JPS60195504A - Welding and connecting device of single mode fiber - Google Patents

Welding and connecting device of single mode fiber

Info

Publication number
JPS60195504A
JPS60195504A JP5155284A JP5155284A JPS60195504A JP S60195504 A JPS60195504 A JP S60195504A JP 5155284 A JP5155284 A JP 5155284A JP 5155284 A JP5155284 A JP 5155284A JP S60195504 A JPS60195504 A JP S60195504A
Authority
JP
Japan
Prior art keywords
distance
optical fibers
groove
core
centers
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
Application number
JP5155284A
Other languages
Japanese (ja)
Other versions
JPH0522207B2 (en
Inventor
Takeshi Yamada
剛 山田
Kazukuni Osato
大里　和邦
Masao Suzuki
雅夫 鈴木
Ko Watanabe
渡辺　興
Osamu Kawada
修 河田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujikura Ltd
Nippon Telegraph and Telephone Corp
Original Assignee
Fujikura Ltd
Nippon Telegraph and Telephone Corp
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 Fujikura Ltd, Nippon Telegraph and Telephone Corp filed Critical Fujikura Ltd
Priority to JP5155284A priority Critical patent/JPS60195504A/en
Publication of JPS60195504A publication Critical patent/JPS60195504A/en
Publication of JPH0522207B2 publication Critical patent/JPH0522207B2/ja
Granted legal-status Critical Current

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
    • G02B6/24—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
    • G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
    • G02B6/3834—Means for centering or aligning the light guide within the ferrule
    • G02B6/3843—Means for centering or aligning the light guide within the ferrule with auxiliary facilities for movably aligning or adjusting the fibre within its ferrule, e.g. measuring position or eccentricity
    • 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
    • G02B6/2551—Splicing of light guides, e.g. by fusion or bonding using thermal methods, e.g. fusion welding by arc discharge, laser beam, plasma torch

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Coupling Of Light Guides (AREA)

Abstract

PURPOSE:To execute a connecting at a low loss even if a core of an optical fiber is eccentric, by deriving a distance between the centers of optical fibers which are not welded yet, by measuring a distance of a shift between axes of a V-groove. CONSTITUTION:A V-groove 20 is placed on a lever 22, and moved finely by a rotation of a motor 26. In the beginning, a position of the V-groove 20 is made to coincide and a value of a sensor 28 of that time is derived, and thereafter, an axial matching of a core is executed, and when a value of the sensor 28 of the time when it has been completed is derived, a distance d1 between the centers of optical fibers which are not welded yet is known. Subsequently, the V- groove 20 is shifted excessively by an intentional shift quantity DELTAd, and discharged and heated. In this way, d1 of the time when the axial matching of the core has been ended is known, and accordingly, the discharge heating is executed by giving in advance an axial shift by d1+DELTAd intentionally to the optical fiber, so that the axial shift between the optical fibers of the time when the connection has been ended becomes d1.

Description

【発明の詳細な説明】 この発明は、単一モードファイバの融着接続装置に関し
、とくにそのなかの軸合わせのために光ファイ八を動か
す部分に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fusion splicing device for single mode fibers, and particularly to a portion of the fusion splicing device for moving optical fibers for axis alignment.

色艶ム宜１ 単一モードファイバの融着接続において、低損失接続を
するためには、光ファイバのコア同志が一致するように
調心する必要がある。1. In fusion splicing of single mode fibers, in order to achieve low loss splicing, it is necessary to align the cores of the optical fibers so that they are aligned.

しかし「第１図」のように、光ファイバ１０Ａ、Ｂ内で
コア１２Ａ、Ｂが偏心していると、コア同志が一致する
ように調心したとき、光ファイバ１０Ａ、Ｈの中心間に
ｄｌのずれ（距１１１．）ができる。However, as shown in "Figure 1", if the cores 12A, B are eccentric in the optical fibers 10A, B, when the cores are aligned so that they match, there will be a dl between the centers of the optical fibers 10A, H. A deviation (distance 111.) occurs.

そしてその状態で、放電加熱によって融着接続すると、
表面張力が働いて、「第２図」のように、光ファイバＩ
ＯＡ、Ｈの中心間のずれがｄ。Then, in that state, if we fusion splice using discharge heating,
Surface tension acts on the optical fiber I, as shown in Figure 2.
The deviation between the centers of OA and H is d.

