WO2006025522A1 - ハロゲン化物ガラス組成物及びそれを利用した光ファイバー - Google Patents
ハロゲン化物ガラス組成物及びそれを利用した光ファイバー Download PDFInfo
- Publication number
- WO2006025522A1 WO2006025522A1 PCT/JP2005/016104 JP2005016104W WO2006025522A1 WO 2006025522 A1 WO2006025522 A1 WO 2006025522A1 JP 2005016104 W JP2005016104 W JP 2005016104W WO 2006025522 A1 WO2006025522 A1 WO 2006025522A1
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- WO
- WIPO (PCT)
- Prior art keywords
- glass
- element selected
- force
- optical fiber
- mol
- 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.)
- Ceased
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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
- C03C3/32—Non-oxide glass compositions, e.g. binary or ternary halides, sulfides or nitrides of germanium, selenium or tellurium
- C03C3/325—Fluoride glasses
-
- 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
- C03C13/042—Fluoride glass compositions
-
- 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
- G02B6/02—Optical fibres with cladding with or without a coating
Definitions
- the present invention relates to a fluoride glass yarn composition used for an optical amplifier or a laser, and an optical fiber using the fluoride glass composition.
- a silica glass fiber doped with Er as an active ion has been used in optical amplifiers that amplify optical signals in the 1.5 m band, and has played a major role in high-speed optical communications.
- quartz glass fibers can obtain flat gain characteristics only in a narrow wavelength range, so there is a limit to wavelength multiplexing for communications, and a wider-band amplification medium is required.
- research on the broad range of Er-doped quartz glass fibers and the wider range of V-Er-doped fluoride glass than quartz is actively underway!
- fluoride glass has been developed mainly for Er-doped Zr fluoride glass.
- Er-doped fluoride glass has a problem in that when excited in the 0.98 m band, excited state absorption (ESA) occurs and efficiency decreases.
- ESA excited state absorption
- Patent Document 1 a method of co-adding Ce 3+ ions to suppress ESA is known (see Patent Document 1).
- Patent Document 1 To suppress ESA until a practical gain is obtained, a large amount of Ce is required. It is necessary to add.
- a large amount of Ce is added to the Zr-based fluoride glass, the stability of the glass is impaired, and a minute crystal that becomes a member of the transmission loss is generated inside the glass, so that the transmission loss becomes 1000 dBZkm or more.
- the fluoride glass fiber can increase the amount of Er added compared to the quartz fiber, the length of the fiber in the case of configuring an optical amplifier can be shorter than that of the quartz fiber. Therefore, it is not necessary to make the loss as low as that of quartz fiber, but it is difficult to obtain a practical level of signal gain unless it is at least 200 dBZ km or less, preferably 10 dBZkm or less.
- Patent Document 1 Japanese Patent Laid-Open No. 11 035339 Disclosure of the invention
- the present invention provides a glass composition in which Er and Ce are co-added to a Zr-based fluoride glass, and can be used to stably manufacture a high-quality optical fiber.
- the purpose is to do.
- Another object of the present invention is to provide an optical fiber using the glass composition.
- the cation force constituting the glass is expressed in mol%, and at least one element selected from Zr and H: 45 to 70%, Al, Ga, and In force is selected. More than one element: 0 to 15%, at least one element selected from Ba, Sr, Ca and Mg: 10 to 40%, La: 0 to 15%, R: 0.01 to 15% (R is Represents at least one element selected from Sc, Y, Gd and Lu), Er: 0.001-15%, Ce: 0.01-15%, and (La + R + Er + Ce) ⁇ 15%, Li, At least one element selected from Na, K, Cs, Rb, Pb, Gd, and Zn: a range of 0-30%, and the total number of cations is 100%.
- At least one element selected from F 100-x%, Cl, Br and I in terms of mol%: 0 to 10% (where X is at least one element selected from Cl, Br and I) % Of range) Providing also Harogeni ⁇ glass composition.
- halide glass composition having a molar specific power of cation (Er + R) / (La + Ce) ⁇ 0.05.
- cation force mole 0/0 Display, R: 0.1 ⁇ 5% (R is, Sc, Y, indicates at least one kind of element selected from Gd, and Lu) above halide glass composition is I will provide a.
- the present invention provides an optical fiber in which the core portion has the above-described halide glass force and the cladding portion has a halide glass force having a smaller refractive index than the core portion.
- the scope of the present invention is that at least one element selected from the group consisting of Zr and H 2 in which the cation constituting the glass is expressed in mol%: 45 to 70%, Al, Ga and In force is selected.
