JPH0363042B2 - - Google Patents

Info

Publication number
JPH0363042B2
JPH0363042B2 JP10437682A JP10437682A JPH0363042B2 JP H0363042 B2 JPH0363042 B2 JP H0363042B2 JP 10437682 A JP10437682 A JP 10437682A JP 10437682 A JP10437682 A JP 10437682A JP H0363042 B2 JPH0363042 B2 JP H0363042B2
Authority
JP
Japan
Prior art keywords
optical fiber
heat
tension
fusion
reinforcing
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.)
Expired - Lifetime
Application number
JP10437682A
Other languages
Japanese (ja)
Other versions
JPS58220114A (en
Inventor
Mitsuru Myauchi
Michito Matsumoto
Toshiaki Kakii
Juichi Toda
Shigeru Tategami
Ko Watanabe
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.)
Furukawa Electric Co Ltd
Nippon Telegraph and Telephone Corp
Sumitomo Electric Industries Ltd
Original Assignee
Furukawa Electric Co Ltd
Nippon Telegraph and Telephone Corp
Sumitomo Electric Industries Ltd
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 Furukawa Electric Co Ltd, Nippon Telegraph and Telephone Corp, Sumitomo Electric Industries Ltd filed Critical Furukawa Electric Co Ltd
Priority to JP10437682A priority Critical patent/JPS58220114A/en
Publication of JPS58220114A publication Critical patent/JPS58220114A/en
Publication of JPH0363042B2 publication Critical patent/JPH0363042B2/ja
Granted legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/255Splicing of light guides, e.g. by fusion or bonding
    • G02B6/2558Reinforcement of splice joint

Landscapes

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

Description

【発明の詳細な説明】 [産業上の利用分野] 本発明は、光フアイバー融着接続部の補強方法
に関するものであつて、特にその接続部強度の信
頼性向上を目的とするものである。
DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for reinforcing an optical fiber fusion splice, and particularly aims at improving the reliability of the strength of the joint.

[従来技術と問題点] 従来光フアイバーの融着接続部は、光フアイバ
ーの非接続部に対して著しく強度が低下すること
が知られている。この原因は接続部に生じた微細
キズによるものとされているが、この光フアイバ
ー融着接続部の長期信頼性を確保するため、接続
部の補強を施す前に、一定張力を負荷し、その張
力によつて接続部の破断を検査することによつ
て、低強度の融着接続部を予め補強前に除去する
ことを行なつている。この一連の低強度融着接続
部の除去工程を「スクリーニング」と称してい
る。
[Prior Art and Problems] It is known that the strength of conventional fusion spliced portions of optical fibers is significantly lower than that of unconnected portions of optical fibers. The cause of this is said to be minute scratches that occur at the joint, but in order to ensure the long-term reliability of this optical fiber fusion splice, a constant tension is applied before reinforcing the joint. By testing the joints for fracture under tension, low-strength fusion splices can be removed before reinforcement. This series of steps for removing low-strength fusion splices is called "screening."

現状では、第1図に例を示すように、このスク
リーニングと補強工程とはそれぞれ別の装置を用
いて独立して行なつている。第1図において、イ
図は張力負荷装置の、ロ図は補強装置のそれぞれ
構成を示す図である。イ図において、融着接続部
2を有する光フアイバー1は、融着接続部2の両
側をチヤツク13,13′で把持された後、矢印
方向の一定の張力Tが負荷される。この際、接続
部強度の低いものは破断するので除去される。こ
こで、破断しなかつた融着接続部2は、張力を除
去された後、チヤツク13,13′を取外し、ロ
図に示す補強装置に移動し、装着される。補強装
置は、融着接続部2を含む光フアイバー1の周辺
部分に熱収縮チユーブ4をかぶせたものを適当に
保持し、この熱収縮チユーブ4を加熱器5により
加熱して熱収縮させて、融着接続部2付近に密着
させることにより補強するものである。このよう
に、スクリーニングを施した光フアイバー融着接
続部2は、張力負荷装置から取外し、別の補強装
置に移動、装着されるが、この際新たに生じた微
細キズに関しては、発見されずにそのまま補強さ
れるので、接続部強度の長期的信頼性に欠ける欠
点を有していた。
At present, as shown in FIG. 1, the screening and reinforcing steps are performed independently using separate devices. In FIG. 1, Figure A shows the structure of the tension loading device, and Figure B shows the structure of the reinforcing device. In the figure, an optical fiber 1 having a fusion splice 2 is held by chucks 13, 13' on both sides of the fusion splice 2, and then a constant tension T in the direction of the arrow is applied. At this time, connections with low strength will break and are removed. Here, after the tension is removed from the fusion splice 2 that has not broken, the chucks 13, 13' are removed, and the fusion splice 2 is moved to and installed in the reinforcing device shown in FIG. The reinforcing device appropriately holds a heat-shrinkable tube 4 covering the peripheral portion of the optical fiber 1 including the fusion splicing portion 2, and heats the heat-shrinkable tube 4 with a heater 5 to cause the heat-shrinkable tube to shrink. It is reinforced by bringing it into close contact with the vicinity of the fusion splice 2. In this way, the optical fiber fusion spliced part 2 subjected to screening is removed from the tension loading device, moved to another reinforcing device, and attached, but at this time, newly generated minute scratches are not discovered. Since it is reinforced as it is, it has the disadvantage of lacking long-term reliability in connection strength.

