JPH01100504A - Optical fiber and its manufacture - Google Patents
Optical fiber and its manufactureInfo
- Publication number
- JPH01100504A JPH01100504A JP62257206A JP25720687A JPH01100504A JP H01100504 A JPH01100504 A JP H01100504A JP 62257206 A JP62257206 A JP 62257206A JP 25720687 A JP25720687 A JP 25720687A JP H01100504 A JPH01100504 A JP H01100504A
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- core
- core member
- manufacturing
- refractive index
- 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 50
- 238000004519 manufacturing process Methods 0.000 title claims description 17
- 239000011347 resin Substances 0.000 claims abstract description 22
- 229920005989 resin Polymers 0.000 claims abstract description 22
- 239000013308 plastic optical fiber Substances 0.000 claims abstract description 15
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 11
- 238000005253 cladding Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 15
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 6
- 229910052731 fluorine Inorganic materials 0.000 claims description 6
- 239000011737 fluorine Substances 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims 2
- 239000000853 adhesive Substances 0.000 abstract description 11
- 230000001070 adhesive effect Effects 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 5
- 238000005304 joining Methods 0.000 abstract description 4
- 230000008878 coupling Effects 0.000 abstract 2
- 238000010168 coupling process Methods 0.000 abstract 2
- 238000005859 coupling reaction Methods 0.000 abstract 2
- 239000011162 core material Substances 0.000 description 33
- 238000006116 polymerization reaction Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- DBCAQXHNJOFNGC-UHFFFAOYSA-N 4-bromo-1,1,1-trifluorobutane Chemical compound FC(F)(F)CCCBr DBCAQXHNJOFNGC-UHFFFAOYSA-N 0.000 description 2
- YIVJZNGAASQVEM-UHFFFAOYSA-N Lauroyl peroxide Chemical compound CCCCCCCCCCCC(=O)OOC(=O)CCCCCCCCCCC YIVJZNGAASQVEM-UHFFFAOYSA-N 0.000 description 2
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- STVZJERGLQHEKB-UHFFFAOYSA-N ethylene glycol dimethacrylate Substances CC(=C)C(=O)OCCOC(=O)C(C)=C STVZJERGLQHEKB-UHFFFAOYSA-N 0.000 description 2
- 239000003505 polymerization initiator Substances 0.000 description 2
- WCVOGSZTONGSQY-UHFFFAOYSA-N 2,4,6-trichloroanisole Chemical class COC1=C(Cl)C=C(Cl)C=C1Cl WCVOGSZTONGSQY-UHFFFAOYSA-N 0.000 description 1
- SYFOAKAXGNMQAX-UHFFFAOYSA-N bis(prop-2-enyl) carbonate;2-(2-hydroxyethoxy)ethanol Chemical compound OCCOCCO.C=CCOC(=O)OCC=C SYFOAKAXGNMQAX-UHFFFAOYSA-N 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 1
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical group FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Mechanical Coupling Of Light Guides (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、プラスチック光フアイバ同志の接合方法に係
り、特に、簡単でかつ、接合損失が低い光ファイバの接
合方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for joining plastic optical fibers together, and particularly to a method for joining optical fibers that is simple and has low splicing loss.
従来の接合方法は、特開昭６１−１０２６１１号に記載
のように、コア部材と同等の屈折率を有する液を使用し
、接合するようになっていた。また、特開昭５１−５０
３１号に記載のように、透明度の高い熱硬化性接着剤を
使用し、接合するようになっていた。In the conventional bonding method, as described in JP-A-61-102611, a liquid having the same refractive index as the core member is used for bonding. Also, JP-A-51-50
As described in No. 31, a highly transparent thermosetting adhesive was used for bonding.
上記従来技術は、コア部材と屈折率が等しい場合でも、
成分ゆらぎが、接合剤と、コア部材とで異なる場合に発
生する散乱による伝送損失を低減させる点について配慮
がされておらず、接合損失が大きいという問題があった
。また、耐熱性を必要とする所での接合の信頼性に問題
があった。In the above conventional technology, even when the refractive index is equal to that of the core member,
No consideration was given to reducing transmission loss due to scattering that occurs when the component fluctuations differ between the bonding agent and the core member, resulting in a problem of large bonding loss. Additionally, there was a problem with the reliability of bonding in places where heat resistance is required.
