CN103323906A - High-temperature-resisting optical fiber - Google Patents
High-temperature-resisting optical fiber Download PDFInfo
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- CN103323906A CN103323906A CN2013101516412A CN201310151641A CN103323906A CN 103323906 A CN103323906 A CN 103323906A CN 2013101516412 A CN2013101516412 A CN 2013101516412A CN 201310151641 A CN201310151641 A CN 201310151641A CN 103323906 A CN103323906 A CN 103323906A
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- optical fiber
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- temperature resistant
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Abstract
The invention discloses a high-temperature-resisting optical fiber. The high-temperature-resisting optical fiber comprises a glass fiber core, a cladding and an acrylic resin coating, wherein the cladding wraps the periphery of the glass fiber core, and the acrylic resin coating coats the cladding. The glass fiber core is made of single mode fibers, multimode fibers, polarization maintaining optical fibers, and rare earth doping optical fibers or large numerical aperture optical fibers. The high-temperature-resisting optical fiber has 100kpsi or 200kpsi screening strength, the Nd typical value is greater than 20, a commercial segment length more than 60km can be provided, and the high-temperature-resisting optical fiber is suitable for remote and long span application. One-time single layer coating is carried out on the high-temperature-resisting optical fiber through acrylic resin, and therefore the processes of optical fiber coating are simplified. The stability of temperature-resisting performance of the optical fiber can be guaranteed under the 150 DEG C environment temperature due to the uniformity of the single coating materials, and the high-temperature-resisting optical fiber can be used for a long time in a severe environment and can also be used for a short time in an environment with 200 DEG C.
Description
Technical field
The present invention relates to a kind of optical fiber, be specifically related to a kind of high-temperature resistant optical fiber.
Background technology
Along with the expansion in fiber optic applications field, more application under the particular surroundingss such as high temperature are promoted.Such as the oil gas field down-hole application, high temperature detection, space flight military project etc.Conventional fiber only can guarantee the Long Service Life under environment temperature-60～85 degree at present, can't satisfy the reliability under the higher temperature.
In the design of high temperature optical fiber, generally use high temperature resistant acryl resin, silicon rubber, polyimide, polyetheretherketone etc. as coating material; And adopt different coating processes manufacturings, satisfy the usability under the different temperatures.
Chinese patent CN101726792A; CN102360096A etc. have announced and have used polyimide as high-temperature resistant optical fiber and the job operation thereof of coating.And the high-temperature resistant optical fiber that adopts high temperature resistant acryl resin to apply generally all adopts the double-coating coating process, is suitable for the long-term use under 150 ℃ of temperature.
Summary of the invention
For the deficiency that prior art exists, the object of the invention provides a kind of under 150 ℃ of environment temperatures, the high-temperature resistant optical fiber that still has high stability.
To achieve these goals, the present invention realizes by the following technical solutions:
The present invention includes glass core, be wrapped in the covering of glass core periphery and be coated in acryl resin coating on the covering.
What above-mentioned glass core adopted is single-mode fiber, multimode optical fiber, polarization maintaining optical fibre, rare-earth doped optical fibre or large-numerical aperture optical fiber.
Aforesaid propylene acid resin coating is individual layer.
The thickness of aforesaid propylene acid resin coating is 20～40um.
High-temperature resistant optical fiber of the present invention has the proof strength of 100kpsi or 200kpsi, and the Nd representative value is greater than 20, and can provide above the commercial segment length more than the 60km, is fit at a distance, and long span is used.The present invention adopts acryl resin to carry out disposable single layer coating, has simplified the optical fiber coating manufacturing process, in addition, the homogeneity of single coating material has guaranteed under 150 ℃ of environment temperatures the stability of optical fiber heat resistance, can use for a long time in rugged surroundings, short-term is used under 200 ℃ of environment.
Description of drawings
Fig. 1 is structural representation of the present invention.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with embodiment, further set forth the present invention.