と小さくなる。そして、それにともなってコア１２に曲
がりが生じるため、低損失接続が難しかった。becomes smaller. As a result, the core 12 is bent, making it difficult to establish a low-loss connection.

魚Ｊしと１の 光ファイバのコアが偏心していても、低損失接続ができ
るような単一モードファイバの融着接続装置を提供する
ことである。To provide a single mode fiber fusion splicing device capable of performing low-loss splicing even if the core of the optical fiber is eccentric.

１１五厘１ 表面張力の効果を表すパラメータとして、ｄ＋ｄ２　（
融着前後の光ファイバの中心間の距離の変化）とｔａＩ
　（融着前の光ファイバの中心間の距離）との比ｋを考
えると、ｋは、 に＝＋−−−−−−−−（１） ｄ。11 Gorin1 As a parameter expressing the effect of surface tension, d+d2 (
change in the distance between the centers of optical fibers before and after fusion) and taI
Considering the ratio k to (distance between the centers of optical fibers before fusion), k is: =+−−−−−−−−(1) d.

と表され、通常の放電加熱（４０００Ｖ、ｌ？Ａ　テ、
１秒間くらい）においては、 ｋ＝０．３ である。It is expressed as normal discharge heating (4000V, l?Ate,
(about 1 second), k=0.3.

そこで、上記のｄＩ　（融着前の光ファイバの中心間の
距＃）をめることができれば、融着時の表面張力によっ
てコア軸のずれる量をあらかじめ見込んで光ファイバ軸
をずらせておくことによって、放電加熱後のコア軸を一
致させることができる。Therefore, if the above dI (distance # between the centers of optical fibers before fusion) can be set, it is possible to shift the optical fiber axis by anticipating in advance the amount of deviation of the core axis due to the surface tension during fusion. This makes it possible to align the core axes after discharge heating.

つまり、融着前の光ファイバの中心間の距離を、ｄ、か
らさらに所定の微小長さΔｄだけ余計に、故意にずらせ
ておき（すなわちｄ、＋Δｄにし−Ｃおき）、放電加熱
後　ｄｌに戻るようにすれば、コアに曲がりのない状態
で接続できる。In other words, the distance between the centers of the optical fibers before fusion is intentionally shifted from d by a predetermined minute length Δd (i.e., d is set to +Δd and −C is set), and after discharge heating, the distance between the centers of the optical fibers is shifted from d by a predetermined minute length Δd. If you turn it back, you can connect it without bending the core.

このΔｄは、 （１）式のｄ２をｄ、・ ｄｌをｄ１＋Δｄ とおくことによってめることができ、 ｋ＝０．３ で与えられる。This Δd is d2 in equation (1) is d, dl to d1+Δd It can be achieved by setting k=0.3 is given by

たとえば、ｄｌが３μｌだとすると、Δｄは。For example, if dl is 3μl, Δd is.

やく１．３μｍになる。It soon becomes 1.3 μm.

衾訓しと乳酸 上記のように、ｄＩ　（融着前の光ファイバの中心間の
距離）をめることができればよいのであるが、そのため
には結局のところ、Ｖみぞの軸間のずれの距離を測定で
きればよいのであって、このようにすることがこの発明
の特徴である。Lessons learned and lactic acid As mentioned above, it would be good if we could increase the dI (distance between the centers of the optical fibers before fusion), but in order to do so, it is necessary to increase the deviation between the axes of the V grooves. It is only necessary to be able to measure the distance, and this is a feature of the present invention.

この点について補足説明すると次のとおりである。A supplementary explanation of this point is as follows.

「第３図」のように、融着接続するとき、光ファイバー
ＯＡ、ＢはそれぞれＶ、’ｚぞ２０Ａ、Ｂ　ｌ：に固定
され、微動装置によってＸ方向（水ｆ方向）とｙ方向（
」二下方向）とに動かされる。そして、現在の技術では
、光ファイバＩＯＡ、Ｂの外径は等しく、外形も真円と
みなせるので、Ｖみぞ２ＯＡ、Ｈの軸が一致したとき、
光ファイバ１０Ａ、Ｈの中心も一致し、ずれはゼロであ
る。As shown in "Fig. 3", when fusion splicing, the optical fibers OA and B are fixed at V and 'z 20A and B l:, respectively, and the fine movement device is used to move the optical fibers in the X direction (water f direction) and the y direction (
” (two downward directions). With the current technology, the outer diameters of the optical fibers IOA and B are equal and the outer shape can be considered to be a perfect circle, so when the axes of the V grooves 2OA and H coincide,
The centers of the optical fibers 10A and 10H also coincide, and the deviation is zero.

