JP2002116356A - Coated optical fiber - Google Patents
Coated optical fiberInfo
- Publication number
- JP2002116356A JP2002116356A JP2000310116A JP2000310116A JP2002116356A JP 2002116356 A JP2002116356 A JP 2002116356A JP 2000310116 A JP2000310116 A JP 2000310116A JP 2000310116 A JP2000310116 A JP 2000310116A JP 2002116356 A JP2002116356 A JP 2002116356A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- optical fiber
- coating
- resin coating
- layer
- 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
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/104—Coating to obtain optical fibres
- C03C25/1065—Multiple coatings
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Surface Treatment Of Glass Fibres Or Filaments (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、光ファイバ素線上
に保護被覆を施した光ファイバ心線の被覆構造に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating structure for an optical fiber in which a protective coating is provided on an optical fiber.
【０００２】[0002]
【従来の技術】光ファイバ心線として、０．１２５ｍｍ
のガラス光ファイバに外径０．４ｍｍのシリコン被覆を
施した素線に、外径０．９ｍｍのナイロン被覆を施した
０．４シリコン／０．９ナイロンと称する光ファイバ心
線が知られている。また、０．１２５ｍｍのガラス光フ
ァイバに外径０．２５ｍｍの紫外線硬化型樹脂（以下、
ＵＶ樹脂という）被覆を施した光ファイバ素線に、外径
０．９ｍｍのポリ塩化ビニル（以下、ＰＶＣ樹脂とい
う）被覆を施した０．２５ＵＶ／０．９ＰＶＣと称する
光ファイバ心線が知られている。2. Description of the Related Art An optical fiber core is 0.125 mm.
An optical fiber core called 0.4 silicon / 0.9 nylon, in which a glass optical fiber having a silicon coating with an outer diameter of 0.4 mm and a nylon coating with an outer diameter of 0.9 mm, is known. I have. In addition, an ultraviolet curable resin having an outer diameter of 0.25 mm (hereinafter, referred to as a 0.125 mm glass optical fiber).
An optical fiber core wire called 0.25UV / 0.9PVC, in which a coated optical fiber having a 0.9 mm outer diameter (hereinafter referred to as a PVC resin) is coated on an optical fiber wire coated with a UV resin). ing.
【０００３】前者の０．４シリコン／０．９ナイロン心
線は、被覆樹脂が熱硬化性のため硬化速度が遅く、この
ため線速を速めることができず生産性に問題がある。後
者の０．２５ＵＶ／０．９ＰＶＣ心線は、ＰＶＣが燃焼
生成物としてダイオキシン、塩酸等の有害物質を発生さ
せるといわれており、また、酸化防止のため鉛を含有さ
せており環境上の問題がある。これらの観点から、光フ
ァイバ心線の被覆構造としては、０．２５ＵＶ素線に外
径０．９ｍｍのポリエチレン樹脂（以下、ＰＥ樹脂とい
う）を被覆した０．２５ＵＶ／０．９ＰＥの光ファイバ
心線の検討がなされているた。ＰＥ樹脂を選んだ理由と
しては、汎用の被覆樹脂材の中でもＰＶＣ樹脂に近い物
性を有していることにある。[0003] The former, a 0.4 silicon / 0.9 nylon core wire, has a low curing speed due to the thermosetting property of the coating resin, so that the linear speed cannot be increased, and there is a problem in productivity. The latter 0.25UV / 0.9PV core wire is said to generate harmful substances such as dioxin and hydrochloric acid as a combustion product by PVC, and contains lead for antioxidation, which causes environmental problems. There is. From these viewpoints, as the coating structure of the optical fiber core, a 0.25 UV / 0.9 PE optical fiber core in which a 0.25 UV strand is coated with a polyethylene resin (hereinafter referred to as PE resin) having an outer diameter of 0.9 mm is used. The line was being considered. The reason for choosing PE resin is that it has physical properties close to PVC resin among general-purpose coating resin materials.
