JPH038742A - Ge-as-s glass fiber having core-clad structure - Google Patents
Ge-as-s glass fiber having core-clad structureInfo
- Publication number
- JPH038742A JPH038742A JP1139169A JP13916989A JPH038742A JP H038742 A JPH038742 A JP H038742A JP 1139169 A JP1139169 A JP 1139169A JP 13916989 A JP13916989 A JP 13916989A JP H038742 A JPH038742 A JP H038742A
- Authority
- JP
- Japan
- Prior art keywords
- glass
- core
- fiber
- clad
- sulfur
- 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
- 239000003365 glass fiber Substances 0.000 title claims abstract description 12
- 239000011521 glass Substances 0.000 claims abstract description 41
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 23
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052785 arsenic Inorganic materials 0.000 claims abstract description 12
- 239000011593 sulfur Substances 0.000 claims abstract description 12
- 229910052732 germanium Inorganic materials 0.000 claims abstract description 9
- 229910052711 selenium Inorganic materials 0.000 claims abstract description 5
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 claims abstract description 3
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000011669 selenium Substances 0.000 claims abstract 6
- 238000005253 cladding Methods 0.000 claims description 9
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 17
- 230000035699 permeability Effects 0.000 abstract 1
- 125000003748 selenium group Chemical group *[Se]* 0.000 abstract 1
- 239000000835 fiber Substances 0.000 description 39
- 238000009987 spinning Methods 0.000 description 9
- 239000000203 mixture Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical group [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 239000005387 chalcogenide glass Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 239000002019 doping agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 239000000075 oxide glass Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- C03C13/00—Fibre or filament compositions
- C03C13/04—Fibre optics, e.g. core and clad fibre compositions
- C03C13/041—Non-oxide glass compositions
- C03C13/043—Chalcogenide glass compositions
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- 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)
- Glass Compositions (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］
本発明は光の透過性、及びＣＯレーザーのパワー伝送特
性に優れたコアクラッド構造を有するＧｅ−Ａｓ−５ガ
ラスフアイバーに関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a Ge-As-5 glass fiber having a core-clad structure with excellent light transmittance and CO laser power transmission characteristics.
［従来の技術］
カルコゲナイドガラスは赤外透過性、化学的安定性、耐
熱性に優れた赤外線透過材料として知られており、赤外
線透過用の窓、フィルター、などに一部用いられている
が、このガラスをファイバー状に成形すれば、既にシリ
カガラスファイバーで実施されている情報伝達や温度計
測用の導波路に応用できるばかりでなく、ＣＯレーザー
のエネルギー伝送用導波路としても利用することができ
る。カルコゲナイドガラスの中でもイオウ系ガラスは結
晶化に対する安定性や耐候性に優れており、かつ１〜６
μｍの赤外線をよく透過することから、ファイバー用材
料として注目されている。[Prior Art] Chalcogenide glass is known as an infrared transmitting material with excellent infrared transmittance, chemical stability, and heat resistance, and is partially used in infrared transmitting windows, filters, etc. If this glass is formed into a fiber shape, it can not only be applied to waveguides for information transmission and temperature measurement, which are already implemented using silica glass fibers, but also can be used as a waveguide for CO laser energy transmission. . Among chalcogenide glasses, sulfur-based glasses have excellent stability against crystallization and weather resistance, and
It is attracting attention as a material for fibers because it transmits μm infrared rays well.
