CN103941332A - Carbon coated sealing hydrogen-resistant optical fiber - Google Patents
Carbon coated sealing hydrogen-resistant optical fiber Download PDFInfo
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- CN103941332A CN103941332A CN201410190418.3A CN201410190418A CN103941332A CN 103941332 A CN103941332 A CN 103941332A CN 201410190418 A CN201410190418 A CN 201410190418A CN 103941332 A CN103941332 A CN 103941332A
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- optical fiber
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- fiber
- sealing
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Abstract
The invention relates to the technical field of optical fiber manufacturing, in particular to carbon coated sealing hydrogen-resistant optical fiber. The carbon coated sealing hydrogen-resistant optical fiber comprises a fiber core and a cladding at the outside of the fiber core, wherein the fiber core is a glass fiber core, a carbon coated layer is arranged at the outside of the cladding, and a resin coated layer coats the carbon coated layer. Through arranging the amorphous carbon coated layer at the outer layer of glass optical fiber, the carbon coated sealing hydrogen-resistant optical fiber is capable of effectively resisting the hydroxyl invasion, preventing the extension of microcracks in the surface of the optical fiber, and increasing the fatigue life of the optical fiber. The carbon coated sealing hydrogen-resistant optical fiber is capable of guaranteeing the stability of the optical fiber at a 1383 nanometers water peak under the hydrogen-rich environment, expands the application of the optical fiber under the severe environment, and can be used for such special fields as aviation and military industry, oil and gas field and the like.
Description
Technical field
The present invention relates to optic fibre manufacturing technology field, be specifically related to a kind of carbon and apply the anti-hydrogen optical fiber of sealing.
Background technology
Along with the expansion in fiber optic applications field, the fiber optic applications under more particular surroundingss is promoted.Such as oil gas field down-hole application, undersea detection etc.Conventional fiber adopts acryl resin to apply at present, and its Nd value is 25 left and right; Routine need to be carried out deuterium gas disposal, avoids 1383nm wavelength loss along with the infiltration of hydroxyl, to increase in follow-up use procedure.Meanwhile, ordinary optic fibre cannot avoid hydrogen and hydroxyl infiltration macromolecule layer to be combined with glass surface.As time goes on, glass optical fiber crizzle can progressively increase, and fibre tensile strength has obvious decline, and serviceable life is affected by environment large.
Summary of the invention
For the deficiency existing in prior art, the invention provides a kind of hydroxyl invasion that is highly resistant to, prevent that optical fiber surface micro-crack extension, the optical fiber carbon that tensile strength is high, the endurance life-span is long from applying the anti-hydrogen optical fiber of sealing.
To achieve these goals, the present invention realizes by the following technical solutions:
Carbon applies the anti-hydrogen optical fiber of sealing, comprises the covering outside fibre core and fibre core, and the fibre core described in it is glass core, and described covering arranges carbon coat outward, carbon coat outer cladding resin coating layer.
Above-mentioned a kind of carbon applies the anti-hydrogen optical fiber of sealing, and the glass core described in it is single-mode fiber, multimode optical fiber or special optical fiber.
Above-mentioned a kind of carbon applies the anti-hydrogen optical fiber of sealing, and the special optical fiber described in it comprises polarization maintaining optical fibre or rare-earth doped optical fibre.
Above-mentioned a kind of carbon applies the anti-hydrogen optical fiber of sealing, and the resin coating layer described in it is made by acryl resin, silicon rubber, polyimide or polyetheretherketonematerials materials.
Above-mentioned a kind of carbon applies the anti-hydrogen optical fiber of sealing, and the carbon coat described in it adopts CVD chemical vapor deposition method to form.
Above-mentioned a kind of carbon applies the anti-hydrogen optical fiber of sealing, and the coating thickness of the carbon coat described in it is 25～85nm.
Above-mentioned a kind of carbon applies the anti-hydrogen optical fiber of sealing, and the roughness of the carbon coat described in it is less than 5nm.
Beneficial effect:
The present invention, by increased one deck agraphitic carbon coat at glass optical fiber skin, can effectively resist hydroxyl invasion, prevents the expansion of optical fiber surface micro-crack, increases the optical fiber endurance life-span.Can guarantee that optical fiber is under the environment of rich hydrogen, the stability at 1383nm water peak simultaneously.Meanwhile, expand the application of optical fiber under rugged surroundings, can be used for the special dimensions such as space flight military project, oil gas field.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, describe the present invention in detail;
Fig. 1 is structural representation of the present invention.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, below in conjunction with embodiment, further set forth the present invention.