【０００４】０．２５ＵＶ／０．９ＰＥの光ファイバ心
線について種々検討した結果、ＰＥ樹脂被覆形成の速度
を上げていくと、光ファイバの伝送損失が増加するとい
う傾向があることが判明した。ＰＥ樹脂被覆は、通常の
押出し被覆ダイを用いて形成するが、図６は、このＰＥ
樹脂被覆形成の速度と伝送損失の関係を示すもので、被
覆線速５０（ｍ／ｍｉｎ）では、１．５５μｍの波長で
０．２ｄＢ／ｋｍの伝送損失であるのに対し、被覆線速
１００（ｍ／ｍｉｎ）では、１．０ｄＢ／ｋｍの伝送損
失、被覆線速１５０（ｍ／ｍｉｎ）では、１．５ｄＢ／
ｋｍ位の伝送損失が生じる。As a result of various studies on a 0.25 UV / 0.9 PE optical fiber core, it has been found that as the speed of forming the PE resin coating increases, the transmission loss of the optical fiber tends to increase. The PE resin coating is formed by using a normal extrusion coating die.
This shows the relationship between the speed of resin coating formation and the transmission loss. At a coating linear speed of 50 (m / min), the transmission loss is 0.2 dB / km at a wavelength of 1.55 μm, whereas the coating linear speed is 100 (m / min). (M / min), a transmission loss of 1.0 dB / km, and at a coated line speed of 150 (m / min), 1.5 dB / km.
A transmission loss of about km occurs.
【０００５】伝送損失が被覆線速で増加する原因を調査
した結果、被覆線速が速くなるにつれて、図５に示すよ
うにガラスファイバ１上のＵＶ樹脂被覆２とＰＥ樹脂被
覆３との接触界面で、ＰＥ樹脂被覆の内面に凹凸４が生
じていることが判明した。この凹凸４が生じることによ
り、ＵＶ樹脂被覆２とＰＥ樹脂被覆３との接触状態が不
均一なものとなり、この結果、光ファイバへの側圧が不
均一となり歪みが生じることに起因するものと考えられ
る。そして、被覆線速を速める程この現象が、顕著に生
じているものと思われる。[0005] As a result of investigating the cause of the increase in transmission loss at the coating wire speed, as the coating wire speed increases, the contact interface between the UV resin coating 2 and the PE resin coating 3 on the glass fiber 1 as shown in FIG. As a result, it was found that the unevenness 4 occurred on the inner surface of the PE resin coating. Due to the formation of the irregularities 4, the contact state between the UV resin coating 2 and the PE resin coating 3 becomes non-uniform, and as a result, the lateral pressure on the optical fiber becomes non-uniform, which is considered to be caused by distortion. Can be This phenomenon seems to occur more remarkably as the coating linear velocity increases.
【０００６】ＵＶ樹脂被覆２との接触界面で、ＰＥ樹脂
被覆３の内面に凹凸４が生じる理由としては、ＰＥ樹脂
がＵＶ樹脂被覆に対して非密着性の樹脂であるため、押
出し被覆時にＰＥ樹脂材がＵＶ樹脂被覆上を所々で滑っ
て生じると考えられるが、凹凸発生の詳細なメカニズム
は明らかでない。The reason why the unevenness 4 is formed on the inner surface of the PE resin coating 3 at the contact interface with the UV resin coating 2 is that the PE resin is a resin that is not adherent to the UV resin coating, so that the PE resin is not coated during the extrusion coating. It is thought that the resin material slips on the UV resin coating in places, but the detailed mechanism of the occurrence of irregularities is not clear.
【０００７】[0007]
【発明が解決しようとする課題】本発明は、上述した事
情に鑑みてなされたもので、光ファイバ素線のＵＶ樹脂
被覆上にＰＥ樹脂被覆を形成するに際して、被覆速度を
速くしてもＰＥ樹脂被覆の内面に凹凸が生じず、伝送損
失も増加することのない光ファイバ心線被覆を提供する
ものである。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and when forming a PE resin coating on a UV resin coating of an optical fiber, even if the coating speed is increased, the PE resin coating is applied. An object of the present invention is to provide an optical fiber core coating which does not cause unevenness on the inner surface of the resin coating and does not increase transmission loss.
