JPS5921522B2 - Terminal treatment method for plastic-clad optical fiber - Google Patents
Terminal treatment method for plastic-clad optical fiberInfo
- Publication number
- JPS5921522B2 JPS5921522B2 JP14173677A JP14173677A JPS5921522B2 JP S5921522 B2 JPS5921522 B2 JP S5921522B2 JP 14173677 A JP14173677 A JP 14173677A JP 14173677 A JP14173677 A JP 14173677A JP S5921522 B2 JPS5921522 B2 JP S5921522B2
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- plastic
- clad optical
- treatment method
- core
- 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
Links
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
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
- G02B6/3855—Details of mounting fibres in ferrules; Assembly methods; Manufacture characterised by the method of anchoring or fixing the fibre within the ferrule
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Description
【発明の詳細な説明】
コアに石英、クラッドにシリコン樹脂やフッ化樹脂等を
用いたプラスチッククラッド光ファイバが、低損失で開
口角が広い等の良好な光伝送特性と、製造工程が簡単な
ので安価なものが実現できる可能性を持つということで
、注目を集めている。[Detailed Description of the Invention] Plastic clad optical fiber, which uses quartz for the core and silicone resin or fluorinated resin for the cladding, has good optical transmission characteristics such as low loss and a wide aperture angle, and has a simple manufacturing process. It is attracting attention because it has the potential to create something inexpensive.
しかしこの種の光ファイバのクラッドは硬度があまりな
く、接着剤との結合も弱いので、接続部で光ファイバの
端面を機械的に固定することが困難で、安定した結合部
を得ることが困難であつた。そのため従来次のような方
法で端末処理していた。（１）端部のクラッドを除去し
、コア上にエポキシ樹脂等の硬度の大きい樹脂を塗布す
る。However, the cladding of this type of optical fiber is not very hard and the bond with the adhesive is weak, so it is difficult to mechanically fix the end face of the optical fiber at the joint, making it difficult to obtain a stable joint. It was hot. For this reason, conventional terminal processing was performed using the following method. (1) Remove the cladding at the end and apply a hard resin such as epoxy resin onto the core.
しかしこの方法では塗布した樹脂の屈折率が光ファイバ
本来のクラッドの屈折率よりも大きいため、光をコア内
にとじこめることができなくなる。（２）同じく口出し
したコア上に、金属を蒸着や化学反応によつて付着させ
る。しかし一般に金属は反射損および波長選択性が大で
あるため実用性に乏しい。（３）金属スリーブをかぶせ
る方法もあるが、寸法が微小なので製造が困難である。However, in this method, the refractive index of the applied resin is greater than the refractive index of the original cladding of the optical fiber, making it impossible to confine light within the core. (2) Metal is deposited on the exposed core by vapor deposition or chemical reaction. However, metals are generally impractical due to their large reflection loss and wavelength selectivity. (3) There is also a method of covering with a metal sleeve, but it is difficult to manufacture because the dimensions are minute.
この発明は上記の問題の解決を目的とする。This invention aims to solve the above problems.
そのためこの発明においては、端部のクラッドを除去し
、コア上にアルカリ金属またはアルカリ土類金属の薄膜
をコーティングするという方法をとつた。より詳しく説
明する。Therefore, in the present invention, a method was adopted in which the cladding at the end portions was removed and a thin film of alkali metal or alkaline earth metal was coated on the core. Let me explain in more detail.
第１図の１０はコアで、たとえば石英からなる。１２は
クラッドでシリコン樹脂等からなる。1 is a core made of quartz, for example. A cladding 12 is made of silicone resin or the like.