[発明の目的・構成] 本発明は上述従来の光フアイバー融着接続部補
強における欠点を解消するためになされたもので
あつて、周辺部分を含んで融着接続部に熱収縮チ
ユーブをかぶせた光フアイバーを準備し、この光
フアイバーを両側で把持して、一旦一定の接続部
破断検査のための張力を加えた後、この張力を解
き、光フアイバー把持の状態で前記熱収縮チユー
ブを加熱収縮させる方法にあり、スクリーニング
を施した融着接続部を移動させることなく、その
まま把持した状態で連続して補強を施すことによ
り、スクリーニングによつて得られた溶着接続部
強度の信頼性がそのまま補強後まで保存されるよ
うにし、光フアイバー融着接続部補強部の長期的
信頼性を向上させようとするものである。
[Object of the Invention/Structure] The present invention has been made in order to eliminate the above-mentioned drawbacks in reinforcing the conventional optical fiber fusion splice, and the present invention has been made by covering the fusion splice including the peripheral portion with a heat shrink tube. Prepare an optical fiber, grip the optical fiber on both sides, apply a certain tension to inspect the connection for breakage, release the tension, and heat-shrink the heat-shrinkable tube while the optical fiber is gripped. By applying continuous reinforcement while holding the screened fusion splice without moving it, the reliability of the strength of the weld joint obtained by screening is directly reinforced. The purpose is to improve the long-term reliability of the optical fiber fusion splice reinforcement by preserving it until later.

以下本発明の実施を図により説明する。第2図
は本発明を実施する装置である。第1図と同一符
号は同一部分を示す。図において、3,3′は光
フアイバー1を把持する、下台6上に設けられた
一対のチヤツクで、それぞれ予め一定張力Tに設
定されたばね力を有するスクリーニング用ばね
8,8′により、把持した融着接続部2に矢印方
向の一定の張力Tが負荷されるようになつてお
り、7はばね支持体である。このばね支持体7を
前記両ばね8,8′間に介在させて前記一定の張
力Tが負荷され、これを除くことによつて前記張
力を解除するようにするか、前記ばね8,8′に
対向する方向で、ばね支持体7を伸縮できるよう
に構成しておけば、所定張力Tを与え、これを解
除することができる。
DESCRIPTION OF THE PREFERRED EMBODIMENTS The implementation of the present invention will be explained below using figures. FIG. 2 shows an apparatus for implementing the invention. The same reference numerals as in FIG. 1 indicate the same parts. In the figure, reference numerals 3 and 3' denote a pair of chucks provided on the lower base 6 that grip the optical fiber 1, and the chucks are gripped by screening springs 8 and 8' each having a spring force preset to a constant tension T. A constant tension T in the direction of the arrow is applied to the fusion splice 2, and 7 is a spring support. Either the spring support 7 is interposed between the springs 8, 8', the constant tension T is applied thereto, and the tension is released by removing this, or the springs 8, 8' If the spring support body 7 is constructed so as to be able to expand and contract in the direction opposite to , it is possible to apply a predetermined tension T and release it.

先ず融着接続部2を有する光フアイバー1は接
続部2を含む周辺部分に熱収縮チユーブ4をかぶ
せられた状態で、接続部2の両側をチヤツク3,
3′に把持された後、矢印方向の一定の、融着接
続部破断検査のための張力Tが負荷される。この
際、張力により破断した接続部強度の低いものは
除去される。張力により断線しなかつた接続部2
の張力を除去し、元のチヤツク3,3′で把持し
た状態とする。
First, the optical fiber 1 having the fusion spliced part 2 is covered with a heat shrink tube 4 around the peripheral part including the spliced part 2, and chucks 3,
3', a constant tension T in the direction of the arrow is applied to inspect the fusion splice for breakage. At this time, connections that are broken due to tension and have low strength are removed. Connection part 2 that did not break due to tension
The tension is removed from the chucks 3 and 3', and the chucks 3 and 3' are held together again.