［発明が解決しようとする課題］
一般に光ファイバーは中心部分のコアとその周囲を該コ
アよりも屈折率の低いクラッドで取り囲んだ２！］Ｉ構
造にすることが好ましいことはよく知られている。我々
は先に、独自に開発したルツボ紡糸法（特願昭６３−３
８４７４、昭６３．０２．２３出願）を用いた、コアク
ラッド構造を有するＡｓ−５ガラスフアイバーを提案し
た（特願平Ｌ−９４３３１、平［。４．１５出願）。し
かし、Ａｓ−５ガラスの耐熱温度はせいぜい２００°Ｃ
であり、それ以上の温度域でファイバーを使用すると、
ファイバーの端面が酸化したり、ファイバーが軟化した
りするため、例えば、このファイバーを用いてＣＯレー
ザーのパワー伝送を行うと、入射パワーが７０Ｗ以上に
なるとファイバーが軟化して、それ以上のパワーを安定
して透過することが困難であった。耐熱性に優れたイオ
ウ系ガラスとして、Ｇｅ−Ａｓ−５ガラスが知られてい
る（Ｉ？、ｌ７．Ｍｙｕｌｌｅｒ、ｅｔ ａｌ、 ５ｏ
Ｌｉｄ ＳｔａｔｅＣｈｅｍｉｓｔｒｙ（１９８５）６
Ｂ）が、このガラスを紡糸した例は報告されていない。[Problems to be Solved by the Invention] Generally, an optical fiber has a central core surrounded by a cladding having a lower refractive index than the core. ] It is well known that the I structure is preferable. We first developed our own crucible spinning method (patent application 1986-3).
8474, filed on February 23, 1983), and proposed an As-5 glass fiber having a core-clad structure (Japanese Patent Application No. 1993-94331, filed on April 15, 1989). However, the heat resistance temperature of As-5 glass is at most 200°C.
, and when the fiber is used in a temperature range higher than that,
Because the end face of the fiber may oxidize or the fiber may become soft, for example, if this fiber is used to transmit the power of a CO laser, if the incident power exceeds 70 W, the fiber will soften, making it impossible to transmit more power than that. It was difficult to stably transmit the water. Ge-As-5 glass is known as a sulfur-based glass with excellent heat resistance (I?, 17. Myuller, et al., 5o
Lid State Chemistry (1985) 6
B) However, there have been no reports of spinning this glass.
［課題を解決するための手段］
本発明に係るコアクラッド構造を有するＧｅ−Ａｓ−５
ガラスフアイバーは、コアガラス及びクラッドガラスが
ゲルマニウム（Ｇｅ）、ひ素（Ａｓ）、イオウ（Ｓ）の
３元素から構成されており、かつコアガラスのイオウの
一部がＳｅで置換されていることを特徴としている。す
なわち、該ガラスファイバーは、コア、クラッド共に、
Ｇｅが０．５〜３５ａＬ％、５〜４４ａｔ％、Ｓが４０
〜８５ａＬ％、ＧｅとＡｓの合計が２０〜θＯａｔ％で
あり、かつ、コアのイオウの０．５〜１５ａｔ％がＳｅ
で置換されているガラスによって、好ましくは、Ｇｅが
１０〜２５、Ａｓが１０〜３０ａｔ％、Ｓが５０〜７５
ａｔ％、ＧｅとＡｓの合計が２５〜４５ａＬ％であり、
かつ、コアのイオウの２．５〜５ａｔ％がＳｅで置換と
れているガラスによって構成されている。[Means for solving the problem] Ge-As-5 having a core clad structure according to the present invention
The glass fiber has a core glass and a cladding glass composed of three elements: germanium (Ge), arsenic (As), and sulfur (S), and a portion of the sulfur in the core glass is replaced with Se. It is a feature. That is, the glass fiber has both a core and a cladding.
Ge is 0.5-35aL%, 5-44at%, S is 40
~85aL%, the total of Ge and As is 20~θOat%, and 0.5~15at% of the sulfur in the core is Se.
Depending on the glass substituted with
at%, the total of Ge and As is 25 to 45aL%,
In addition, it is made of glass in which 2.5 to 5 at% of the sulfur in the core is replaced with Se.
コアガラス、クラッドガラス共にＧｅの含有量が上記限
定範囲の上限を越えると、ガラスが結晶化しやすくなり
紡糸ができなくなるばかりか、理由はよくわからないの
だが、結晶化していないにもかかわらずガラスが脆くな
り、ファイバーに成形できても非常に折れやすい。When the Ge content of both the core glass and the clad glass exceeds the upper limit of the above limited range, the glass tends to crystallize and spinning becomes impossible, and for reasons that are not well understood, the glass It becomes brittle, and even if it can be formed into fibers, it breaks very easily.
