CN108333667A - A kind of resistance to mechanical fatigue moisture-proof heatproof optical fiber - Google Patents
A kind of resistance to mechanical fatigue moisture-proof heatproof optical fiber Download PDFInfo
- Publication number
- CN108333667A CN108333667A CN201810060637.8A CN201810060637A CN108333667A CN 108333667 A CN108333667 A CN 108333667A CN 201810060637 A CN201810060637 A CN 201810060637A CN 108333667 A CN108333667 A CN 108333667A
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- Prior art keywords
- optical fiber
- coat
- resistance
- moisture
- mechanical fatigue
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- 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
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
-
- 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
- G02B6/02395—Glass optical fibre with a protective coating, e.g. two layer polymer coating deposited directly on a silica cladding surface during fibre manufacture
-
- 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
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/4436—Heat resistant
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
The present invention relates to a kind of resistance to mechanical fatigue moisture-proof heatproof optical fiber, coat including quartz glass optical fiber and cladding quartz glass optical fiber, it is characterized in that the coat includes interior coat and outer coat successively from the inside to the outside, the interior coat is high-compactness coat, and the outer coat is polyimide coating layer.The high-compactness coat is gold or silver-colored coat.The present invention is used as interior coat by the way that fine and close golden or silver-colored coat is arranged in fiber outer surface; form the fine and close protective film that chemical and physical properties are stablized; resist the intrusion of hydrogen and hydrone in high humidity environment; prevent microcrack in fibers extension from increasing the optical fiber endurance service life; also improve the intensity of optical fiber; the long-time service temperature of optical fiber is up to 300 DEG C, and short-period used temperature is up to 400 DEG C；Optical fiber structure of the present invention is simple, and setting is reasonable, can fully meet resistance to mechanical fatigue, the application requirement of the particular surroundings such as resistance to high humidity high temperature resistant.
Description
Technical field
The invention particularly relates to a kind of resistance to mechanical fatigue moisture-proof heatproof optical fiber, the fiber optic communication belonged to and sensing technology neck
Domain.
Background technology
With the development of special optical fiber technology, the application field of optical fiber is expanded, but with the expansion of application field
More and more application circumstances also propose optical fiber new requirement.Such as in petroleum and petrochemical industry and mineral industry, distribution
Formula optical fiber sensing（DTS）And distributed optical fiber stress sensing（DAS）In, be often related to high temperature and humidity and
The particular surroundings such as mechanical fatigue damage.
In the prior art, for the resistance to mechanical of optical fiber fatigue and the demand of resistance to high humility, the measure generally taken be into
The processing of row deuterium applies last layer agraphitic carbon in glass surface.For example, public in Chinese patent literature CN203849453U
A kind of carbon coating resistant to hydrogen optical fiber is opened, the technology outside fiber glass covering by being arranged agraphitic carbon coat, to resist hydroxyl
The invasion of base prevents microcrack in fibers extension from increasing the optical fiber endurance service life.However, special due to carbon coating processes
Property, the fiber strength of carbon coating substantially reduces, can not long range on a large scale use.For heat safe demand, generally take
Measure be optical fiber use polyimide coating layer.However, there is water suction liberation of hydrogen in the process used in polyimide coating layer
Problem limits the service life of optical fiber.
Invention content
Technical problem to be solved by the present invention lies in view of the deficiency of the prior art, provide a kind of resistance to mechanical
Tired moisture-proof heatproof optical fiber, which not only has higher intensity and resistance to mechanical fatigue energy, but also can meet moisture-proof heatproof
Application requirement.
The present invention is that technical solution used by solving technical problem set forth above is：Including quartz glass optical fiber and packet
Cover the coat of quartz glass optical fiber, it is characterised in that the coat includes interior coat and outer coating successively from the inside to the outside
Layer, the interior coat are high-compactness coat, and the outer coat is polyimide coating layer.
By said program, the high-compactness coat is gold or silver-colored coat.