だから、Ｖみその軸間のずれの距離を測定するというこ
とは、結局光ファイバの中心間の距離をＩ１１定すると
いうのと同じことである。Therefore, measuring the distance of deviation between the axes of V and V is the same as determining the distance between the centers of optical fibers.

次にコア１２Ａ、Ｂの軸合わせを行って「第４図」のよ
うにしたとき、上記のようにＶみぞ２０Ａ、Ｂの軸間の
ずれの距離を測定すれば、ただちに光ファイバｌＯＡ、
Ｈの中心間の距１１１ｄ１がわかる。Next, when the cores 12A and 12B are aligned as shown in Figure 4, if the distance between the axes of the V grooves 20A and 20B is measured as described above, the optical fiber lOA,
The distance 111d1 between the centers of H is known.

それからまた、Ｖみぞ２０Ａ、８間のずれの距離を測定
することができれば、「第５図」のように、光ファイバ
ＩＯＡ、Ｈの中心間の距離を、コアの軸合わせが終った
ところから、ざらにΔｄだけ、故意に大きくすることも
容易にできる。Then, if you can measure the distance of the deviation between the V grooves 20A and 8, you can calculate the distance between the centers of the optical fibers IOA and H from the point where the core axes have been aligned, as shown in "Figure 5". , it is also possible to intentionally increase the value by roughly Δd.

以■−の原理にもとづく接続法ができるように、Ｖみぞ
間のずれの距離を測定して、ｄ、（融着前の光ファイバ
の中心間の距１ｍ）をめたり、光ファイバ１０Ａ、Ｂの
中心ｒｌｆｌの距離をｄ、＋Δｄにしたりすることので
きる装置の具体例を次に挙げる。In order to perform the splicing method based on the principle described below, measure the distance of the deviation between the V grooves and determine d (distance between the centers of the optical fibers before fusion), A specific example of a device that can set the distance from the center rlfl of B to d, +Δd will be given below.

夫妻１１−」 「第６図」において、２０はＶみぞ、１０は光ファイバ
である。■みぞ２０は、てこ２２の上に載っており、モ
ータ２６の回転によって微動する。２４は支点。Mr. and Mrs. 11-'' In ``Figure 6'', 20 is a V groove and 10 is an optical fiber. ■The groove 20 rests on the lever 22 and is slightly moved by the rotation of the motor 26. 24 is the fulcrum.

２８は非接触型の、位置検出用のセンサで、たとえば光
方式や磁気方式のもので５分解能がｉ］のものを使う。Reference numeral 28 denotes a non-contact position detection sensor, such as an optical or magnetic type sensor with a resolution of 5 i].

はじめに、Ｖみぞ２０の位置を一致させて（第３図）そ
のときのセンサ２８の値をめる。それからコアの軸合わ
せをして、それが完了したとき（第４図）のセンサ２８
の値をめると、ａ＋　（融着前の光ファイバの中心間の
距離）がわかる。なお、てこ２２の比率が１：４であれ
ばｄＩの読取り精度は０．２５ル園になる。First, the positions of the V grooves 20 are matched (FIG. 3), and the value of the sensor 28 at that time is calculated. Then align the cores and when that is complete (Figure 4) the sensor 28
By subtracting the value of , a+ (the distance between the centers of the optical fibers before fusion) can be found. Note that if the ratio of the lever 22 is 1:4, the reading accuracy of dI will be 0.25 l.

つぎにＶみぞ２０をΔｄ（故意のずらしｆｊｔ）だけ余
＝１にずらして、放電加熱する。Next, the V groove 20 is shifted by Δd (intentional shift fjt) to a margin of 1, and discharge heating is performed.

「第７図」はそのときの回路の構成を示す。"Figure 7" shows the configuration of the circuit at that time.

センサ２８の出力が、Ａ／Ｄコン八−へ３０をとおって
ＣＰＵ３２にはいり、そこで、上記のｄｌや（２）式の
計算がされ、それにもとづく制御の信号が八ツコア３４
をとおってモータ２６ｘとモータ２６ｙとに送られる。The output of the sensor 28 passes through the A/D controller 30 and enters the CPU 32, where the above dl and equation (2) are calculated, and a control signal based on the calculation is sent to the eight core 34.
The signal is sent to motor 26x and motor 26y through the motor 26x and motor 26y.