また、コアガラス、クラッドガラス共にＧｅの含有量が
上記限定範囲の下限よりも低くなると、ガラスの耐熱性
が悪くにるので、例えばＣＯレーザーのパワー伝送など
に用いるには好ましくない。Further, if the Ge content of both the core glass and the clad glass is lower than the lower limit of the above-mentioned limited range, the heat resistance of the glass deteriorates, which is not preferable for use in, for example, power transmission of a CO laser.
さらに、コアガラス、クラッドガラス共にＡｓの含有量
が上記限定範囲の上限または下限からはずれると、ガラ
スが結晶化しやすくなり、紡糸ができな（なる。Ｓの含
有量が上記限定範囲の下限よりも低くなると、ガラスが
結晶化しやす（なり、紡糸ができなくなる。Ｓの含有量
が上記限定範囲の上限を越えると、ガラスが結晶化しや
すくなり紡糸ができなくなねばかりか、ガラスの耐熱性
が悪くなるので好ましくない。コアガラスのＳｅの含有
量はファイバーの開口数ＮＡを調節するためのドーパン
トであるため、たとえばＮＡ＝０．４のファイバーを得
るためには２，５〜５ａＬ％で十分である。Furthermore, if the As content of both the core glass and the cladding glass deviates from the upper or lower limit of the above limited range, the glass will tend to crystallize, making spinning impossible. If the S content is too low, the glass tends to crystallize (and cannot be spun). If the S content exceeds the upper limit of the above-mentioned limited range, not only will the glass easily crystallize and spinning will not be possible, but the heat resistance of the glass will deteriorate. This is not preferable because it deteriorates the Se content.Since the Se content in the core glass is a dopant for adjusting the numerical aperture NA of the fiber, for example, 2.5 to 5 aL% is sufficient to obtain a fiber with NA=0.4. It is.
［実施例コ
次に本発明の方法を実施例に基づいて、さらに詳細に説
明する。[Example] Next, the method of the present invention will be explained in more detail based on an example.
［実施例−１］
Ｇ Ｅ ： １５ａｔ％、Ａ ｓ ： ２５ａｔ％、Ｓ
： ５７ａＬ％、Ｓｅ：３ａＬ％の組成からなるコア
ロッドを、Ｇｅ：１５ａ（％、Ａ ｓ ： ２５ａｔ％
、ｓ ： ８０ａＬ％の組成からなるクラッドチューブ
の中に挿入し、これを下部にノズルを有するルツボの中
に垂直に設置し、ルツボ内部をアルゴンガスで置換した
。その後、ルツボの下端近傍のみをクラッドチューブ及
びコアロッドの粘度が１０６ポイズになる温度まで加熱
した。クラッドチューブとコアロッドとが融着し、かつ
クラッドチューブがルツボ下端のノズルの周囲に均一に
融着した後、クラッドチューブの周囲を１．５ ｋｇ／
ｃＪの圧力で加圧すると同時にクラッドチューブとコア
ロッドとの間隙を１０’Ｌｏｒｒに減圧した。これらの
作業によってクラッドチューブとコアロッドとは完全に
一体化し、ノズルよりコア径６５０μｍ１クラツド径８
００μｍのファイバーを連続的に紡糸することができた
。ファイバーは直に樹脂でコーティングした後にドラム
に巻く取った。[Example-1] G E: 15 at%, As: 25 at%, S
: 57aL%, Se: 3aL%, Ge: 15a(%, As: 25at%)
, s: 80aL%, this was placed vertically in a crucible having a nozzle at the bottom, and the inside of the crucible was replaced with argon gas. Thereafter, only the vicinity of the lower end of the crucible was heated to a temperature at which the viscosity of the clad tube and core rod became 106 poise. After the clad tube and core rod are fused and the clad tube is evenly fused around the nozzle at the lower end of the crucible, the area around the clad tube is 1.5 kg/
At the same time, the gap between the clad tube and the core rod was reduced to 10'Lorr. Through these operations, the clad tube and core rod are completely integrated, and the core diameter is 650 μm and the clad diameter is 8 from the nozzle.
