JPH0428082B2 - - Google Patents
Info
- Publication number
- JPH0428082B2 JPH0428082B2 JP57140841A JP14084182A JPH0428082B2 JP H0428082 B2 JPH0428082 B2 JP H0428082B2 JP 57140841 A JP57140841 A JP 57140841A JP 14084182 A JP14084182 A JP 14084182A JP H0428082 B2 JPH0428082 B2 JP H0428082B2
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- metal pipe
- thin film
- core wire
- 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.)
- Expired - Lifetime
Links
- 239000013307 optical fiber Substances 0.000 claims description 41
- 229910052751 metal Inorganic materials 0.000 claims description 28
- 239000002184 metal Substances 0.000 claims description 28
- 239000010409 thin film Substances 0.000 claims description 16
- 150000001875 compounds Chemical class 0.000 claims description 7
- 229910052736 halogen Inorganic materials 0.000 claims description 7
- 150000002367 halogens Chemical class 0.000 claims description 7
- 229920000642 polymer Polymers 0.000 claims description 7
- 239000013078 crystal Substances 0.000 claims description 6
- 239000005383 fluoride glass Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 229910021607 Silver chloride Inorganic materials 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- LYQFWZFBNBDLEO-UHFFFAOYSA-M caesium bromide Chemical compound [Br-].[Cs+] LYQFWZFBNBDLEO-UHFFFAOYSA-M 0.000 description 4
- -1 polytetrafluoroethylene Polymers 0.000 description 4
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 4
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 4
- 229920001577 copolymer Polymers 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 229910016569 AlF 3 Inorganic materials 0.000 description 2
- 229910016036 BaF 2 Inorganic materials 0.000 description 2
- 229910017768 LaF 3 Inorganic materials 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- ADZWSOLPGZMUMY-UHFFFAOYSA-M silver bromide Chemical compound [Ag]Br ADZWSOLPGZMUMY-UHFFFAOYSA-M 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 229920002493 poly(chlorotrifluoroethylene) Polymers 0.000 description 1
- 239000005023 polychlorotrifluoroethylene (PCTFE) polymer Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Landscapes
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Surface Treatment Of Glass Fibres Or Filaments (AREA)
Description
【発明の詳細な説明】
この発明はフツ化物ガラスやハロゲン元素を有
するイオン結晶などから形成された非石英系の赤
外用光フアイバ心線の構造に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the structure of a non-silica infrared optical fiber core formed from fluoride glass, ionic crystal containing a halogen element, or the like.
ZrF4、BaF2、LaF3、AlF3、NaFなどのフツ
化物ガラスやAgCl、NaCl、AgBr、CsI、CsBr、
TICl、TIBrなどのハロゲン元素を有するイオン
結晶からなる光フアイバは、赤外域での透過性に
すぐれ、主に赤外用光フアイバとしてのCO2レー
ザ光などのエネルギー伝送用にも使用されてい
る。これらの光フアイバは、石英系光フアイバと
は異なり、通常ポリテトラフルオロエチレン樹脂
やテトラフルオロエチレン−ヘキサフルオロプオ
ピレン共重合体などのフツ素樹脂製のパイプ内に
ゆるく収容され、光フアイバ心線とされている。
このフツ素樹脂製パイプは、クラツドとしてでは
なく、補強用として用いられているものであり、
光フアイバの外側に存在する空気がクラツドとし
て機能する。 Fluoride glasses such as ZrF 4 , BaF 2 , LaF 3 , AlF 3 , NaF, AgCl, NaCl, AgBr, CsI, CsBr,
Optical fibers made of ionic crystals containing halogen elements such as TICl and TIBr have excellent transparency in the infrared region, and are mainly used as infrared optical fibers for transmitting energy such as CO 2 laser light. Unlike silica-based optical fibers, these optical fibers are usually loosely housed in a pipe made of a fluororesin such as polytetrafluoroethylene resin or tetrafluoroethylene-hexafluoropylene copolymer, and are used as optical fiber cores. It is said that
This fluororesin pipe is not used as a cladding, but as a reinforcement.
Air existing outside the optical fiber acts as a cladding.