- One or more elements 0 to 15%, at least one element selected from Ba, Sr, Ca and Mg: 10 to 40%, La: 0 to 15%, R: 0.01 to 15% (R is At least one element selected from Sc, Y, Gd and Lu), Er: 0.001-15%, Ce: 0.01-15%, and (La + R + Er + Ce) ⁇ 15%, at least one element selected from Li, Na, K, Cs, Rb, Pb, Gd, and Zn: It is in the range of 0-30% and the total number of cations is 100 % and is, F glass anion force mole 0/0 display to configure: 100-x%, Cl, at least one compound or element selected from Br and I: 0% (where X is Cl , Br and I at least one element selected from Cl
- Cation force constituting glass When at least one element selected from Zr and H 2 is less than 45% or more than 70% in terms of mol%, the glass becomes unstable and crystallizes. 45% to 70% is desirable because of fear. Further, it is preferably 50 to 65% for stably producing a high-quality fiber with further reduced loss.
- the glass when at least one element selected from Al, Ga, and In, in terms of cation force mol% constituting glass, exceeds 15%, the glass may become unstable and crystallize. Therefore, 0 to 15% is desirable. Furthermore, it is preferably 0 to 7%, more preferably 0.5 to 7%, in order to stably produce a high-quality fiber with further reduced loss.
- the glass becomes unstable when at least one element selected from Ba, Sr, Ca and Mg is less than 10% or more than 40%. Therefore, 10-40% is preferable. Furthermore, it is preferably 10 to 30% for stably producing a high-quality fiber with further reduced loss.
- the cation force constituting the glass is expressed in mol%, if La exceeds 15%, the glass may become unstable and crystallize, so 0 to 15% is desirable. Furthermore, it is preferably 0 to 5% for stably producing a high-quality fiber with further reduced loss.
- R is 0.01 to 15% (R is, Sc, indicating Y, Gd, at least one kind of element selected from Lu) is It is desirable. If it is less than 0.01%, the effect of suppressing microcrystal precipitation cannot be obtained, and if it exceeds 15%, the glass may become unstable and crystallize. Further, in order to stably produce a high-quality fiber with further reduced loss, it is more preferable that R is 0.1 to 5%, and more preferably 0.3 to 3%.
- the cation force constituting the glass is expressed in terms of mol%, Er: 0.001-15%, Ce: 0.01-15%, and (La + R + Er + Ce) ⁇ 15%. If Er is less than 0.001%, crystallites are likely to be generated and the light amplification effect cannot be obtained. If Er exceeds 15%, glass is uneasy There is a risk of crystallization. If Ce is less than 0.01%, the ESA suppression effect cannot be obtained, and if it exceeds 15%, the glass may become unstable and crystallize. If (La + R + Er + Ce) exceeds 15%, the glass may become unstable and crystallize, so this range is preferably 15% or less.
- Er 0.001 to 5% (preferably 0.01 to 3%), Ce: 0.01 to 10% (preferably 0.5 to 10%), and ( More preferably, La + R + Er + Ce) ⁇ 10%.
- the amount is preferably 5 to 30%, more preferably 10 to 30% for stably producing a high-quality fiber with further reduced loss.
- At least one element selected from F: 100-x%, Cl, Br, and I in terms of mol% is 0 to 10% (where X is Cl, Br, I It is also desirable to have a range force of 0 ( 0 mole). If it exceeds 10%, the glass may become unstable and crystallize. In particular, 0 to 5% is preferable.
- the ratio of the rare earth element to be added is the ratio of (Er + R) / (La + Ce) to suppress the generation of microcrystals (R is at least one selected from Sc, Y, Gd and Lu forces)
- R is at least one selected from Sc, Y, Gd and Lu forces
- a low-loss fiber that is preferably 0.05 or more, it is more preferably 0.075 or more.
- the halide glass raw material in the present invention is not particularly limited! However, if a large amount of impurities are present in the raw material, the impurities may become crystal nuclei, so that the raw material is as pure as possible. I prefer that.
- the manufacturing method of the optical fiber in the present invention is not particularly limited, but a preform manufactured by a general method for manufacturing a fluoride glass preform, such as a built-in casting method or an extrusion molding method, is drawn by heating. By doing so, it is possible to produce an optical fiber.
- an optical fiber by forming a core portion with the halogenated glass of the present invention, forming a cladding portion with a refractive index smaller than that of the core portion, and using a halogenated glass. That's right.
- the halide glass used to form the cladding portion at least one kind selected from Zr and H in terms of cation force mol% constituting the glass (preferably used in combination with Zr and Hf ⁇ ).
- Element 45 to 70%, at least one element selected from Al, Ga and In forces: 0 to 15%, at least one element selected from Ba, Sr, Ca and Mg: 10 to 40%, La: 0 to 15%, R: 0.01 to 15% (R represents at least one element selected from Sc, Y, Gd and Lu), Er: 0.001 to 15%, Ce : 0-15% (preferably 0%) and (La + R + Er + Ce) ⁇ 15%, at least one selected from Li, Na, K, Cs, Rb, Pb, Gd and Zn Elements: in the range of 0-30%, the total amount of cations is 100%, and the anions constituting the glass are selected from F: 100-x%, Cl, Br, and I in terms of mol% At least one Kind of element: 0 to 10% (where X is Cl, at least one element mol 0/0 selected from Br and I, preferably 0%) halide glass, characterized in that also range force I prefer to use the composition.
