JPH01209412A - Division type optical fiber unit - Google Patents
Division type optical fiber unitInfo
- Publication number
- JPH01209412A JPH01209412A JP63034690A JP3469088A JPH01209412A JP H01209412 A JPH01209412 A JP H01209412A JP 63034690 A JP63034690 A JP 63034690A JP 3469088 A JP3469088 A JP 3469088A JP H01209412 A JPH01209412 A JP H01209412A
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- unit
- fiber unit
- curable resin
- ultraviolet curable
- 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
- 239000013307 optical fiber Substances 0.000 title claims abstract description 64
- 239000011347 resin Substances 0.000 claims abstract description 29
- 229920005989 resin Polymers 0.000 claims abstract description 29
- 239000011248 coating agent Substances 0.000 abstract description 9
- 238000000576 coating method Methods 0.000 abstract description 9
- 238000000926 separation method Methods 0.000 abstract description 4
- 238000003491 array Methods 0.000 abstract 2
- 239000000835 fiber Substances 0.000 description 15
- 230000005540 biological transmission Effects 0.000 description 10
- 230000003287 optical effect Effects 0.000 description 7
- 238000009434 installation Methods 0.000 description 4
- 238000004220 aggregation Methods 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009291 secondary effect Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
- G02B6/4431—Protective covering with provision in the protective covering, e.g. weak line, for gaining access to one or more fibres, e.g. for branching or tapping
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は分離型光ファイバユニットに関し、とくに光加
入者システムの伝送路に使用する光ケーブルを形成する
光ファイバユニットに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a split-type optical fiber unit, and particularly to an optical fiber unit forming an optical cable used in a transmission line of an optical subscriber system.
従来、この種の分離型光ファイバユニットとしては、た
とえば径が２５０ｍｍφの紫外線硬化型樹脂被覆光ファ
イバ（以下ＵＶ光ファイバと云う。Conventionally, as this type of separated optical fiber unit, for example, an ultraviolet curable resin coated optical fiber (hereinafter referred to as UV optical fiber) having a diameter of 250 mm is used.
）を、複数心二次元状に、すなわち−列にテープ状に配
列し、ヤング率が２０Ｋｇ／ｍｍ”以上の高ヤング率紫
外線硬化型樹脂により一括被覆を施した、所謂光フアイ
バテープユニットが用いられている。) are arranged in a two-dimensional shape, that is, in a tape-like manner, and are collectively coated with a high Young's modulus ultraviolet curable resin having a Young's modulus of 20 kg/mm or more. It is being
従来のこの種の光フアイバテープユニットは、テープ状
に一括被覆を施す構造であることから、ヤング率の高い
、たとえば２０Ｋｇ／ｍｍ”の紫外線硬化型樹脂を適用
し、また少くとも４心乃至５心以上の多心のＵＶ光ファ
イバが一括被覆された構造であるため、端末処理を行う
ときの一心ごとの分離が困難で、取り扱いが繁雑となり
作業性が悪いという問題がある。さらに光加入者システ
ムの伝送路を構成する加入者光ケーブル網においては、
光加入者システムの構成単位が２心構成であり、ケーブ
ル布設において、途中分岐の際にも２心構底置位ごと容
易に取り出せることが必要となってきている。Conventional optical fiber tape units of this kind have a structure in which the tape is coated all at once, so UV-curable resin with a high Young's modulus, for example, 20 kg/mm, is used, and at least 4 to 5 fibers are used. Because it has a structure in which UV optical fibers with more than one core are coated all at once, it is difficult to separate each fiber during terminal processing, resulting in complicated handling and poor workability.Furthermore, optical subscriber In the subscriber optical cable network that constitutes the transmission path of the system,
The structural unit of an optical subscriber system is a two-fiber configuration, and in cable installation, it has become necessary to be able to easily take out the two-fiber structure at its bottom position even when branching midway.
本発明は従来の問題点を解決し、途中分岐に際し、必要
心数の構成単位ごと容易に取り出せる、作業性に優れ、
かつ加えて耐側圧性にも優れた分離型光ファイバユニッ
トを提供実ることを目的とするものである。The present invention solves the conventional problems, and when branching in the middle, it is easy to take out each constituent unit of the required number of cores, and has excellent workability.
