JPH08262292A - Coated optical fiber ribbon and optical cable formed by using the same - Google Patents
Coated optical fiber ribbon and optical cable formed by using the sameInfo
- Publication number
- JPH08262292A JPH08262292A JP7066315A JP6631595A JPH08262292A JP H08262292 A JPH08262292 A JP H08262292A JP 7066315 A JP7066315 A JP 7066315A JP 6631595 A JP6631595 A JP 6631595A JP H08262292 A JPH08262292 A JP H08262292A
- Authority
- JP
- Japan
- Prior art keywords
- thickness
- optical fiber
- coating layer
- tape core
- core wire
- 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
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、スロットロッドなどの
収容体に収容して光ケーブルを構成するのに好適な光フ
ァイバテープ心線およびこれを用いた光ケーブルに関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical fiber tape core wire suitable for being housed in a housing such as a slot rod to form an optical cable, and an optical cable using the same.
【0002】[0002]
【従来の技術】現在、収容心線数が1000心を超える
加入者光ケーブルが開発されている。このような光ケー
ブルとしては、図2に示すような構造のものが提案され
ている。この光ケーブル1は、いわゆるスロット型のも
ので、スロットロッド2の外周面に形成された複数の螺
旋状のスロット溝3内に、光ファイバテープ心線(以
下、テープ心線と略記する)4が複数枚重ねられた状態
で収容されている。スロットロッド2はポリエチレンな
どのプラスチックからなる長尺体で、その中心には金属
撚線や繊維強化プラスチック(FRP)ロッドなどから
なるテンションメンバ5が設けられている。また、スロ
ットロッド2の周上にはポリエステルテープなどのテー
プを巻回したテープ巻回層6が設けられ、この上にポリ
塩化ビニルなどからなるシース7が被覆されている。2. Description of the Related Art At present, subscriber optical cables having a capacity of more than 1000 fibers have been developed. As such an optical cable, a structure having a structure as shown in FIG. 2 has been proposed. This optical cable 1 is of a so-called slot type, and an optical fiber tape core wire (hereinafter abbreviated as tape core wire) 4 is provided in a plurality of spiral slot grooves 3 formed on an outer peripheral surface of a slot rod 2. It is housed in a state where multiple sheets are stacked. The slot rod 2 is a long body made of plastic such as polyethylene, and a tension member 5 made of a twisted metal wire or a fiber reinforced plastic (FRP) rod is provided at the center thereof. A tape winding layer 6 formed by winding a tape such as a polyester tape is provided on the circumference of the slot rod 2, and a sheath 7 made of polyvinyl chloride or the like is coated on the tape winding layer 6.
【0003】テープ心線4は、図4に示すように光ファ
イバ素線8…を複数本平行に並べて紫外線硬化性樹脂な
どからなる一括被覆層9にて被覆してなるものである。
通常、光ファイバ素線8は外径250μmのものが用い
られる。ところで図2に示したような光ケーブルを構成
する際に、スロットロッド2に収容できるテープ心線4
の数を極めて多くするため、テープ心線4の一括被覆層
9の厚さを薄くした薄肉テープ心線が検討されている。
例えば、通常のテープ心線における一括被覆層の厚さは
75μm程度に形成されるのに対して、テープ心線4の
両側部分4a,4aおよび平坦部分4b,4bの最も薄
い部分で40μm以下とした薄肉テープ心線が検討され
ている。As shown in FIG. 4, the tape core wire 4 is formed by arranging a plurality of optical fiber wires 8 in parallel and coating them with a collective coating layer 9 made of an ultraviolet curable resin or the like.
Usually, the optical fiber element wire 8 having an outer diameter of 250 μm is used. By the way, when the optical cable as shown in FIG. 2 is constructed, the tape core wire 4 which can be accommodated in the slot rod 2
In order to make the number of lines extremely large, a thin-walled tape core wire in which the thickness of the collective covering layer 9 of the tape core wire 4 is thinned is being studied.
For example, the thickness of the collective coating layer in a normal tape core wire is formed to about 75 μm, whereas the thinnest portion of both side portions 4a, 4a and flat portions 4b, 4b of the tape core wire 4 is 40 μm or less. The thin tape core wire that has been made is being considered.
