JPS5978949A - Coating glass for optical fiber - Google Patents
Coating glass for optical fiberInfo
- Publication number
- JPS5978949A JPS5978949A JP58032411A JP3241183A JPS5978949A JP S5978949 A JPS5978949 A JP S5978949A JP 58032411 A JP58032411 A JP 58032411A JP 3241183 A JP3241183 A JP 3241183A JP S5978949 A JPS5978949 A JP S5978949A
- Authority
- JP
- Japan
- Prior art keywords
- glass
- optical fiber
- water resistance
- core
- coating
- 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.)
- Granted
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
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
- C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
- C03C3/093—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium containing zinc or zirconium
-
- 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
- C03C13/00—Fibre or filament compositions
- C03C13/04—Fibre optics, e.g. core and clad fibre compositions
- C03C13/045—Silica-containing oxide glass compositions
- C03C13/046—Multicomponent glass compositions
-
- 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
- C03C25/106—Single coatings
- C03C25/1061—Inorganic coatings
-
- 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
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
- C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
-
- 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
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
- C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
- C03C3/087—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal containing calcium oxide, e.g. common sheet or container glass
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Optics & Photonics (AREA)
- Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Glass Compositions (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は光フアイバー用被覆ガラスに係り、特に芯ガラ
スと被覆ガラスとから形成される光フアイバー用被覆ガ
ラスの改良に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a coated glass for an optical fiber, and more particularly to an improvement in a coated glass for an optical fiber formed from a core glass and a coated glass.
一般に光ファイバーは芯の周囲にそれよりも小さい屈折
率を有する被１５層が設けられて成るものでファイバー
の一端から芯に入射させた光情報を、芯と被覆との境界
面での全反射を利用して芯内に閉じ込めファイバーの他
端へ伝えようとするものである。Generally, an optical fiber consists of a core and 15 coating layers with a smaller refractive index around the core.The optical fiber enters the core from one end of the fiber and undergoes total reflection at the interface between the core and the coating. The idea is to use this to confine it within the core and transmit it to the other end of the fiber.
ところで従来、この種の光ファイバー例えば光通信用多
成分系ガラスファイバーとしてＮａ２０２０俤、ＣａＯ
９ｆＡおよび５ｉ０２７１ ’Ｉｙ （いずれも重量比
）からなる芯ガラスに、 Ｎａ２Ｏ２２’４、ｃａｏ
ａ、ｓ ％および５ｉｎ２７４．５ ％ （いずれも重
量比）からなる被覆ガラスを被覆したものが用いられて
いる。しかしこのガラスファイバーにおいてはアルカリ
含有量が多いため低損失化し易い反面、アルカリ成分が
外部に溶出し易いため耐水性および耐侯性が劣ると云う
欠点がある。By the way, conventionally, as this type of optical fiber, for example, multi-component glass fiber for optical communication, Na2020, CaO
Core glass consisting of 9fA and 5i0271'Iy (both weight ratios), Na2O22'4, cao
A coated glass consisting of a, s% and 5in274.5% (both weight ratios) is used. However, since this glass fiber has a high alkali content, it is easy to reduce the loss, but on the other hand, the alkali component tends to be eluted to the outside, so it has a disadvantage of poor water resistance and weather resistance.
本発明者等は上記欠点を解消するために鋭意研究を重ね
た結果、被覆材料として５ｉ０２、アルカリ金属酸化物
、Ｍ２Ｏ６、およびＺｎＯ、ＺｒＯ２。The inventors of the present invention have conducted intensive research to solve the above-mentioned drawbacks, and as a result, they have developed coating materials such as 5i02, alkali metal oxides, M2O6, ZnO, and ZrO2.
ＴｉＯ２・のうちから選ばれた少なくとも１種の成分を
含み、かつこれらの成分値を規定した被覆ガラスを使用
することによって、アルカリ成分の外部溶出を少くし、
耐水性および耐候性の優れている光フアイバー用被覆ガ
ラスが得られること、およびこの光フアイバー用被覆ガ
ラスを用いて尤ファイバー用芯ガラスを被覆することに
より、耐水）ｊユ、剛・虻件の優れた光ファイバーが得
られることを見い出した。By using a coated glass containing at least one component selected from TiO2 and having defined values of these components, external elution of alkaline components is reduced,
It is possible to obtain a coating glass for optical fibers that has excellent water resistance and weather resistance, and by coating a core glass for fibers with this coating glass for optical fibers, it is possible to obtain coating glass for optical fibers that has excellent water resistance and weather resistance. It was discovered that an excellent optical fiber could be obtained.