With reference to Fig. 1, the present invention includes the covering 2 outside glass core 1 and fibre core, the outer carbon coat 3 that arranges of covering 2, carbon coat 3 outer cladding resin coating layer 4.Glass core 1 is single-mode fiber, multimode optical fiber, polarization maintaining optical fibre or rare-earth doped optical fibre.Resin coating layer 4 is made by acryl resin, silicon rubber, polyimide or polyetheretherketonematerials materials.Carbon coat 3 adopts CVD chemical vapor deposition method to form, and thickness is 25～85nm, and roughness is less than 5nm.
Its production stage is as follows:
(1) optical wand for wire drawing can be dissimilar optical wand, and its outside dimension scope is 50～150mm.
(2) adopt pyrographite stove to carry out melt drawing, its temperature controlling range is at 1700 ℃～2200 ℃.
(3) optical fiber goes out after fiber drawing furnace, when temperature is 700 ℃ of-1200 ℃ of scopes intervals, through a CVD precipitation equipment.In device, pour alkane, alkene, halogenated alkane or its potpourri, with cracking under oxygen-free environment, at optical fiber surface, generate one deck carbon film.
(4) optical fiber after tested, enter coating die after cooling and apply, solidify.Its drawing speed scope control is at 100～1000m/min.
(5) under different drawing speeds, fiber optic temperature can change, so CVD precipitation equipment position and cracked gas concentration can respective change, guarantees the consistance of carbon coating film thickness.
Embodiment 1
Fiber type is common G.652D single-mode fiber.CVD device is installed on the about 25cm of fiber drawing furnace end opening position, and when drawing speed is 500m/min, measuring fiber temperature is 1100 ℃.CVD device sealing gland gas is argon gas, and flow is 5L/min; Cracked gas is acetylene, helium mix gas, and flow is respectively: 0.6L/min, 2L/min.
Measuring fiber carbon film thickness is 45nm; Optical fiber Nd is 166; Fibre tensile strength is 4.6GPa; After optical fiber high pressure hydrogen loss, 1240nm wavelength added losses are 0.06dB/km.
Embodiment 2
Fiber type is common G.652D single-mode fiber.CVD device is installed on the about 30cm of fiber drawing furnace end opening position, and when drawing speed is 800m/min, measuring fiber temperature is 1130 ℃.CVD device sealing gland gas is argon gas, and flow is 5L/min; Cracked gas is propane, helium mix gas, and flow is respectively: 1.0L/min, 1.8L/min.
Measuring fiber carbon film thickness is 59nm; Optical fiber Nd is 195; Fibre tensile strength is 4.2GPa; After optical fiber high pressure hydrogen loss, 1240nm wavelength added losses are 0.035dB/km.
Embodiment 3
Fiber type is common G.652D single-mode fiber.CVD device is installed on the about 30cm of fiber drawing furnace end opening position, and when drawing speed is 800m/min, measuring fiber temperature is 1130 ℃.CVD device sealing gland gas is argon gas, and flow is 5L/min; Cracked gas is propane, bubbling chloroform, helium mix gas, and flow is respectively: propane 0.5L/min, bubbling helium 0.2L/min; Mix helium 1.8L/min.
Measuring fiber carbon film thickness is 52nm; Optical fiber Nd is 233; Fibre tensile strength is 4.9GPa; After optical fiber high pressure hydrogen loss, 1240nm wavelength added losses are 0.015dB/km.
The present invention, by increased one deck agraphitic carbon coat at glass optical fiber skin, can effectively resist hydroxyl invasion, prevents the expansion of optical fiber surface micro-crack, increases the optical fiber endurance life-span.Can guarantee that optical fiber is under the environment of rich hydrogen, the stability at 1383nm water peak simultaneously.Tensile strength of the present invention is greater than 3.5Gpa; Endurance parameter N d is greater than 100, and representative value is 150-300; In the high pressure hydrogen loss test that is greater than 10bar, 1240nm wavelength added losses are less than 0.2dB/km.Meanwhile, expand the application of optical fiber under rugged surroundings, can be used for the special dimensions such as space flight military project, oil gas field.
More than show and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and instructions, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (7)
1. carbon applies the anti-hydrogen optical fiber of sealing, comprises the covering outside fibre core and fibre core, it is characterized in that, described fibre core is glass core, described covering arranges carbon coat outward, carbon coat outer cladding resin coating layer, and the coating thickness of described carbon coat is 25～85nm.
2. a kind of carbon according to claim 1 applies the anti-hydrogen optical fiber of sealing, it is characterized in that, described glass core is single-mode fiber, multimode optical fiber or special optical fiber.
3. a kind of carbon according to claim 2 applies the anti-hydrogen optical fiber of sealing, it is characterized in that, described special optical fiber comprises polarization maintaining optical fibre or rare-earth doped optical fibre.
