JP2525766B2 - Tape type optical unit - Google Patents
Tape type optical unitInfo
- Publication number
- JP2525766B2 JP2525766B2 JP61007626A JP762686A JP2525766B2 JP 2525766 B2 JP2525766 B2 JP 2525766B2 JP 61007626 A JP61007626 A JP 61007626A JP 762686 A JP762686 A JP 762686A JP 2525766 B2 JP2525766 B2 JP 2525766B2
- Authority
- JP
- Japan
- Prior art keywords
- optical unit
- type optical
- tape type
- thickness
- width direction
- 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
Links
Landscapes
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Description
【発明の詳細な説明】 〔発明の概要〕 ガラスフアイバに紫外線硬化型樹脂を２層被覆した直
径Ｄの光フアイバ素線をｎ本一列に配列し、外周に紫外
線硬化型樹脂による一括被覆層を施すテープ型光ユニッ
トにおいて、テープ型光ユニットの幅方向寸法をＤ×ｎ
＋1.5D以上、厚み方向寸法をＤ＋0.5D以上とし、テープ
型光ユニットの幅方向の一括被覆層の厚さをテープ型光
ユニットの厚み方向の一括被覆層の厚さよりも厚くした
構造とすることにより、幅方向の外力に対し良好な側圧
特性を備えたテープ型光ユニツト。DETAILED DESCRIPTION OF THE INVENTION [Outline of the Invention] n optical fiber strands having a diameter D in which two layers of a glass fiber are coated with an ultraviolet curable resin are arranged in a line, and a collective coating layer of the ultraviolet curable resin is provided on the outer periphery. In the tape type optical unit to be applied, the widthwise dimension of the tape type optical unit is D × n
+ 1.5D or more, the dimension in the thickness direction is D + 0.5D or more, and the thickness of the collective coating layer in the width direction of the tape type optical unit is made thicker than the thickness of the collective coating layer in the thickness direction of the tape type optical unit. As a result, a tape type optical unit with good lateral pressure characteristics against external force in the width direction.
本発明は光通信に用いる光ユニツトに関し、とくにガ
ラスフアイバに紫外線硬化型樹脂（以下UV樹脂とい
う。）を２層被覆した光フアイバ素線（以下UV素線とい
う。）を一列に配列し、外周をUV樹脂で一括被覆した構
造のテープ型光ユニツトに関するものである。The present invention relates to an optical unit used for optical communication, and in particular, an optical fiber wire (hereinafter, UV wire) in which a glass fiber is coated with two layers of an ultraviolet curable resin (hereinafter, UV resin) is arranged in a row, and the outer circumference is arranged. The present invention relates to a tape type optical unit having a structure in which all are collectively covered with UV resin.
テープ型光ユニツトは、第７図に示すように、ガラス
フアイバ１をUV樹脂による素線内層２および素線外層３
で２層に被覆したUV素線12を複数本一列に配列し、外周
にUV樹脂による一括被覆層４を施した構造を有してい
る。As shown in FIG. 7, the tape type optical unit comprises a glass fiber 1 and a strand inner layer 2 and a strand outer layer 3 made of UV resin.
In this structure, a plurality of UV wires 12 coated in two layers are arranged in a line, and a collective coating layer 4 made of UV resin is applied to the outer circumference.
第７図に示すような従来の構造のテープ型光ユニツト
は、５の厚み方向の外力（F1）に対しては、厚み方向の
外力（F1）５を各UV素線12が分担するので、UV素線12単
体に比較して強いと考えることができるが、６の幅方向
の外力（F2）に対しては、幅方向の外力（F2）６が直接
両端のUV素線12に加わるため、厚み方向の外力（F1）５
に比べると非常に弱く、テープ型光ケーブル製造時に加
わる幅方向の側圧力によつてテープ型光ユニツトの伝送
損失が増加し易いという欠点があつた。従来かかる欠点
を除去するため、UV素線自体の側圧特性を向上させる、
すなわち、素線内層２のヤング率を下げ、素線外層３の
ヤング率を上げる被覆材の採用とか、またはUV素線12の
径を大にする構造、あるいは一括被覆層４にヤング率の
大なる被覆材を適用する構成が試みられているが、ヤン
グ率を変化させる構成は、他の特性、たとえば温度特
性、作業性などの劣化を招く恐れがあり、UV素線の径を
変化させる構成は、テープ型光ユニツトの寸法が大きく
変つてしまうという問題点がある。In the tape type optical unit having the conventional structure as shown in FIG. 7, each UV strand 12 shares the external force (F 1 ) 5 in the thickness direction with respect to the external force (F 1 ) in the thickness direction of 5. Therefore, it can be considered that it is stronger than the UV strand 12 alone, but with respect to the external force (F 2 ) in the width direction of 6, the external force (F 2 ) 6 in the width direction is directly applied to the UV strands at both ends. External force in the thickness direction (F 1 ) 5
However, the transmission loss of the tape type optical unit is likely to increase due to the lateral pressure applied in the width direction during the production of the tape type optical cable. Conventionally, in order to eliminate such defects, the lateral pressure characteristic of the UV strand itself is improved,
That is, a coating material that lowers the Young's modulus of the wire inner layer 2 and raises the Young's modulus of the wire outer layer 3 is adopted, or the diameter of the UV wire 12 is increased, or the batch coating layer 4 has a large Young's modulus. However, a composition that changes the Young's modulus may cause deterioration of other characteristics, such as temperature characteristics and workability, and a composition that changes the diameter of the UV strands. However, there is a problem in that the dimensions of the tape type optical unit change greatly.