本発明は上記の知見に基いてなされたもので、その目的
とするところは耐水性および耐候性の優れた光フアイバ
ー用被覆ガラスを提供するにある。The present invention has been made based on the above findings, and its object is to provide a coated glass for optical fibers having excellent water resistance and weather resistance.
本発明による光フアイバー用被覆ガラスは重量比にて５
ｉｎ２６０〜８０俤、アルカリ金属酸化物９〜１７％、
Ａｌ２Ｏ５０，５〜１０％およびＺｎＯ。The coated glass for optical fiber according to the present invention has a weight ratio of 5
in260-80tou, alkali metal oxide 9-17%,
Al2O50,5-10% and ZnO.
ＺｒＯ２，ＴｉＯ２のうちから選ばれた少なくとも１種
７１％μ下を含むことを特徴とするものである。It is characterized by containing at least one selected from ZrO2 and TiO2 with a particle diameter of 71% μ or less.
さらにまた本発明による光フアイバー用被覆ガラスは、
重量比にてＳｉｎ、２６０〜８０チ、アルカリＱ Ｍ
ｉ＆ 化物９〜１７％、Ａ（１２０ｓ ０．５〜１０多
、ＺｎＯ、ＺｒＯ２、ＴｌＯ２のうちから選ハレタ少な
くとも１種７％μ下およびＭｇ０４ ％ ＩＪ、下を含
むことを特徴とするものである。Furthermore, the coated glass for optical fiber according to the present invention includes:
Weight ratio: Sin, 260 to 80 inches, alkali Q M
It is characterized by containing 9 to 17% of i& compound, 0.5 to 10% of A(120s), 7% of at least one selected from among ZnO, ZrO2, and TlO2, and 7% of Mg04% IJ. .
次に本発明において光フアイバー用被覆ガラスの各成分
値を前記の如く限定した理由について述べる。Next, the reason why the values of each component of the coated glass for optical fiber in the present invention are limited as described above will be described.
ｆｌｌ ５ｉ０２
Ｓｉ０２は被覆の骨格を形成するものであり、その含有
量が６０重量％未満では耐水性が低下し、一方８０重、
ｔ％を超えると、高温粘性が増加するので好ましくない
。fll 5i02 Si02 forms the skeleton of the coating, and if its content is less than 60% by weight, water resistance decreases;
If it exceeds t%, high temperature viscosity increases, which is not preferable.
＋２１ Ａｇ２Ａｇ
２Ｏ５Ａは耐水性の改善効果を有するものである。Ａｌ
２Ｏ３の含有量が０．５重量％未満では所期の効果が充
分達成できず、かといつ大１０重量％を超えると失透し
易ぐなるからである。+21 Ag2Ag 2O5A has the effect of improving water resistance. Al
This is because if the content of 2O3 is less than 0.5% by weight, the desired effect cannot be fully achieved, and if it exceeds 10% by weight, devitrification tends to occur.
（３）アルカリ金属酸化物 アルカリ金属酸化物は主にＮａ２Ｏ、Ｋ２Ｏ。(3) Alkali metal oxide Alkali metal oxides are mainly Na2O and K2O.
Ｌｉ２Ｏからなり、網目修飾酸化物として作用する。It consists of Li2O and acts as a network modifying oxide.
アルカリ金属酸化物の含有量が９重量係未満では失透し
易くなり、１７重量％を超えると耐水性が低下し所期の
・反末を（ｉ宿たす被覆が得られない。If the alkali metal oxide content is less than 9% by weight, devitrification tends to occur, and if it exceeds 17% by weight, the water resistance decreases and a coating that retains the desired properties cannot be obtained.
（４１ＺｎＯ、ＺｒＯ２、ＴｉＯ２ これら酸物の添加は、特に耐水性の改善に効果がある。(41ZnO, ZrO2, TiO2 Addition of these acids is particularly effective in improving water resistance.
しかしてこの成分は１種もしくは２種μＬの混合系でも
よい。この添加駄を増すとともに効果も増加するが７％
以上の添加は、脈理が生じる。However, the lever component may be a single type or a mixed system of two types in μL. As the amount of this additive increases, the effect also increases by 7%.
If the above amount is added, striae will occur.
