JPS5938715A - Method for reinforcing juncture of optical fibers and its reinforcing member - Google Patents
Method for reinforcing juncture of optical fibers and its reinforcing memberInfo
- Publication number
- JPS5938715A JPS5938715A JP15023182A JP15023182A JPS5938715A JP S5938715 A JPS5938715 A JP S5938715A JP 15023182 A JP15023182 A JP 15023182A JP 15023182 A JP15023182 A JP 15023182A JP S5938715 A JPS5938715 A JP S5938715A
- Authority
- JP
- Japan
- Prior art keywords
- groove
- reinforcing member
- optical fiber
- reinforcing
- juncture
- 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.)
- Pending
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
- G02B6/255—Splicing of light guides, e.g. by fusion or bonding
- G02B6/2558—Reinforcement 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)
Abstract
Description
【発明の詳細な説明】
本発明は光フアイバ接続部の補強方法とその補強部材に
関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for reinforcing an optical fiber connection portion and a reinforcing member thereof.
低損失の接続効果をねらって多用されている光ファイバ
の融着接続法では、第1図のごとく光フアイバ心線など
と称されている1対の被覆光ファイバ(1)A、(1)
Bの端部から被覆層やコーティング層を除去し、こうし
て被覆部+21 A J2) B端から露出された素線
状の被覆除去部(3)A、(3)Bを所定長さに切断し
た後、両被覆除去部(3)A、(3)Bの先端を互いに
突き合わせ状態として放電加熱、レーザ加熱などにより
融着接続している。In the optical fiber fusion splicing method, which is often used to achieve a low-loss splicing effect, a pair of coated optical fibers (1)A, (1), called optical fiber cores, etc., are connected as shown in Figure 1.
The coating layer and the coating layer were removed from the end of B, and the coated portion +21 A J2) was cut into a predetermined length. After that, the ends of both coating removal parts (3)A and (3)B are butted against each other and fused and spliced by electric discharge heating, laser heating, or the like.
かかる光フアイバ接続部は、被覆除去部(3)A、(3
1Bで構成された素線状態にあり、したがって強度は乏
しく、これを補償すぺ〈光ファイノ(接続部には補強手
段が講じられる。Such an optical fiber connection part has coating removal parts (3)A, (3)
The fiber is in the state of a strand made of 1B, and therefore has poor strength.To compensate for this, reinforcing means are taken at the connection.
従来、この種の補強手段として上記接続部の外周にステ
ンレスなどの金属〕々イブを被せるもの、あるいはV溝
板と蓋体とを被着するものなどがあるが前者の場合はバ
イブと接続部との相互に隙間があや、温度変化にともな
う光フアイバ被覆部の膨張収縮により該パイプ内で光フ
アイバ接続部(素線)が突き出し座屈を起こし、これに
より伝送ロスを増加させるとか、はなはだしいときは破
断も生じるといった問題があり、後者の場合は各板体と
接続部との接着時、気泡が混入しやすく、これが原因で
ロス増や破断が完全に解消できなくなっている。Conventionally, as reinforcement means of this type, there have been methods such as covering the outer periphery of the connection part with a vibrator made of metal such as stainless steel, or methods of covering a V-groove plate and a lid, but in the case of the former, the vibrator and the connection part When there is a gap between the pipe and the pipe, the optical fiber connection part (strands) protrudes within the pipe due to expansion and contraction of the optical fiber coating due to temperature changes, causing buckling, which increases transmission loss. In the case of the latter, air bubbles tend to get mixed in when bonding each plate and the connection part, and this makes it impossible to completely eliminate increased loss and breakage.
その他、モールド成形法による補強、熱収縮性チューブ
による補強もあるが、手数がかかりすぎるとか、補強効
果が充分でないといった点に問題がある0
本発明は上記の諸問題点に対処すべく光フアイバ接続部
の補強方法、補強部材を提供せんとするもので、以下そ
の具体的方法、具体的構成につき、図示の実施例を参照
して説明する。Other methods include reinforcing by molding and reinforcing by heat-shrinkable tubes, but these methods have problems in that they are too time-consuming and the reinforcing effect is not sufficient.The present invention aims to solve the above problems by using optical fibers. The purpose is to provide a method and a reinforcing member for reinforcing the connecting portion, and the specific method and structure will be described below with reference to the illustrated embodiments.
