)には曲げ応力が付加され、同図(
ニ)のように裸光ファイバ(2)は初期傷を起点として
切断される。同図(ネ)は切断された多心(例は4心)
光ファイバの上面図である。By pushing down this push rod (25) about one fin, bending stress is applied to the bare optical fiber (2), as shown in the figure.
As in (d), the bare optical fiber (2) is cut starting from the initial scratch. The same figure (ne) shows a disconnected multi-core (example is 4-core)
FIG. 2 is a top view of an optical fiber.
(解決しようとする課題)
上述した従来の多心光ファイバの切断方法においては、
クランパ(22)及び(23)で裸光ファイバ(2)を
水平状にクランプした時に、空中に保持された裸光ファ
イバ(2)の高さ方向に若干のバラツキが発生し、加傷
刃(24)を裸光ファイバ(2)の配列方向に水平移動
させて各裸光ファイバ(2)に初期傷を入れた際、裸光
ファイバ(2)に与えられる初期傷の大きさにバラツキ
が生じ、切断端面不良が発生する。(Problem to be solved) In the conventional method for cutting multi-core optical fibers described above,
When the bare optical fiber (2) is clamped horizontally by the clampers (22) and (23), some variation occurs in the height direction of the bare optical fiber (2) held in the air, and the scratching blade ( 24) is horizontally moved in the direction in which the bare optical fibers (2) are arranged to create initial scratches on each bare optical fiber (2), variations occur in the sizes of the initial scratches given to the bare optical fibers (2). , a defective cut end surface occurs.
又クランパ(22)及び(23)で裸光ファイバ(2)
を空中に保持し、押し棒(25)を当て曲げ応力によっ
て切断した時、第6図(ネ)に示すように、裸光ファイ
バ(2)に押し棒(25)が当った部分(B)及びクラ
ンパ(23)で強くクランプされた領域(A)は微小な
傷が発生しており、通常の裸光ファイバの強度(オリジ
ナル強度的7 kg)の1/10に低下し、融着接続部
の信頼性が低下するという問題点があった。Also, clampers (22) and (23) are used to connect bare optical fiber (2).
When the push rod (25) is held in the air and cut by bending stress, the part (B) where the push rod (25) hits the bare optical fiber (2) is shown in Figure 6 (N). In the area (A) that was strongly clamped by the clamper (23), minute scratches have occurred, and the strength has decreased to 1/10 of the strength of a normal bare optical fiber (original strength: 7 kg), and the fusion splice There was a problem in that the reliability of the system decreased.
(課題を解決するための手段)
本発明は上述の問題点を解消した多心光ファイバの切断
方法を提供するもので、その特徴は、多心光ファイバ心
線の端末部被覆を除去して裸光ファイバを露出する工程
と、上記多心光ファイバ心線の被覆部をクランプすると
共に、露出した複数の裸光ファイバの先端部を水平に配
列してクランプし裸光ファイバを空中に保持した後これ
に一定の張力を印加する工程と、空中に保持した裸光フ
ァイバの上部より先端R状をなす板状の枕によって押え
、水平に配列した裸光ファイバの高さを一定に揃える工
程と、上記枕で押えた裸光ファイバの下部に水平移動す
る加傷刃によって初期傷を付与する工程を含み、前記裸
光ファイバに印加した張力と枕の微小な降下により裸光
ファイバに与える曲げ応力とにより裸光ファイバを切断
することにある。(Means for Solving the Problems) The present invention provides a method for cutting a multi-core optical fiber that solves the above-mentioned problems. A step of exposing the bare optical fibers, clamping the coating of the multi-core optical fiber, and holding the bare optical fibers in the air by horizontally arranging and clamping the exposed tips of the plurality of bare optical fibers. After that, there is a step of applying a certain tension to this, and a step of holding the bare optical fibers held in the air from above with a plate-shaped pillow with a rounded tip to make the height of the horizontally arranged bare optical fibers uniform. , the step of applying an initial scratch to the lower part of the bare optical fiber held down by the pillow with a scratching blade that moves horizontally, and the bending stress applied to the bare optical fiber due to the tension applied to the bare optical fiber and the slight drop of the pillow. The purpose is to cut the bare optical fiber by cutting the bare optical fiber.