【０００８】[0008]
【課題を解決するための手段】本発明の光ファイバ心線
は、ガラスファイバをＵＶ樹脂で被覆した光ファイバ素
線をＰＥ樹脂で被覆した光ファイバ心線であって、光フ
ァイバ素線とＰＥ樹脂の被覆層の間にポリプロピレン系
樹脂からなる接着性樹脂層を備えることを特徴とする。
また、前記光ファイバ心線上に、ポリプロピレン系樹脂
からなる接着性樹脂を１０重量％以上５０重量％以下で
混合したポリエチレン樹脂を被覆することを特徴とす
る。さらに、ポリプロピレン系樹脂からなる接着性樹脂
として、エチレン−酢酸エチル共重合体またはエチレン
−酢酸ビニル共重合体のいずれか一方または混合物から
なることを特徴とする。SUMMARY OF THE INVENTION An optical fiber core of the present invention is an optical fiber core obtained by coating a glass fiber with a UV resin and an optical fiber with a PE resin. An adhesive resin layer made of a polypropylene-based resin is provided between the resin coating layers.
Further, the optical fiber core is coated with a polyethylene resin in which an adhesive resin made of a polypropylene-based resin is mixed in an amount of 10% by weight or more and 50% by weight or less. Further, as an adhesive resin composed of a polypropylene resin, the adhesive resin is composed of one or a mixture of an ethylene-ethyl acetate copolymer and an ethylene-vinyl acetate copolymer.
【０００９】[0009]
【発明の実施の形態】図１は、本発明の第１の実施の形
態を示す概略図で、図中、１１は光ファイバ、１２はＵ
Ｖ樹脂被覆層、１３は接着層、１４はＰＥ樹脂被覆層を
示す。光ファイバ１１は、公称外径０．１２５ｍｍの石
英ガラスファイバで、この光ファイバの線引き工程中に
ＵＶ樹脂被覆層１２を引き続き形成して、光ファイバ素
線とされる。ＵＶ樹脂被覆層１２には、ウレタンアクリ
レートやエポキシアクリレートなどの樹脂が用いられ、
被覆層外径が０．２５ｍｍになるように形成される。FIG. 1 is a schematic diagram showing a first embodiment of the present invention, in which 11 is an optical fiber, and 12 is a U-shaped fiber.
V denotes a resin coating layer, 13 denotes an adhesive layer, and 14 denotes a PE resin coating layer. The optical fiber 11 is a silica glass fiber having a nominal outer diameter of 0.125 mm, and the UV resin coating layer 12 is continuously formed during the optical fiber drawing step to form an optical fiber. For the UV resin coating layer 12, a resin such as urethane acrylate or epoxy acrylate is used,
It is formed so that the outer diameter of the coating layer is 0.25 mm.
【００１０】ＵＶ樹脂被覆層１２の外周に、接着層１３
を厚み０．１５ｍｍ以下で均一に形成し、この接着層を
介してＰＥ樹脂被覆層１４を押し出し成形等で形成し、
光ファイバ心線とされる。接着層１３には、ＵＶ樹脂被
覆層１２とＰＥ樹脂被覆層１４の両層に接する極性基を
備えるポリオレフィン系樹脂が用いられる。接着層１３
の材料として、具体的には、エチレン−酢酸エチル共重
合体（ＥＥＡ）とエチレン−酢酸ビニル共重合体（ＥＶ
Ａ）のいずれか、または両者の混合物が用いられる。On the outer periphery of the UV resin coating layer 12, an adhesive layer 13
Is uniformly formed at a thickness of 0.15 mm or less, and the PE resin coating layer 14 is formed by extrusion molding or the like through the adhesive layer,
It is an optical fiber. As the adhesive layer 13, a polyolefin-based resin having a polar group in contact with both the UV resin coating layer 12 and the PE resin coating layer 14 is used. Adhesive layer 13
Specifically, as the material for the ethylene-ethyl acetate copolymer (EEA) and the ethylene-vinyl acetate copolymer (EV
Either A) or a mixture of both is used.
【００１１】図２は、ＰＥ樹脂被覆層を方形断面の被覆
層１５で形成した例を示すものである。図２のように断
面が方形の被覆層１５の形成の場合も、円形の被覆層と
同様に接着層１３を介して形成することができる。図２
の断面方形のＰＥ樹脂被覆層１５には、光ファイバ素線
の両側に抗張力体１６を縦添えしてあり、機器内配線等
に直接使用することができる。FIG. 2 shows an example in which a PE resin coating layer is formed by a coating layer 15 having a rectangular cross section. In the case of forming the covering layer 15 having a rectangular cross section as shown in FIG. 2, the covering layer 15 can be formed via the adhesive layer 13 similarly to the case of the circular covering layer. FIG.