第2図(イ)〜に)はいずれも本発明番こかかる補強部
材(4)を示したものであり、これら補強部材(4)は
ポリアミド、ポリエチレンなどの熱可塑性樹脂、あるい
は該樹脂と抗張力材との複合劇からなる。Figures 2 (a) to 2) all show reinforcing members (4) according to the present invention, and these reinforcing members (4) are made of thermoplastic resins such as polyamide and polyethylene, or are made of thermoplastic resins such as polyamide and polyethylene, or are made of thermoplastic resins with tensile strength It consists of a composite play with wood.
上記Iこおいて、第2図(イ)の補強部材(4)は熱可
塑性樹脂のみからなり、該補強部材(4)の長手方向ζ
こは凹溝(5)が形成されているが、この凹溝(5)は
その長手方向中間にある溝部(6)とその両端にある溝
部(7)a、(7)bとが形態を異にしており、両端の
溝部(1)a 、(7N)りは中間の溝部(6)よりも
大きくなっている〇
第2図(ロ)の補強部材(4)は同図(イ)のものにお
いてその内部に長手の抗張力羽(8)が埋設されたもの
であり、この抗張力材(8)としてはステンレスなどの
金属製とか、FRP製のものなどが採用される。In the above I, the reinforcing member (4) in FIG. 2(a) is made of only thermoplastic resin, and the reinforcing member (4) is
A groove (5) is formed here, and this groove (5) has a shape with a groove (6) in the middle in the longitudinal direction and grooves (7) a and (7) b at both ends. The grooves (1)a and (7N) at both ends are larger than the middle groove (6).The reinforcing member (4) in Figure 2 (B) is different from that in Figure 2 (A). The tensile strength material (8) is made of metal such as stainless steel or FRP.
一方、第2図(ハ)の補強部材(4)は熱可塑性樹脂製
の円筒体に長手方向のスリットを形成したごとき形状を
有しており、その凹溝(5)も長手方向にわたり一様な
形状となっている。On the other hand, the reinforcing member (4) in Fig. 2 (c) has a shape similar to that of a thermoplastic resin cylinder with longitudinal slits, and its grooves (5) are also uniform in the longitudinal direction. It has a shape.
さらに第2図に)の補強部材(4)は同図(ハ)のもの
においてその内部に複数本の抗張力U’ +8] +8
1 (8)・・・・・が埋設されたものである。Furthermore, the reinforcing member (4) shown in Fig. 2) has a plurality of tensile strength U' +8] +8 in the reinforcing member (4) shown in Fig. 2 (c).
1 (8)... is buried.
なお、凹溝Φ)の断面形状としては■形などの角形、円
弧形などもあり得る。Note that the cross-sectional shape of the groove Φ) may be a rectangular shape such as a ■ shape, or a circular arc shape.
つぎに前記第2図(ロ)の補強部材(4)を用いて行な
う本発明方法の】実施例を第3図(イ)(ロ)により説
明する〇
第3図(イ)において、補強部材(4)の凹溝(5)内
には前述した第1図の光フアイバ接続部を嵌めこむが、
この際被覆除去部+3+ A 、 +3) Bは中間の
溝部(6)内へ挿入し、かつ、被覆部(2)A、(2)
Bの端部は両端の溝部L7) a 、 (71b内へ挿
入する。Next, an embodiment of the method of the present invention carried out using the reinforcing member (4) shown in FIG. 2 (B) will be explained with reference to FIGS. The optical fiber connection part shown in Fig. 1 mentioned above is fitted into the groove (5) of (4).
At this time, the covering removal part +3+ A, +3) B is inserted into the intermediate groove part (6), and the covering part (2) A, (2)
The ends of B are inserted into the grooves L7) a and (71b) at both ends.
こうした後、光フアイバ接続部を内包せる上記補強部材
(4)を加熱加圧式の成形型(9)内へセットし、ここ
で補強部材(4)を加熱してその熱可塑性樹脂を軟化さ
せ、かつ、同時に加圧して凹溝(51を消去し、これに
より光フアイバ接続部の外周を第3図(ロ)のごとく完
全に被包して当該接続部を補強するのである。After this, the reinforcing member (4) that can contain the optical fiber connection part is set in a heating and pressurizing mold (9), where the reinforcing member (4) is heated to soften the thermoplastic resin, At the same time, pressure is applied to erase the concave groove (51), thereby completely enveloping the outer periphery of the optical fiber connection part as shown in FIG. 3(B) and reinforcing the connection part.