【0004】[0004]
【発明が解決しようとする課題】しかしながら、このよ
うな薄肉テープ心線は保護層である一括被覆層9が薄い
ために側圧に対する損失特性が劣るという欠点がある。
したがって、テープ心線4をスロットロッド2のスロッ
ト溝3内に収容してケーブル化する際に、スロット溝3
の側壁のいずれか一方にテープ心線4のいずれか一方の
端部が当ることによって、光ファイバ素線8が側圧を受
け、伝送損失増加が生じることがある。この伝送損失増
加は、テープ心線4を構成する光ファイバ素線8…のう
ち、スロット溝3の側壁に近い両端部に位置する光ファ
イバ素線8a,8aが直接的に大きな側圧を受けること
になるので、これら両端部の光ファイバ素線8a,8a
で特に大きくなり、問題であった。However, such a thin tape core wire has a drawback that the loss characteristic against lateral pressure is inferior because the collective coating layer 9 as a protective layer is thin.
Therefore, when the tape core wire 4 is accommodated in the slot groove 3 of the slot rod 2 to form a cable, the slot groove 3
When one end of the tape core wire 4 hits one of the side walls of the optical fiber, the optical fiber element wire 8 may be subjected to lateral pressure, resulting in an increase in transmission loss. This increase in transmission loss is caused by the fact that, among the optical fiber wires 8 forming the tape core wire 4, the optical fiber wires 8a, 8a located at both ends near the side wall of the slot groove 3 are directly subjected to a large lateral pressure. Therefore, the optical fiber wires 8a, 8a at both ends are
It became a big problem and became a problem.
【0005】よって、この発明における課題は、テープ
心線をスロットロッド等の収容体に収容して光ケーブル
を構成する際に、テープ心線の両端に位置する光ファイ
バ素線の伝送損失が増大するのを防止することにある。Therefore, an object of the present invention is to increase the transmission loss of the optical fiber wires located at both ends of the tape core wire when the tape core wire is housed in a housing such as a slot rod to form an optical cable. To prevent this.
【0006】[0006]
【課題を解決するための手段】かかる課題は、テープ心
線の一括被覆層の両側部分の厚さを平坦部分の厚さ以上
とすることで解決される。また、一括被覆層の両側部分
の厚さは40〜250μmの範囲とすることが好まし
い。This problem is solved by making the thickness of both side portions of the collective coating layer of the tape core wire equal to or larger than the thickness of the flat portion. The thickness of both sides of the collective coating layer is preferably in the range of 40 to 250 μm.
【0007】以下、本発明を図面に基いて詳しく説明す
る。図1は、本発明のテープ心線11の一例を示すもの
である。この例のテープ心線11が図4に示した従来の
テープ心線4と異なるところは、その両側部分11a,
11aの一括被覆層12の厚さが、平坦部分11b,1
1bよりも厚くなっている点である。この両側部分11
a,11aの一括被覆層12の厚さは、図1における
幅;Waで示され、平坦部分11b,11bの一括被覆
層12の厚さは、図1における幅;Wbで示される。本
発明においてWbは、スロットロッド2等の収容体に収
容できるテープ心線4の数を極めて多くするため、40
μm以下に好ましく形成される。そしてWaは好ましく
は40〜250μmの範囲とされる。Waが40μm未
満では伝送損失の増加を防止する効果が得られず、25
0μmを超えると一括被覆層12の両側部分11a,1
1aが膨らんでしまう傾向がみられ、製造上好ましくな
い。The present invention will be described in detail below with reference to the drawings. FIG. 1 shows an example of the tape core wire 11 of the present invention. The tape core wire 11 of this example is different from the conventional tape core wire 4 shown in FIG.
The thickness of the collective coating layer 12 of 11a is equal to that of the flat portions 11b, 1
It is thicker than 1b. This side part 11
The thickness of the collective coating layer 12 of a and 11a is shown by the width; Wa in FIG. 1, and the thickness of the collective coating layer 12 of the flat portions 11b, 11b is shown by the width; Wb in FIG. In the present invention, Wb is 40 because it increases the number of tape core wires 4 that can be accommodated in the accommodation body such as the slot rod 2.
It is preferably formed with a thickness of less than μm. And Wa is preferably in the range of 40 to 250 μm. If Wa is less than 40 μm, the effect of preventing an increase in transmission loss cannot be obtained.
If it exceeds 0 μm, both side portions 11a, 1 of the collective coating layer 12
1a tends to swell, which is not preferable in manufacturing.