ところで、このような構造の光フアイバ心線で
は、光フアイバが切断したりあるいは曲折られた
りして透過光である赤外光が漏出した場合には上
記パイプが赤外光によつて焼けてしまい、赤外光
が直接外部に漏出してしまうことがあつた、この
ため、上記フツ素樹脂製パイプに代えて可撓性に
富むアルミニウムやステンレススチール製の薄肉
金属パイプ内に上記光フアイバを収容する構造の
光フアイバ心線が提案されている。しかし、この
金属パイプを用いるものでは、上述の光の漏出は
防止できるが、光フアイバと金属パイプとが直接
接触すると、光フアイバが上述のように金属ハロ
ゲン化物で形成されているため、イオン交換反応
はハロゲン元素の攻撃等を受けて金属パイプが
徐々に腐食されてしまい、補強の要をなさなくな
るとともに光フアイバ自体も侵されて光を伝送で
きなくなる欠点が生じる。 By the way, in an optical fiber core wire having such a structure, if the optical fiber is cut or bent and the transmitted infrared light leaks out, the pipe may be burnt by the infrared light. However, infrared light sometimes leaked directly to the outside. Therefore, instead of the fluororesin pipe, the optical fiber was housed in a highly flexible thin metal pipe made of aluminum or stainless steel. An optical fiber core wire with a structure has been proposed. However, although this type of metal pipe can prevent the above-mentioned leakage of light, when the optical fiber and the metal pipe come into direct contact, ion exchange occurs because the optical fiber is made of metal halide as described above. The reaction causes the metal pipe to gradually corrode due to attack by the halogen element, which eliminates the need for reinforcement, and also causes the drawback that the optical fiber itself is also corroded, making it impossible to transmit light.
この発明は上記事情に鑑みてなされたもので、
補強に金属パイプを用いた場合において、金属の
腐食が防止でき、長期にわたつて光フアイバ心線
からの透過光の外部への漏出が防止できる構造の
光フアイバ心線を提供することを目的とし、光フ
アイバ素線を収容する金属パイプの内面に高分子
化合物よりなる厚さ10μｍ〜0.5mmの薄膜を密着し
て形成したことを特徴とするものである。 This invention was made in view of the above circumstances,
The purpose of the present invention is to provide an optical fiber core wire having a structure that can prevent metal corrosion and prevent leakage of transmitted light from the optical fiber core wire to the outside over a long period of time when a metal pipe is used for reinforcement. , is characterized in that a thin film of a polymer compound with a thickness of 10 μm to 0.5 mm is closely formed on the inner surface of a metal pipe that houses an optical fiber wire.
以下、図面を参照してこの発明を詳しく説明す
る。 Hereinafter, the present invention will be explained in detail with reference to the drawings.
図面はこの発明の光フアイバ心線の一例を示す
もので、図中符号１はZrF4、BaF2、LaF3、
AlF3、NaFなどのフツ化物ガラスあるいは
NaCl、AgCl、AgBr、CsI、CsBr、TICl、
TIBr、KBrなどのハロゲン元素を有するイオン
結晶から形成された光フアイバ素線である。この
光フアイバ素線１はコアとして機能するものであ
る。そして、この光フアイバ素線１は、アルミニ
ウムやステンレススチールなどで形成され、可撓
性を有する金属パイプ２内にゆるく空気層３を介
して収納されている。さらに、金属パイプ２の内
壁面には、高分子化合物よりなる薄膜４が密着し
て設けられている。この薄膜４には、通常の熱可
塑性樹脂および熱硬化性樹脂が用いられ、特に耐
熱性、耐食性、および非粘着性の点からポリテト
ラフルオロエチレン樹脂やポリクロロトリフルオ
トエチレン樹脂、テトラフルオロエチレン−ヘキ
サフルオロプロピレン共重合体などのフツ素樹脂
が好ましく用いられる。また、薄膜４の膜厚は、
10μｍ〜0.5mmとされる。膜厚が0.5mmを越えると
光フアイバ素線１から漏出した光の大部分が薄膜
４に吸収され、金属パイプ２内表面で反射され
ず、金属パイプ２による反射効果が低下するとと
もに薄膜４が焼けてしまう。また、10μｍ未満で
は薄膜４自体の強度が充分でなく、光フアイバ心
線を折り曲げた時に損傷したり、あるいは薄膜４
に部分的にピンホール等が生じて金属パイプ２が
腐食される恐れがある。薄膜４の形成法として
は、通常のコーテイング法が適宜用いられる。 The drawing shows an example of the optical fiber core wire of the present invention, and the reference numeral 1 in the drawing shows ZrF 4 , BaF 2 , LaF 3 ,
Fluoride glasses such as AlF 3 and NaF or
NaCl, AgCl, AgBr, CsI, CsBr, TICl,
It is an optical fiber wire formed from an ionic crystal containing a halogen element such as TIBr or KBr. This optical fiber wire 1 functions as a core. The optical fiber wire 1 is made of aluminum, stainless steel, or the like, and is housed in a flexible metal pipe 2 with an air layer 3 loosely interposed therebetween. Furthermore, a thin film 4 made of a polymer compound is provided in close contact with the inner wall surface of the metal pipe 2. For this thin film 4, ordinary thermoplastic resins and thermosetting resins are used, and in particular, from the viewpoint of heat resistance, corrosion resistance, and non-adhesion, polytetrafluoroethylene resin, polychlorotrifluoroethylene resin, tetrafluoroethylene resin, etc. Fluororesins such as hexafluoropropylene copolymers are preferably used. In addition, the thickness of the thin film 4 is
It is 10 μm to 0.5 mm. If the film thickness exceeds 0.5 mm, most of the light leaking from the optical fiber 1 will be absorbed by the thin film 4 and will not be reflected on the inner surface of the metal pipe 2, reducing the reflection effect of the metal pipe 2 and causing the thin film 4 to It gets burnt. In addition, if the thickness is less than 10 μm, the strength of the thin film 4 itself is not sufficient, and the thin film 4 may be damaged when bent.
