CN103675992A - Infrared transmission composite optical fiber high in mechanical property and manufacturing method of infrared transmission composite optical fiber - Google Patents
Infrared transmission composite optical fiber high in mechanical property and manufacturing method of infrared transmission composite optical fiber Download PDFInfo
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- CN103675992A CN103675992A CN201310647718.5A CN201310647718A CN103675992A CN 103675992 A CN103675992 A CN 103675992A CN 201310647718 A CN201310647718 A CN 201310647718A CN 103675992 A CN103675992 A CN 103675992A
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Abstract
The invention relates to an infrared transmission composite optical fiber high in mechanical property and a manufacturing method of the infrared transmission composite optical fiber, and belongs to optical fibers, infrared transmission materials and manufacturing methods of the optical fibers and the infrared transmission materials. The composite optical fiber comprises a chalcogenide glass fiber core, a chalcogenide glass inner wrapping layer and a polyimide outer wrapping layer. The chalcogenide glass fiber core is an inner core, the chalcogenide glass fiber core is wrapped with the chalcogenide glass inner wrapping layer, and the chalcogenide glass is wrapped with the polyimide outer wrapping layer. The cross sectional area of the polyimide outer wrapping layer accounts for 30-99% of the total cross sectional area of the optical fiber. The tensile strength of the acquired infrared transmission composite optical fiber at room temperature is larger than or equal to 250Mpa, the diameter of the infrared transmission composite optical fiber without the polyimide outer wrapping layer is 300 micrometers, the minimum bending radius of the glass optical fiber is smaller than or equal to 20mm, and the transmission range of the optical fiber is among 1-12 micrometers. The infrared transmission composite optical fiber high in mechanical property and the manufacturing method of the infrared transmission composite optical fiber are applied to the fields of infrared transmission and non-linear optics. The infrared transmission composite optical fiber high in mechanical property and the manufacturing method of the infrared transmission composite optical fiber have the advantages that compared with a traditional infrared optical fiber, the optical fiber is improved in mechanical property and is wide in application range; the manufacturing technology of the optical fiber is simple, the drawing process is easy to control, and cost is low; post-processing can be carried out easily on the optical fiber, for example, conical fiber devices high in mechanical property can be manufactured through local heating.
Description
Technical field
The present invention relates to a kind of optical fiber and Infrared Transmission material and preparation method thereof, particularly a kind of high-mechanical property Infrared Transmission composite fiber and preparation method thereof.
Background technology
1 ~ 12 μ m Infrared Transmission optical fiber has important application background in fields such as Laser Transmission, hot pixels transmission, chemistry and bio-sensing, infrared spectroscopic studies.The bulk optical element that adopts Infrared Transmission optical fiber to replace in infrared system can greatly reduce system weight and reduce system bulk, significantly reduces infrared system cost, improves system performance.Infrared Transmission fibre bundle can transmit hot pixels at limited small space with under compared with strong electromagnetic radiation environment, realizes medical science and industrial high-quality thermal imaging.Infrared optical fiber also can be used for CO (5.4 μ m) and CO
2the transmission of (10.6 μ m) laser power realizes the remote control of energy; Because most fingerprint absorption of vibrations wavelength chemical and biomolecule are positioned at mid infrared region, Infrared Transmission optical fiber has been used to chemistry and bio-sensing, and extends to the detection to earth outer planet environment and life.
Silver halide crystal optical fiber and chalcogenide glass fiber are only two kinds of Infrared Transmission fiber optic materials on market.Silver halide crystal optical fiber has excellent transmission performance at 3 ~ 16 mu m wavebands, adopts extrusion molding preparation.Yet the stable row of the illumination of this type optical fiber and chemical stability are poor, expensive.Chalcogenide glass fiber is excellent in 1 ~ 12 mu m waveband transmission performance, adopts rod (rod-in-tube) or double crucible method preparation in pipe.Compare with silver halide crystal optical fiber, chalcogenide glass fiber has light stability and chemical stability is good, preparation simple, low cost and other advantages.