A tensile strength member 16 is vertically attached to both sides of the optical fiber in the PE resin coating layer 15 having a rectangular cross section, and can be used directly for wiring in equipment.
【００１２】上述した図１および図２で示す実施の形態
を用いることにより、ＰＥ樹脂被覆層１２、１５の形成
を高速で行なうべく、被覆線速（１５０ｍ／ｍｉｎ）を
速めて被覆形成を行なったが伝送損失の増加は見られ
ず、ＰＥ樹脂被覆層の内面に凹凸の発生は見られなかっ
た。By using the embodiment shown in FIGS. 1 and 2 described above, in order to form the PE resin coating layers 12 and 15 at a high speed, the coating is formed at an increased coating linear speed (150 m / min). However, no increase in transmission loss was observed, and no irregularities were observed on the inner surface of the PE resin coating layer.
【００１３】図３は、接着層１３およびＰＥ樹脂被覆層
１４、１５の形成方法の一例を示す図である。成形ダイ
１８として、接着材の押出しダイ１９とＰＥ樹脂材の押
出しダイ２０を同軸状に配した構成のものが用いられ
る。接着層１３は、ＰＥ樹脂被覆層１４の形成に先立っ
て、押出ダイ１９により均一厚さ（０．１５ｍｍ以下が
望ましい）に塗布成形され、ある程度硬化された接着層
３上に、押出しダイ２０によりＰＥ樹脂被覆層１２また
は１５が形成される。ＰＥ樹脂被覆層１２は、被覆外径
が０．９ｍｍになるように塗布成形される。FIG. 3 is a diagram showing an example of a method for forming the adhesive layer 13 and the PE resin coating layers 14 and 15. As the forming die 18, one having a configuration in which an extrusion die 19 of an adhesive and an extrusion die 20 of a PE resin material are coaxially used is used. Prior to the formation of the PE resin coating layer 14, the adhesive layer 13 is applied and formed to have a uniform thickness (preferably 0.15 mm or less) by an extrusion die 19, and the adhesive layer 3 is cured to a certain extent by an extrusion die 20. The PE resin coating layer 12 or 15 is formed. The PE resin coating layer 12 is applied and formed so that the coating outer diameter becomes 0.9 mm.
【００１４】図４は、本発明の第２の実施の形態を示す
概略図で、図中、１１は光ファイバ、１２はＵＶ樹脂被
覆層、１７は接着性樹脂を混合したＰＥ樹脂被覆層を示
す。光ファイバ１１は、図１と同様に公称外径０．１２
５ｍｍの石英ガラスファイバで、この光ファイバの線引
き工程中にＵＶ樹脂被膜層１２を引き続き形成して、光
ファイバ素線とされる。ＵＶ樹脂被覆層１２には、エポ
キシアクリレートやウレタンアクリレートなどの樹脂が
用いられ、被覆外径が０．２５ｍｍになるように形成さ
れる。FIG. 4 is a schematic view showing a second embodiment of the present invention, in which 11 is an optical fiber, 12 is a UV resin coating layer, and 17 is a PE resin coating layer mixed with an adhesive resin. Show. The optical fiber 11 has a nominal outer diameter of 0.12 as in FIG.
With a 5 mm quartz glass fiber, the UV resin coating layer 12 is continuously formed during the optical fiber drawing step to form an optical fiber. A resin such as epoxy acrylate or urethane acrylate is used for the UV resin coating layer 12 and is formed so that the coating outer diameter becomes 0.25 mm.
【００１５】図１の第１の実施の形態では、ＵＶ樹脂被
覆層とＰＥ樹脂被覆層との間に接着層を介在させていた
が、図４の第２の実施の形態では、図１で接着層に用い
た樹脂材料をＰＥ樹脂被覆層１７に混合して使用する。
したがって、ＵＶ樹脂被覆層１２の外側には、ＰＥ樹脂
被覆層１７が外径０．９ｍｍになるように押し出し成形
により直接形成される。In the first embodiment shown in FIG. 1, an adhesive layer is interposed between the UV resin coating layer and the PE resin coating layer. However, in the second embodiment shown in FIG. The resin material used for the adhesive layer is mixed with the PE resin coating layer 17 and used.