そして放電を始める前のＶみぞ２０間のずれをｄ、＋Δ
ｄにする。Then, the deviation between the V grooves 20 before starting discharge is d, +Δ
Make it d.

なお、第１〜６図や、それについての説明は、光ファイ
バ１０やＶみぞ２０を水平方向（Ｘ方向）にだけ動かす
場合だけについて行った。しかし実際には、モータ２６
ｘでＸ方向に動かし、モータ２６ｙでＸ方向に動かす。Note that FIGS. 1 to 6 and the explanation thereof have been made only for the case where the optical fiber 10 and the V-groove 20 are moved only in the horizontal direction (X direction). However, in reality, the motor 26
x to move it in the X direction, and motor 26y to move it in the X direction.

だから光ファイバｌＯなとの動きは、それらｘ、７両方
向の動きの合成されたもの（直角三角計の直角をはさむ
２辺と刺通との関係）になる。Therefore, the movement of the optical fiber 10 is a combination of the movements in both the x and 7 directions (the relationship between the two sides of the right angle triangulation and the piercing).

改笠輩浬 コアの偏心量３μ層の単一モードファイバ（外径１２５
　μｍ、スポットサイズ５ＩＬｍ）同志を、通常のパワ
ーモニター法で軸合わせを行なって、融着接続したとき
の平均接続損失は０．１４ｄＢ（Ｎ＝　２０）、　ＮＡ
Ｘ　＝０．２１ｄＢ−ｔ’アッタ。Single mode fiber with eccentricity of 3μ layer (outer diameter 125
μm, spot size 5ILm), aligned using the normal power monitoring method and fusion spliced, the average splice loss was 0.14 dB (N = 20), NA
X = 0.21 dB-t' atta.

それにたいして、本発明の方法によって接続した結果は
、平均損失が０．０８ｄＢ　（Ｎ　＝２０）　、＋ＩＡ
Ｘ　＝０、１２ｄＢと、非常に良好であった。On the other hand, as a result of connection according to the method of the present invention, the average loss is 0.08 dB (N = 20), +IA
X = 0, 12 dB, which was very good.

支電掬−１ 「第８図」のように、［実施例　ｌ」のセンサ２８の代
りにリミットスイッチ３６を設け、その０Ｎ−ＯＦＦの
切換え位置を、両方のＶみぞ２０が−ｆｉするところ（
原点）に設定しておく。Support power scoop-1 As shown in "Fig. 8", a limit switch 36 is provided in place of the sensor 28 of [Embodiment 1], and its ON-OFF switching position is set to -fi of both V grooves 20. (
(origin).

そして、両方の■みぞ２０の軸が一致したとき（これは
コア１２の軸合わせを行なう前に行なう）、リミットス
イッチ３６がＯＮ→ＯＦＦかまたはＯＦＦ→ＯＮになっ
てモータ２６が止まるようにしておく。When the axes of both grooves 20 are aligned (this is done before aligning the core 12), the limit switch 36 is turned from ON to OFF or from OFF to ON, and the motor 26 is stopped. put.

次に、たとえばパワーモニターＶ：でコア１２を一致さ
せるようにモータ２６を回転させ、そのときのモータ２
６の回転時間から、先の原点からのＶみぞ２０のずれｄ
、をめる。そうするとΔｄもきまるから、原点からｄ、
＋Δｄだけ故意にずらせた所で放電加熱を行なって接続
することができる。Next, for example, with the power monitor V:, the motor 26 is rotated so that the cores 12 are aligned, and the motor 26 at that time is
From the rotation time of 6, the deviation d of the V groove 20 from the previous origin
, put on. Then, Δd is also determined, so d from the origin,
Connection can be made by performing discharge heating at a location intentionally shifted by +Δd.

越１ｕ■刃 「実施例　ｌ」と同様の光ファイバを用いて実験した結
果は、平均接続損失が０．１ＯｄＢ（Ｎ＝　２０）、Ｍ
ＡＸ　＝Ｏ，１５ｄＢと、非常に良好であった。The results of an experiment using the same optical fiber as in "Example 1" showed that the average splice loss was 0.1 OdB (N = 20), M
AX=O, 15 dB, which was very good.