【0008】このようなテープ心線11を製造するに
は、一括被覆層12を形成するためのダイスの吐出口の
形状を微かに変更することで可能となる。また、一括被
覆層12は、紫外線硬化性樹脂から形成することが好ま
しいが、これ以外の樹脂、例えばポリアミド樹脂、シリ
コーン樹脂なども用いることができる。ただし、あまり
硬いものは側圧緩和の効果の点で好ましくなく、弾性率
で50〜150kg/mm2の範囲の樹脂を用いること
が望ましい。In order to manufacture such a tape core wire 11, it is possible to slightly change the shape of the discharge port of the die for forming the collective coating layer 12. Further, the collective coating layer 12 is preferably formed of an ultraviolet curable resin, but other resins such as a polyamide resin and a silicone resin can be used. However, a material that is too hard is not preferable in terms of the effect of relaxing lateral pressure, and it is desirable to use a resin having an elastic modulus in the range of 50 to 150 kg / mm 2 .
【0009】また本発明の光ケーブルは、例えば図2に
示すように、上述のテープ心線11を複数枚重ね合わせ
た状態でスロットロッド2のスロット溝3内に収容し、
周上にテープ巻回層6を設け、シース7を被覆して構成
される。スロット溝3は例えば内幅が約2.8mm、深
さが約4mmに好ましく形成され、テープ心線11が好
ましくは10枚重ね合わせた状態で収容される。また本
発明において、ケーブル化のために用いられる収容体は
スロットロッド2に限らず、テープ心線11を多数収容
できる構造を有するものであれば適宜のもの用いること
ができる。The optical cable of the present invention, for example, as shown in FIG. 2, accommodates a plurality of the above-mentioned tape core wires 11 in the slot groove 3 of the slot rod 2 in a state of being superposed.
A tape winding layer 6 is provided on the circumference and a sheath 7 is covered. The slot groove 3 is preferably formed, for example, to have an inner width of about 2.8 mm and a depth of about 4 mm, and preferably 10 tape core wires 11 are accommodated in a stacked state. Further, in the present invention, the housing used for forming the cable is not limited to the slot rod 2, and any suitable one can be used as long as it has a structure capable of housing a large number of tape core wires 11.
【0010】収容体の他の例としては、例えば図3
(a)に示すような構造の樋状収容体を用いてもよい。
図3(a)中符号21は、金属撚線やFRPロッドなど
からなるテンションメンバである。このテンションメン
バ21の周囲には複数個の樋状収容体22…が撚り合せ
られており、この上にポリエステルテープなどのテープ
を巻き回したテープ巻回層23が設けられ、さらにこの
上に複数個の樋状収容体22…が撚り合せられ、テープ
巻回層23が設けられ、この上にポリ塩化ビニルなどか
らなるシース24が被覆されている。上記樋状収容体2
2は、図3(b)に示すように断面形状がU字状のもの
で、例えば内幅が約2.8mm、深さが約4mmに好ま
しく形成されたポリエチレンなどのプラスチックからな
る長尺体である。この樋状収容体22の内部には、図3
(b)に示すように光ファイバテープ心線11…が複数
枚重ねられた状態で収容されている。また光ケーブル
は、図3(a)のように複数個の樋状収容体22…が撚
り合せられた構造の他、テープ心線11を複数枚重ねて
樋状収容体22に収容し、この樋状収容体22を複数個
束ねて集合し、テープ巻回層を設け、シースを施した構
造とすることもできる。Another example of the container is shown in FIG.
A gutter-shaped container having a structure as shown in (a) may be used.
Reference numeral 21 in FIG. 3A is a tension member made of a twisted metal wire, an FRP rod, or the like. A plurality of trough-shaped containers 22 are twisted around the tension member 21, and a tape winding layer 23 formed by winding a tape such as polyester tape is provided on the plurality of trough-shaped containers 22. The individual trough-shaped containers 22 are twisted together, a tape winding layer 23 is provided, and a sheath 24 made of polyvinyl chloride or the like is coated on the tape winding layer 23. The trough-shaped container 2
2 has a U-shaped cross section as shown in FIG. 3 (b), for example, an elongated body made of a plastic such as polyethylene, preferably having an inner width of about 2.8 mm and a depth of about 4 mm. Is. The inside of the trough-shaped container 22 is shown in FIG.