(作用)
このような本発明の切断方法においては、裸光ファイバ
(2)の先端部はクランパによってクランプするが、多
心光ファイバ心線の被覆部際はクランプしていない。従
って、裸光ファイバが加傷ズ1“
天辺外の物に接触するのは先端4R状をなす板状の枕の
先端部のみである。しかし、枕の先端部が当る部分は裸
光ファイバの切断端により0.1〜0.2mm以内の位
置であり、仮にこの位置に枕の接触による微小な傷が発
生しても、融着接続の際、電極棒から出る放電アークの
熱により光ファイバの先端部の1酊は溶融し、表面は均
一化され、傷による強度劣化は生じない。(Function) In such a cutting method of the present invention, the tip of the bare optical fiber (2) is clamped by the clamper, but the portion near the coated portion of the multi-core optical fiber is not clamped. Therefore, it is only the tip of the plate-shaped pillow with the tip 4R that the bare optical fiber comes into contact with the object outside the top of the scratched optical fiber. However, the part where the tip of the pillow comes into contact is The position is within 0.1 to 0.2 mm from the cut end, and even if a minute scratch occurs at this position due to contact with the pillow, the heat of the discharge arc emitted from the electrode rod during fusion splicing will damage the optical fiber. The tip of the tip is melted, the surface is made uniform, and the strength does not deteriorate due to scratches.
又本発明においては、空中に保持された裸光ファイバを
先端R吠をなす板状の枕で押え、水平に配列した裸光フ
ァイバの高さを一定に揃えた状態で加傷刃を水平移動さ
せて初期傷を付与するので、初期傷の大きさにバラツキ
が生じることなく、良好な切断端面を得ることが可能と
なる。In addition, in the present invention, the bare optical fibers held in the air are held down by a plate-shaped pillow with an R-shaped tip, and the damaging blade is moved horizontally while the heights of the horizontally arranged bare optical fibers are kept constant. Since the initial flaws are created by causing the initial flaws to occur, it is possible to obtain a good cut end surface without causing any variation in the size of the initial flaws.
(実施例)
第1図は本発明の切断方法に用いる切断装置の具体例の
説明図で、同図(イ)は前面図、同図(ロ)は上面図で
ある。(Example) FIG. 1 is an explanatory diagram of a specific example of a cutting device used in the cutting method of the present invention, in which (A) is a front view and (B) is a top view.
本発明の多心光ファイバの切断方法を、第1図及び第2
図〜第4図に基づいて具体的に説明する。The method for cutting a multi-core optical fiber according to the present invention is shown in FIGS. 1 and 2.
This will be explained in detail based on FIGS.
■多心光ファイバ心線(1)の端末部被覆を除去して裸
光ファイバ(2)を露出させ、被覆部(3)をクランパ
(12)でクランプすると共に、露出した裸光ファイバ
(2)の先端部を水平に配列しクランパ(13)でクラ
ンプする。その状態において被覆部クランパ(12)は
引張りバネ(18)で引張られており、裸光ファイバ(
2)には一定の張力が負荷された状態で空中に保持され
ることになる。■Remove the end coating of the multi-core optical fiber (1) to expose the bare optical fiber (2), clamp the coating (3) with the clamper (12), and remove the exposed bare optical fiber (2). ) are arranged horizontally and clamped with a clamper (13). In this state, the coating clamper (12) is tensioned by the tension spring (18), and the bare optical fiber (
2) will be held in the air with a constant tension applied to it.
■次に第2図に示すように、空中に保持された複数本の
裸光ファイバ(2) lに、先端R状をなす枕(14)
を降下させて上記裸光ファイバ(2)を押え、加傷刃(
+6)に対して複数本の裸光ファイバ(2)の高さが一
定になるように揃える。■Next, as shown in Figure 2, a plurality of bare optical fibers (2) held in the air are connected to a pillow (14) with an R-shaped tip.
is lowered to hold down the bare optical fiber (2), and the damaging blade (
+6), the plurality of bare optical fibers (2) are arranged so that their heights are constant.