Yet the ubiquitous shortcoming of Infrared Transmission optical fiber is that physical strength is poor, this is to be determined by the weak Nature of bonding of material.Infrared optical fiber, in assembling and use procedure, easily fractures or breaks while particularly applying under the larger mechanical stress environment of easy generation, and this problem has limited its application.
Summary of the invention
The object of the present invention is to provide a kind of high-mechanical property Infrared Transmission composite fiber and preparation method thereof, solve the problems such as conventional Infrared Transmission mechanical fiber optic poor performance, frangibility.Be applicable to the fields such as Infrared Transmission, nonlinear optics.
The object of the present invention is achieved like this: this composite fiber comprises: chalcogenide glass fibre core, chalcogenide glass inner cladding and polyimide surrounding layer; Chalcogenide glass fibre core is inner core, at chalcogenide glass fibre core, has chalcogenide glass inner cladding outward, at chalcogenide glass inner cladding, is wrapped with polyimide surrounding layer;
Described chalcogenide glass is the chalcogenide glass that two or more elements of take in germanium, arsenic, antimony, sulphur, selenium and tellurium are component; Described polyimide polymer is TPI, comprises polypyromelliticimide and biphenyl polyimide; The cross-sectional area of described optical fiber polyimide surrounding layer accounts for the 30-99% of the total cross-sectional area of optical fiber.
Described composite fiber adopts high temperature daraf(reciprocal of farad) preparation altogether, the chalcogenide glass rod of selecting composition of usining is less than plug chalcogenide glass sleeve pipe as plug, the refractive index of usining is assembled into preform as inner cladding, the polyimide polymer sleeve pipe of usining as surrounding layer, then at high temperature draws altogether and obtains described high-mechanical property Infrared Transmission composite fiber.
Beneficial effect: owing to having adopted such scheme; utilized the thermoplastic polyimide polymer of high-mechanical property, high temperature resistant, radiation hardness, resistance to chemical attack as surrounding layer, when protection optical fiber is not subject to environmental attack the mechanical property of optical fiber integrally has been greatly improved.Room temperature tensile strength >=the 250Mpa of Infrared Transmission composite fiber of preparation, diameter is that 300 μ m(are containing polyimide surrounding layer size) minimum bending radius≤20mm of glass optical fiber, Optical Fiber Transmission wavelength coverage is positioned between 1 ~ 12 μ m.Can be used for the fields such as Infrared Transmission, nonlinear optics.
Advantage: the 1. mechanical property ratio traditional infrared optical fiber of optical fiber significantly improves, applied range; 2. optical fiber preparation technology is simple, and drawing process is easy to control, and cost is low; 3. optical fiber easily carries out aftertreatment, as made high-mechanical property conical fiber device by spot heating.
Accompanying drawing explanation
Fig. 1 is preform assembling schematic diagram.
Fig. 2 is Infrared Transmission composite fiber cross sectional representation.
In figure, 1, prefabricated rod mandrel; 2, prefabricated rods inner cladding sleeve pipe; 3, prefabricated rods surrounding layer sleeve pipe; 4, chalcogenide glass fibre core; 5, chalcogenide glass inner cladding; 6, polyimide surrounding layer.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are further described:
High-mechanical property Infrared Transmission composite fiber of the present invention, comprising: chalcogenide glass fibre core, chalcogenide glass inner cladding and polyimide surrounding layer; Chalcogenide glass fibre core is inner core, at chalcogenide glass fibre core, has chalcogenide glass inner cladding outward, at chalcogenide glass inner cladding, is wrapped with polyimide surrounding layer; Described chalcogenide glass is the chalcogenide glass that two or more elements of take in germanium, arsenic, antimony, sulphur, selenium and tellurium are component; Described polyimide polymer is TPI, comprises polypyromelliticimide and biphenyl polyimide; The cross-sectional area of described optical fiber polyimide surrounding layer accounts for the 30-99% of the total cross-sectional area of optical fiber.