本発明は従来の欠点を解消し、問題点を解決して、幅
方向の外力に対しても良好な側圧特性を有するテープ型
光ユニツトを提供するため、ガラスフアイバに紫外線硬
化型樹脂を２層被覆した直径Ｄの光フアイバ素線をｎ本
一列に配列し、外周に紫外線硬化型樹脂による一括被覆
層を施したテープ型光ユニットにおいて、テープ型光ユ
ニットの幅方向寸法をＤ×ｎ＋1.5D以上、厚み方向寸法
をＤ＋0.5D以上とし、テープ型光ユニットの幅方向の一
括被覆層の厚さをテープ型光ユニットの厚み方向の一括
被覆層の厚さよりも厚くしたことを特徴とする。The present invention solves the conventional drawbacks, solves the problems, and provides a tape type optical unit having good lateral pressure characteristics against external force in the width direction. In a tape type optical unit in which n coated optical fiber wires of diameter D are arranged in a line and a collective coating layer of ultraviolet curable resin is applied on the outer circumference, the width direction dimension of the tape type optical unit is D × n + 1.5D As described above, the dimension in the thickness direction is set to D + 0.5D or more, and the thickness of the collective covering layer in the width direction of the tape type optical unit is made thicker than the thickness of the collective covering layer in the thickness direction of the tape type optical unit.
従来の、被覆層のヤング率を変化することによる温度
特性，作業性の劣化、UV素線径を変化することによるテ
ープ型光ユニツトの寸法の大形化という問題の生起する
ことなく、幅方向の外力に対して良好な側圧特性を備え
たテープ型光ユニツトの構造を決定するために、有限要
素法による応力解析を利用した。第３図に本発明に係る
テープ型光ユニツトの応力解析モデルの構造を示す。第
７図と同じ符号は同じ部分を示す。７は一括被覆層４の
幅（Ｗ）、８は厚み（ｔ）である。一例として、UV素線
12の直径Ｄ＝0.2mmφ、本数ｎ＝10、一括被覆層４の寸
法を、７の幅Ｗ＝2.1mm、８の厚みｔ＝0.25mmとして解
析を行つた。なお素線内層２および素線外層３のヤング
率はそれぞれ0.1kg/mm2および50kg/mm2、一括被覆層の
ヤング率は50kg/mm2である。以下解析結果について説明
する。In the width direction, the conventional temperature characteristics and workability are deteriorated by changing the Young's modulus of the coating layer, and the size of the tape type optical unit is increased by changing the diameter of the UV strands. In order to determine the structure of the tape-type optical unit with good lateral pressure characteristics against the external force of, the stress analysis by the finite element method was used. FIG. 3 shows the structure of the stress analysis model of the tape type optical unit according to the present invention. The same reference numerals as those in FIG. 7 indicate the same parts. 7 is the width (W) of the collective coating layer 4, and 8 is the thickness (t). As an example, UV strands
The analysis was performed with 12 diameters D = 0.2 mmφ, the number n = 10, and the dimensions of the collective coating layer 4 as 7 width W = 2.1 mm and 8 thickness t = 0.25 mm. The Young's modulus of the inner wire layer 2 and the outer wire layer 3 are 0.1 kg / mm 2 and 50 kg / mm 2 , respectively, and the Young's modulus of the collective coating layer is 50 kg / mm 2 . The analysis results will be described below.