00 μm fiber could be continuously spun. The fibers were directly coated with resin and then wound onto a drum.
得られたファイバーの透過損失を第１図に示す。The transmission loss of the obtained fiber is shown in FIG.
最低損失は２．６μｍ付近で０．３ｄＢ／ｍであり、又
ＣＯレーザーの発振波長である５、４μｍでの透過損失
は０．４ｄＢ ／ｍであった。ファイバーのＮＡは０．
５であった。このファイバーを用いてＣＯレーザーのパ
ワー伝送を試みたところ、長さ５０ｃｍのファイバーで
１２０Ｗの出射エネルギーを得ることができ、その際フ
ァイバーは全く軟化しなかった。The lowest loss was 0.3 dB/m near 2.6 μm, and the transmission loss at 5 and 4 μm, which is the oscillation wavelength of the CO laser, was 0.4 dB/m. The NA of the fiber is 0.
It was 5. When we attempted to transmit the power of a CO laser using this fiber, we were able to obtain an output energy of 120 W with a 50 cm long fiber, and the fiber did not soften at all.
実施例−２−３
表１に示す組成からなるコアロッド及びクラッドチュー
ブを作製して、実施例−１と同じ手法でコア径６５０μ
ｍ１クラツド径８００μｍのファイバーを連続的に紡糸
した。得られたファイバーの透過損失を測定したところ
、最低損失は実施例−２のファイバーで０．３ｄＩ３
／ｍ（２，６ｔｔ ｍ） 、また実施例−３のファイバ
ーで０．２ｄＢ ／ｍ （２，３μｍ）が達成された。Example-2-3 A core rod and clad tube having the compositions shown in Table 1 were produced, and the core diameter was 650 μm using the same method as in Example-1.
Fibers with a m1 cladding diameter of 800 μm were continuously spun. When the transmission loss of the obtained fiber was measured, the lowest loss was 0.3 dI3 for the fiber of Example-2.
/m (2.6 tt m), and 0.2 dB /m (2.3 μm) was achieved with the fiber of Example-3.
ＣＯレーザーの発振波長である５゜４μｍでの透過損失
はいずれのファイバーでも０゜４ｄＢ／ｍであった。ま
たこれらのファイバー５０ｃｍを用いてＣＯレーザーの
パワー伝送を行ったところ、いずれのファイバーでも１
２０Ｗ以−ヒのパワーを出射できた。The transmission loss at 5°4 μm, which is the oscillation wavelength of the CO laser, was 0°4 dB/m for each fiber. In addition, when power transmission of CO laser was performed using these 50 cm fibers, each fiber had 1
It was able to emit more than 20W of power.
比較例−１
Ａｓ：４０ａｊ％、Ｓ ： ５７ａｔ％、Ｓ ｅ ：
３ａｔ％の組成からなるコアロッドを、ＡＳ：３８ａＬ
％、Ｓ：６２ａｔ％の組成からなるクラッドチューブの
中に挿入し、実施例−１と同じ手法でコア径６５０μｍ
、クラツド径８００μｍのファイバーを連続的に紡糸し
た。得られたファイバーの５．４μｍでの透過損失は０
．４ｄＢ／ｍであった。しかし、このファイバー５０ｃ
ｍを用いてＣＯレーザーのパワー伝送を行ったところ、
出力が１１０Ｗに達した時点でファイバーが軟化しはじ
めたため、長時間のパワー伝送が困難であった。Comparative Example-1 As: 40 aj%, S: 57 at%, S e:
A core rod having a composition of 3 at%, AS:38aL
%, S: inserted into a clad tube consisting of a composition of 62 at%, and a core diameter of 650 μm using the same method as in Example-1.
, fibers with a cladding diameter of 800 μm were continuously spun. The transmission loss of the obtained fiber at 5.4 μm is 0.