Embodiment 1: the fibre core of composite fiber is Ge
13as
24se
63chalcogenide glass, chalcogenide glass fibre core 4, and inner cladding is Ge
12as
25se
63chalcogenide glass, surrounding layer is biphenyl type TPI (Tg=280
oc).
Composite fiber adopts high temperature daraf(reciprocal of farad) preparation altogether, with Ge
13as
24se
63chalcogenide glass as prefabricated rod mandrel 1, with refractive index, be less than the Ge of prefabricated rod mandrel 1
12as
25se
63chalcogenide glass sleeve pipe is as prefabricated rods inner cladding sleeve pipe 2, with Tg=280
oCbiphenyl type thermoplastic polyimide polymer sleeve pipe is assembled into preform as prefabricated rods surrounding layer sleeve pipe 3, then at high temperature draws altogether and obtains described high-mechanical property Infrared Transmission composite fiber.
Concrete implementation step is: the Ge that is 5mm by diameter
13as
24se
63prefabricated rod mandrel 1, internal-and external diameter are respectively the Ge of 5.1mm and 10mm
12as
25se
63prefabricated rods inner cladding sleeve pipe 2, internal-and external diameter are respectively the biphenyl type TPI (Tg=280 of 10.1mm and 12mm
oc) prefabricated rods surrounding layer sleeve pipe 3 is according to being assembled into optical fiber prefabricated rod mandrel 1 shown in Fig. 1, then 380
oCpull into the optical fiber that overall diameter is 360 μ m, be described Infrared Transmission composite fiber, the cross-sectional area of polyimide surrounding layer accounts for 30% of the total cross-sectional area of optical fiber.Fig. 2 is gained composite fiber cross sectional representation, comprises chalcogenide glass fibre core 4, chalcogenide glass inner cladding 5 and polyimide surrounding layer 6; Chalcogenide glass fibre core is inner core, at chalcogenide glass fibre core, has chalcogenide glass inner cladding outward, at chalcogenide glass inner cladding, is wrapped with polyimide surrounding layer.
Adopt the fracture strength of longitudinal pulling force machine measuring optical fiber, optical fiber two ends are fixed in puller system mould, with specimen length 3%-5%/minute speed tensile sample, optical fiber sample is broken, write down the stress value of fracture, finally according to the record statistics optical fiber accumulated probability that ruptures under different tension intensitys, distribute, make your distribution curve of prestige pool, be used for evaluating fibre tensile strength; Adopt the bending strength of 2 bending method measuring fibers of parallel-plate, sample is crooked and be placed between the two boards of a determining deviation, with specimen length 2%-3%/minute speed mutually shift near, until optical fiber surrender (fractureing), obtain minimum bending radius, finally according to record statistics optical fiber, under differently curved radius, surrender accumulated probability and distribute, make prestige pool that distribution curve, be used for evaluating optical fiber minimum bending radius; The transmission performance that adopts the Fourier infrared spectrograph measuring fiber that is equipped with fibre loss test accessories, loss obtains by intercept method.
Testing result shows: the tensile strength of optical fiber is 280Mpa; The minimum bending radius of optical fiber is 20mm; Optical fiber is excellent in 2 ~ 8 μ m transmission performances, and lowest loss is 0.6dB/m.
Embodiment 2: the fibre core of composite fiber is Ge
25sb
10s
65chalcogenide glass, inner cladding is Ge
25.5sb
9.5s
65chalcogenide glass, surrounding layer is equal benzene type TPI (Tg=380
oc).
Composite fiber adopts high temperature daraf(reciprocal of farad) preparation altogether, with Ge
25sb
10s
65chalcogenide glass as prefabricated rod mandrel, with refractive index, be less than the Ge of prefabricated rod mandrel
25.5sb
9.5s
65chalcogenide glass sleeve pipe is as prefabricated rods inner cladding sleeve pipe, with Tg=380
oCall benzene type thermoplastic polyimide polymer sleeve pipe becomes preform as prefabricated rods surrounding layer sleeve-assembled, then at high temperature draws altogether and obtains described high-mechanical property Infrared Transmission composite fiber.