By said program, the golden or silver-colored coat is formed using hot-spraying technique.
By said program, the golden or silver-colored coat one-sided thickness is 10 ~ 50nm.
By said program, the polyimide coating layer one-sided thickness is 10 ~ 25 μm.
By said program, the quartz glass optical fiber is single mode optical fiber, multimode fibre, energy-transmission optic fibre or special light
It is fine.
By said program, the quartz glass optical fiber includes sandwich layer and covering.
By said program, the optical fiber dynamic fatigue coefficient Nd is greater than or equal to 200.
By said program, the long-time service temperature of the optical fiber is up to 300 DEG C, and short-period used temperature is up to 400 DEG C.By above-mentioned side
Case, for the optical fiber in wet environment, the added losses of operating wave strong point are less than 0.01 dB/km.
The beneficial effects of the present invention are：1, pass through the golden coat of densification in fiber outer surface setting 10 ~ 50nm thickness
As interior coat, the fine and close protective film of chemical and physical properties stabilization can be formed, resist in high humidity environment hydrogen and
The intrusion of hydrone prevents microcrack in fibers extension from increasing the optical fiber endurance service life；2, the tolerable temperature of golden coat is big
In 700 DEG C, the long-term tolerable temperature of the polyimide coating layer of outer coating is 300 DEG C, and short-term tolerance temperature is up to 400 DEG C, therefore
The long-time service temperature of optical fiber is up to 300 DEG C, and short-period used temperature is up to 400 DEG C；3, the setting of fine and close golden coat, also improves light
Fine intensity, increases the application possibility of optical fiber distance signal transmission or sensing；4, optical fiber structure of the present invention is simple, if
It sets rationally, can fully meet resistance to mechanical fatigue, the application requirement of the particular surroundings such as resistance to high humidity high temperature resistant.
Description of the drawings
Fig. 1 is the optical fiber radial section structural schematic diagram of one embodiment of the invention.
Specific implementation mode
The invention will be further described with reference to the accompanying drawings and examples and explanation.
The embodiment of the present invention is as shown in Figure 1, the coat including quartz glass optical fiber and cladding quartz glass optical fiber, stone
English glass optical fiber includes sandwich layer 1 and covering 2, quartz glass optical fiber（Bare fibre）Outer surface coats interior coat successively from the inside to the outside
3 and outer coat 4.The interior coat is high-compactness coat, and the high-compactness coat is golden coat, institute
The outer coat stated is polyimide coating layer.
Embodiment 1：Quartz glass optical fiber is common G.652 single mode optical fiber, and cladding diameter is 125 μm, and golden coat is unilateral
Thickness is 25nm, and outer coat polyimide coating layer one-sided thickness is 15 μm.Optical fiber is sieved by 100kpsi proof strengths
Choosing, output effective length are 10km, and the dynamic fatigue coefficient Nd of optical fiber is 232, and the tensile strength of optical fiber is under 50% fracture probability
5.8 GPa, the test of high-pressure high-concentration hydrogen loss（Test condition：1.3 MPa, 100%H2 concentration, 15days）In, 1240nm and
The added losses of 1530nm wavelength are 0.0052 dB/km, and optical fiber continued 300 DEG C of high temperature, 1310nm and 1550nm by 30 days
The added losses of wavelength are 0.125 dB/km.
Embodiment 2：Quartz glass optical fiber is 50/125 optical fiber of multi-mode structure, and 50 μm of sandwich layer diameter, cladding diameter is 125 μ
M, golden coat one-sided thickness are 15nm, and polyimide coating layer one-sided thickness is 15 μm.Optical fiber passes through 100kpsi proof strengths
It is screened, output effective length is more than 10km, and the dynamic fatigue coefficient Nd of optical fiber is 259, and optical fiber is anti-under 50% fracture probability
Tensile strength is 5.9 GPa, the test of high-pressure high-concentration hydrogen loss（Test condition：1.3 MPa, 100%H2 concentration, 15days）In,
The added losses of 1240nm and 1300nm wavelength are 0.0049 dB/km, and optical fiber continued 300 DEG C of high temperature, 850nm by 30 days
And the added losses of 1300nm wavelength are 0.224 dB/km.