次に本発明による尤ファイバー用被覆ガラスを用いて光
フアイバー用芯ガラスを被覆して光情報を伝送する）Ｙ
；ファイバーを形成する実施例について説明する。本発
明による光フアイバー用被覆ガラスにより被覆される光
フアイバー用芯ガラスとしては、例えば屈折率、膨張係
数、高温粘性および失透傾向等の緒特性が所望の光ファ
イバーを形成するのに適しているものであれば、任意の
成分を有する光フアイバー用芯ガラスを用いることがで
きることは勿論であるが、この実施例においては光フア
イバー用芯ガラスとして例えば重量比にて５ｔｏ２３５
〜６５％ （このうち３０％以内はＱｅ０２て１准換し
てもよい）と。Next, the optical fiber coating glass according to the present invention is used to coat the optical fiber core glass to transmit optical information)
An example of forming a fiber will be described. The optical fiber core glass to be coated with the optical fiber coating glass of the present invention is one that has properties such as refractive index, expansion coefficient, high temperature viscosity, and devitrification tendency that are suitable for forming a desired optical fiber. If so, it is of course possible to use a core glass for optical fiber having any component, but in this example, the core glass for optical fiber is, for example, 5 to 235 in weight ratio.
~65% (within 30% may be converted into Qe02).
アルカリ金４酸化物１０〜２３％と、Ｃａ０２〜１２％
およびｌ：１ａ０５〜３５チの少くとも１種とを含む芯
ガラスを用い、この芯ガラスを本発明による被覆ガラス
にて破口して形成する光ファイバーについて説明する。Alkali gold tetraoxide 10-23% and Ca02-12%
An optical fiber formed by using a core glass containing at least one of the following:
表１〜表３に示す如く、組成割合がそれぞれ異なる光フ
アイバー用芯ガラスおよび本発明による被覆ガラスを二
重ルツボ法により、８００〜１０００℃の温度下で綜引
きして１０種の光ファイバー（芯径８０μ、被覆径１５
０μ）を得た。As shown in Tables 1 to 3, core glasses for optical fibers with different composition ratios and coated glasses according to the present invention were drawn by the double crucible method at temperatures of 800 to 1000°C to produce 10 types of optical fibers (core glasses). Diameter 80μ, coating diameter 15
0 μ) was obtained.
しかして、得られた各光ファイバーの芯及び被覆におけ
る屈折率（ｎ）、熱膨張係数（−１耐水性、耐風化性、
１０ ．１０ ．１０ボイズになる温度、並びに失透傾
向を調べた０その結果を同表１〜表３に併記した。Therefore, the refractive index (n), thermal expansion coefficient (-1 water resistance, weathering resistance,
10. 10. The results of examining the temperature at which 10 voids occur and the tendency for devitrification are also listed in Tables 1 to 3.
なお、耐水性、耐風化性、及び失透傾向は次のような試
験により求めた０
１）耐水性；目開き０，５−のＪＩＳ標準簡にパスし、
目開き０．３閂の同標準篩にパスしない粉末試料５．０
ｇを１００ ｍｅの蒸留水に浸し沸騰浴中で１時間加熱
した後、その溶液を０．０１ Ｎ−１１，ｃ／溶液で滴
定し、その滴定したＦｉ （ｍｆりで耐水性の優・劣を
求める。In addition, water resistance, weathering resistance, and devitrification tendency were determined by the following tests.
Powder sample that does not pass the same standard sieve with a mesh size of 0.3 bar 5.0
After immersing g in 100 me distilled water and heating it in a boiling bath for 1 hour, the solution was titrated with 0.01 N-11,c/solution, and the titrated Fi (mf) was used to determine water resistance. seek.
２）耐風化性；ガラス表面にできるヘイズ（Ｈａｚｅ）
を観察し。2) Weathering resistance: Haze that forms on the glass surface
Observe.
８に−１６上りヘイズのできにくいものを ＡＳＫ−
１６と同程度のものを ＡＢＳＫ−１６よりヘ
イズのでき易いものを Ｂと評価する。8 -16 ASK-
Items that are equivalent to ABSK-16 are rated as B. Items that are more likely to produce haze than ABSK-16 are rated as B.