In addition, it is an object of the present invention to provide a separate optical fiber unit that has excellent lateral pressure resistance.
〔課題を解決するための手段〕
本発明の分離型光ファイバユニットは、上記の目的を達
成するため、複数心のＵＶ光ファイバの配列を、ヤング
率が０．０５Ｋｇ／ｍｍ” 〜１０Ｋｇ／ｍｍ”の紫外
線硬化型樹脂により、円形断面状に集合し、一括被覆を
施した構造を備えていることを特徴としている。[Means for Solving the Problems] In order to achieve the above-mentioned object, the separable optical fiber unit of the present invention arranges a plurality of UV optical fibers with a Young's modulus of 0.05 Kg/mm" to 10 Kg/mm. It is characterized by having a structure in which it is assembled into a circular cross-section and covered all at once using ultraviolet curable resin.
また本発明には、一般に用いられている径２５０ｍｍφ
のＵＶ光ファイバを適用して有効であり、さらに−ユニ
ットは光加入者システムの伝送路用として２心ユニツト
構成、あるいは３心ユニツト構成とすることにより、実
用上有効である。The present invention also uses a commonly used diameter of 250 mmφ.
The present invention is effective when a UV optical fiber is applied, and furthermore, it is practically effective when the unit is configured as a two-fiber unit or a three-fiber unit for the transmission line of an optical subscriber system.
本発明の分離型光ファイバユニットは、光ファイバの集
合体を一括被覆する紫外線硬化型樹脂が０．０５Ｋｇ／
ｍｍ” 〜１０Ｋｇ／ｍｍ”の低ヤング率であることか
ら、ケーブル布設時のＵＶ光ファイバの分岐に際し、一
括被覆の紫外線硬化型樹脂の除去、およびたとえば径２
５０ｍｍφＵＶ光ファイバ相互の分離が容易かつ安定、
確実に行うことができる。In the separate optical fiber unit of the present invention, the amount of ultraviolet curable resin that collectively coats the optical fiber assembly is 0.05 kg/
Due to its low Young's modulus of 10 Kg/mm" to 10 Kg/mm", when branching UV optical fibers during cable installation, it is necessary to remove the UV curable resin from the bulk coating and, for example, to
Easy and stable separation of 50mmφ UV optical fibers from each other.
It can be done reliably.
また、任意心数の光ファイバユニットを構成できること
から、用途や必要心数に応じた分離型光ファイバユニッ
トをタイト構造の集合体とした光フアイバケーブル、或
いはルースチューブ内に収納したルース構造の集合体と
した光フアイバケーブルに適宜適用できる。以下図面に
もとづき実施例について説明する。In addition, since it is possible to configure an optical fiber unit with any number of fibers, it is possible to create an optical fiber cable that is a tight structure assembly of separate optical fiber units depending on the application and required number of fibers, or a loose structure assembly that is housed in a loose tube. It can be applied appropriately to optical fiber cables that have a body. Examples will be described below based on the drawings.
第１図ａ、ｂに本発明に係る光ファイバユニットの実施
例の断面構造を示す。第１図ａは１のＵＶ光フアイバ２
心に、低ヤング率の紫外線硬化型樹脂被覆（以下ＵＶ樹
脂被覆と云う。）１０を円形断面状に施した２心ユニツ
ト２ｏである。また第１図すは、１のＵＶ光フアイバ３
心に、ＵＶ樹脂被覆１０を円形断面状に施した３心ユニ
ツト３０の例である。本実施例におけるＵＶ光フアイバ
１は、通常一般北加入者系伝送路に用いられている径２
５０ｍｍφのＵＶ光ファイバを使用した。FIGS. 1a and 1b show a cross-sectional structure of an embodiment of an optical fiber unit according to the present invention. Figure 1a shows 1 UV optical fiber 2
This is a two-core unit 2o in which a low Young's modulus ultraviolet curable resin coating (hereinafter referred to as UV resin coating) 10 is applied to the core in a circular cross-section. In addition, Fig. 1 shows the UV optical fiber 3 of 1.