もちろん第2図(イ)(ハ)に)の補強部材(4)を用
いた場合でも上記と同様に光フアイバ接続部が補強でき
るのであり、例えば第2図に)の補強部材(4)を用い
た実施例では第4図のごとき補強状態が得られる。Of course, even if the reinforcing member (4) shown in Fig. 2 (A) and (C) is used, the optical fiber connection part can be reinforced in the same way as above. For example, the reinforcing member (4) shown in Fig. 2) In the example used, a reinforced state as shown in FIG. 4 is obtained.
この際、補強部材(4)内に抗張力椙(8)が埋設され
ているとその補強効果はより高くなる。At this time, if the tensile strength pad (8) is embedded within the reinforcing member (4), the reinforcing effect will be higher.
以上説明した通り、本発明の方法は接続端側に被覆除去
部(3)A、(3)Bを有する1対の被覆光ファイバF
il A 、 ill Bが、該各被覆除去部+3)A
、(3)Bの先端を互いに突き合わせ状態として融着接
続されている光フアイバ接続部の補強方法において、熱
可塑性樹脂からなる補強部材(4)にはその外周長手方
向に沿って凹溝(5)を形成しておき、該凹溝(5)内
に光フアイバ接続部を嵌めこんだ後、加熱加圧手段によ
り補強部材(4)を変形させて凹溝(5)を消去し、こ
れによりその接続部を被包することを特徴としている。As explained above, the method of the present invention connects a pair of coated optical fibers F having coat removal parts (3)A and (3)B on the connection end side.
ill A and ill B are the respective coating removal parts +3) A
, (3) In a method for reinforcing an optical fiber connection part in which the ends of B are butted together and fusion spliced, the reinforcing member (4) made of thermoplastic resin is provided with a concave groove (5) along the longitudinal direction of its outer periphery. ) is formed, and after fitting the optical fiber connection part into the groove (5), the reinforcing member (4) is deformed by heating and pressurizing means to erase the groove (5). It is characterized by enclosing the connection part.
したがって本発明方法の場合、凹溝(5)内に光フアイ
バ接続部を嵌めこみ、補強部材(4)を加熱加圧するだ
けの工程で当該接続部が補強できるから熟練は全く要せ
ず、現場での作業においても簡易迅速に実施できるよう
になり、しかも補強部利(4)は光フアイバ接続部の外
周に密着するから気孔、空隙などの発生もなく、これに
起因した光フアイバ接続部の座屈、破断、伝送ロス増が
解消されて機械的特性、温度特性、伝送特性等も満足で
きるものになる。Therefore, in the case of the method of the present invention, the optical fiber connection part can be reinforced by simply fitting the optical fiber connection part into the groove (5) and heating and pressurizing the reinforcing member (4), so no skill is required and on-site In addition, since the reinforcing part (4) adheres closely to the outer periphery of the optical fiber connection, there is no formation of pores or voids, which can prevent the formation of optical fiber connections. Buckling, breakage, and increased transmission loss are eliminated, and the mechanical properties, temperature characteristics, transmission characteristics, etc. become satisfactory.
さらに本発明の補強部材(4)は熱可塑性樹脂からなり
、外周長手方向に光ファイバ接続部嵌めこみ用の凹溝(
5)が形成されていることを特徴としているから、前記
方法を実施するのに最適な条件を具備していることにな
り、したがって光フアイバ接続部を補強する際、当該補
強部材(4)を用いることによりその実施が効率よく、
しかも問題なく行なえることとなる。Furthermore, the reinforcing member (4) of the present invention is made of thermoplastic resin, and has a concave groove (4) for fitting the optical fiber connection part in the longitudinal direction of the outer circumference.
Since the reinforcing member (4) is characterized by the formation of a By using it, the implementation becomes efficient,
Moreover, it can be done without any problem.