これは、第3図(イ)に示すように光ファイバ心線(1
)の被覆部(3)をクランパ(12)でクランプした場
合、同図(ハ)のようにその先端部をクランパ(13)
でクランプした裸光ファイバ(2)の配列に製造]二の
偏肉やピッチ乱れ等のバラツキがあるため、先端をクラ
ンプしてもそれぞれの裸光ファイバ(2)の高さが異な
るため、枕(14)で押えて同図(ハ)のように一定に
揃えるためである。This is an optical fiber core (1
) When the covering part (3) of
Manufactured in an array of bare optical fibers (2) that are clamped at the same time] Due to variations such as uneven thickness and pitch irregularities, the height of each bare optical fiber (2) is different even if the tips are clamped. This is to hold it down with (14) and align it uniformly as shown in the same figure (c).
■この状態において、加傷刃(+6)を第3図(ロ)の
矢印の方向にスライドさせ、裸光ファイバ(2)の下部
に1〜2μmの初期傷を与える。この際、必要に応じて
ダイヤル(17)により加傷刃(16)の高さを調整す
る。(2) In this state, slide the scratching blade (+6) in the direction of the arrow in FIG. 3 (b) to give an initial scratch of 1 to 2 μm on the lower part of the bare optical fiber (2). At this time, the height of the wound blade (16) is adjusted using the dial (17) as necessary.
■次に枕降下調整ツマミ(+5)を0.5〜1關程度降
下させる。この枕(14)による曲げ応力と、ばね(1
8)の引張り力によって、裸光ファイバ(2)は初期傷
を与えたところより第4図のように切断される。■Next, lower the pillow lowering adjustment knob (+5) by about 0.5 to 1 degree. The bending stress caused by this pillow (14) and the spring (1
Due to the tensile force 8), the bare optical fiber (2) is cut at the point where the initial damage was caused, as shown in FIG.
■切断が終れば被覆部クランパ(12)を開き光ファイ
バを装置より取り外す。② When cutting is completed, open the coating clamper (12) and remove the optical fiber from the device.
なお、第1図の切断装置は多心光ファイバの高強度接続
に開発したものであるが、本装置の被覆部クランパ(1
2)及び裸ファイバクランパ(+3)を単心用のクラン
パに取替えることによって、単心光ファイバの高強度接
続のための切断にも利用することが出来る。The cutting device shown in Figure 1 was developed for high-strength connection of multi-core optical fibers, but the sheathing clamper (1
2) and by replacing the bare fiber clamper (+3) with a single-fiber clamper, it can also be used to cut single-core optical fibers for high-strength connections.
(発明の効果)
以」二説明したように本発明の多心光ファイバの切断方
法によれば、空中に保持された裸光ファイバを非接触で
切断するため強度劣化がなく、高強度接続を実現できる
。又引張り力及び枕による曲げ応力の双方の作用により
裸光ファイバを切断するので、揃った切断長と良好な切
断端面が得られる。(Effects of the Invention) As explained below, according to the multi-core optical fiber cutting method of the present invention, bare optical fibers held in the air are cut without contact, so there is no strength deterioration and high-strength connections can be achieved. realizable. Furthermore, since the bare optical fiber is cut by both the tensile force and the bending stress caused by the pillow, a uniform cut length and a good cut end surface can be obtained.
第1図は本発明の切断方法に用いる切断装置の具体例の
説明図で、同図(イ)は前面図、同図(0)は上面図で
ある。
第2図〜第4図は第1図の切断装置を用いた本発明の切
断方法の説明図で、第2図において(イ)は正面図、同
図(ロ)は側面図であり、第3図において(イ)は被覆
部クランプ、同図(ロ)は加傷刃による初期傷の付与、
同図(ハ)は裸光ファイバ部クランプのそれぞれ断面図
を示している。
第5図(イ)及び(ロ)はいずれも多心光ファイバ心線
の構造例の横断面図である。
第6図(イ)〜(ホ)は従来の切断方法の手順の説明図
である。
■・・・多心光ファイバ心線、2・・・裸光ファイバ、
3・・・被覆部、
11・・・ベース台、12・・・被覆部クランパ、13
・・・裸ファイバクランパ、14・・・枕、+5・・・
枕降下調整ツマミ、16・・・加傷刃、17・・・加傷
刃ダイヤル、18・・・ばね。
66一FIG. 1 is an explanatory view of a specific example of a cutting device used in the cutting method of the present invention, in which (A) is a front view and (0) is a top view. 2 to 4 are explanatory diagrams of the cutting method of the present invention using the cutting device shown in FIG. 1. In FIG. 2, (A) is a front view, (B) is a side view, and In Figure 3, (a) shows the clamping of the covering part, and (b) shows the initial damage caused by the scratching blade.