Concrete implementation step: the Ge that is 5mm by diameter
25sb
10s
65prefabricated rod mandrel, internal-and external diameter are respectively the Ge of 5.1mm and 10mm
25.5sb
9.5s
65prefabricated rods inner cladding sleeve pipe, internal-and external diameter are respectively the equal benzene type TPI (Tg=380 of 10.1mm and 15mm
oc) prefabricated rods surrounding layer sleeve pipe is assembled into preform according to shown in Fig. 1, then 500
oc pulls into the optical fiber that overall diameter is 300 μ m, is described Infrared Transmission composite fiber, and the cross-sectional area of polyimide surrounding layer accounts for 55% of the total cross-sectional area of optical fiber.
Adopt the fracture strength of longitudinal pulling force machine measuring optical fiber, optical fiber two ends are fixed in puller system mould, with specimen length 3%-5%/minute speed tensile sample, optical fiber sample is broken, write down the stress value of fracture, finally according to the record statistics optical fiber accumulated probability that ruptures under different tension intensitys, distribute, make your distribution curve of prestige pool, be used for evaluating fibre tensile strength; Adopt the bending strength of 2 bending method measuring fibers of parallel-plate, sample is crooked and be placed between the two boards of a determining deviation, with specimen length 2%-3%/minute speed mutually shift near, until optical fiber surrender (fractureing), obtain minimum bending radius, finally according to record statistics optical fiber, under differently curved radius, surrender accumulated probability and distribute, make prestige pool that distribution curve, be used for evaluating optical fiber minimum bending radius; The transmission performance that adopts the Fourier infrared spectrograph measuring fiber that is equipped with fibre loss test accessories, loss obtains by intercept method.
Testing result shows: the tensile strength of optical fiber is 310Mpa; The minimum bending radius of optical fiber is 12mm; Optical fiber is excellent in 1 ~ 6 μ m transmission performance, and lowest loss is 0.8dB/m.
Embodiment 3: the fibre core of composite fiber is Ge
20as
20te
46se
14chalcogenide glass, inner cladding is Ge
20as
20te
45se
15chalcogenide glass, surrounding layer is biphenyl type TPI (Tg=280
oc).
Composite fiber adopts high temperature daraf(reciprocal of farad) preparation altogether, with Ge
20as
20te
46se
14chalcogenide glass as prefabricated rod mandrel, with refractive index, be less than the Ge of prefabricated rod mandrel
20as
20te
45se
15chalcogenide glass sleeve pipe is as prefabricated rods inner cladding sleeve pipe, with Tg=280
oCbiphenyl type thermoplastic polyimide polymer sleeve pipe becomes preform as prefabricated rods surrounding layer sleeve-assembled, then at high temperature draws altogether and obtains described high-mechanical property Infrared Transmission composite fiber.
Concrete implementation step is: the Ge that is 5mm by diameter
20as
20te
46se
14prefabricated rod mandrel, internal-and external diameter are respectively the Ge of 5.1mm and 10mm
20as
20te
45se
15prefabricated rods inner cladding sleeve pipe, internal-and external diameter are respectively the biphenyl type TPI (Tg=280 of 10.1mm and 30mm
oc) prefabricated rods surrounding layer sleeve pipe is assembled into preform according to shown in Fig. 1, then 370
oc pulls into the optical fiber that overall diameter is 450 μ m, is described Infrared Transmission composite fiber, and the cross-sectional area of polyimide surrounding layer accounts for 88% of the total cross-sectional area of optical fiber.