本発明の目的は、伝送損失を低減することと、耐熱性に
優れた光ファイバの接合方法を、提供することにある。An object of the present invention is to reduce transmission loss and to provide a method for joining optical fibers with excellent heat resistance.
上記目的の内、伝送損失を低減させる目的は、光ファイ
バと、光ファイバとの接合面の接着剤として、コア部材
と同じ材料を用いることにより達成される。また、耐熱
性を向上させる目的は、光ファイバのコア部材及び、接
着剤として、熱硬化性樹脂を用いることにより、達成さ
れる。Among the above objects, the object of reducing transmission loss is achieved by using the same material as the core member as the adhesive between the optical fibers and the bonding surfaces of the optical fibers. Moreover, the purpose of improving heat resistance is achieved by using a thermosetting resin as the core member of the optical fiber and the adhesive.
第１の発明の特徴は、光が伝送するコア部と該コア部よ
り屈折率の低いクラッド部より成る光ファイバの複数本
を連結させた光ファイバにおいて、該光ファイバの連結
部が該コア部材からなる光ファイバにある。The first aspect of the invention is characterized in that, in an optical fiber in which a plurality of optical fibers each consisting of a core portion through which light is transmitted and a cladding portion having a lower refractive index than the core portion are connected, the connecting portion of the optical fibers is connected to the core member. The optical fiber consists of
プラスチック光ファイバのコア部材は熱硬化性樹脂であ
ることが望ましい。The core member of the plastic optical fiber is preferably made of thermosetting resin.
プラスチック光ファイバのコア部材はアクリル系の架橋
性樹脂であることが望ましい。The core member of the plastic optical fiber is preferably made of acrylic crosslinkable resin.
クラッド部としてはフッ素系の樹脂を用いても良い。A fluorine-based resin may be used as the cladding portion.
第２の発明の特徴は、光が伝送するコア部と該コア部よ
り屈折率の低いクラッド部より成る光ファイバの複数本
を連結させて得られる光ファイバの製造法において、該
光ファイバの連結部に該コア部材を存在させ、これを硬
化させる光ファイバの製造法にある。A second feature of the invention is a method for manufacturing an optical fiber obtained by connecting a plurality of optical fibers each consisting of a core portion through which light is transmitted and a cladding portion having a lower refractive index than the core portion. The present invention relates to a method of manufacturing an optical fiber in which the core member is present in a portion of the optical fiber and the core member is cured.
プラスチック光ファイバのコア部材は熱硬化性樹脂であ
ることが望ましい。The core member of the plastic optical fiber is preferably made of thermosetting resin.
プラスチック光ファイバのコア部材はアクリル系の架橋
性樹脂であることが望ましい。The core member of the plastic optical fiber is preferably made of acrylic crosslinkable resin.
クラッド部としてはフッ素系の樹脂を用いても良い。A fluorine-based resin may be used as the cladding portion.
第３の発明の特徴は、光が伝送するコア部と該コア部よ
り屈折率の低いクラッド部より成る光ファイバの複数本
を連結させて得られる光ファイバの製造法において、該
光ファイバの連結部に該コア部材を存在させ、これをチ
ューブ内で硬化させる光ファイバの製造法にある。A third feature of the invention is a method for manufacturing an optical fiber obtained by connecting a plurality of optical fibers each including a core portion through which light is transmitted and a cladding portion having a lower refractive index than the core portion, in which the optical fibers are connected. The method of manufacturing an optical fiber includes having the core member present in the tube and curing the core member within the tube.
チューブが上記クラッド部と同程度の屈折率を有するこ
とが望ましい。It is desirable that the tube has a refractive index comparable to that of the cladding.
チューブが熱収縮性であることが望ましい。Preferably, the tube is heat shrinkable.