．． It was 4 dB/m. However, this fiber 50c
When power transmission of CO laser was performed using m,
The fiber began to soften when the output reached 110 W, making it difficult to transmit power for a long time.
比較例−２
Ｇｅ：３６ａｔ％、Ａｓ：５ａＬ％、Ｓ ： ５７ａＬ
％、Ｓｅ ： ２ａｔ％の組成からなるコアロッドを、
Ｇｅ：５ｅａｔ％、Ａｓ：５ａｔ％、Ｓ ： ５９ａｔ
％の組成からなるクラッドチューブの中に挿入し、実施
例−１と同じ手法で紡糸を試みた。しかし、紡糸温度域
でクラッドガラスが失透したため、連続的な紡糸が困難
であった。Comparative Example-2 Ge: 36at%, As: 5aL%, S: 57aL
%, Se: A core rod consisting of a composition of 2 at%,
Ge: 5at%, As: 5at%, S: 59at
%, and spinning was attempted using the same method as in Example-1. However, continuous spinning was difficult because the clad glass devitrified in the spinning temperature range.
比較例−３
Ｇ ｅ ： １Ｏａｔ％、Ａ ｓ ： ｔｏａｔ％、Ｓ
： ７８ａｔ％、Ｓｅ：２ａＬ％の組成からなるガラ
スロッドを、Ｇｅ：１０ａＬ％、Ａｓ：１０ａｊ％、Ｓ
： ８０ａＬ％の組成からなるクラッドチューブの中
に挿入し、実施例−１と同じ手法で紡糸することによっ
て、コア径６５０μｍ１クラツド径７００μｍのファイ
バーを得た。このファイバーの透過損失を測定したとこ
ろ、最低損失はＯ，ｌｄＢ ／ｍ （２，３μｍ）であ
ったが、ＣＯレーザーの発振波長である５、４μｍでの
透過損失は３．６ｄＢ ／ｍと高く、また、ファイバー
の耐熱温度は１６０℃と低かった。このため、長さ５０
ｃｍのこのファイバーを用いてＣＯシレーザーのパワー
伝送を行ったところ、入射パワー４０Ｗでファイバーが
軟化した。Comparative example-3 Ge: 1Oat%, As: toat%, S
: A glass rod having a composition of 78 at%, Se: 2aL%, Ge: 10aL%, As: 10aj%, S
: A fiber having a core diameter of 650 μm and a cladding diameter of 700 μm was obtained by inserting the fiber into a clad tube having a composition of 80 aL% and spinning in the same manner as in Example-1. When we measured the transmission loss of this fiber, the lowest loss was O.ldB/m (2.3 μm), but the transmission loss at 5.4 μm, which is the oscillation wavelength of the CO laser, was as high as 3.6 dB/m. Moreover, the heat resistance temperature of the fiber was as low as 160°C. Therefore, the length is 50
When power transmission of a CO laser was performed using this fiber of cm, the fiber softened at an incident power of 40 W.
［発明の効果］
本発明によれば、従来は製造が困難であったコア・クラ
ッド構造を有し、赤外透過性に優れ、かつ耐熱温度が高
いコアクラッド構造を有するＧｅ−Ａｓ−５ガラスフア
イバーを製造することができる。また、このファイバー
を用いて、ＣＯレーザーのパワー伝送を行ったところ、
長さ５０ｃｍのファイバーの場合、１２０Ｗ以上のパワ
ー伝送が可能で、ファイバーの軟化は起こらなかった。[Effects of the Invention] According to the present invention, Ge-As-5 glass has a core-clad structure that has been difficult to manufacture in the past, has excellent infrared transmittance, and has a core-clad structure that has a high heat resistance temperature. Fibers can be manufactured. In addition, when we used this fiber to transmit the power of a CO laser,
In the case of a fiber with a length of 50 cm, power transmission of more than 120 W was possible, and fiber softening did not occur.
第１図は実施例１のコア・クラッド型ファイバーの透過
損失スペクトルである。
非酸化物ガラス研究開発株式会社FIG. 1 is a transmission loss spectrum of the core-clad fiber of Example 1. Non-Oxide Glass Research and Development Co., Ltd.