Adopt the fracture strength of longitudinal pulling force machine measuring optical fiber, optical fiber two ends are fixed in puller system mould, with specimen length 3%-5%/minute speed tensile sample, optical fiber sample is broken, write down the stress value of fracture, finally according to the record statistics optical fiber accumulated probability that ruptures under different tension intensitys, distribute, make your distribution curve of prestige pool, be used for evaluating fibre tensile strength; Adopt the bending strength of 2 bending method measuring fibers of parallel-plate, sample is crooked and be placed between the two boards of a determining deviation, with specimen length 2%-3%/minute speed mutually shift near, until optical fiber surrender (fractureing), obtain minimum bending radius, finally according to record statistics optical fiber, under differently curved radius, surrender accumulated probability and distribute, make prestige pool that distribution curve, be used for evaluating optical fiber minimum bending radius; The transmission performance that adopts the Fourier infrared spectrograph measuring fiber that is equipped with fibre loss test accessories, loss obtains by intercept method.
Testing result shows: the tensile strength of optical fiber is 250Mpa; The minimum bending radius of optical fiber is 8mm; Optical fiber is excellent in 4 ~ 12 μ m transmission performances, and lowest loss is 0.8dB/m.
Embodiment 4: the fibre core of composite fiber is As
40s
60chalcogenide glass, inner cladding is As
39.5s
60.5chalcogenide glass, surrounding layer is biphenyl type TPI (Tg=280
oc).
Composite fiber adopts high temperature daraf(reciprocal of farad) preparation altogether, with As
40s
60chalcogenide glass as prefabricated rod mandrel, with refractive index, be less than the As of plug
39.5s
60.5chalcogenide glass sleeve pipe is as prefabricated rods inner cladding sleeve pipe, with Tg=280
oCbiphenyl type thermoplastic polyimide polymer sleeve pipe becomes preform as prefabricated rods surrounding layer sleeve-assembled, then at high temperature draws altogether and obtains described high-mechanical property Infrared Transmission composite fiber.
Concrete implementation step is: the As that is 5mm by diameter
40s
60prefabricated rod mandrel, internal-and external diameter are respectively the As of 5.1mm and 10mm
39.5s
60.5prefabricated rods inner cladding sleeve pipe, internal-and external diameter are respectively the biphenyl type TPI (Tg=280 of 10.1mm and 20mm
oc) prefabricated rods surrounding layer sleeve pipe is assembled into preform according to Fig. 1, first 375
oc pulls into the thin rod that overall diameter is 4mm, then the thin rod of gained is put into the biphenyl type TPI sleeve pipe that internal-and external diameter is respectively 4.1mm and 20mm and is formed new preform, finally by new prefabricated rods 375
oc pulls into the optical fiber that overall diameter is 300 μ m, is described Infrared Transmission composite fiber, and the cross-sectional area of polyimide surrounding layer accounts for 99% of the total cross-sectional area of optical fiber.
Adopt the fracture strength of longitudinal pulling force machine measuring optical fiber, optical fiber two ends are fixed in puller system mould, with specimen length 3%-5%/minute speed tensile sample, optical fiber sample is broken, write down the stress value of fracture, finally according to the record statistics optical fiber accumulated probability that ruptures under different tension intensitys, distribute, make your distribution curve of prestige pool, be used for evaluating fibre tensile strength; Adopt the bending strength of 2 bending method measuring fibers of parallel-plate, sample is crooked and be placed between the two boards of a determining deviation, with specimen length 2%-3%/minute speed mutually shift near, until optical fiber surrender (fractureing), obtain minimum bending radius, finally according to record statistics optical fiber, under differently curved radius, surrender accumulated probability and distribute, make prestige pool that distribution curve, be used for evaluating optical fiber minimum bending radius; The transmission performance that adopts the Fourier infrared spectrograph measuring fiber that is equipped with fibre loss test accessories, loss obtains by intercept method.
Testing result shows: the tensile strength of optical fiber is 270Mpa; The minimum bending radius of optical fiber is 4mm; Optical fiber is excellent in 1 ~ 6 μ m transmission performance, and lowest loss is 0.5dB/m.