Therefore, the PE resin coating layer 17 is directly formed on the outside of the UV resin coating layer 12 by extrusion molding so as to have an outer diameter of 0.9 mm.
【００１６】ＰＥ樹脂被覆層１７に混合される材料とし
ては、エチレン−酢酸エチル共重合体（ＥＥＡ）とエチ
レン−酢酸ビニル共重合体（ＥＶＡ）のいずれか、また
は両者の混合物が１０重量％以上、５０重量％以下で混
合される。混合する材料が１０重量％未満では、接着効
果が得られず、５０重量％を越えるとＰＥ樹脂とうまく
混合されなくなる。As a material to be mixed in the PE resin coating layer 17, at least 10% by weight of ethylene-ethyl acetate copolymer (EEA) and ethylene-vinyl acetate copolymer (EVA) or a mixture of both is used. , 50% by weight or less. If the amount of the material to be mixed is less than 10% by weight, the adhesive effect cannot be obtained. If the amount exceeds 50% by weight, the material cannot be mixed well with the PE resin.
【００１７】上述の接着層形成のための材料を、ＰＥ樹
脂材に予め混合してＰＥ樹脂被覆層１７を形成した。被
覆速度を速くしても、伝送損失が増加することはなく、
図１，２の実施の形態と同様な結果を得ることができ
た。The above-described material for forming the adhesive layer was previously mixed with a PE resin material to form a PE resin coating layer 17. Even if the coating speed is increased, the transmission loss does not increase,
The same result as the embodiment of FIGS. 1 and 2 was obtained.
【００１８】[0018]
【発明の効果】以上の説明から明らかなように、本発明
によれば、光ファイバ素線のＵＶ樹脂被覆に対して、Ｐ
Ｅ樹脂被覆層がすべりを生じない接着層を形成してある
ため、ＰＥ樹脂材の被覆速度を速くしてもＰＥ樹脂被覆
層の内面に凹凸が生ぜず、光ファイバに伝送損失の増加
もない。As is apparent from the above description, according to the present invention, the UV resin coating of the optical fiber is not
Since the E resin coating layer forms an adhesive layer that does not cause slip, even if the coating speed of the PE resin material is increased, no irregularities are generated on the inner surface of the PE resin coating layer, and there is no increase in transmission loss in the optical fiber. .
【００１９】また、光ファイバ素線のＵＶ樹脂被覆に対
して、ＰＥ樹脂被覆層がすべりを生じない接着性樹脂を
ＰＥ樹脂に混合することにより、ＰＥ樹脂の被覆速度を
速くしてもＰＥ樹脂被覆層の内面に凹凸が生ぜず、光フ
ァイバの伝送損失を増加させない。Further, by mixing an adhesive resin which does not cause slippage of the PE resin coating layer with the UV resin coating of the optical fiber, the PE resin coating layer is mixed with the PE resin even if the coating speed of the PE resin is increased. No irregularities occur on the inner surface of the coating layer, and the transmission loss of the optical fiber does not increase.
【図１】本発明の第１の実施の形態を示す概略図であ
る。FIG. 1 is a schematic diagram showing a first embodiment of the present invention.
【図２】本発明の第１の実施の形態の他の具体例を示す
図である。FIG. 2 is a diagram showing another specific example of the first embodiment of the present invention.
【図３】本発明の光ファイバ心線の形成方法の一例を示
す図である。FIG. 3 is a diagram illustrating an example of a method for forming an optical fiber core wire according to the present invention.
【図４】本発明の第２の実施の形態を示す概略図であ
る。FIG. 4 is a schematic diagram showing a second embodiment of the present invention.
【図５】本発明を適用しないＰＥ樹脂被覆層の状態を示
す図である。FIG. 5 is a view showing a state of a PE resin coating layer to which the present invention is not applied.
【図６】本発明を適用しないＰＥ樹脂被覆層形成の被覆
線速と伝送損失の関係を示す図である。FIG. 6 is a diagram showing a relationship between a coating linear velocity and a transmission loss in forming a PE resin coating layer to which the present invention is not applied.