プラスチック光ファイバのコア部材は熱硬化性樹脂であ
ることが望ましい。The core member of the plastic optical fiber is preferably made of thermosetting resin.
プラスチック光ファイバのコア部材はアクリル系の架橋
性樹脂であることが望ましい。The core member of the plastic optical fiber is preferably made of acrylic crosslinkable resin.
クラッド部としてフッ素系の樹脂を用いても良い。A fluorine-based resin may be used as the cladding portion.
コア部材として、熱硬化性樹脂を用いた場合は、耐熱性
に優れたものとなり、信頼性が向上する。When a thermosetting resin is used as the core member, it has excellent heat resistance and improves reliability.
コア部材と、接着剤とを同じ材料にすることは、コア部
内を通過してきた光が、接着剤内でもコア部内と同様に
通過していくことができるため、接合面における散乱が
少なくなる。また、コア部と接着剤との境面が実質され
なくなるため、成分ゆらぎ等による散乱損失が下さくな
る。さらに、コア部材として、熱硬化性樹脂を用いた場
合は、耐熱性に優れたものとなり、信頼性が向上する。By using the same material for the core member and the adhesive, the light that has passed through the core can pass through the adhesive in the same way as inside the core, which reduces scattering at the joint surface. Furthermore, since there is no substantial boundary between the core part and the adhesive, scattering loss due to component fluctuations, etc., is reduced. Furthermore, when a thermosetting resin is used as the core member, it has excellent heat resistance and reliability is improved.
以下、本発明の一実施例を第１図により説明する。 An embodiment of the present invention will be described below with reference to FIG.
実施例１
光が伝送するコア部１として、メチルメタクリレート７
０重量部、エチレングリコールジメタクリレート２０重
量部、ジエチレングリコールビスアリルカーボネート１
０重量部、それぞれ配合したものに、重合開始剤として
、ラウロイルパーオキサイド０．５重量部加えた材料を
用い、クラッド部２として、四フッ化エチレン〜六フッ
化プロピレン共重合体を用いて作られた光ファイバ３を
接合した例を示す。Example 1 Methyl methacrylate 7 is used as the core part 1 through which light is transmitted.
0 parts by weight, 20 parts by weight of ethylene glycol dimethacrylate, 1 part by weight of diethylene glycol bisallyl carbonate
0 parts by weight, respectively, and 0.5 parts by weight of lauroyl peroxide as a polymerization initiator, and as the cladding part 2, a copolymer of tetrafluoroethylene to hexafluoropropylene was used. An example is shown in which the optical fibers 3 are joined together.
この光ファイバ３を２本用い、クラッド部２材料と同様
の熱収縮チューブ４内でつき合せた。その後、コア部材
料と同じ接着剤５を注入し、加熱して接合した。これに
より接合損失が０．５ｄＢの接合部を得ることができた
。Two of these optical fibers 3 were used and brought together in a heat-shrinkable tube 4 similar to the material of the cladding part 2. After that, the same adhesive 5 as the core material was injected and heated to join. This made it possible to obtain a junction with a junction loss of 0.5 dB.
実施例２
コア部材料として、メチルメタクリレート７０重量部、
エチレングリコールジメタクリレート２０重量部、アク
リル酸ブチル１０重量部それぞれ配合し、重合開始剤と
して、ラウロイルパーオキサイド０．５ 重量部を用い
た。また、クラツド材２として、４フツ化工チレン〜６
フツ化プロピレン共重合体を用いた。Example 2 As a core material, 70 parts by weight of methyl methacrylate,
20 parts by weight of ethylene glycol dimethacrylate and 10 parts by weight of butyl acrylate were each blended, and 0.5 part by weight of lauroyl peroxide was used as a polymerization initiator. In addition, as the cladding material 2, 4F chemically modified tyrene to 6F
A fluorinated propylene copolymer was used.
今回の場合も、実施例１と同様に、熱収縮チュ一ブ４を
用いて、チューブ４内で光ファイバ３同士を接合した。In this case, as in Example 1, the optical fibers 3 were joined together within the tube 4 using the heat shrink tube 4.