As shown in (b), a plurality of optical fiber ribbons 11 ... Are accommodated in a stacked state. The optical cable has a structure in which a plurality of trough-shaped containers 22 are twisted together as shown in FIG. 3A, and a plurality of tape core wires 11 are stacked and accommodated in the trough-shaped container 22. It is also possible to bundle a plurality of the shape-containing bodies 22 and collect them, provide a tape winding layer, and form a sheath.
【0011】本発明のテープ心線11では、その両側部
分11a,11aの被覆厚さが厚くなっているので、テ
ープ心線11がスロット溝3あるいは樋状収容体22の
側壁に当ることによって側圧を受けても、その側圧が内
部の光ファイバ素線8にまで伝えられず、両側に位置す
る光ファイバ素線8a,8aの伝送損失が増加すること
がない。以下、実施例を示して作用効果を明確にする。In the tape core wire 11 of the present invention, since both side portions 11a, 11a are thickly coated, the tape core wire 11 hits the slot groove 3 or the side wall of the trough-shaped container 22 to cause lateral pressure. Even if it is received, the lateral pressure is not transmitted to the internal optical fiber wires 8 and the transmission loss of the optical fiber wires 8a, 8a located on both sides does not increase. Hereinafter, examples will be shown to clarify the action and effect.
【0012】[0012]
【実施例】外径125μmのシングルモード光ファイバ
裸線に紫外線硬化性樹脂を被覆し、外径250μmの光
ファイバ素線とした。この光ファイバ素線を8本平行に
並べてダイスに通し、紫外線硬化性樹脂からなる一括被
覆層を形成して8心のテープ心線を得た。この際、ダイ
スの吐出口の形状を変更して、両側部分の被覆厚さを2
0〜300μmの範囲で変化させた。なお、平坦部分の
被覆厚さは20μmまたは40μmとした。このように
して得られたテープ心線をポリエチレン製で、外径24
mmのスロットロッドのスロット溝(内幅2.8mm、
深さ4mm)内に10枚重ねて収容しケーブル化した。
ケーブル化前後での各テープ心線の伝送損失変化を波長
1.55μmで測定した。重ねられた10枚のテープ心
線のそれぞれについて測定を行った結果、伝送損失増加
分の最大値を下記表1に示す。EXAMPLE A bare single mode optical fiber having an outer diameter of 125 μm was coated with an ultraviolet curable resin to obtain an optical fiber element wire having an outer diameter of 250 μm. Eight optical fiber strands were arranged in parallel and passed through a die to form a collective coating layer made of an ultraviolet curable resin to obtain an 8-fiber ribbon. At this time, the shape of the discharge port of the die is changed to reduce the coating thickness on both sides to 2
It was changed in the range of 0 to 300 μm. The coating thickness of the flat portion was 20 μm or 40 μm. The tape core wire thus obtained is made of polyethylene and has an outer diameter of 24
mm slot rod slot groove (internal width 2.8 mm,
10 sheets were piled up in a depth of 4 mm) to form a cable.
The change in transmission loss of each tape core wire before and after forming a cable was measured at a wavelength of 1.55 μm. As a result of the measurement of each of the 10 stacked cores of the tape, the maximum value of the transmission loss increase is shown in Table 1 below.
【0013】[0013]
【表1】 [Table 1]
【0014】表1の結果から明らかなように、両側部分
の被覆厚さが30μm以下のテープ心線(No.1およ
び2)においては、ケーブル化によって伝送損失が大き
く増加していることがわかる。一方、平坦部分の厚さが
40μm以下に対して、両側部分の厚さを40μm以上
(No.3〜9)とすることによって、ケーブル化によ
る伝送損失増加を抑え得ることが認められた。また両側
部分の厚さが300μmのテープ心線(No.7)は、
一括被覆層の両側部分が膨らんで製造が困難であった。
したがって、両側部分の厚さは250μm以下が適当で
あることが確認された。As is clear from the results shown in Table 1, in the case of the tape core wires (Nos. 1 and 2) whose coating thickness on both sides is 30 μm or less, the transmission loss greatly increases due to the cable formation. . On the other hand, it was confirmed that an increase in transmission loss due to cable formation can be suppressed by setting the thickness of both side portions to 40 μm or more (No. 3 to 9) while the thickness of the flat portion is 40 μm or less. In addition, the tape core wire (No. 7) having a thickness of 300 μm on both sides is
Both sides of the collective coating layer were swollen, which made manufacturing difficult.
Therefore, it was confirmed that the thickness of both side portions is appropriately 250 μm or less.