Embodiment 3：Quartz glass optical fiber is the extraordinary large core fiber of multi-mode structure 105/125.A diameter of 1055 μm of sandwich layer,
Cladding diameter is 125 μm, and golden coat one-sided thickness is 35nm, and polyimide coating layer one-sided thickness is 15 μm.Optical fiber passes through
100kpsi proof strengths are screened, and output effective length is more than 10km, and the dynamic fatigue coefficient Nd of optical fiber is 278, and 50% is disconnected
The tensile strength for splitting optical fiber under probability is 6.2 GPa, the test of high-pressure high-concentration hydrogen loss（Test condition：1.3 MPa, 100%H2 are dense
Degree, 15days）In, the added losses of 1240nm and 1300nm wavelength are 0.0082 dB/km, and optical fiber continued 300 by 30 days
The added losses of DEG C high temperature, 850nm wavelength are 0.269 dB/km.
Claims (10)
1. a kind of resistance to mechanical fatigue moisture-proof heatproof optical fiber includes the coat of quartz glass optical fiber and cladding quartz glass optical fiber,
It is characterized in that the coat includes interior coat and outer coat successively from the inside to the outside, the interior coat is high causes
Density coat, the outer coat are polyimide coating layer.
2. resistance to mechanical fatigue moisture-proof heatproof optical fiber as described in claim 1, it is characterised in that the high-compactness coat
For gold or silver-colored coat.
3. resistance to mechanical fatigue moisture-proof heatproof optical fiber as described in claim 1 or 2, it is characterised in that the gold or silver coating
Layer is formed using hot-spraying technique.
4. resistance to mechanical fatigue moisture-proof heatproof optical fiber as described in claim 3, it is characterised in that the golden or silver-colored coat
One-sided thickness is 10 ~ 50nm.
5. resistance to mechanical fatigue moisture-proof heatproof optical fiber as described in claim 1 or 2, it is characterised in that the polyimide coating
Layer one-sided thickness is 10 ~ 25 μm.
6. resistance to mechanical fatigue moisture-proof heatproof optical fiber as described in claim 1 or 2, it is characterised in that the quartz glass optical fiber
For single mode optical fiber, multimode fibre, energy-transmission optic fibre or special optical fiber.
7. resistance to mechanical fatigue moisture-proof heatproof optical fiber as described in claim 1 or 2, it is characterised in that the quartz glass optical fiber
Including sandwich layer and covering.
8. resistance to mechanical fatigue moisture-proof heatproof optical fiber as described in claim 1 or 2, it is characterised in that optical fiber dynamic fatigue system
Number Nd is greater than or equal to 200.
9. resistance to mechanical fatigue moisture-proof heatproof optical fiber as described in claim 8, it is characterised in that the long-time service temperature of the optical fiber
Degree is up to 300 DEG C, and short-period used temperature is up to 400 DEG C.