This is an example of a three-core unit 30 in which a UV resin coating 10 is applied to the core in a circular cross-section. The UV optical fiber 1 in the present embodiment has a diameter of 2
A UV optical fiber with a diameter of 50 mm was used.
第２図ａ、ｂ、ｃはそれぞれ本発明の分離型光ファイバ
ユニットを用いた光ファイバユニット集合体の実施例の
断面構造である。FIGS. 2a, 2b, and 2c each show a cross-sectional structure of an embodiment of an optical fiber unit assembly using the separable optical fiber unit of the present invention.
第２図ａおよび第２図すは、それぞれ、２心ユニツト２
０を中心抗張力体２の外周に６木集合し、たとえばナイ
ロンを押出し外被３を施したタイト構造の集合体Ａ２１
、および３心ユニツト３０を中心抗張力体２の外周に６
木集合し、たとえばナイロンを押出し外被３を施したタ
イト構造の集合体Ｂ２２である。FIG. 2a and FIG. 2A respectively show the two-core unit 2.
An assembly A21 with a tight structure in which 6 trees are assembled around the outer periphery of the tensile strength member 2 with 0 as the center, and an outer covering 3 made of extruded nylon, for example.
, and a three-core unit 30 is placed 6 on the outer periphery of the central tensile strength member 2.
This is an assembly B22 of a tight structure made of wood, for example, extruded nylon and coated with a jacket 3.
また第２図Ｃは、２心ユニツト２０または３心ユニツト
３０を、たとえばＰＢＴのルースチューブ３１内に、６
本ルース状態で収納したルース構造の集合体Ｃ２３であ
る。なおルースチューブ３１内はジエリまたは空気４を
満たしである。Further, FIG. 2C shows that the two-core unit 20 or the three-core unit 30 is placed in a loose tube 31 made of PBT, for example.
This is an aggregate C23 with a loose structure stored in a loose state. Note that the inside of the loose tube 31 is filled with gas or air 4.
第３図は、第２図ａ乃至Ｃに示した光ファイバユニット
２１，２２．２３の集合体Ａ１集合体Ｂ、集合体Ｃのい
ずれか任意の集合体の光ファイバユニット集合体４０を
適宜中心抗張力体４１の外周に撚り合わせ、押え巻４２
を施した外周に外被４３を被覆した本発明に係る光ファ
イバユニットを収納した光フアイバケーブル完成品の実
施例の断面図である。FIG. 3 is centered on the optical fiber unit assembly 40 of any one of the optical fiber units 21, 22, and 23 aggregates A1, B, and C shown in FIGS. 2A to C. Twisted around the outer periphery of the tensile strength body 41, presser winding 42
FIG. 3 is a cross-sectional view of an embodiment of a completed optical fiber cable housing an optical fiber unit according to the present invention whose outer periphery is coated with a jacket 43.
なお第２図ａ、ｂおよびＣに示した本発明の２心ユニツ
ト、３心ユニツトをタイト構造で形成した集合体Ａ、集
合体Ｂ、およびルース構造で形成した集合体Ｃにおける
２心ユニツトおよび３心ユニツトの一括被覆には、ヤン
グ率が０．０５Ｋｇ／ｍｍ”の紫外線硬化型樹脂を用い
たところ、３Ｍファイバの１．５５μｍにおける伝送損
失の増加は０．００５ｄＢ／Ｋｍ以内と良好な伝送特性
を得ることができた。またヤング率が１０Ｋｇ／ｍ ｍ
”の紫外線硬化型樹脂を用いて２心ユニツトおよび３
心ユニツトの一括被覆を施し、同様に集合体Ａ、集合体
Ｂ、および集合体Ｃを作製し伝送特性を測定したところ
３Ｍファイバの１．５５μｍにおける伝送損失の増加は
０．０１ｄＢ／Ｋｍ以内と良好な結果が得られた。In addition, the two-core units and the two-core units in the aggregates A and B, which are formed of two-core units and three-core units of the present invention in a tight structure, and the aggregate C, which is formed in a loose structure, shown in FIGS. 2a, b, and C. When we used an ultraviolet curable resin with a Young's modulus of 0.05 Kg/mm to cover the 3-fiber unit, the increase in transmission loss at 1.55 μm of 3M fiber was within 0.005 dB/Km, resulting in good transmission. In addition, the Young's modulus was 10 kg/m m
2-core unit and 3-core unit using ultraviolet curable resin
When the core unit was coated all at once, aggregates A, B, and C were fabricated in the same manner and their transmission characteristics were measured, the increase in transmission loss at 1.55 μm of 3M fiber was within 0.01 dB/Km. Good results were obtained.