第４図に、幅方向に外力（F2）として1kg/mmをテープ
型光テープの応力解析モデルに加えた際の各UV素線12中
のガラスフアイバ１に発生する最大応力の値を示す。第
４図から解るように、UV素線列の幅方向外力（F2）の加
わる端部のUV素線に発生する応力は、内側のUV素線に発
生する応力に比べて１桁程度大きく、端部のUV素線に発
生する応力を小さくすれば、それに応じて内側のUV素線
に発生する応力も小さくなり、テープ型光ユニツトの幅
方向外力に対する側圧特性の良好になることが予測され
る。このため、端部のUV素線に発生する応力に注目し、
解析を行つた。一括被覆層の寸法を、幅Ｗ＝2.0mm（＝1
0D）、厚みｔ＝0.2mm（＝Ｄ）のときに端部のUV素線に
発生する最大応力をσ0とし、幅W,厚みｔを変化させた
ときに発生する最大応力σとの比σ／σ0を求めた。そ
の結果を第１図に示す。第１図より幅Ｗだけを大きくし
ても、応力比σ／σ0は大きく減少することはなく、厚
みｔに依存することが解る。幅Ｗに関しては、Ｗ＝11.5
D（＝2.3mm）以上、厚みについては、ｔ＝1.5D（＝0.3m
m）以上あれば、応力比σ／σ0の減少は殆んど幅W,厚み
ｔに依存しなくなるといえる。すなわち、UV素線列の寸
法の幅Ｗ′＝10D（＝2.0mm）、厚みｔ′＝Ｄ（＝0.2m
m）より、一括被覆層４の幅Ｗを幅方向に1.5D（＝11.5D
−10D）、厚みｔを厚み方向にD/2（＝1.5D−Ｄ）以上寸
法を大きくすることによつて、幅方向の外力に対して側
圧特性が良好となることが予測できる。また、この解析
結果は、第２図に示すように、UV素線径Ｄが小さいほど
顕著にあらわされる傾向があるが、UV素線径Ｄが大きく
なつても正しいことが確認されている。なお、テープ型
光ユニットはテープ型光ケーブルを構成した場合、光フ
ァイバの収容占積率を向上させることを目的としている
ので、一括被覆層の厚さは大きければ大きいほど良いと
いうものではなく、上述のテープ型光ユニットの寸法範
囲内でなるべく小さく設計する。以下実施例について説
明する。Fig. 4 shows the maximum stress value generated in the glass fiber 1 in each UV strand 12 when 1 kg / mm as an external force (F 2 ) in the width direction is applied to the stress analysis model of the tape type optical tape. . As can be seen from Fig. 4, the stress generated in the UV strand at the end where the widthwise external force (F 2 ) of the UV strand is applied is about one digit larger than the stress generated in the inner UV strand. By reducing the stress generated on the UV strands at the ends, the stress generated on the inner UV strands will be reduced accordingly, and it is predicted that the lateral pressure characteristics of the tape-type optical unit with respect to the external force in the width direction will be improved. To be done. Therefore, pay attention to the stress generated in the UV strand at the end,
Analyzed. Width W = 2.0 mm (= 1
0D) and the thickness t = 0.2 mm (= D), the maximum stress generated in the UV wire at the end is σ 0 , and the ratio with the maximum stress σ generated when the width W and the thickness t are changed. σ / σ 0 was calculated. The results are shown in FIG. It can be seen from FIG. 1 that the stress ratio σ / σ 0 does not greatly decrease even if only the width W is increased, and depends on the thickness t. Regarding the width W, W = 11.5
For D (= 2.3 mm) or more and thickness, t = 1.5 D (= 0.3 m)
It can be said that the stress ratio σ / σ 0 is almost independent of the width W and the thickness t as long as it is at least m). That is, the width of the UV strands is W '= 10D (= 2.0mm) and the thickness t' = D (= 0.2m).
m), the width W of the collective coating layer 4 is 1.5D (= 11.5D) in the width direction.
-10D), and by increasing the thickness t by D / 2 (= 1.5D-D) or more in the thickness direction, it can be predicted that the lateral pressure characteristics will be favorable with respect to the external force in the width direction. Further, as shown in FIG. 2, this analysis result tends to be more prominent as the UV filament diameter D becomes smaller, but it has been confirmed to be correct even when the UV filament diameter D becomes large. When the tape-type optical unit is a tape-type optical cable, it is intended to improve the space factor of the optical fiber. Therefore, the larger the thickness of the collective coating layer is, the better it is. Design as small as possible within the size range of the tape type optical unit. Examples will be described below.