There is a possibility that pinholes or the like may be formed partially in the metal pipe 2 and the metal pipe 2 may be corroded. As a method for forming the thin film 4, a normal coating method can be used as appropriate.
このような構造の光フアイバ心線にあつては、
光フアイバ素線１と金属パイプ２との間に高分子
化合物よりなる薄膜４が介在し、これによつて両
者が絶縁されているので、光フアイバ素線１と金
属パイプ２とが直接接触することがなく、金属パ
イプ２の腐食が防止されるとともに万一光フアイ
バ素線１が断線したりして光フアイバ素線１から
光が漏れても、薄肉４の膜厚が十分に薄いので漏
出した光はすべて金属パイプ２に達し、金属パイ
プ２内表面で反射され、心線の外に光は漏出せ
ず、また薄肉４が漏出光で焼けることもない。 For optical fiber core wires with this structure,
A thin film 4 made of a polymer compound is interposed between the optical fiber 1 and the metal pipe 2, and the two are insulated, so that the optical fiber 1 and the metal pipe 2 are in direct contact with each other. This prevents corrosion of the metal pipe 2, and even if the optical fiber 1 breaks and light leaks from the optical fiber 1, the thin wall 4 has a sufficiently thin film thickness to prevent leakage. All the light reaches the metal pipe 2 and is reflected on the inner surface of the metal pipe 2, so that no light leaks out of the core wire, and the thin wall 4 is not burned by the leaked light.
以下に実験例を示し、この発明を具体的に説明
する。 EXAMPLES The present invention will be specifically explained using experimental examples below.
直径１mmのAgClよりなるCO2レーザ光伝送用
光フアイバ素線を用意した。この光フアイバ素線
を、
(A) 内径２mm、外径５mmのアルミニウムパイプに
収容して心線とし、この心線を半径10mmとして
繰り返し屈曲を行つたところ、300回程度の屈
曲で当初の0.4dB／ｍの伝送損失が4dB／ｍに
まで増加した。しかし、光の外部への漏出は認
められなかつた。この心線を20日間放置したと
ころ、素線を形成するAgClが金属パイプのAl
によつて腐食され、光が全く透過しない状態に
なつた。
An optical fiber for CO 2 laser beam transmission made of AgCl and having a diameter of 1 mm was prepared. (A) This optical fiber was housed in an aluminum pipe with an inner diameter of 2 mm and an outer diameter of 5 mm to form a core wire, and this core wire was bent repeatedly with a radius of 10 mm. After about 300 bends, the original wire was 0.4 The transmission loss of dB/m increased to 4 dB/m. However, no leakage of light to the outside was observed. When this core wire was left for 20 days, the AgCl forming the strands was removed from the Al of the metal pipe.
It has become corroded and no light can pass through it at all.
(B) 内径２mm、外径５mmのポリテトラフルオロエ
チレン樹脂製パイプに収容し、同様の繰り返し
屈曲を行つたところ屈曲部から光が漏出し、最
終的には上記パイプも焼損してしまつた。(B) When the tube was housed in a polytetrafluoroethylene resin pipe with an inner diameter of 2 mm and an outer diameter of 5 mm, and the same bending was performed repeatedly, light leaked from the bent portion, and eventually the pipe was burnt out.
(C) 内径２mm、外径５mmで、内壁面に高分子化合
物よりなる薄膜としてテトラフルオロエチレン
−ヘキサフルオロプロピレン共重合体を200μ
ｍの厚さに流動浸漬法によつてコーテイングし
たアルミニウムパイプ内に収容し、同様の繰り
返し屈曲を行つたが光の漏出は全く認められな
かつた。また、20日間放置したが心線の伝送特
性は全く変化しなかつた。(C) With an inner diameter of 2 mm and an outer diameter of 5 mm, 200μ of tetrafluoroethylene-hexafluoropropylene copolymer is coated as a thin film made of a polymer compound on the inner wall surface.