これに対し、゛２心ユニットおよび３心ユニツトの一括
被覆に２０Ｋｇ／ｍｍ”のヤング率を有する紫外線硬化
型樹脂を用いた場合、タイト構造の集合体Ａおよび集合
体Ｂは、３Ｍファイバの１゜５５μｍにおける伝送損失
の増加が平均０．１０ｄ Ｂ ／ Ｋ ｍ明らかに伝送
損失の増大が認められた。On the other hand, when an ultraviolet curable resin having a Young's modulus of 20 Kg/mm is used to collectively coat the 2-fiber unit and the 3-fiber unit, the tight-structured aggregates A and B are The average increase in transmission loss at 55 μm was 0.10 dB/K m.A clear increase in transmission loss was observed.
以上説明したように、本発明の分離型光ファイバユニッ
トは、複数心のＵＶ光ファイバをヤング率が０．０５Ｋ
ｇ／ｍｍ” 〜１０Ｋｇ／ｍｍ”の低ヤング率紫外線硬
化型樹脂で、円形断面状に一括被覆を施す構造であるこ
とから、収納するＵＶ光ファイバの分離性が大きく向上
した。とくにＵＶ光ファイバとして通常一般に使用され
る径２５ＱｍｍφのＵＶ光ファイバを用い、かつ、ユニ
ット単位を２心ユニツトまたは３心ユニツト構成とする
ことにより、加入者システムの光伝送路網を形成する光
フアイバケーブルに適用して、ケーブル布設時および布
設後の途中分岐および後分岐に際して、取り扱いが容易
、安定、確実となり有利である。As explained above, the separation type optical fiber unit of the present invention has a multi-core UV optical fiber with a Young's modulus of 0.05K.
Since it has a structure in which a circular cross section is coated all at once with a low Young's modulus ultraviolet curable resin of 10 kg/mm" to 10 kg/mm", the separation of the UV optical fibers to be housed is greatly improved. In particular, by using a UV optical fiber with a diameter of 25 Qmmφ, which is commonly used as a UV optical fiber, and by configuring each unit as a two-fiber unit or a three-fiber unit, an optical fiber that forms an optical transmission line network of a subscriber system is developed. When applied to cables, it is advantageous because handling is easy, stable, and reliable during cable installation, midway branching, and subsequent branching after cable installation.
さらに、光ファイバユニットの一括被覆が低ヤング率の
紫外線硬化型樹脂を適用していることから、本発明に係
る光ファイバユニットを集合して光フアイバケーブルを
作製した場合、光ファイバユニットの集合体においてク
ツション効果を有し、耐側圧性に優れるという副次的効
果も有する。Furthermore, since the collective coating of the optical fiber units is applied with an ultraviolet curable resin having a low Young's modulus, when the optical fiber units according to the present invention are assembled to produce an optical fiber cable, the assembly of optical fiber units It also has the secondary effect of having a cushioning effect and being excellent in lateral pressure resistance.
第１図はａ、ｂは本発明に係る光ファイバユニット実施
例断面図、第２図ａ、ｂ、ｃは本発明に係る光ファイバ
ユニット集合体実施例断面図、第３図は本発明に係る光
ファイバユニット収納光フアイバケーブル実施例断面図
である。
１・・・ＵＶ光ファイバ、２・・・中心抗張力体、３・
・・外被、４・・・ジエリまたは空気、１０・・・低ヤ
ング率ＵＶ樹脂被覆、２０・・・２心ユニツト、３０・
・・３心ユニツト、２１・・・集合体Ａ１２２・・・集
合体Ｂ、 ２３・・・集合体Ｃ１３１・・・ルースチュ
ーブ、４０・・・光ファイバユニット集合体、４１・・
・中心抗張力体、４２・・・押え巻、°４３・・・外被
特許出願人 住友電気工業株式会社
代理人 弁理士 玉 蟲 久五部1A and 1B are cross-sectional views of an embodiment of an optical fiber unit according to the present invention, FIGS. 2A, B, and C are sectional views of an embodiment of an optical fiber unit assembly according to the present invention, and FIG. It is a sectional view of an example of such an optical fiber unit-accommodating optical fiber cable. 1... UV optical fiber, 2... central tensile strength body, 3...