- the refractive index of the cladding part smaller by 0.002 to 0.05 than the refractive index of the core part.
- Zr-based fluoride glass co-doped with Er and Ce can suppress ESA during 0.98 m-band excitation, which is a problem with general Zr-based fluoride glass, but has practical signal gain in the 1.55 m-band.
- Zr-based fluoride glass containing a large amount of Ce deteriorates the stability of the glass compared to general Zr-based fluoride glass, so that microcrystals are likely to precipitate inside the glass during glass production.
- the composition of the present invention it is possible to suppress the precipitation of microcrystals and stably manufacture a high-quality optical fiber.
- the glass composition of the present invention it is possible to suppress the precipitation of microcrystals inside the glass when producing a Zr-based fluoride glass in which Er and Ce are added together.
- the constituents of the glass are expressed in mol%, ZrF: 53%, BaF: 19%, A1F: 3%, CeF: 5
- a solution containing 0.5 g of acidic ammonium fluoride as a fluorinated agent added to 50 g is put in an amorphous carbon crucible (size: 35 mm ⁇ X 55 mmL), and the volume ratio of nitrogen and chlorine is In an atmosphere mixed at a ratio of 100: 1, after melting at 900 ° C for 2 hours and at 650 ° C for 1 hour, it is taken out on a carbon block at room temperature and cooled to room temperature to obtain a glass block. It was.
- the glass composition as a core glass, as a cladding for fluoride glass raw materials, components constituting the glass is in a molar 0/0, ZrF: 10% , H1F: 40%, BaF: 19%, LaF: 3%, YF: 2
- Fluoride glass preforms with an outer diameter of 6 mm ⁇ were produced by the method of producing preforms by extrusion molding using the ones heated and melted by the method as clad glass (JP 05-301732 A). Next, this preform was heated at 295 ° C. and drawn to obtain a fluoride glass optical fiber having an outer diameter of 125 ⁇ m and a core diameter of 4 ⁇ m.
- the transmission loss of this fiber was measured by the cut-back method using a light source with a wavelength power of m, and the transmission loss was 50 dBZkm.
- the refractive index at 1.3 m was measured by the V-block method using a precision refractometer KPR-200 manufactured by Shimadzu Corporation.
- Table 1 summarizes the composition and characteristics of the core portion and cladding portion of Example 1.
- a fluoride glass optical fiber was manufactured in the same manner as in Example 1 except that the raw materials used were changed to those shown in Table 1. These characteristics were also measured in the same manner as in Example 1.
- Table 1 summarizes the compositions and characteristics of the core portion and the clad portion of Examples 2 to 6.
- the transmission loss of this fiber was measured by the cut-back method using a light source with a wavelength power of m, and the transmission loss was 3000 dBZkm.
- Table 1 summarizes the yarn formation and characteristics of the core and cladding of Comparative Example 1.
- Example ⁇ (1. 3pm light source used) Core 0. 25 5 19 1. 501
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- Chemical & Material Sciences (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)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Glass Compositions (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004255125A JP2006069842A (ja) | 2004-09-02 | 2004-09-02 | ハロゲン化物ガラス組成物及びそれを利用した光ファイバー |
| JP2004-255125 | 2004-09-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006025522A1 true WO2006025522A1 (ja) | 2006-03-09 |
Family
ID=36000167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/016104 Ceased WO2006025522A1 (ja) | 2004-09-02 | 2005-09-02 | ハロゲン化物ガラス組成物及びそれを利用した光ファイバー |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2006069842A (ja) |
| WO (1) | WO2006025522A1 (ja) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105271727B (zh) * | 2015-11-05 | 2018-04-10 | 中国计量学院 | 铒掺杂中红外发光氟锆锌基玻璃及其制备方法 |
| CN121020977B (zh) * | 2025-10-31 | 2026-01-23 | 秦皇岛微晶科技有限公司 | 一种耐辐射低膨胀氟化物玻璃及其制备方法 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09169540A (ja) * | 1995-12-20 | 1997-06-30 | Sumitomo Electric Ind Ltd | フッ化物ガラス及びフッ化物光ファイバ |
| JPH1135339A (ja) * | 1997-07-14 | 1999-02-09 | Central Glass Co Ltd | フッ化物ガラス組成物 |
-
2004
- 2004-09-02 JP JP2004255125A patent/JP2006069842A/ja active Pending
-
2005
- 2005-09-02 WO PCT/JP2005/016104 patent/WO2006025522A1/ja not_active Ceased
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09169540A (ja) * | 1995-12-20 | 1997-06-30 | Sumitomo Electric Ind Ltd | フッ化物ガラス及びフッ化物光ファイバ |
| JPH1135339A (ja) * | 1997-07-14 | 1999-02-09 | Central Glass Co Ltd | フッ化物ガラス組成物 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2006069842A (ja) | 2006-03-16 |
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