Claims (2)
1. a high-mechanical property Infrared Transmission composite fiber, is characterized in that: this composite fiber comprises: chalcogenide glass fibre core, chalcogenide glass inner cladding and polyimide surrounding layer; Chalcogenide glass fibre core is inner core, at chalcogenide glass fibre core, has chalcogenide glass inner cladding outward, at chalcogenide glass inner cladding, is wrapped with polyimide surrounding layer;
Described chalcogenide glass is the chalcogenide glass that two or more elements of take in germanium, arsenic, antimony, sulphur, selenium and tellurium are component; Described polyimide polymer is TPI, comprises polypyromelliticimide and biphenyl polyimide; The cross-sectional area of described optical fiber polyimide surrounding layer accounts for the 30-99% of the total cross-sectional area of optical fiber.
2. the preparation method of high-mechanical property Infrared Transmission composite fiber according to claim 1, it is characterized in that: composite fiber adopts high temperature daraf(reciprocal of farad) preparation altogether, the chalcogenide glass rod of selecting composition of usining is less than plug chalcogenide glass sleeve pipe as plug, the refractive index of usining is assembled into preform as inner cladding, the polyimide polymer sleeve pipe of usining as surrounding layer, then at high temperature draws altogether and obtains described high-mechanical property Infrared Transmission composite fiber.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181636A (en) * | 2014-08-25 | 2014-12-03 | 江苏师范大学 | Flexible high-resolution infrared chalcogenide glass optical fiber image transmission bundle and manufacturing method |
| CN110683753A (en) * | 2019-10-11 | 2020-01-14 | 华中科技大学 | Low-cost batch preparation method and system for multi-material multi-structure mid-infrared optical fiber |
| CN111061003A (en) * | 2019-12-13 | 2020-04-24 | 江苏师范大学 | Semiconductor germanium core-metal-glass cladding composite material mid-infrared optical fiber and preparation method thereof |
| CN111580230A (en) * | 2020-03-02 | 2020-08-25 | 华中科技大学 | Flexible optical fiber, preparation method and drivable laser scalpel based on optical fiber |
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| CN101428963A (en) * | 2008-12-10 | 2009-05-13 | 中国科学院上海光学精密机械研究所 | Mold device and method for manufacturing multi-component glass optical fiber preform |
| CN202275184U (en) * | 2011-10-12 | 2012-06-13 | 深圳大学 | Mid-infrared optical fiber |
| CN102976607A (en) * | 2011-09-06 | 2013-03-20 | 苏州佳因特光电科技有限公司 | Single-mode chalcogenide glass optical fiber and preparation method thereof |
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Patent Citations (4)
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| CN101373239A (en) * | 2008-10-07 | 2009-02-25 | 华南理工大学 | High gain double-cladding two-dimensional array optical fiber and preparation method thereof |
| CN101428963A (en) * | 2008-12-10 | 2009-05-13 | 中国科学院上海光学精密机械研究所 | Mold device and method for manufacturing multi-component glass optical fiber preform |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181636A (en) * | 2014-08-25 | 2014-12-03 | 江苏师范大学 | Flexible high-resolution infrared chalcogenide glass optical fiber image transmission bundle and manufacturing method |
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| CN110683753A (en) * | 2019-10-11 | 2020-01-14 | 华中科技大学 | Low-cost batch preparation method and system for multi-material multi-structure mid-infrared optical fiber |
| CN111061003A (en) * | 2019-12-13 | 2020-04-24 | 江苏师范大学 | Semiconductor germanium core-metal-glass cladding composite material mid-infrared optical fiber and preparation method thereof |
| CN111061003B (en) * | 2019-12-13 | 2021-05-14 | 江苏师范大学 | Semiconductor germanium core-metal-glass cladding composite material mid-infrared optical fiber and preparation method thereof |
| CN111580230A (en) * | 2020-03-02 | 2020-08-25 | 华中科技大学 | Flexible optical fiber, preparation method and drivable laser scalpel based on optical fiber |
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Application publication date: 20140326 |