第２図のように端部のクラッド１２を除去してコア１０
を口出しする。その上にＬｉＦやＮａＦ等のアルカリ金
属のフッ化物や、ＭｇＦ２やＣａ鳥等のアルカリ土類金
属のフッ化物の薄膜１４をコーティングする。薄膜１４
のコーティングには真空蒸着、スパッタリング、デイピ
ング等の公知の薄膜技術を利用できる。上記のフッ化物
はコア１０上に強固に付着する。As shown in FIG. 2, the cladding 12 at the end is removed and the core 10 is
say something. A thin film 14 of an alkali metal fluoride such as LiF or NaF or an alkaline earth metal fluoride such as MgF2 or Ca is coated thereon. Thin film 14
Known thin film techniques such as vacuum evaporation, sputtering, and dipping can be used for coating. The above fluoride adheres firmly onto the core 10.
またフッ化物は屈折率が石英より小さい。たとえば石英
の屈折率は波長０．８μｍで１．４５３で、ＭｇＦ２は
１．３８である。薄膜の厚さは、光の浸み出しがない程
度の約１μｍくらいあれば十分である。Fluoride also has a lower refractive index than quartz. For example, the refractive index of quartz is 1.453 at a wavelength of 0.8 μm, and that of MgF2 is 1.38. It is sufficient that the thickness of the thin film is about 1 μm, which prevents light from seeping out.
この発明の効果を述べる。The effects of this invention will be described.
（１）コア１０上にそれよりも低屈折率のフッ化物の薄
膜をコーテイングするので、処理した後は他の物質（た
とえばｖみぞコネクタ、エポキシ樹脂等）に接触しても
、光損失の増加をまねくことはない。(1) A thin film of fluoride with a lower refractive index is coated on the core 10, so even if it comes into contact with other materials (e.g. V-groove connector, epoxy resin, etc.) after treatment, optical loss will increase. It will not lead to
（２）フツ化物をコーテイングした端末は、接着剤での
固定も容易で、ガラスクラツドの光フアイバと同等な取
りあつかいができる。(2) Fluoride-coated terminals can be easily fixed with adhesive and can be handled in the same way as glass-clad optical fibers.
第１図、第２図、第３図はこの発明の処理方法を工程の
順に示す説明図である。
１０：コア、１２：クラツド、１４：薄膜。FIG. 1, FIG. 2, and FIG. 3 are explanatory diagrams showing the processing method of the present invention in the order of steps. 10: core, 12: cladding, 14: thin film.
Claims (1)
上に、アルカリ金属またはアルカリ土類金属のフッ化物
の薄膜１４をコーティングすることを特徴とするプラス
チッククラッド光ファイバの端末処理方法。1 Remove the cladding 12 at the end and expose the core 10
A method for terminating a plastic clad optical fiber, comprising coating a thin film 14 of an alkali metal or alkaline earth metal fluoride thereon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14173677A JPS5921522B2 (en) | 1977-11-26 | 1977-11-26 | Terminal treatment method for plastic-clad optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14173677A JPS5921522B2 (en) | 1977-11-26 | 1977-11-26 | Terminal treatment method for plastic-clad optical fiber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5474452A JPS5474452A (en) | 1979-06-14 |
| JPS5921522B2 true JPS5921522B2 (en) | 1984-05-21 |
Family
ID=15299002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14173677A Expired JPS5921522B2 (en) | 1977-11-26 | 1977-11-26 | Terminal treatment method for plastic-clad optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5921522B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6429807A (en) * | 1987-07-24 | 1989-01-31 | Furukawa Electric Co Ltd | Fusion connecting method for plastic clad optical fiber |
| JP2008250183A (en) * | 2007-03-30 | 2008-10-16 | Fujifilm Corp | Optical device |
| JP2008250184A (en) * | 2007-03-30 | 2008-10-16 | Fujifilm Corp | Fiber light source device |
| JP2008268755A (en) * | 2007-04-24 | 2008-11-06 | Fujifilm Corp | Optical module |
| JP6295305B1 (en) * | 2016-10-04 | 2018-03-14 | 株式会社フジクラ | Optical fiber and fiber laser |
| JP6357207B2 (en) | 2016-10-04 | 2018-07-11 | 株式会社フジクラ | Optical fiber and fiber laser |
-
1977
- 1977-11-26 JP JP14173677A patent/JPS5921522B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5474452A (en) | 1979-06-14 |
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