３）失透傾向；８００℃で１５時間加熱、並びに１１０
０℃で１５時間加熱して
結晶の析出しないものを ３表面に結晶を
析出するものを ５表面及び内部に結晶を析出
するものを Ｃと評価する〇
表１〜表３の実／Ａｉ例１〜実施例１０にはそれぞれ本
発明による光フアイバー用被覆ガラスの成分、 ＦＭ分
値および特性が示されている。これらのものを従来の光
フアイバー用被覆ガラスと比較するために、例えば特願
昭５２−１５４５３５号（特開昭５４−８７２３６号）
公報中に記載された表１〜表３の各実施例１〜実施例９
の各被芭ガラスの成分、成分値および特性がそれぞれ表
４に参考例１〜参考例９として示されている。3) Tendency to devitrify; heating at 800°C for 15 hours and 110°C
Those that do not precipitate crystals after heating at 0℃ for 15 hours are evaluated as 3. Those that precipitate crystals on the surface. 5. Those that precipitate crystals on the surface and inside are evaluated as C. 〇 Tables 1 to 3 Examples/Ai Example 1 - Example 10 each show the components, FM value, and characteristics of the coated glass for optical fiber according to the present invention. In order to compare these with conventional coated glasses for optical fibers, for example, Japanese Patent Application No. 52-154535 (Japanese Unexamined Patent Publication No. 54-87236)
Examples 1 to 9 of Tables 1 to 3 described in the publication
The components, component values, and characteristics of each glass to be covered are shown in Table 4 as Reference Examples 1 to 9, respectively.
これらの参考例１〜参考例９に示された被覆ガラスの成
分は本発明における表１〜表３の実施例１〜実施例９に
示された被覆ガラスの成分中のＺｎＯｖ ＺｒＯ２ｅ
ＴｉＯ２のうちから選ばれた少なくとも１池の代りにこ
れと同量のＳ ｓ ０２ で置換したものに相当する
ものである。これらの表１〜表４から本発明による光フ
アイバー用被覆ガラスは従来のものと比較して特に耐水
性が優れていることがわかる。The components of the coated glasses shown in these Reference Examples 1 to 9 are ZnOv ZrO2e in the components of the coated glasses shown in Examples 1 to 9 of Tables 1 to 3 in the present invention.
This corresponds to replacing at least one pond selected from TiO2 with the same amount of S s 02 . From these Tables 1 to 4, it can be seen that the coated glass for optical fiber according to the present invention has particularly excellent water resistance compared to the conventional glass.
さらにまた表１〜表３には本発明による光フアイバー用
被覆ガラスにさらにＭｇ０４％以下を含ませることによ
り耐水性に変化をもたらすことなく、さらに耐風化性も
向上することが示されている。Furthermore, Tables 1 to 3 show that by further including 04% or less Mg in the coated glass for optical fiber according to the present invention, the weathering resistance is further improved without causing any change in water resistance.
なお前記表１〜表３に示された各成分はそれぞれ本発明
の一実施例を示すものであり、本発明による光ファイバ
ー用被嗜夏ガラスはこれらのものに限定さイ１．ないこ
と明らかである。さらに本発明による光フアイバー用被
覆ガラスにはその特性の変化をもたらさずに例えば芯ガ
ラスとの所定の屈折率差を保つ範囲でＢ２Ｏ３を添加し
て屈折率を調整しなり、また被覆ガラスの均一性を１貝
なわない範囲でＣａＯを添加して被覆ガラスの特性を調
整したりすることができること勿論である。Each of the components shown in Tables 1 to 3 above represents an example of the present invention, and the summer glass for optical fibers according to the present invention is not limited to these. It is clear that there is no such thing. Furthermore, the refractive index can be adjusted by adding B2O3 to the coated glass for optical fiber according to the present invention within a range that maintains a predetermined refractive index difference with the core glass without causing any change in its properties. Of course, the properties of the coated glass can be adjusted by adding CaO within a range that does not affect the properties.
しかして本′発明の上記実施例に係る光ファイバーは、
伝送損失が８５０ｍμの波長での測定で、２０ ｄｌＢ
／Ｋｍμ下であり、低損失の光ファイバーであった。However, the optical fiber according to the above embodiment of the present invention is
Transmission loss is 20 dlB when measured at a wavelength of 850 mμ
/Kmμ, and was a low-loss optical fiber.
尚、上記組成のガラスは、二重ルツボ法以外での製法、
例えば、ロッド・イン・チューブ法で紡糸しても、高耐
水性および高耐候性の低損失光ファイバーが得られる。In addition, the glass with the above composition can be manufactured by a method other than the double crucible method,
For example, even by spinning using the rod-in-tube method, a low-loss optical fiber with high water resistance and high weather resistance can be obtained.
以上詳述した如く、本発明によれば低損失で耐水性、耐
候性などの耐化学的性質が良好で、とくに被色からのア
ルカリ溶出が少なく耐候性・ン
に優れ、かつ寸法＼定性に優れ、しかも線引き作業時の
失透傾向を防止でき、さらに芯と被覆との屈折率の差が
大きい等性能、耐用寿命、損失を著しく改善した光ファ
イバーが得られる光フアイバー用被覆ガラスを提供でき
るものである。As detailed above, the present invention has low loss, good chemical resistance such as water resistance and weather resistance, particularly less alkali elution from the color coating, excellent weather resistance, and excellent dimensional and qualitative properties. Provides a coated glass for optical fibers which is excellent in performance, can prevent devitrification tendency during drawing work, and has significantly improved performance, service life, and loss, such as a large difference in refractive index between the core and the coating. It is.