10. resistance to mechanical fatigue moisture-proof heatproof optical fiber as described in claim 8, it is characterised in that the optical fiber is in wet environment
In, the added losses of operating wave strong point are less than 0.01dB/km.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810060637.8A CN108333667A (en) | 2018-01-22 | 2018-01-22 | A kind of resistance to mechanical fatigue moisture-proof heatproof optical fiber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810060637.8A CN108333667A (en) | 2018-01-22 | 2018-01-22 | A kind of resistance to mechanical fatigue moisture-proof heatproof optical fiber |
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| CN108333667A true CN108333667A (en) | 2018-07-27 |
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| CN201810060637.8A Pending CN108333667A (en) | 2018-01-22 | 2018-01-22 | A kind of resistance to mechanical fatigue moisture-proof heatproof optical fiber |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459829A (en) * | 2018-12-12 | 2019-03-12 | 安徽光纤光缆传输技术研究所(中国电子科技集团公司第八研究所) | A kind of guided fiber optical cable and production method |
| CN113292256A (en) * | 2021-06-18 | 2021-08-24 | 江苏华能电缆股份有限公司 | High-temperature-resistant and hydrogen-loss-resistant polyimide coating process for surface of optical fiber |
| CN113307511A (en) * | 2021-06-11 | 2021-08-27 | 中国建筑材料科学研究总院有限公司 | Quartz optical fiber and preparation method and device thereof |
| CN113946012A (en) * | 2021-11-02 | 2022-01-18 | 长飞光纤光缆股份有限公司 | Bending-resistant optical fiber and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59155804A (en) * | 1983-02-25 | 1984-09-05 | Fujikura Ltd | Optical fiber having metallic coated layer |
| CN103995332A (en) * | 2014-05-21 | 2014-08-20 | 北京亨通斯博通讯科技有限公司 | Novel temperature-measuring air-blowing type micro optical cable |
| CN104155716A (en) * | 2014-08-14 | 2014-11-19 | 武汉北方光电科技有限公司 | Low-loss and high-temperature-resistant optical fiber |
| CN204287561U (en) * | 2014-12-19 | 2015-04-22 | 金湖金诚电子科技有限公司 | High-performance single-mode fiber jumper |
| CN105676349A (en) * | 2016-04-06 | 2016-06-15 | 武汉邮电科学研究院 | Bend-insensitive radiation-resistant single-mode fiber |
-
2018
- 2018-01-22 CN CN201810060637.8A patent/CN108333667A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59155804A (en) * | 1983-02-25 | 1984-09-05 | Fujikura Ltd | Optical fiber having metallic coated layer |
| CN103995332A (en) * | 2014-05-21 | 2014-08-20 | 北京亨通斯博通讯科技有限公司 | Novel temperature-measuring air-blowing type micro optical cable |
| CN104155716A (en) * | 2014-08-14 | 2014-11-19 | 武汉北方光电科技有限公司 | Low-loss and high-temperature-resistant optical fiber |
| CN204287561U (en) * | 2014-12-19 | 2015-04-22 | 金湖金诚电子科技有限公司 | High-performance single-mode fiber jumper |
| CN105676349A (en) * | 2016-04-06 | 2016-06-15 | 武汉邮电科学研究院 | Bend-insensitive radiation-resistant single-mode fiber |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459829A (en) * | 2018-12-12 | 2019-03-12 | 安徽光纤光缆传输技术研究所(中国电子科技集团公司第八研究所) | A kind of guided fiber optical cable and production method |
| CN109459829B (en) * | 2018-12-12 | 2024-04-05 | 安徽光纤光缆传输技术研究所(中国电子科技集团公司第八研究所) | Guidance optical fiber cable and production method |
| CN113307511A (en) * | 2021-06-11 | 2021-08-27 | 中国建筑材料科学研究总院有限公司 | Quartz optical fiber and preparation method and device thereof |
| CN113307511B (en) * | 2021-06-11 | 2022-06-28 | 中国建筑材料科学研究总院有限公司 | Quartz optical fiber and preparation method and device thereof |
| CN113292256A (en) * | 2021-06-18 | 2021-08-24 | 江苏华能电缆股份有限公司 | High-temperature-resistant and hydrogen-loss-resistant polyimide coating process for surface of optical fiber |
| CN113292256B (en) * | 2021-06-18 | 2024-01-09 | 江苏华能电缆股份有限公司 | Polyimide coating process for resisting high temperature and hydrogen loss on surface of optical fiber |
| CN113946012A (en) * | 2021-11-02 | 2022-01-18 | 长飞光纤光缆股份有限公司 | Bending-resistant optical fiber and preparation method thereof |
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Application publication date: 20180727 |