FIG. 3(C) shows a cross-sectional view of the bare optical fiber portion clamp. FIGS. 5(a) and 5(b) are both cross-sectional views of structural examples of multi-core optical fibers. FIGS. 6(A) to 6(E) are explanatory views of the steps of the conventional cutting method. ■...Multi-core optical fiber, 2...Bare optical fiber,
3... Covering part, 11... Base stand, 12... Covering part clamper, 13
...Bare fiber clamper, 14...Pillow, +5...
Pillow lowering adjustment knob, 16... Injury blade, 17... Injury blade dial, 18... Spring. 66-1
Claims (1)
ファイバを露出する工程と、上記多心光ファイバ心線の
被覆部をクランプすると共に、露出した複数の裸光ファ
イバの先端部を水平に配列してクランプし裸光ファイバ
を空中に保持した後これに一定の張力を印加する工程と
、空中に保持した裸光ファイバの上部より先端R状をな
す板状の枕によって押え、水平に配列した裸光ファイバ
の高さを一定に揃える工程と、上記枕で押えた裸光ファ
イバの下部に水平加傷刃によって初期傷を付与する工程
を含み、前記裸光ファイバに印加した張力と枕の微小な
降下により裸光ファイバに与える曲げ応力とにより裸光
ファイバを切断することを特徴とする多心光ファイバの
切断方法。(1) A step of removing the end coating of the multi-core optical fiber to expose the bare optical fiber, and clamping the coating of the multi-core optical fiber, and the tips of the exposed plurality of bare optical fibers. A process of arranging the parts horizontally and clamping them to hold the bare optical fiber in the air and then applying a certain tension to it, and a process of holding the bare optical fiber in the air from the top with a plate-shaped pillow with a rounded tip. , a step of aligning the heights of the horizontally arranged bare optical fibers to a constant level, and a step of applying an initial scratch to the lower part of the bare optical fibers held down by the pillow using a horizontal scratching blade, and applying a voltage to the bare optical fibers. A method for cutting a multi-core optical fiber, characterized in that a bare optical fiber is cut by tension and bending stress given to the bare optical fiber by a minute drop of a pillow.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9907789A JP3077983B2 (en) | 1989-04-18 | 1989-04-18 | Cutting method of multi-core optical fiber |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9907789A JP3077983B2 (en) | 1989-04-18 | 1989-04-18 | Cutting method of multi-core optical fiber |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH02275908A true JPH02275908A (en) | 1990-11-09 |
JP3077983B2 JP3077983B2 (en) | 2000-08-21 |
Family
ID=14237858
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9907789A Expired - Fee Related JP3077983B2 (en) | 1989-04-18 | 1989-04-18 | Cutting method of multi-core optical fiber |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3077983B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000016137A1 (en) * | 1998-09-11 | 2000-03-23 | The Furukawa Electric Co., Ltd. | Optical fiber cutter |
JP2005153025A (en) * | 2003-11-20 | 2005-06-16 | Ntt Advanced Technology Corp | Cutter for optical fiber |
JP2008090189A (en) * | 2006-10-04 | 2008-04-17 | Sumitomo Electric Ind Ltd | Apparatus and method of cutting optical fiber |
-
1989
- 1989-04-18 JP JP9907789A patent/JP3077983B2/en not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000016137A1 (en) * | 1998-09-11 | 2000-03-23 | The Furukawa Electric Co., Ltd. | Optical fiber cutter |
JP2005153025A (en) * | 2003-11-20 | 2005-06-16 | Ntt Advanced Technology Corp | Cutter for optical fiber |
JP4494764B2 (en) * | 2003-11-20 | 2010-06-30 | エヌ・ティ・ティ・アドバンステクノロジ株式会社 | Optical fiber cutting tool |
JP2008090189A (en) * | 2006-10-04 | 2008-04-17 | Sumitomo Electric Ind Ltd | Apparatus and method of cutting optical fiber |
Also Published As
Publication number | Publication date |
---|---|
JP3077983B2 (en) | 2000-08-21 |
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