なお、以上のように本発明を実現するには、コアの軸合
わせを完了したときの、Ｖみぞ２０の原点（Ｖみぞ２０
の軸が両方とも一致している点）からの距離が測定でき
ればよいのであるから、上記のモータ２６にステップモ
ータを使ってステップ数をカウントしたり、あるいはモ
ータ２６にロータリーエンコーダをとりつけて、回転角
に応じたパルス数をカウントするなどして、距離を測定
するようにしてもよい。In addition, in order to realize the present invention as described above, it is necessary to set the origin of the V groove 20 (V groove 20
Since all that is required is to measure the distance from the point (where both axes of The distance may be measured by counting the number of pulses depending on the angle.

泣１Ｌ層浬 Ｖみぞの軸間のずれの距離を測定できるようにしたので
、上記のよううに、コアの軸合わせを終ったときのｄ、
（融着前の光ファイバの中心間）距離）がｈかり、した
がって、光ファイバに故意にｄ１＋Δｄだけの軸ずれを
！ｊえておいて放電加熱を行ない、接続を終ったときの
光フアイバ間の軸ずれがｄ、になるようにすることがで
きる。Since we have made it possible to measure the distance of the deviation between the axes of the 1L layer and the V groove, we can measure the distance d,
(distance between the centers of optical fibers before fusion) is h, so the optical fibers are intentionally misaligned by d1+Δd! j, and discharge heating can be performed so that the axis misalignment between the optical fibers becomes d when the connection is completed.

だからコアの偏心している中−モートファイバを融着接
続しても、コアに曲がりができず、したがって低損失の
′Ｊ１続ができるようになる。Therefore, even if a medium-moat fiber with an eccentric core is fusion spliced, the core will not bend, and therefore a low-loss 'J1 splice can be formed.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は偏心しているコアを軸合わせした状態の説明図
で、 第２図は、そのような光ファイバを融着接続するとコア
に曲がりができることの説明図、第３図以下は本発明に
かかるもので、 第３図と第４図と第５図は原理の説明図、第６図は実施
例１の概略説明図で、 第７図はその回路構成の説明図、 第８図は実施例２の概略説明図。 １０、ＩＯＡ、ＩＯＢ：光ファイバ １２．１２Ａ、１２Ｂ：コア ２０．２ＯＡ、２０Ｂ：ＶみぞFigure 1 is an explanatory diagram of the eccentric core with its axes aligned; Figure 2 is an explanatory diagram of how the core can be bent when such optical fibers are fusion-spliced; 3, 4, and 5 are explanatory diagrams of the principle, FIG. 6 is a schematic explanatory diagram of the first embodiment, FIG. 7 is an explanatory diagram of its circuit configuration, and FIG. 8 is an illustration of the implementation. A schematic explanatory diagram of Example 2. 10, IOA, IOB: Optical fiber 12.12A, 12B: Core 20.2OA, 20B: V groove

Claims (1)

【特許請求の範囲】 光ファイバを固定する二つのＶみぞと、前記Ｖみぞの微
動装置と、光フアイバ融着用の放電加熱装置とを持つ単
一モードファイバの融着接続装置において、 前記■みぞの軸間のずれの距離を測定できるようにした
ことを特徴とする、単一モードファイバの融着接続装置
。[Scope of Claims] A single mode fiber fusion splicing device having two V-grooves for fixing optical fibers, a micro-adjustment device for the V-grooves, and a discharge heating device for fusing the optical fibers, comprising: A single mode fiber fusion splicing device characterized by being able to measure the distance of misalignment between the axes of the fiber.
JP5155284A 1984-03-17 1984-03-17 Welding and connecting device of single mode fiber Granted JPS60195504A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5155284A JPS60195504A (en) 1984-03-17 1984-03-17 Welding and connecting device of single mode fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5155284A JPS60195504A (en) 1984-03-17 1984-03-17 Welding and connecting device of single mode fiber

Publications (2)

Publication Number Publication Date
JPS60195504A true JPS60195504A (en) 1985-10-04
JPH0522207B2 JPH0522207B2 (en) 1993-03-26

Family

ID=12890168

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5155284A Granted JPS60195504A (en) 1984-03-17 1984-03-17 Welding and connecting device of single mode fiber

Country Status (1)