【0015】[0015]
【発明の効果】以上説明したように、この発明の光ファ
イバテープ心線は、外径250μmの光ファイバ素線を
複数本並べて一括被覆層により一体化した光ファイバテ
ープ心線において、一括被覆層の両側部分の厚さを平坦
部分の厚さ以上としたものである。またこの発明の光ケ
ーブルは、上記光ファイバテープ心線を複数枚重ねて収
容体に収容してなるものである。したがって本発明によ
れば、ケーブル化によって光ファイバテープ心線の両側
に位置する光ファイバ素線の伝送損失が増加するのを防
止することができる。よって、光ファイバ素線の伝送損
失特性を損うことなく、光ケーブルにおける高密度化を
達成することができる。As described above, the optical fiber tape core wire of the present invention is an optical fiber tape core wire in which a plurality of optical fiber element wires having an outer diameter of 250 μm are arranged and integrated by a collective cover layer. The thickness of both side portions is equal to or greater than the thickness of the flat portion. Further, the optical cable of the present invention comprises a plurality of the above-mentioned optical fiber ribbons which are stacked and housed in a housing. Therefore, according to the present invention, it is possible to prevent an increase in transmission loss of the optical fiber element wires located on both sides of the optical fiber tape core wire due to the cable formation. Therefore, it is possible to achieve high density in the optical cable without deteriorating the transmission loss characteristic of the optical fiber strand.
【図1】 本発明の光ファイバテープ心線の一例を示す
断面図である。FIG. 1 is a sectional view showing an example of an optical fiber ribbon according to the present invention.
【図2】 本発明の光ケーブルの一実施例を示す概略断
面図である。FIG. 2 is a schematic sectional view showing an embodiment of the optical cable of the present invention.
【図3】 本発明の光ケーブルの他の実施例を示すもの
で(a)は光ケーブルの概略断面図、(b)は樋状収容
体とこれに収容された光ファイバテープ心線を示す断面
図である。3A and 3B show another embodiment of the optical cable of the present invention, wherein FIG. 3A is a schematic sectional view of the optical cable, and FIG. 3B is a sectional view showing a trough-shaped container and an optical fiber tape core wire accommodated in the container. Is.
【図4】 従来の光ファイバテープ心線を示す断面図で
ある。FIG. 4 is a cross-sectional view showing a conventional optical fiber ribbon.
【符号の説明】 2…スロットロッド、8…光ファイバ素線、11…光フ
ァイバテープ心線、11a…両側部分、11b…平坦部
分、12…一括被覆層、22…樋状収容体。[Explanation of Codes] 2 ... Slot rod, 8 ... Optical fiber element wire, 11 ... Optical fiber tape core wire, 11a ... Both side portions, 11b ... Flat portion, 12 ... Collective coating layer, 22 ... Trough-shaped container.
Claims (3)
本並べて一括被覆層により一体化した光ファイバテープ
心線において、一括被覆層の両側部分の厚さを平坦部分
の厚さ以上としたことを特徴とする光ファイバテープ心
線。1. In an optical fiber tape core wire in which a plurality of optical fiber element wires having an outer diameter of 250 μm are lined up and integrated by a collective coating layer, the thickness of both sides of the collective coating layer is equal to or greater than the thickness of a flat portion. An optical fiber tape core wire characterized by.
の範囲である請求項1記載の光ファイバテープ心線。2. The thickness of both sides is 40 to 250 μm.