第５図ＡおよびＢに従来型および本発明の10心テープ
型光ユニツトの試作例の断面構造を示す。第５図Ａは従
来型の10心テープ型光ユニツトで、寸法は2.2mm（11D）
×0.25mm、第５図Ｂは本発明による幅広の10心テープ型
光ユニツトで、寸法は、2.4mm（12D）×0.3mm（1.5D）
である。なおUV素線の構造は同一で、径は0.2mmφであ
る。すなわち本発明はUV素線列に対し、幅方向に2D（＝
12D−10D）、厚み方向にD/2（＝1.5D−Ｄ）大きい一括
被覆層の寸法で、従来型はそれぞれ幅方向に1D（＝11D
−10D）、厚み方向にD/4（＝1.25D−Ｄ）大きい一括被
覆層の寸法である。FIGS. 5A and 5B show cross-sectional structures of a prototype of the conventional type and the 10-core tape type optical unit of the present invention. Fig. 5A shows a conventional 10-core tape type optical unit with dimensions of 2.2 mm (11D).
× 0.25 mm, Fig. 5B is a wide 10-core tape type optical unit according to the present invention, and the dimensions are 2.4 mm (12D) × 0.3 mm (1.5D).
Is. The structure of the UV strands is the same and the diameter is 0.2 mmφ. That is, the present invention uses a 2D (=
12D-10D), the size of the collective coating layer is D / 2 (= 1.5D-D) larger in the thickness direction, and the conventional type has 1D (= 11D) in the width direction.
-10D), and the dimension of the collective coating layer is D / 4 (= 1.25D-D) larger in the thickness direction.
第６図に、試作した従来型および本発明による10心テ
ープ型光ユニツト11および10について幅方向の外力
（F2）６に対する側圧特性の測定結果をそれぞれIIおよ
びＩで示す。なお９はテープ型光ユニツトに設けたロス
モニタである。第６図から明らかなように、本発明によ
る幅広のテープ型光ユニツトは、従来型のテープ型光ユ
ニツトに比較して、幅方向外力に対し1/4以下の損失増
しか発生せず、本発明の有効性が確認された。FIG. 6 shows the measurement results of the lateral pressure characteristics with respect to the external force (F 2 ) 6 in the width direction of the prototyped conventional type and the 10-core tape type optical units 11 and 10 according to the present invention, respectively. Reference numeral 9 is a loss monitor provided in the tape type optical unit. As is clear from FIG. 6, the wide tape type optical unit according to the present invention produces a loss increase of 1/4 or less with respect to the external force in the width direction as compared with the conventional tape type optical unit. The effectiveness of the invention was confirmed.
以上述べたように、本発明はテープ型光ユニツトの寸
法を、幅方向寸法はＤ×ｎ＋1.5D以上、厚み方向寸法は
Ｄ＋0.5D以上とし、テープ型光ユニットの幅方向の一括
被覆層の厚さをテープ型光ユニットの厚み方向の一括被
覆層の厚さよりも厚くした構造とすることにより、幅方
向の外力に対しUV被覆光ファイバ素線の損失増を従来型
のテープ型光ユニツトに比し1/4以下に抑えることがで
きる。As described above, according to the present invention, the dimensions of the tape type optical unit are such that the dimension in the width direction is D × n + 1.5D or more and the dimension in the thickness direction is D + 0.5D or more. By making the thickness thicker than the thickness of the collective coating layer in the thickness direction of the tape type optical unit, the loss increase of the UV coated optical fiber strand against the external force in the width direction can be changed to the conventional tape type optical unit. It can be suppressed to 1/4 or less.
第１図は本発明のテープ型光ユニツトの構成を説明する
両端の光フアイバに発生する応力比と幅・厚みとの関係
を示す図、第２図は本発明のテープ型光ユニツトの構成
を説明するUV素線径を変えた場合の応力比と幅との関係
を示す図、第３図は本発明に係るテープ型光ユニツトの
応力解析モデル、第４図は幅方向に外力が加わつた際に
生ずる応力解析モデルの各UV素線の最大応力解析結果、
第５図ＡおよびＢは従来型および本発明の10心テープ型
光ユニツト例の断面構造、第６図は従来型および本発明
の10心テープ型光ユニツトの側圧特性、第７図は従来の
テープ型光ユニツトの断面構造および外力のかかる状態
図である。 １……ガラスフアイバ、２……素線内層、３……素線外
層、４……一括被覆層、５……厚み方向外力、６……幅
方向外力、７……幅（Ｗ）、８……厚み（ｔ）、９……
ロスモニタ、10……本発明テープ型光ユニツト、11……
従来テープ型光ユニツト、12……UV素線FIG. 1 is a diagram for explaining the structure of the tape type optical unit of the present invention, showing the relationship between the stress ratio generated in the optical fibers at both ends and the width / thickness, and FIG. 2 is the structure of the tape type optical unit of the present invention. FIG. 3 is a diagram showing the relationship between the stress ratio and the width when the UV wire diameter is changed, FIG. 3 is a stress analysis model of the tape type optical unit according to the present invention, and FIG. 4 is an external force applied in the width direction. The maximum stress analysis result of each UV strand of the stress analysis model generated at the time of
5A and 5B are cross-sectional structures of the conventional type and the 10-core tape type optical unit of the present invention, FIG. 6 is the lateral pressure characteristics of the conventional type and the 10-core tape type optical unit of the present invention, and FIG. 7 is the conventional type. It is a sectional view of a tape type optical unit and a state diagram to which an external force is applied. 1 ... Glass fiber, 2 ... Element inner layer, 3 ... Element outer layer, 4 ... Collective coating layer, 5 ... Thickness direction external force, 6 ... Width direction external force, 7 ... Width (W), 8 …… Thickness (t), 9 ……
Loss monitor, 10 ... Tape type optical unit of the present invention, 11 ...