Claims (1)
Ｇｅ）、ひ素（Ａｓ）、イオウ（Ｓ）の３元素から構成
されており、かつコアガラスのイオウの一部がセレン（
Ｓｅ）で置換されていることを特徴とするコアクラッド
構造を有するＧｅ−Ａｓ−Ｓガラスファイバー。 ２ コア、クラッド共にＧｅが０．５〜３５ａｔ％、Ａ
ｓが５〜４４ａｔ％、Ｓが４０〜８５ａｔ％、ＧｅとＡ
ｓの合計が２０〜６０ａｔ％であり、かつ、コアガラス
のイオウの０．５〜１５ａｔ％がＳｅで置換されている
ことを特徴とする請求項１記載のコアクラッド構造を有
するＧｅ−Ａｓ−Ｓガラスファイバー。[Claims] 1. The core glass and cladding glass are made of germanium (
It is composed of three elements: Ge), arsenic (As), and sulfur (S), and some of the sulfur in the core glass is selenium (
A Ge-As-S glass fiber having a core-clad structure characterized by being substituted with Se). 2 Ge is 0.5 to 35 at% in both core and cladding, A
S is 5 to 44 at%, S is 40 to 85 at%, Ge and A
Ge-As- having a core-clad structure according to claim 1, wherein the total of s is 20 to 60 at%, and 0.5 to 15 at% of the sulfur in the core glass is replaced with Se. S glass fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1139169A JPH0791087B2 (en) | 1989-06-02 | 1989-06-02 | Ge-As-S glass fiber having core-clad structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1139169A JPH0791087B2 (en) | 1989-06-02 | 1989-06-02 | Ge-As-S glass fiber having core-clad structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH038742A true JPH038742A (en) | 1991-01-16 |
| JPH0791087B2 JPH0791087B2 (en) | 1995-10-04 |
Family
ID=15239185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1139169A Expired - Lifetime JPH0791087B2 (en) | 1989-06-02 | 1989-06-02 | Ge-As-S glass fiber having core-clad structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0791087B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0676378A1 (en) * | 1994-04-11 | 1995-10-11 | Corning Incorporated | Ga- and/or In-containing AsGe sulfide glasses |
| EP0849234A3 (en) * | 1995-03-06 | 1998-09-30 | Hoya Corporation | Chalcogenide glass optical fibre |
| EP1567893A2 (en) * | 2002-11-22 | 2005-08-31 | OmniGuide, Inc. | Dielectric waveguide and method of making the same |
-
1989
- 1989-06-02 JP JP1139169A patent/JPH0791087B2/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0676378A1 (en) * | 1994-04-11 | 1995-10-11 | Corning Incorporated | Ga- and/or In-containing AsGe sulfide glasses |
| JPH07291655A (en) * | 1994-04-11 | 1995-11-07 | Corning Inc | Transparent glass |
| AU689853B2 (en) * | 1994-04-11 | 1998-04-09 | Corning Incorporated | Ga- and/or In-containing AsGe sulfide glasses |
| CN1042725C (en) * | 1994-04-11 | 1999-03-31 | 康宁股份有限公司 | Ga-and/or in-containing AsGe sulfide glasses |
| EP0849234A3 (en) * | 1995-03-06 | 1998-09-30 | Hoya Corporation | Chalcogenide glass optical fibre |
| US5958103A (en) * | 1995-03-06 | 1999-09-28 | Hoya Corporation | Process for producing preform for glass fiber and process for producing glass fiber |
| US6074968A (en) * | 1995-03-06 | 2000-06-13 | Hoya Corporation | Chalcogenide glass fiber |
| EP1567893A2 (en) * | 2002-11-22 | 2005-08-31 | OmniGuide, Inc. | Dielectric waveguide and method of making the same |
| EP1567893A4 (en) * | 2002-11-22 | 2007-09-19 | Omniguide Inc | Dielectric waveguide and method of making the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0791087B2 (en) | 1995-10-04 |
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