The optical fiber ribbon according to claim 1, wherein
プ心線を複数枚重ねて収容体に収容してなることを特徴
とする光ケーブル。3. An optical cable comprising a plurality of optical fiber ribbons according to claim 1 or 2 which are stacked and housed in a housing.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7066315A JPH08262292A (en) | 1995-03-24 | 1995-03-24 | Coated optical fiber ribbon and optical cable formed by using the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7066315A JPH08262292A (en) | 1995-03-24 | 1995-03-24 | Coated optical fiber ribbon and optical cable formed by using the same |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH08262292A true JPH08262292A (en) | 1996-10-11 |
Family
ID=13312283
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7066315A Pending JPH08262292A (en) | 1995-03-24 | 1995-03-24 | Coated optical fiber ribbon and optical cable formed by using the same |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH08262292A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6253013B1 (en) | 1999-03-29 | 2001-06-26 | Siecor Operations, Llc | Optical fiber arrays |
US6449412B1 (en) | 1998-06-30 | 2002-09-10 | Corning Cable Systems Llc | Fiber optic ribbon interconnect cable |
US6748148B2 (en) | 2002-05-31 | 2004-06-08 | Corning Cable Systems Llc | Optical fiber ribbons having a non-uniform thickness and/or preferential tear portions |
US6792184B2 (en) | 2002-05-31 | 2004-09-14 | Corning Cable Systems Llc | Optical fiber ribbons having a preferential separation sequence |
JP2004354889A (en) * | 2003-05-30 | 2004-12-16 | Sumitomo Electric Ind Ltd | Optical fiber ribbon |
US6853783B2 (en) | 2003-02-28 | 2005-02-08 | Corning Cable Systems Llc | Optical Fiber Ribbons Having Preferential Tear Portions |
US7039282B2 (en) | 2004-06-30 | 2006-05-02 | Corning Cable Systems Llc | Optical fiber array with an intermittent profile and method for manufacturing the same |
US7151879B2 (en) | 2002-11-06 | 2006-12-19 | Sumitomo Electric Industries, Ltd. | Optical fiber ribbon that is easily branched into individual optical fibers and optical fiber cable using the same |
US7274846B1 (en) | 2006-09-29 | 2007-09-25 | Corning Cable Systems, Llc. | Fiber optic ribbon subunits having ends with different shapes |
US7532796B2 (en) | 2006-09-29 | 2009-05-12 | Corning Cable Systems Llc | Fiber optic ribbons having one or more predetermined fracture regions |
Citations (3)
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JPS61173207A (en) * | 1985-01-28 | 1986-08-04 | Nippon Telegr & Teleph Corp <Ntt> | Optical fiber tape and its manufacture |
JPS6452107A (en) * | 1987-08-24 | 1989-02-28 | Mitsubishi Cable Ind Ltd | Production of tape type optical fiber |
JPH0519150A (en) * | 1991-07-11 | 1993-01-29 | Fujikura Ltd | Coated optical fiber tape and optical cable using the same |
-
1995
- 1995-03-24 JP JP7066315A patent/JPH08262292A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61173207A (en) * | 1985-01-28 | 1986-08-04 | Nippon Telegr & Teleph Corp <Ntt> | Optical fiber tape and its manufacture |
JPS6452107A (en) * | 1987-08-24 | 1989-02-28 | Mitsubishi Cable Ind Ltd | Production of tape type optical fiber |
JPH0519150A (en) * | 1991-07-11 | 1993-01-29 | Fujikura Ltd | Coated optical fiber tape and optical cable using the same |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6449412B1 (en) | 1998-06-30 | 2002-09-10 | Corning Cable Systems Llc | Fiber optic ribbon interconnect cable |
US6253013B1 (en) | 1999-03-29 | 2001-06-26 | Siecor Operations, Llc | Optical fiber arrays |
US6748148B2 (en) | 2002-05-31 | 2004-06-08 | Corning Cable Systems Llc | Optical fiber ribbons having a non-uniform thickness and/or preferential tear portions |
US6792184B2 (en) | 2002-05-31 | 2004-09-14 | Corning Cable Systems Llc | Optical fiber ribbons having a preferential separation sequence |
US7085459B2 (en) | 2002-05-31 | 2006-08-01 | Corning Cable Systems Llc | Optical fiber ribbons with subunits having preferential tear portions |
US7151879B2 (en) | 2002-11-06 | 2006-12-19 | Sumitomo Electric Industries, Ltd. | Optical fiber ribbon that is easily branched into individual optical fibers and optical fiber cable using the same |
US6853783B2 (en) | 2003-02-28 | 2005-02-08 | Corning Cable Systems Llc | Optical Fiber Ribbons Having Preferential Tear Portions |
JP2004354889A (en) * | 2003-05-30 | 2004-12-16 | Sumitomo Electric Ind Ltd | Optical fiber ribbon |
US7039282B2 (en) | 2004-06-30 | 2006-05-02 | Corning Cable Systems Llc | Optical fiber array with an intermittent profile and method for manufacturing the same |
US7274846B1 (en) | 2006-09-29 | 2007-09-25 | Corning Cable Systems, Llc. | Fiber optic ribbon subunits having ends with different shapes |
US7532796B2 (en) | 2006-09-29 | 2009-05-12 | Corning Cable Systems Llc | Fiber optic ribbons having one or more predetermined fracture regions |
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