Conventional tape type optical unit, 12 …… UV element
フロントページの続き (72)発明者 小笠原 一郎 横浜市戸塚区田谷町１番地 住友電気工 業株式会社横浜製作所内 (72)発明者 田中 茂 横浜市戸塚区田谷町１番地 住友電気工 業株式会社横浜製作所内 (72)発明者 鈴木 修三 横浜市戸塚区田谷町１番地 住友電気工 業株式会社横浜製作所内 (56)参考文献 特開 昭60−254010（ＪＰ，Ａ) 特開 昭61−5211（ＪＰ，Ａ)Front page continuation (72) Inventor Ichiro Ogasawara 1 Taya-cho, Totsuka-ku, Yokohama-shi Sumitomo Electric Industries, Ltd. Yokohama Works (72) Inventor Shigeru Tanaka 1 Taya-cho, Totsuka-ku, Yokohama Sumitomo Electric Industries Yokohama In-house (72) Inventor Shuzo Suzuki, 1 Taya-cho, Totsuka-ku, Yokohama City In-house Yokohama Works (56) References JP-A-60-254010 (JP, A) JP-A-61-5211 (JP) , A)
Claims (1)
被覆した直径Ｄの光ファイバ素線ｎ本を一列に配列し、
その外周に紫外線硬化型樹脂による一括被覆層を施して
なるテープ型光ユニットにおいて、 前記テープ型光ユニットの幅方向寸法をＤ×ｎ＋1.5D以
上、厚み方向寸法をＤ＋0.5D以上とし、テープ型光ユニ
ットの幅方向の一括被覆層の厚さをテープ型光ユニット
の厚み方向の一括被覆層の厚さよりも厚くしたことを特
徴とするテープ型光ユニット。1. N optical fiber strands having a diameter D in which two layers of glass fibers are coated with an ultraviolet curable resin are arranged in a line.
A tape type optical unit having a collective coating layer of an ultraviolet curable resin on its outer periphery, wherein the tape type optical unit has a widthwise dimension of D × n + 1.5D or more and a thicknesswise dimension of D + 0.5D or more. A tape type optical unit characterized in that the thickness of the collective covering layer in the width direction of the optical unit is made thicker than the thickness of the collective covering layer in the thickness direction of the tape type optical unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61007626A JP2525766B2 (en) | 1986-01-17 | 1986-01-17 | Tape type optical unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61007626A JP2525766B2 (en) | 1986-01-17 | 1986-01-17 | Tape type optical unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62165612A JPS62165612A (en) | 1987-07-22 |
| JP2525766B2 true JP2525766B2 (en) | 1996-08-21 |
Family
ID=11671030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61007626A Expired - Lifetime JP2525766B2 (en) | 1986-01-17 | 1986-01-17 | Tape type optical unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2525766B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6423010U (en) * | 1987-07-29 | 1989-02-07 | ||
| JPH0197909A (en) * | 1987-10-09 | 1989-04-17 | Mitsubishi Cable Ind Ltd | Optical fiber tape |
| JPH03209207A (en) * | 1990-01-12 | 1991-09-12 | Furukawa Electric Co Ltd:The | Optical fiber of multifiber tape |
| JP2007058206A (en) * | 2005-07-28 | 2007-03-08 | Furukawa Electric Co Ltd:The | Optical fiber ribbon and optical fiber tape unit |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0627887B2 (en) * | 1984-05-23 | 1994-04-13 | 住友電気工業株式会社 | Fiber for optical transmission |
| JPS615211A (en) * | 1984-06-19 | 1986-01-11 | Furukawa Electric Co Ltd:The | Production for optical tape-type unit |
-
1986
- 1986-01-17 JP JP61007626A patent/JP2525766B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62165612A (en) | 1987-07-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |