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CN102073093B - High-attenuation optical fiber and manufacturing method of same - Google Patents

High-attenuation optical fiber and manufacturing method of same Download PDF

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Publication number
CN102073093B
CN102073093B CN 201010556038 CN201010556038A CN102073093B CN 102073093 B CN102073093 B CN 102073093B CN 201010556038 CN201010556038 CN 201010556038 CN 201010556038 A CN201010556038 A CN 201010556038A CN 102073093 B CN102073093 B CN 102073093B
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metallic
covering
attenuating fiber
high attenuating
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CN102073093A (en
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陈伟
李诗愈
张涛
胡鹏
杜诚
王冬香
罗文勇
黄文俊
胡福明
莫琦
柯一礼
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Fiberhome Telecommunication Technologies Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01Manufacture of glass fibres or filaments
    • C03B37/012Manufacture of preforms for drawing fibres or filaments
    • C03B37/014Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
    • C03B37/018Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD] by glass deposition on a glass substrate, e.g. by inside-, modified-, plasma-, or plasma modified- chemical vapour deposition [ICVD, MCVD, PCVD, PMCVD], i.e. by thin layer coating on the inside or outside of a glass tube or on a glass rod
    • C03B37/01807Reactant delivery systems, e.g. reactant deposition burners
    • C03B37/01838Reactant delivery systems, e.g. reactant deposition burners for delivering and depositing additional reactants as liquids or solutions, e.g. for solution doping of the deposited glass
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2201/00Type of glass produced
    • C03B2201/06Doped silica-based glasses
    • C03B2201/30Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi
    • C03B2201/40Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi doped with transition metals other than rare earth metals, e.g. Zr, Nb, Ta or Zn
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2203/00Fibre product details, e.g. structure, shape
    • C03B2203/10Internal structure or shape details
    • C03B2203/22Radial profile of refractive index, composition or softening point

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Glass Compositions (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)

Abstract

The present invention relates to the technical field of optical fiber manufacturing, in particular to a high-attenuation optical fiber and a manufacturing method of the same. The high-attenuation optical fiber comprises a core layer and a cladding layer around the core layer, the outer surface of the cladding layer is coated with an organic coating material, the core layer is made of metal ions with high capacity in absorption of light with wavelengths of 1250-1625nm, and the metal ions have a characteristic of smooth absorption within the wave band and comprise cobalt ions and iron ions or comprise the cobalt ions and chromium ions. By adopting the high-attenuation optical fiber and the manufacturing method, the demands of applications in high-capacity dense wavelength division communication systems, high-power CATV (cable television) systems and other telecommunication systems, and the performance of the systems in transmission and reception can be improved.

Description

A kind of high attenuating fiber and manufacturing approach thereof
Technical field
The present invention relates to the optic fibre manufacturing technology field, is a kind of high attenuating fiber and manufacturing approach thereof specifically.Especially refer to that fibre optic attenuator uses to having the high high attenuating fiber that absorbs in 1250nm~1625nm wavelength coverage, this optical fiber has the function that the optical signal power of communication system is decayed.
Background technology
Along with the application of network technology is increasingly extensive, people increase rapidly the demand of wideband transmit, and therefore, optical communication system needs constantly to increase transmission range, transmission capacity and raising transfer rate.The transfer rate of optical fiber communication is from initial mbit/(Mbps), and 2.5G bps (Gbps) arrives 10G bps, and 40G bps, now up to 100G bps, even 160G bps.Wavelength-division multiplex system (WDM) and time division multiplex system (TDM) have improved the transmission capacity and the transfer efficiency of communication system greatly.
Along with the transmission range of optical communication system constantly increases; Relaying is striden segment distance and is also constantly prolonged; Communication system has proposed new requirement to the luminous power of communication link; Both requirement was can power enough big, can satisfy long-distance transmission demand, can satisfy the responding range of the photodetector in the communication system again.For this reason, add fiber amplifier through regular meeting in the optical communication system, fiber optic power amplifier has increased the power of optical communication system, to increase the transmission range of optical signal power.But bigger luminous power possibly exceed the investigative range of photodetector,, need signal light power be reduced in the suitable scope, to satisfy the responding range demand of the various optoelectronic devices of communication system to luminous power for this reason.
Fibre optic attenuator is exactly to face this actual demand and the passive light electron device that is born, and in the fibre optic attenuator the most the material of core be high attenuating fiber.High attenuating fiber is a kind of optical waveguide fiber that the specific band luminous power is had big receptivity.
U.S. Pat 04881793 has proposed a kind of fibre optic attenuator, and the used high attenuating fiber of this attenuator is at the 25dB/m that decays to of 1300nm wavelength, the 1550nm wavelength decay to 20dB/m.This patent is not only set forth the preparation method of this high attenuating fiber, and this high attenuating fiber absorption characteristic is uneven, and it is at the big 5dB/m of absorption of the absorptance 1550nm of 1300nm wavelength wavelength.
U.S. Pat 05633974 has been introduced a kind of full fibre optic attenuator; This patent has only been introduced high attenuating fiber and single-mode fiber has been carried out segmentation welding and assembling; Form the full fibre optic attenuator of differential declines value; And the pad value of its 1300nm and 1550nm differs 1dB, and the characteristic and the preparation method of high attenuating fiber do not had clear and definite elaboration.
United States Patent (USP) 05841926 has been introduced a kind of high attenuating fiber, and this patent has been set forth the waveguiding structure of high attenuating fiber, but the preparation method and the characteristic of high attenuating fiber is not set forth.
U.S. Pat 6498888 has been introduced a kind of high attenuating fiber; Set forth the waveguiding structure of filtering cladding mode; This patent has been enumerated the absorptive character of two kinds of high attenuating fibers, but these two kinds of high attenuating fibers in the absorption coefficient difference of 1310nm and 1550nm wavelength all more than 10dB/m.
International monopoly WO02/061476A1 proposes a kind of high attenuating fiber; This patent has been pointed out the technology path of multicomponent material system; But this patent does not spell out the concentration of dopant material and detailed preparation method, and it is imperfect that patent is set forth, and the absorption coefficient deviation of high attenuating fiber in 1200nm~1600nm wavelength coverage of this patent preparation be ± 0.40dB~± 1.0dB; The absorption flatness is bad, can not satisfy application demand.
Above-mentioned patent is not all set forth the preparation method of high attenuating fiber preferably, and the different wave length that does not all solve high attenuating fiber preferably absorbs flatness problem.
Summary of the invention
To the defective that exists in the prior art; The object of the present invention is to provide a kind of high attenuating fiber and manufacturing approach thereof; Solve the gordian technique that high attenuating fiber absorbs flatness, promote the optical property of high attenuating fiber, satisfy the demand of Communication ray electron device high attenuating fiber material.
For reaching above purpose, the technical scheme that the present invention takes is:
A kind of high attenuating fiber is characterized in that: comprises sandwich layer and, is coated with organic-containing materials at the covering outside surface around the covering of sandwich layer,
Said sandwich layer is by being made up of big receptivity and the metallic ion that in this wave band, has a smooth absorption characteristic the light of 1250nm~1625nm wavelength,
Said metallic ion comprises metallic cobalt ion and metallic iron ion, or metallic cobalt ion and metal chromium ions.
On the basis of technique scheme, said high attenuating fiber has smooth absorption characteristic in 1250nm~1625nm wavelength coverage, and its flatness is optimized the absorption flatness in ± 2% in ± 4%.
On the basis of technique scheme, said high attenuating fiber at the absorption coefficient of 1250nm~1625nm wavelength coverage at 1dB/cm~30dB/cm.
A kind of manufacturing approach of above-mentioned high attenuating fiber is characterized in that, its step is following:
Step 1 adopts improved chemical vapor deposition method at quartzy parent tube inside deposition covering, and said covering is by silicon tetrachloride, germanium tetrachloride, O 2And C 2F 6Reacting gas issues biochemical reaction in the heating of oxyhydrogen flame, generates transparent quartz glass covering;
Step 2, at the loose cavernous quartz glass powder of covering inside deposition, said quartz glass powder is the opaque silicon dioxide of white;
Step 3 will contain certain density metal ion solution and pack in the loose deposition quartz ampoule, soak after 0.5 hour~24 hours, and solution is taken out, and it melted to shorten solid quartz glass plug into then; Said metallic ion comprises metallic cobalt ion and metallic iron ion, or metallic cobalt ion and metal chromium ions;
Step 4 is packed the quartz glass plug in the supporting quartz socket tube into, so that reach the ratio of fibre core and covering, forms high attenuating fiber prefabricated rods;
Step 5 is placed in high attenuating fiber prefabricated rods on the wire-drawer-tower, and to become cladding diameter be 125 micron fiber to melt drawing under the high temperature about 2200 ℃.
On the basis of technique scheme; The concentration range of metallic cobalt ion is between 0.01mol/l~0.20mol/l; The concentration range of metallic iron ion is between 0.01mol/l~0.15mol/l, and the concentration of metal chromium ions is between 0.01mol/l~0.19mol/l.
On the basis of technique scheme, the volumetric molar concentration ratio of metallic iron ion and metallic cobalt ion is in 1: 2.5 to 1: 3.5 scope.
On the basis of technique scheme, the volumetric molar concentration ratio of metal chromium ions and metallic cobalt ion is in 1: 0.85 to 1: 1.25 scope.
High attenuating fiber of the present invention and manufacturing approach thereof; Can satisfy high capacity dense wavelength division communication system, high-power CATV (cable television network) system; And the application demand of other telecommunication system, the transmission and the receptivity of improvement system, its beneficial effect is:
(1) high attenuating fiber manufacturing approach provided by the invention possesses simple possible, and the technology cost is low, energy savings.
(2) high attenuating fiber provided by the invention has bigger absorption to the luminous power in 1250nm~1625nm wavelength coverage, and in this wave band, has smooth absorption characteristic.
(3) high attenuating fiber provided by the invention can satisfy high capacity dense wavelength division communication system, high-power CATV system, and the application demand of other telecommunication system, improves the transmission and the receptivity of system.
(4) fiber products that the present invention relates to has the practical application meaning, has favorable economic benefit and application prospect.
Description of drawings
The present invention has following accompanying drawing:
Fig. 1 is refractive index profile (RIP) figure of high attenuating fiber plug of the present invention;
Fig. 2 is the absorption curve of the high attenuating fiber of first embodiment of the invention;
Fig. 3 is the absorption curve of the high attenuating fiber of second embodiment of the invention;
Fig. 4 is the absorption curve of the high attenuating fiber of third embodiment of the invention;
Fig. 5 is the absorption curve of the high attenuating fiber of four embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is done further explain.
The implication of the part technical term that uses among the present invention is following:
Deposition: the optical fiber starting material issue the technological process that biochemical reaction generates the quartz glass that mixes at certain environment;
Molten contracting: the technological process of post-depositional hollow glass tube being burnt till gradually the solid glass rod under certain thermal source;
Sleeve pipe: the purity quartz glass pipe for high that satisfies certain sectional area and dimensional homogeneity;
Parent tube: the purity quartz glass pipe for high that is used to deposit;
Refractive index profile (RIP): the refractive index of optical fiber or preform (comprising fibre-optical mandrel) and the relation curve between its radius;
Absolute refraction rate variance (δ n): the refractive index of various piece and pure quartz glass refractive index is poor in the preform;
MCVD: improved chemical vapor deposition;
NA: numerical aperture.
High attenuating fiber according to the invention comprises sandwich layer and around the covering of sandwich layer, is coated with organic-containing materials at the covering outside surface,
Said sandwich layer is by being made up of big receptivity and the metallic ion that in this wave band, has a smooth absorption characteristic the light of 1250nm~1625nm wavelength,
Said metallic ion comprises metallic cobalt ion (Co 3+) and metallic iron ion (Fe 3+), or metallic cobalt ion (Co 3+) and metal chromium ions (Cr 3+).
On the basis of technique scheme, said high attenuating fiber has smooth absorption characteristic in 1250nm~1625nm wavelength coverage, and its flatness is optimized the absorption flatness in ± 2% in ± 4%.
On the basis of technique scheme, said high attenuating fiber at the absorption coefficient of 1250nm~1625nm wavelength coverage at 1dB/cm~30dB/cm.
The present invention gives the manufacturing approach of above-mentioned high attenuating fiber, and its step is following:
Step 1 adopts improved chemical vapor deposition method (MCVD) at quartzy parent tube inside deposition covering, and said covering is by silicon tetrachloride, germanium tetrachloride, O 2(oxygen) and C 2F 6(perfluoroethane) reacting gas issues biochemical reaction in the heating of oxyhydrogen flame, generates transparent quartz glass covering; Said improved chemical vapor deposition method is existing processes well known technology, and this step can be implemented by existing known technology, and the present invention no longer details;
Step 2, at the loose cavernous quartz glass powder of covering inside deposition, said quartz glass powder is the opaque silicon dioxide of white; This step can be implemented by existing known technology, and the present invention no longer details;
Step 3 will contain certain density metal ion solution and pack in the loose deposition quartz ampoule, soak after 0.5 hour~24 hours, and solution is taken out, and it melted to shorten solid quartz glass plug into then; Said metallic ion comprises metallic cobalt ion (Co 3+) and metallic iron ion (Fe 3+), or metallic cobalt ion (Co 3+) and metal chromium ions (Cr 3+);
Step 4 is packed the quartz glass plug in the supporting quartz socket tube into, so that reach the ratio of fibre core and covering, forms high attenuating fiber prefabricated rods;
Step 5 is placed in high attenuating fiber prefabricated rods on the wire-drawer-tower, and to become cladding diameter be 125 micron fiber to melt drawing under the high temperature about 2200 ℃.
On the basis of technique scheme; The concentration range of metallic cobalt ion is between 0.01mol/l~0.20mol/l; The concentration range of metallic iron ion is between 0.01mol/l~0.15mol/l, and the concentration of metal chromium ions is between 0.01mol/l~0.19mol/l.
On the basis of technique scheme, metallic iron ion [Fe 3+] and metallic cobalt ion [Co 3+] the volumetric molar concentration ratio in 1: 2.5 to 1: 3.5 scope.
On the basis of technique scheme, metal chromium ions [Cr 3+] and metallic cobalt ion [Co 3+] the volumetric molar concentration ratio in 1: 0.85 to 1: 1.25 scope.
Below be specific embodiment:
In first embodiment, adopt improved chemical vapor deposition method (MCVD) at quartzy parent tube inside deposition covering, this covering is by silicon tetrachloride, germanium tetrachloride, O 2And C 2F 6Reacting gas issues biochemical reaction in the heating of oxyhydrogen flame, generates transparent quartz glass covering; Then, at the loose cavernous quartz glass powder of covering inside deposition, this powder is the opaque silicon dioxide of white; With compound concentration in advance is the cobalt ions (Co of 0.05 mol 3+) with the metallic iron ion (Fe of 0.015 mol 3+) mixed solution packs in the loose deposition quartz ampoule, solution soaking after 1.5 hours is taken out solution, moltenly shortens it into solid quartz glass plug then.The refractive index profile figure of this plug sees shown in Figure 1.This plug is packed in the quartz socket tube of certain size, form high attenuating fiber prefabricated rods.This prefabricated rods is placed on the wire-drawer-tower, and to become cladding diameter be 125 micron fiber to melt drawing under the high temperature about 2200 ℃.Recording this fibre core diameter through fiber geometries size measuring appearance PK2400 is 8.2 microns; The fibre core numerical aperture that adopts optical fiber comprehensive tester PK2500 to record this optical fiber is 0.13, records the absorption coefficient of this high attenuating fiber in 1250nm~1625nm wavelength coverage and sees shown in Figure 2.Its absorption coefficient at the 1310nm wavelength is 3.058dB/cm, is 2.89dB/cm at the absorption coefficient of 1550nm wavelength.This optical fiber has a smooth absorption characteristic in 1250nm~1625nm wavelength coverage, its flatness is in ± 3.8%.
In a second embodiment, adopt improved chemical vapor deposition method (MCVD) at quartzy parent tube inside deposition covering, this covering is by silicon tetrachloride, germanium tetrachloride, O 2And C 2F 6Reacting gas issues biochemical reaction in the heating of oxyhydrogen flame, generates transparent quartz glass covering; Then, at the loose cavernous quartz glass powder of covering inside deposition, this powder is the opaque silicon dioxide of white; With compound concentration in advance is the cobalt ions (Co of 0.045 mol 3+) with the metal chromium ions [Cr of 0.032 mol 3+] mixed solution packs in the loose deposition quartz ampoule, solution soaking after 5 hours is taken out solution, moltenly shortens it into solid quartz glass plug then.This plug is packed in the quartz socket tube of certain size, form high attenuating fiber prefabricated rods.This prefabricated rods is placed on the wire-drawer-tower, and to become cladding diameter be 125 micron fiber to melt drawing under the high temperature about 2200 ℃.Through test, this fibre core diameter is 8.5 microns, and the fibre core numerical aperture is 0.14.The absorption coefficient of this high attenuating fiber in 1250nm~1625nm wavelength coverage seen shown in Figure 3.Its absorption coefficient at the 1310nm wavelength is 3.081dB/cm, is 3.012dB/cm at the absorption coefficient of 1550nm wavelength.This optical fiber has a smooth absorption characteristic in 1250nm~1625nm wavelength coverage, its flatness is in ± 1.3%.
In the 3rd embodiment, adopt improved chemical vapor deposition method (MCVD) at quartzy parent tube inside deposition covering, this covering is by silicon tetrachloride, germanium tetrachloride, O 2And C 2F 6Reacting gas issues biochemical reaction in the heating of oxyhydrogen flame, generates transparent quartz glass covering; Then, at the loose cavernous quartz glass powder of covering inside deposition, this powder is the opaque silicon dioxide of white; With compound concentration in advance is the cobalt ions (Co of 0.11 mol 3+) with the metallic iron ion (Fe of 0.045 mol 3+) mixed solution packs in the loose deposition quartz ampoule, solution soaking after 3 hours is taken out solution, moltenly shortens it into solid quartz glass plug then.This plug is packed in the quartz socket tube of certain size, form high attenuating fiber prefabricated rods.This prefabricated rods is placed on the wire-drawer-tower, and to become cladding diameter be 125 micron fiber to melt drawing under the high temperature about 2200 ℃.Through test, this fibre core diameter is 8.0 microns, and the fibre core numerical aperture is 0.15.The absorption coefficient of this high attenuating fiber in 1250nm~1625nm wavelength coverage seen shown in Figure 4.Its absorption coefficient at the 1310nm wavelength is 8.138dB/cm, is 7.946dB/cm at the absorption coefficient of 1550nm wavelength.This optical fiber has a smooth absorption characteristic in 1250nm~1625nm wavelength coverage, its flatness is in ± 1.9%.
In the 4th embodiment, adopt improved chemical vapor deposition method (MCVD) at quartzy parent tube inside deposition covering, this covering is by silicon tetrachloride, germanium tetrachloride, O 2And C 2F 6Reacting gas issues biochemical reaction in the heating of oxyhydrogen flame, generates transparent quartz glass covering; Then, at the loose cavernous quartz glass powder of covering inside deposition, this powder is the opaque silicon dioxide of white; With compound concentration in advance is the cobalt ions (Co of 0.19 mol 3+) with the metal chromium ions [Cr of 0.152 mol 3+] mixed solution packs in the loose deposition quartz ampoule, solution soaking after 24 hours is taken out solution, moltenly shortens it into solid quartz glass plug then.This plug is packed in the quartz socket tube of certain size, form high attenuating fiber prefabricated rods.This prefabricated rods is placed on the wire-drawer-tower, and to become cladding diameter be 125 micron fiber to melt drawing under the high temperature about 2200 ℃.Through test, this fibre core diameter is 8.8 microns, and the fibre core numerical aperture is 0.16.The absorption coefficient of this high attenuating fiber in 1250nm~1625nm wavelength coverage seen shown in Figure 5.Its absorption coefficient at the 1310nm wavelength is 29.617dB/cm, is 29.039dB/cm at the absorption coefficient of 1550nm wavelength.This optical fiber has a smooth absorption characteristic in 1250nm~1625nm wavelength coverage, its flatness is in ± 1.7%.
Above-mentioned accompanying drawing and embodiment are only described for illustrative, protection scope of the present invention are not formed restriction, and protection domain of the present invention is limited claims.

Claims (5)

1. high attenuating fiber is characterized in that: comprises sandwich layer and, is coated with organic-containing materials at the covering outside surface around the covering of sandwich layer,
Said sandwich layer is by being made up of big receptivity and the metallic ion that in this wave band, has a smooth absorption characteristic the light of 1250nm~1625nm wavelength,
Said metallic ion comprises metallic cobalt ion and metallic iron ion, or metallic cobalt ion and metal chromium ions;
Said high attenuating fiber has smooth absorption characteristic in 1250nm~1625nm wavelength coverage, its flatness is in ± 4%.
2. high attenuating fiber as claimed in claim 1 is characterized in that: said high attenuating fiber at the absorption coefficient of 1250nm~1625nm wavelength coverage at 1dB/cm~30dB/cm.
3. the manufacturing approach of the said high attenuating fiber of claim 1 is characterized in that, its step is following:
Step 1 adopts improved chemical vapor deposition method at quartzy parent tube inside deposition covering, and said covering is by silicon tetrachloride, germanium tetrachloride, O 2And C 2F 6Reacting gas issues biochemical reaction in the heating of oxyhydrogen flame, generates transparent quartz glass covering;
Step 2, at the loose cavernous quartz glass powder of covering inside deposition, said quartz glass powder is the opaque silicon dioxide of white;
Step 3 will contain certain density metal ion solution and pack in the loose deposition quartz ampoule, soak after 0.5 hour~24 hours, and solution is taken out, and it melted to shorten solid quartz glass plug into then; Said metallic ion comprises metallic cobalt ion and metallic iron ion, or metallic cobalt ion and metal chromium ions;
Step 4 is packed the quartz glass plug in the supporting quartz socket tube into, so that reach the ratio of fibre core and covering, forms high attenuating fiber prefabricated rods;
Step 5 is placed in high attenuating fiber prefabricated rods on the wire-drawer-tower, and to become cladding diameter be 125 micron fiber to melt drawing under the high temperature about 2200 ℃;
The concentration range of metallic cobalt ion is between 0.01mol/l~0.20mol/l, and the concentration range of metallic iron ion is between 0.01mol/l~0.15mol/l, and the concentration of metal chromium ions is between 0.01mol/l~0.19mol/l.
4. the manufacturing approach of high attenuating fiber as claimed in claim 3 is characterized in that: the volumetric molar concentration ratio of metallic iron ion and metallic cobalt ion is in 1: 2.5 to 1: 3.5 scope.
5. the manufacturing approach of high attenuating fiber as claimed in claim 3 is characterized in that: the volumetric molar concentration ratio of metal chromium ions and metallic cobalt ion is in 1: 0.85 to 1: 1.25 scope.
CN 201010556038 2010-11-24 2010-11-24 High-attenuation optical fiber and manufacturing method of same Active CN102073093B (en)

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CN110395901B (en) * 2019-07-25 2020-04-24 武汉库克光电技术有限公司 High-attenuation optical fiber and preparation method thereof
CN115196871B (en) * 2022-09-13 2023-01-17 创昇光电科技(苏州)有限公司 Optical attenuator

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1327540A (en) * 1999-10-22 2001-12-19 昭和电线电缆株式会社 Optical attenuator
CN1455880A (en) * 2001-02-02 2003-11-12 奥普托内斯特公司 Optical fiber and planar waveguide for achieving substantially uniform optical attenuation
CN101441296A (en) * 2008-12-25 2009-05-27 哈尔滨工程大学 Wave guide layer-doped type capillary optical fiber and preparing method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1327540A (en) * 1999-10-22 2001-12-19 昭和电线电缆株式会社 Optical attenuator
CN1455880A (en) * 2001-02-02 2003-11-12 奥普托内斯特公司 Optical fiber and planar waveguide for achieving substantially uniform optical attenuation
CN101441296A (en) * 2008-12-25 2009-05-27 哈尔滨工程大学 Wave guide layer-doped type capillary optical fiber and preparing method thereof

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