...Outer cover, 4...Gel or air, 10...Low Young's modulus UV resin coating, 20...2-core unit, 30...
...Three-core unit, 21...Aggregation A122...Aggregation B, 23...Aggregation C131...Loose tube, 40...Optical fiber unit assembly, 41...
・Central tensile strength body, 42...Pressure winding, °43...Outer cover Patent applicant Sumitomo Electric Industries Co., Ltd. Agent Patent attorney Kugobe Tamamushi
Claims (4)
・集合し、紫外線硬化型樹脂により一括被覆した分離型
光ファイバユニットにおいて、前記複数心の紫外線硬化
型樹脂被覆光ファイバの配列を、 ヤング率が０．０５Ｋｇ／ｍｍ＾２〜１０Ｋｇ／ｍｍ＾
２の紫外線硬化型樹脂により、 円形断面状に集合し、一括被覆を施した構造を備えてな
る ことを特徴とする分離型光ファイバユニット。(1) In a separate optical fiber unit in which a plurality of ultraviolet curable resin-coated optical fibers are arranged and assembled and collectively coated with an ultraviolet curable resin, the arrangement of the plurality of ultraviolet curable resin-coated optical fibers is Rate is 0.05Kg/mm^2~10Kg/mm^
A separate type optical fiber unit characterized in that it has a structure in which the ultraviolet curing resin of No. 2 is assembled into a circular cross section and is collectively coated.
０ｍｍφの紫外線硬化型樹脂被覆光ファイバからなるこ
とを特徴とする特許請求の範囲第１項記載の分離型光フ
ァイバユニット。(2) The ultraviolet curable resin-coated optical fiber has a diameter of 25 mm.
The separable optical fiber unit according to claim 1, characterized in that it is made of an ultraviolet curable resin-coated optical fiber having a diameter of 0 mm.
２心からなることを特徴とする特許請求の範囲第１項記
載の分離型光ファイバユニット。(3) The separable optical fiber unit according to claim 1, wherein the multi-core ultraviolet curable resin-coated optical fiber consists of two cores.
３心からなることを特徴とする特許請求の範囲第１項記
載の分離型光ファイバユニット。(4) The separable optical fiber unit according to claim 1, wherein the multi-core ultraviolet curable resin-coated optical fiber consists of three cores.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63034690A JPH01209412A (en) | 1988-02-17 | 1988-02-17 | Division type optical fiber unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63034690A JPH01209412A (en) | 1988-02-17 | 1988-02-17 | Division type optical fiber unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01209412A true JPH01209412A (en) | 1989-08-23 |
Family
ID=12421379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63034690A Pending JPH01209412A (en) | 1988-02-17 | 1988-02-17 | Division type optical fiber unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01209412A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005109063A1 (en) * | 2004-05-11 | 2005-11-17 | Sumitomo Electric Industries, Ltd. | Optical fiber unit, optical cable, and optical fiber extracting method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6147912A (en) * | 1984-08-14 | 1986-03-08 | Kokusai Denshin Denwa Co Ltd <Kdd> | Fiber unit for optical submarine cable |
| JPS6247008A (en) * | 1985-08-24 | 1987-02-28 | Ocean Cable Co Ltd | Optical fiber unit |
-
1988
- 1988-02-17 JP JP63034690A patent/JPH01209412A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6147912A (en) * | 1984-08-14 | 1986-03-08 | Kokusai Denshin Denwa Co Ltd <Kdd> | Fiber unit for optical submarine cable |
| JPS6247008A (en) * | 1985-08-24 | 1987-02-28 | Ocean Cable Co Ltd | Optical fiber unit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005109063A1 (en) * | 2004-05-11 | 2005-11-17 | Sumitomo Electric Industries, Ltd. | Optical fiber unit, optical cable, and optical fiber extracting method |
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