１１…ガラスファイバ、１２…紫外線硬化型樹脂（ＵＶ
樹脂）被覆層、１３…接着層、１４，１５，１６…ポリ
エチレン（ＰＥ樹脂）被覆層、１７…抗張力体、１８…
押出しダイ。11: glass fiber, 12: ultraviolet curable resin (UV
(Resin) coating layer, 13 ... adhesion layer, 14, 15, 16 ... polyethylene (PE resin) coating layer, 17 ... tensile member, 18 ...
Extrusion die.
Claims (4)
覆した光ファイバ素線をポリエチレン樹脂で被覆する光
ファイバ心線であって、前記光ファイバ素線と前記ポリ
エチレン樹脂の被覆層の間にポリプロピレン系樹脂から
なる接着性樹脂層を備えていることを特徴とする光ファ
イバ心線。1. An optical fiber core obtained by coating an optical fiber obtained by coating a glass fiber with an ultraviolet curable resin with a polyethylene resin, wherein a polypropylene-based fiber is provided between the optical fiber and the polyethylene resin coating layer. An optical fiber core comprising an adhesive resin layer made of a resin.
レート系紫外線硬化型樹脂であり、前記接着性樹脂層が
エチレン−酢酸エチル共重合体またはエチレン−酢酸ビ
ニル共重合体のいずれか一方または混合物からなること
を特徴とする請求項１に記載の光ファイバ心線。2. The ultraviolet-curable resin is a urethane acrylate-based ultraviolet-curable resin, and the adhesive resin layer is made of one or a mixture of an ethylene-ethyl acetate copolymer and an ethylene-vinyl acetate copolymer. The optical fiber core according to claim 1, wherein:
覆した光ファイバ素線をポリエチレン樹脂で被覆する光
ファイバ心線であって、前記ポリエチレン樹脂にポリプ
ロピレン系樹脂からなる接着性樹脂を１０重量％以上５
０重量％以下で混合したことを特徴とする光ファイバ心
線。3. An optical fiber core obtained by coating an optical fiber obtained by coating a glass fiber with an ultraviolet curable resin with a polyethylene resin, wherein the polyethylene resin is at least 10% by weight of an adhesive resin made of a polypropylene resin. 5
An optical fiber core mixed at 0% by weight or less.
レート系紫外線硬化型樹脂であり、混合する前記接着性
樹脂がエチレン−酢酸エチル共重合体またはエチレン−
酢酸ビニル共重合体のいずれか一方または混合物からな
ることを特徴とする請求項３に記載の光ファイバ心線。4. The ultraviolet-curable resin is a urethane acrylate-based ultraviolet-curable resin, and the adhesive resin to be mixed is an ethylene-ethyl acetate copolymer or ethylene-
The optical fiber core wire according to claim 3, wherein the optical fiber core wire is made of any one or a mixture of vinyl acetate copolymers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000310116A JP2002116356A (en) | 2000-10-11 | 2000-10-11 | Coated optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000310116A JP2002116356A (en) | 2000-10-11 | 2000-10-11 | Coated optical fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002116356A true JP2002116356A (en) | 2002-04-19 |
Family
ID=18790131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000310116A Pending JP2002116356A (en) | 2000-10-11 | 2000-10-11 | Coated optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002116356A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008058505A (en) * | 2006-08-30 | 2008-03-13 | Fujikura Ltd | Optical fiber drop cable and optical fiber indoor cable |
| JP2008233273A (en) * | 2007-03-16 | 2008-10-02 | Sumitomo Electric Ind Ltd | Optical fiber cable |
| KR101394988B1 (en) * | 2012-11-01 | 2014-05-15 | 한국건설기술연구원 | Manufacturing Method of Strand having Fiber Sensor |
-
2000
- 2000-10-11 JP JP2000310116A patent/JP2002116356A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008058505A (en) * | 2006-08-30 | 2008-03-13 | Fujikura Ltd | Optical fiber drop cable and optical fiber indoor cable |
| JP2008233273A (en) * | 2007-03-16 | 2008-10-02 | Sumitomo Electric Ind Ltd | Optical fiber cable |
| KR101394988B1 (en) * | 2012-11-01 | 2014-05-15 | 한국건설기술연구원 | Manufacturing Method of Strand having Fiber Sensor |
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