The tube was housed in an aluminum pipe coated with a fluidized immersion method to a thickness of 1.5 m, and was repeatedly bent in the same manner, but no leakage of light was observed. Furthermore, the transmission characteristics of the core wire did not change at all after being left for 20 days.
以上説明したように、この発明の光をフアイバ
心線は、フツ化物ガラスまたはハロゲン元素を有
するイオン結晶からなる光フアイバ素線をゆるく
収容する金属パイプの内面に高分子化合物よりな
る厚さ10μｍ〜0.5mmの薄膜を密着して形成したも
のであるので、万一光フアイバ素線が断線したり
して、光が素線から漏出しても金属パイプ内表面
で反射され、光フアイバ心線から外部へ漏出する
ことがない。また、薄膜が形成されているので、
素線と金属パイプとが密着とが密着することがな
く、したがつて、光フアイバ素線がフツ化物ガラ
スやハロゲン元素を有するイオン結晶などで形成
されているにもかかわらず、金属パイプもしくは
素線が腐食されることがなく、伝送特性の低下が
なく、また素線の保護が長期にわたつて行われ
る。 As explained above, the optical fiber core wire of the present invention is made of a polymer compound on the inner surface of a metal pipe that loosely accommodates the optical fiber wire made of fluoride glass or an ionic crystal containing a halogen element. Since the 0.5 mm thin film is formed in close contact with the optical fiber, even if the optical fiber wire breaks and light leaks from the wire, it will be reflected on the inner surface of the metal pipe and will not be released from the optical fiber core wire. No leakage to the outside. In addition, since a thin film is formed,
The strands and metal pipes do not come into close contact with each other, and therefore, even though the optical fiber strands are made of fluoride glass or ionic crystals containing halogen elements, metal pipes or bare metal pipes do not come into close contact with each other. The wires are not corroded, the transmission characteristics do not deteriorate, and the wires are protected for a long time.
図面はこの発明の光フアイバ心線の一例を示す
断面図である。
１……光フアイバ素線、２……金属パイプ、３
……空気層、４……高分子化合物よりなる薄膜。
The drawing is a sectional view showing an example of the optical fiber core wire of the present invention. 1...Optical fiber wire, 2...Metal pipe, 3
...Air layer, 4...Thin film made of a polymer compound.
Claims (1)
イオン結晶からなる光フアイバ素線を金属パイプ
内にゆるく収容した構造の赤外用光フアイバ心線
において、 前記金属パイプの内面には、この金属パイプと
前記光フアイバ素線とを絶縁する高分子化合物か
らなる厚さ10μｍ〜0.5mmの薄膜が密着して形成さ
れていることを特徴とする赤外用光フアイバ心
線。[Scope of Claims] 1. An infrared optical fiber core wire having a structure in which an optical fiber made of fluoride glass or an ionic crystal containing a halogen element is loosely housed in a metal pipe, wherein the inner surface of the metal pipe has the following features: An infrared optical fiber core wire, characterized in that a thin film of 10 μm to 0.5 mm thick made of a polymer compound and insulating the metal pipe and the optical fiber wire is formed in close contact with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57140841A JPS5930503A (en) | 1982-08-13 | 1982-08-13 | Optical fiber core for infrared rays |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57140841A JPS5930503A (en) | 1982-08-13 | 1982-08-13 | Optical fiber core for infrared rays |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5930503A JPS5930503A (en) | 1984-02-18 |
| JPH0428082B2 true JPH0428082B2 (en) | 1992-05-13 |
Family
ID=15277956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57140841A Granted JPS5930503A (en) | 1982-08-13 | 1982-08-13 | Optical fiber core for infrared rays |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5930503A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4860818A (en) * | 1987-09-21 | 1989-08-29 | Ube Industries, Ltd. | Die casting apparatus |
| JPH0667545B2 (en) * | 1988-06-10 | 1994-08-31 | 宇部興産株式会社 | Injection molding machine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51120735A (en) * | 1975-03-25 | 1976-10-22 | Siemens Ag | Core wire for optical cable |
| JPS57104103A (en) * | 1980-12-19 | 1982-06-29 | Furukawa Electric Co Ltd:The | Production of optical fiber with metallic pipe |
-
1982
- 1982-08-13 JP JP57140841A patent/JPS5930503A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51120735A (en) * | 1975-03-25 | 1976-10-22 | Siemens Ag | Core wire for optical cable |
| JPS57104103A (en) * | 1980-12-19 | 1982-06-29 | Furukawa Electric Co Ltd:The | Production of optical fiber with metallic pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5930503A (en) | 1984-02-18 |
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