4. a kind of carbon according to claim 1 applies the anti-hydrogen optical fiber of sealing, it is characterized in that, described resin coating layer is made by acryl resin, silicon rubber, polyimide or polyetheretherketonematerials materials.
5. a kind of carbon according to claim 1 applies the anti-hydrogen optical fiber of sealing, it is characterized in that, described carbon coat adopts CVD chemical vapor deposition method to form.
6. a kind of carbon according to claim 1 applies the anti-hydrogen optical fiber of sealing, it is characterized in that, the roughness of described carbon coat is less than 5nm.
7. according to the carbon described in claim 1-6 any one, apply a preparation technology for the anti-hydrogen optical fiber of sealing, it is characterized in that, its processing step is as follows:
(1) selecting the optical wand of wire drawing, is 50～150mm for its outside dimension scope of optical wand of wire drawing;
(2) adopt pyrographite stove to carry out melt drawing, its temperature controlling range is at 1700 ℃～2200 ℃;
(3) optical fiber goes out after fiber drawing furnace, when temperature is 700 ℃ of-1200 ℃ of scopes intervals, through a CVD precipitation equipment; In device, pour alkane, alkene, halogenated alkane or its potpourri, with cracking under oxygen-free environment, at optical fiber surface, generate one deck carbon film;
(4) optical fiber after tested, enter coating die after cooling and apply, solidify; Wherein, in coating procedure, drawing speed scope control is at 100～1000m/min;
(5) under different drawing speeds, fiber optic temperature can change, so CVD precipitation equipment position and cracked gas concentration can respective change, guarantees the consistance of carbon coating film thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410190418.3A CN103941332A (en) | 2014-05-07 | 2014-05-07 | Carbon coated sealing hydrogen-resistant optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410190418.3A CN103941332A (en) | 2014-05-07 | 2014-05-07 | Carbon coated sealing hydrogen-resistant optical fiber |
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| Publication Number | Publication Date |
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| CN103941332A true CN103941332A (en) | 2014-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410190418.3A Pending CN103941332A (en) | 2014-05-07 | 2014-05-07 | Carbon coated sealing hydrogen-resistant optical fiber |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106477871A (en) * | 2016-10-19 | 2017-03-08 | 宁波三博电子科技有限公司 | A kind of high shielding heat resistant fiber and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5024688A (en) * | 1988-11-30 | 1991-06-18 | Fujikura Ltd. | Method for producing carbon-coated optical fiber |
| US5035484A (en) * | 1988-12-21 | 1991-07-30 | Sumitomo Electric Industries, Ltd. | Method and apparatus for producing coated optical fiber |
| CN1064466A (en) * | 1991-02-14 | 1992-09-16 | 住友电气工业株式会社 | Make the equipment and the method for hermetically coated optical fiber |
| US5354348A (en) * | 1991-05-12 | 1994-10-11 | Mitsubishi Cable Industries, Ltd. | Method for producing silica glass optical fiber with carbon coating |
| CN102741719A (en) * | 2010-01-26 | 2012-10-17 | 康宁股份有限公司 | Optical fiber |
| CN203849453U (en) * | 2014-05-07 | 2014-09-24 | 江苏亨通光纤科技有限公司 | Carbon-coated sealed anti-hydrogen optical fiber |
-
2014
- 2014-05-07 CN CN201410190418.3A patent/CN103941332A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5024688A (en) * | 1988-11-30 | 1991-06-18 | Fujikura Ltd. | Method for producing carbon-coated optical fiber |
| US5035484A (en) * | 1988-12-21 | 1991-07-30 | Sumitomo Electric Industries, Ltd. | Method and apparatus for producing coated optical fiber |
| CN1064466A (en) * | 1991-02-14 | 1992-09-16 | 住友电气工业株式会社 | Make the equipment and the method for hermetically coated optical fiber |
| US5354348A (en) * | 1991-05-12 | 1994-10-11 | Mitsubishi Cable Industries, Ltd. | Method for producing silica glass optical fiber with carbon coating |
| CN102741719A (en) * | 2010-01-26 | 2012-10-17 | 康宁股份有限公司 | Optical fiber |
| CN203849453U (en) * | 2014-05-07 | 2014-09-24 | 江苏亨通光纤科技有限公司 | Carbon-coated sealed anti-hydrogen optical fiber |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106477871A (en) * | 2016-10-19 | 2017-03-08 | 宁波三博电子科技有限公司 | A kind of high shielding heat resistant fiber and preparation method thereof |
| CN106477871B (en) * | 2016-10-19 | 2019-11-19 | 福州盛世凌云环保科技有限公司 | A kind of high shielding heat resistant fiber and preparation method thereof |
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Application publication date: 20140723 |