この場合、重合時間が短くなり、２合以下でも充分に重
合することが分った。また、接合損失も０．１ｄＢとな
った。In this case, the polymerization time was shortened, and it was found that sufficient polymerization could be achieved even with less than 2 polymerizations. Further, the junction loss was also 0.1 dB.
本発明によれば、耐熱性に優れたプラスチック光ファイ
バを、コネクタを要せず、簡単に接合できる効果がある
。また、接着剤として、コア部材を用いており、接合損
失も小さい効果もある。例えば、本発明の場合２〜３分
で重合するため、接合時間が３〜４分で完了する。また
、接合損失は、０．１ ｄ Ｂ−０，５ｄ Ｂであり、
（はとんど０．２ｄＢ以下）、低損失損金が可能となる
。According to the present invention, plastic optical fibers having excellent heat resistance can be easily joined without requiring a connector. Furthermore, since a core member is used as the adhesive, bonding loss is also reduced. For example, in the case of the present invention, since polymerization takes 2 to 3 minutes, the bonding time is completed in 3 to 4 minutes. In addition, the junction loss is 0.1 d B - 0.5 d B,
(mostly less than 0.2 dB), making it possible to reduce losses.
第１図は、本発明の一実施例の光カップラの縦断面図で
ある。
１・・・コア部、２ クラッド部、３・・・光ファイバ
、４・・・チューブ。FIG. 1 is a longitudinal sectional view of an optical coupler according to an embodiment of the present invention. 1... Core part, 2... Clad part, 3... Optical fiber, 4... Tube.
Claims (1)
ラッド部より成る光ファイバの複数本を連結させた光フ
ァイバにおいて、該光ファイバの連結部が該コア部材か
らなることを特徴とする光ファイバ。 ２、上記プラスチック光ファイバのコア部材が熱硬化性
樹脂であることを特徴とする特許請求の範囲第１項記載
の光ファイバ。 ３、上記プラスチック光ファイバのコア部材がアクリル
系の架橋性樹脂であることを特徴とする特許請求の範囲
第１項記載の光ファイバ。 ４、上記クラッド部としてフッ素系の樹脂を用いたこと
を特徴とする特許請求の範囲第１項記載の光ファイバ。 ５、光が伝送するコア部と該コア部より屈折率の低いク
ラッド部より成る光ファイバの複数本を連結させて得ら
れる光ファイバの製造法において、該光ファイバの連結
部に該コア部材を存在させ、これを硬化させることを特
徴とする光ファイバの製造法。 ６、上記プラスチック光ファイバのコア部材が熱硬化性
樹脂であることを特徴とする特許請求の範囲第５項記載
の光ファイバの製造法。 ７、上記プラスチック光ファイバのコア部材がアクリル
系の架橋性樹脂であることを特徴とする特許請求の範囲
第５項記載の光ファイバの製造法。 ８、上記クラッド部としてフッ素系の樹脂を用いたこと
を特徴とする特許請求の範囲第５項記載の光ファイバの
製造法。 ９、光が伝送するコア部と該コア部より屈折率の低いク
ラッド部より成る光ファイバの複数本を連結させて得ら
れる光ファイバの製造法において、該光ファイバの連結
部に該コア部材を存在させ、これをチューブ内で硬化さ
せることを特徴とする光ファイバの製造法。 １０、上記チューブが上記クラッド部と同程度の屈折率
を有することを特徴とする特許請求の範囲第９項記載の
光ファイバの製造法。 １１、上記チューブが熱収縮性であることを特徴とする
特許請求の範囲第９項記載の光ファイバの製造法。 １２、上記プラスチック光ファイバのコア部材が熱硬化
性樹脂であることを特徴とする特許請求の範囲第９項記
載の光ファイバの製造法。 １３、上記プラスチック光ファイバのコア部材がアクリ
ル系の架橋性樹脂であることを特徴とする特許請求の範
囲第９項記載の光ファイバの製造法。 １４、上記クラッド部としてフッ素系の樹脂を用いたこ
とを特徴とする特許請求の範囲第９項記載の光ファイバ
の製造法。[Claims] 1. In an optical fiber in which a plurality of optical fibers each consisting of a core portion through which light is transmitted and a cladding portion having a lower refractive index than the core portion are connected, the connecting portion of the optical fibers is connected to the core member. An optical fiber characterized by comprising: 2. The optical fiber according to claim 1, wherein the core member of the plastic optical fiber is made of thermosetting resin. 3. The optical fiber according to claim 1, wherein the core member of the plastic optical fiber is an acrylic crosslinkable resin. 4. The optical fiber according to claim 1, wherein a fluorine-based resin is used as the cladding portion. 5. In a method for manufacturing an optical fiber obtained by connecting a plurality of optical fibers each consisting of a core portion through which light is transmitted and a cladding portion having a lower refractive index than the core portion, the core member is attached to the connecting portion of the optical fibers. 1. A method for producing an optical fiber, which comprises making an optical fiber exist and curing the fiber. 