一方、下台6上には熱収縮チユーブ4を加熱す
る加熱器5より成る補強装置が設けられている。
この装置により上述の熱収縮チユーブ4を加熱す
ることにより、熱収縮させ、接続部2を含む光フ
アイバー周辺部分に熱収縮チユーブ4を密着させ
て、融着接続部を補強する。しかる後光フアイバ
ー1をチヤツク3,3′より取外して、接続部2
を取出す。
On the other hand, a reinforcing device consisting of a heater 5 for heating the heat shrink tube 4 is provided on the lower stand 6.
By heating the above-mentioned heat-shrinkable tube 4 with this device, the heat-shrinkable tube 4 is heat-shrinked, and the heat-shrinkable tube 4 is brought into close contact with the peripheral portion of the optical fiber including the connecting portion 2, thereby reinforcing the fusion spliced portion. Remove the corresponding halo fiber 1 from the chucks 3, 3' and connect the connecting part 2.
Take out.

[発明の効果] このようにして融着接続部の補強を行なうと、
スクリーニング後、接続部のチヤツク取外し、補
強装置への移動、装着を行なわずに、そのままの
把持状態で補強され、スクリーニング後補強完了
まで光フアイバー融着接続部に新たにキズが発生
する原因が無くなるので、スクリーニングにより
得られた接続部強度の信頼性がそのまま補強後も
保存されることになる。
[Effect of the invention] By reinforcing the fusion splice in this way,
After screening, the connecting part is reinforced without removing the chuck, moving it to the reinforcing device, or attaching it, and it is reinforced as it is, eliminating the cause of new scratches on the optical fiber fusion spliced part until the reinforcement is completed after screening. Therefore, the reliability of the connection strength obtained through screening is preserved even after reinforcement.

また、スクリーニングの後、熱収縮チユーブに
よる補強を別の場所に移して行う必要なく、作業
時間の短縮をはかることができる。
In addition, after screening, there is no need to move the reinforcement using the heat shrink tube to another location, which can shorten the work time.

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

第1図イ,ロは従来の装置の例を示す図で、イ
図は張力負荷装置の、ロ図は補強装置のそれぞれ
構成を示す図である。第2図は本発明を実施する
装置の側面図である。 1…光フアイバー、2…融着接続部、3,3′,
13,13′…チヤツク、4…熱収縮チユーブ、
5…加熱器、6…下台、7…ばね支持体、8,
8′…スクリーニング用ばね。
FIGS. 1A and 1B are diagrams showing an example of a conventional device, in which FIG. 1A is a diagram showing the configuration of a tension loading device, and FIG. FIG. 2 is a side view of an apparatus implementing the invention. 1... Optical fiber, 2... Fusion splicing part, 3, 3',
13, 13'...Chuck, 4...Heat shrink tube,
5... Heater, 6... Lower stand, 7... Spring support, 8,
8′...Screening spring.

Claims (1)

【特許請求の範囲】[Claims] 1 周辺部分を含んで融着接続部に熱収縮チユー
ブをかぶせた光フアイバーを準備して、該光フア
イバーを両側で把持して、一旦一定の接続部破断
検査のための張力を加えた後、該張力を解き、光
フアイバー把持の状態で前記熱収縮チユーブを加
熱収縮させることを特徴とする光フアイバー接続
部補強方法。
1. Prepare an optical fiber with a heat-shrinkable tube covering the fusion splice including the peripheral portion, grip the optical fiber on both sides, and once apply a certain tension for testing the splice for breakage, A method for reinforcing an optical fiber connection portion, comprising releasing the tension and heat-shrinking the heat-shrinkable tube while holding the optical fiber.
JP10437682A 1982-06-16 1982-06-16 Reinforcing device for juncture of optical fiber with tension loader Granted JPS58220114A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10437682A JPS58220114A (en) 1982-06-16 1982-06-16 Reinforcing device for juncture of optical fiber with tension loader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10437682A JPS58220114A (en) 1982-06-16 1982-06-16 Reinforcing device for juncture of optical fiber with tension loader

Publications (2)

Publication Number Publication Date
JPS58220114A JPS58220114A (en) 1983-12-21
JPH0363042B2 true JPH0363042B2 (en) 1991-09-27

Family

ID=14379060

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10437682A Granted JPS58220114A (en) 1982-06-16 1982-06-16 Reinforcing device for juncture of optical fiber with tension loader

Country Status (1)

Country Link
JP (1) JPS58220114A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0766090B2 (en) * 1985-08-30 1995-07-19 住友電気工業株式会社 Reinforcing method of fusion spliced part of multi-core optical fiber
JPH0423211Y2 (en) * 1987-06-04 1992-05-29
JPH0423212Y2 (en) * 1989-06-29 1992-05-29

Also Published As

Publication number Publication date
JPS58220114A (en) 1983-12-21

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