Country Link
JP (1) JPS60195504A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0987571A2 (en) * 1998-09-15 2000-03-22 Siemens Aktiengesellschaft Method of making a fused joint between optical fibres
EP1039319A2 (en) * 1999-03-25 2000-09-27 Fujikura Ltd. Method for calibrating discharge heat energy of optical fiber splicing device
KR100443161B1 (en) * 2002-03-06 2004-08-04 주식회사 포앤티 Method of manufacturing an non-alignment connection filter
JP2007226120A (en) * 2006-02-27 2007-09-06 Kyocera Corp Mode field converter and manufacturing method therefor
CN105116493A (en) * 2015-08-24 2015-12-02 深圳市创鑫激光股份有限公司 Fiber welding method and device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5368250A (en) * 1976-11-30 1978-06-17 Nippon Telegr & Teleph Corp <Ntt> Connector of cylindrical bars by melting
JPS5592108U (en) * 1978-12-20 1980-06-25
JPS60111205A (en) * 1983-11-21 1985-06-17 Nippon Telegr & Teleph Corp <Ntt> Fiber fusion connecting method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5368250A (en) * 1976-11-30 1978-06-17 Nippon Telegr & Teleph Corp <Ntt> Connector of cylindrical bars by melting
JPS5592108U (en) * 1978-12-20 1980-06-25
JPS60111205A (en) * 1983-11-21 1985-06-17 Nippon Telegr & Teleph Corp <Ntt> Fiber fusion connecting method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0987571A2 (en) * 1998-09-15 2000-03-22 Siemens Aktiengesellschaft Method of making a fused joint between optical fibres
EP0987571A3 (en) * 1998-09-15 2001-06-13 Siemens Aktiengesellschaft Method of making a fused joint between optical fibres
EP1039319A2 (en) * 1999-03-25 2000-09-27 Fujikura Ltd. Method for calibrating discharge heat energy of optical fiber splicing device
EP1039319A3 (en) * 1999-03-25 2001-03-21 Fujikura Ltd. Method for calibrating discharge heat energy of optical fiber splicing device
US6294760B1 (en) 1999-03-25 2001-09-25 Fujikura Ltd. Method for calibrating discharge heat energy of optical fiber splicing device
KR100443161B1 (en) * 2002-03-06 2004-08-04 주식회사 포앤티 Method of manufacturing an non-alignment connection filter
JP2007226120A (en) * 2006-02-27 2007-09-06 Kyocera Corp Mode field converter and manufacturing method therefor
CN105116493A (en) * 2015-08-24 2015-12-02 深圳市创鑫激光股份有限公司 Fiber welding method and device

Also Published As

Publication number Publication date
JPH0522207B2 (en) 1993-03-26

Similar Documents

Publication Publication Date Title
US3829195A (en) Optical couplers
EP0697117B1 (en) Controlled splicing of optical fibers
CN102243333B (en) Production method for all-fibre quarter-wave plate
US5323225A (en) Method of determining azimuthal position of transverse axes of optical fibers with elliptical cores
JPS60195504A (en) Welding and connecting device of single mode fiber
EP0788611B1 (en) Splicing an optical fiber having twin cores and a fiber having a single core
CN112903249B (en) Cladding numerical aperture measuring device of double-cladding optical fiber
JP3664985B2 (en) Optical fiber fusion splicing device, heating amount adjusting method of optical fiber fusion splicing device, and optical fiber fusion splicing method
US7567745B2 (en) Optical attenuator and method of manufacture
JPH02287504A (en) Method of aligning constant polarization optical fiber
CN111855145A (en) Use method of optical fiber macrobend testing device
JP4570227B2 (en) Method for detecting and adjusting the position of stress applying part in panda fiber
WO2023157564A1 (en) Optical fiber alignment method, optical fiber connector manufacturing method, optical fiber alignment device, and optical fiber fusion splicing machine
JPH03102304A (en) Axis aligning method for optical fiber
JP2005128580A (en) Optical fiber fusion splicing monitoring device and method, and optical fiber fusion splicing device and method
JPH01217306A (en) Detecting device for misalignment of optical fiber
JP2584651B2 (en) Optical fiber fusion splicing method
JPS60237407A (en) Connecting method of optical fiber ends to each other by matching liquid in method for welding and connecting optical fibers to each other
JPS60237409A (en) Setting method of space between end faces of optical fibers in method for welding and connecting optical fibers
CN115683081A (en) Sensitive ring coupling structure and coupling method
JPH0233108A (en) Connecting method for optical fiber
JP2001083362A (en) Method for connecting multiple fiber array and waveguide element and its connecting device
JPS5857723B2 (en) Fusion splicing method for single mode optical fiber
JPS6220803Y2 (en)
JPS60200209A (en) Welding method of optical fiber