第1図は光フアイバ接続部の説明図、第2図(イ)〜に
)は本発明方法にかかる補強部材を各種例示した斜視図
ならびに断面図、第3図(イ)(ロ)は本発明方法にか
かる光フアイバ接続部の補強例を示した縦断正面図と縦
断側面図、第4図は同上の他側を示した縦断側面図であ
る〇
(IIA、 +IIB・・・・・被覆光ファイバ+21
A、+21B・・・・・被覆部
+31 A 、 f31 B・・・・・被覆除去部(4
)・・・・・補強部材
(5)・・・・・凹 溝
(6)、t7) a 、 t71 b ・・”・溝部特
許出願人
代理人 弁理士 井 藤 酸
第1図
一
第2図
第3図
(4)
ハ 4 図
茨城県那珂郡東海村大字白方字
白根162番地日本電信電話公社
茨城電気通信研究所内
[株])発 明 者 古用真−
茨城県那珂郡東海村大字白方字
白根162番地日本電信電話公社
茨城電気通信研究所内
■出 願 人 日本電信電話公社Figure 1 is an explanatory diagram of an optical fiber connection part, Figures 2 (a) to 2) are perspective views and sectional views showing various examples of reinforcing members according to the method of the present invention, and Figures 3 (a) and (b) are illustrations of the present invention. A vertical front view and a vertical side view showing an example of reinforcing the optical fiber connection part according to the invention method, and FIG. 4 is a vertical side view showing the other side of the same as above (IIA, +IIB... Coated light fiber +21
A, +21B...Coating part +31 A, f31B...Coating removed part (4
)...Reinforcement member (5)...Concave groove (6), t7) a, t71 b..." Mizobe Patent applicant's agent Patent attorney Ifuji Akira Figures 1 and 2 Figure 3 (4) C 4 Figure 162 Shirakata Shirane, Oaza Shirakata, Tokai Village, Naka District, Ibaraki Prefecture, Nippon Telegraph and Telephone Public Corporation, Ibaraki Telecommunications Research Institute [Co., Ltd.] Inventor: Makoto Furuyo - Oaza Shiro, Tokai Village, Naka District, Ibaraki Prefecture 162 Shirane, Nippon Telegraph and Telephone Public Corporation, Ibaraki Telecommunications Research Institute ■Applicant: Nippon Telegraph and Telephone Public Corporation
Claims (3)
イバが、該各被覆除去部の先端を互いに突き合わせ状態
として融着接続されている光フアイバ接続部の補強方法
において、熱可塑性樹脂からなる棒状の補強部材にはそ
の外周長手方向に沿って凹溝を形成しておき、該凹溝内
に光フアイバ接続部を嵌めこんだ後、加熱加圧手段によ
り補強部材を変形させて凹溝を消去し、これによりその
接続部を被包することを特徴とした光フアイバ接続部の
補強方法。(1) In a method for reinforcing an optical fiber splicing portion, in which a pair of coated optical fibers having a sheath removed portion on the splicing end side are fusion spliced with the tips of the sheath removed portions abutting each other, thermoplastic resin A concave groove is formed along the longitudinal direction of the outer circumference of the rod-shaped reinforcing member, and after fitting the optical fiber connection part into the concave groove, the reinforcing member is deformed by heating and pressing means to form the concave groove. A method for reinforcing an optical fiber connection, characterized in that the groove is eliminated and the connection is thereby encapsulated.
イバが、該各被覆除去部の先端を互いに突き合わせ状態
として融着接続されている光フアイバ接続部の補強部材
において、熱可塑性樹脂からなり、外周の長手方向に光
ファイバ接続部嵌めこみ用の凹溝が形成されていること
を特徴とした光フアイバ接続部の補強部栃。(2) A reinforcing member for an optical fiber splicing portion in which a pair of coated optical fibers having a sheath removed portion on the splicing end side is fusion spliced with the tips of the sheath removed portions abutted against each other, the reinforcing member being made of thermoplastic resin. A reinforcing part for an optical fiber connection part, characterized in that a groove for fitting the optical fiber connection part is formed in the longitudinal direction of the outer periphery.
の溝部よりも大きくなっている特許請求の範囲第2項記
載の光フアイバ接続部の補強部材0(3) The reinforcing member 0 for an optical fiber connection section according to claim 2, wherein the concave groove is such that the grooves at both ends in the longitudinal direction are larger than the groove in the middle in the longitudinal direction.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15023182A JPS5938715A (en) | 1982-08-30 | 1982-08-30 | Method for reinforcing juncture of optical fibers and its reinforcing member |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15023182A JPS5938715A (en) | 1982-08-30 | 1982-08-30 | Method for reinforcing juncture of optical fibers and its reinforcing member |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5938715A true JPS5938715A (en) | 1984-03-02 |
Family
ID=15492409
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15023182A Pending JPS5938715A (en) | 1982-08-30 | 1982-08-30 | Method for reinforcing juncture of optical fibers and its reinforcing member |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5938715A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011227217A (en) * | 2010-04-19 | 2011-11-10 | Chugoku Electric Power Co Inc:The | Fusion reinforcement sleeve |
-
1982
- 1982-08-30 JP JP15023182A patent/JPS5938715A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011227217A (en) * | 2010-04-19 | 2011-11-10 | Chugoku Electric Power Co Inc:The | Fusion reinforcement sleeve |
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