6. The method for manufacturing an optical fiber according to claim 5, wherein the core member of the plastic optical fiber is a thermosetting resin. 7. The method for manufacturing an optical fiber according to claim 5, wherein the core member of the plastic optical fiber is an acrylic crosslinkable resin. 8. The method for manufacturing an optical fiber according to claim 5, wherein a fluorine-based resin is used as the cladding portion. 9. In a method for manufacturing an optical fiber obtained by connecting a plurality of optical fibers each consisting of a core portion through which light is transmitted and a cladding portion having a lower refractive index than the core portion, the core member is attached to the connecting portion of the optical fibers. 1. A method for producing an optical fiber, characterized in that the fiber is made to exist in a tube and then cured within a tube. 10. The method for manufacturing an optical fiber according to claim 9, wherein the tube has a refractive index comparable to that of the cladding portion. 11. The method for manufacturing an optical fiber according to claim 9, wherein the tube is heat-shrinkable. 12. The method for manufacturing an optical fiber according to claim 9, wherein the core member of the plastic optical fiber is a thermosetting resin. 13. The method for manufacturing an optical fiber according to claim 9, wherein the core member of the plastic optical fiber is an acrylic crosslinkable resin. 14. The method of manufacturing an optical fiber according to claim 9, wherein a fluorine-based resin is used as the cladding portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62257206A JPH01100504A (en) | 1987-10-14 | 1987-10-14 | Optical fiber and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62257206A JPH01100504A (en) | 1987-10-14 | 1987-10-14 | Optical fiber and its manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01100504A true JPH01100504A (en) | 1989-04-18 |
Family
ID=17303141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62257206A Pending JPH01100504A (en) | 1987-10-14 | 1987-10-14 | Optical fiber and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01100504A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998052079A1 (en) * | 1997-05-12 | 1998-11-19 | Asahi Glass Company Ltd. | Method of joining plastic optical fibers to each other |
| JP2003107284A (en) * | 2001-10-02 | 2003-04-09 | Nhk Sales Co Ltd | Method of splicing plastic optical fiber |
| JP2004126429A (en) * | 2002-10-07 | 2004-04-22 | Mitsubishi Rayon Co Ltd | Plastic optical fiber and plastic optical fiber cable |
-
1987
- 1987-10-14 JP JP62257206A patent/JPH01100504A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998052079A1 (en) * | 1997-05-12 | 1998-11-19 | Asahi Glass Company Ltd. | Method of joining plastic optical fibers to each other |
| US6074511A (en) * | 1997-05-12 | 2000-06-13 | Asahi Glass Company Ltd. | Method of joining plastic optical fibers to each other |
| JP2003107284A (en) * | 2001-10-02 | 2003-04-09 | Nhk Sales Co Ltd | Method of splicing plastic optical fiber |
| JP2004126429A (en) * | 2002-10-07 | 2004-04-22 | Mitsubishi Rayon Co Ltd | Plastic optical fiber and plastic optical fiber cable |
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