択 −１ 表 −２ 表 ３ 表 −４Choice -1 Table-2 Table 3 Table-4
Claims (2)
ＦＸ酸化物９〜１７％、 Ａｇ２Ｏ，０，５〜１０ ％
およびＺｏＯ、ＺｒＯ２、ＴｌＯ２のうちから選ばれた
少なくとも１種７％以下を含むことを特徴とする光フア
イバー用被覆ガラス。(1) Weight and μ ratio: 810260-88%, alkali gold FX oxide 9-17%, Ag2O, 0.5-10%
and 7% or less of at least one selected from ZoO, ZrO2, and TlO2.
酸化物９〜１７％、Ａ＃２０３０．５〜１０９ｇ、”１
ｒ１０ 、 ＺｒＯ２、ＴｌＯ２のうちから選ばれた少
なくとも１ ｆｔ！ ７ ％ 以下およびＭｇ０４％以
下を含むことを特徴とする光フアイバー用被覆ガラス０(2) Weight ratio: 5t0260-80%, alkali gold halide 9-17%, A#2030.5-109g, "1
At least 1 ft selected from r10, ZrO2, TlO2! Coated glass for optical fibers characterized by containing 7% or less and Mg04% or less
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58032411A JPS5978949A (en) | 1983-02-28 | 1983-02-28 | Coating glass for optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58032411A JPS5978949A (en) | 1983-02-28 | 1983-02-28 | Coating glass for optical fiber |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53057118A Division JPS5945617B2 (en) | 1978-05-16 | 1978-05-16 | Weather-resistant multi-component glass fiber for optical communications |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5978949A true JPS5978949A (en) | 1984-05-08 |
| JPS6316349B2 JPS6316349B2 (en) | 1988-04-08 |
Family
ID=12358202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58032411A Granted JPS5978949A (en) | 1983-02-28 | 1983-02-28 | Coating glass for optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5978949A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6716781B2 (en) * | 2001-07-10 | 2004-04-06 | Schott Glas | Lead-free optical glasses |
| CN100384765C (en) * | 2005-12-29 | 2008-04-30 | 华东理工大学 | Cladding glass for acid soluble method flexible optical fiber image transmitting beam |
| CN100418911C (en) * | 2003-11-11 | 2008-09-17 | 日本电气硝子株式会社 | Layer coated glass for encapsulating semiconductor |
| CN110040969A (en) * | 2019-04-10 | 2019-07-23 | 长春理工大学 | A kind of flexible optical fiber image transmitting beam inner cladding glass and preparation method thereof |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH021889A (en) * | 1988-06-10 | 1990-01-08 | Sharp Corp | Display device |
| JPH0424781A (en) * | 1990-05-15 | 1992-01-28 | Canon Inc | Document processor |
| JPH04119476A (en) * | 1990-09-11 | 1992-04-20 | Sankyo Seiki Mfg Co Ltd | Picture data converter |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS533354A (en) * | 1976-06-30 | 1978-01-13 | Toshiba Corp | Blass fibre for optical communication |
| JPS533352A (en) * | 1976-06-30 | 1978-01-13 | Toshiba Corp | Glass fibre for optical communication |
-
1983
- 1983-02-28 JP JP58032411A patent/JPS5978949A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS533354A (en) * | 1976-06-30 | 1978-01-13 | Toshiba Corp | Blass fibre for optical communication |
| JPS533352A (en) * | 1976-06-30 | 1978-01-13 | Toshiba Corp | Glass fibre for optical communication |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6716781B2 (en) * | 2001-07-10 | 2004-04-06 | Schott Glas | Lead-free optical glasses |
| CN100418911C (en) * | 2003-11-11 | 2008-09-17 | 日本电气硝子株式会社 | Layer coated glass for encapsulating semiconductor |
| CN100384765C (en) * | 2005-12-29 | 2008-04-30 | 华东理工大学 | Cladding glass for acid soluble method flexible optical fiber image transmitting beam |
| CN110040969A (en) * | 2019-04-10 | 2019-07-23 | 长春理工大学 | A kind of flexible optical fiber image transmitting beam inner cladding glass and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6316349B2 (en) | 1988-04-08 |
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