Embodiment 1:
High-temperature resistant optical fiber of the present invention comprises glass core, be wrapped in the covering of glass core periphery and be coated in acryl resin coating on the covering.
The acryl resin coating is individual layer.The acryl resin coating adopts ultraviolet light polymerization, and the acryl resin coating Young modulus after the curing is 0.6～1GPa, and refractive index is 1.4～1.6.
The manufacturing process of high-temperature resistant optical fiber of the present invention comprises following step,
(1) adopt graphite furnace that optical wand is carried out melting and wire drawing, wherein, heating-up temperature is 1700～2200 ℃; Wherein, the optical wand that is used for wire drawing can be dissimilar optical wand, and its outside dimension scope is 45～200mm, and the speed of wire drawing is 200～1500m/min.
(2) then the cooling of annealing behind the melt drawing enters the single layer coating mould and carries out primary coating acryl resin coating, obtains optical fiber.Coating injects mould by air pressure control from storage tank.The optical fiber of different coating thickness, corresponding different coating outlet mold sizes is to guarantee to apply the accurate of size.
The optical fiber that (3) will apply the acryl resin coating adopts ultraviolet light to be cured;
(4) adopt auto take-up that optical fiber is around in fiber reel, namely finish the manufacturing of high-temperature resistant optical fiber.
In the present embodiment, fiber type is the high temperature resistant polarization maintaining optical fibre of a kind of 80um.Diameter is the melting in 2100 ℃ pyrographite stove of polarization maintaining optical fibre optical wand, the wire drawing of 45mm; Under the drawing speed of 200～300m/min, enter the single layer coating mould, apply high temperature resistant acrylic materials, be cured by 6 groups of UV lamps.This optical fiber mode field diameter under 1310 wavelength is 6um, and decay is less than 0.6dB/km; The glass-clad diameter is 80um; It is 160um that acryl resin applies diameter, and monolateral coating thickness is 40um.
Embodiment 2:
Among the embodiment 1, fiber type is high temperature resistant G.652D single-mode fiber.Diameter is single-mode fiber optical wand melting in 2200 ℃ high temperature induction graphite furnace of 180mm or 200mm, under the drawing speed of 1000～1500m/min, enters the single layer coating mould, applies high temperature resistant acryl resin diameter to 200um.This optical fiber mode field diameter under 1310 wavelength is 9.2um, and decay is less than 0.4dB/km; The glass-clad diameter is 125um; It is 200um that acryl resin applies diameter, and monolateral coating thickness is 37.5um.This optical fiber Nd representative value is 22, and the above commercial segment length of 60km can be provided.This optical fiber under 150 ℃ of conditions weight-loss ratio less than 5%; The decay added value is less than 0.2dB/km; Can guarantee that 150 ℃ long-term are used, 200 ℃ of short-terms are used more than 7 days.
Case study on implementation 3:
Among the embodiment 1, fiber type is high temperature resistant large core diameter energy-transmission optic fibre.Diameter is optical wand melting in 2100 ℃ pyrographite stove, the wire drawing of 60mm, and its glass sandwich layer diameter is 200um; The glass-clad diameter is 220um.Under the drawing speed of 10～50m/min, enter coating die, monolateral coating is high temperature resistant, and acryl resin thickness is 40um, finally applying diameter is 300um.This optical fiber is to have larger light receiving area and light-receiving incident angle, and its typical numerical aperture NA is 0.37; In 850nm wavelength attenuation less than 12dB/km.
Case study on implementation 4:
Among the embodiment 1, fiber type is high temperature resistant large core diameter energy-transmission optic fibre.Diameter is optical wand melting in 2100 ℃ pyrographite stove, the wire drawing of 60mm, and its glass sandwich layer diameter is 600um; The glass-clad diameter is 660um.Under the drawing speed of 10～50m/min, enter coating die, monolateral coating is high temperature resistant, and acryl resin thickness is 170um, finally applying diameter is 1000um.This Optical Fiber Numerical Aperture NA is 0.37～0.46; In 850nm wavelength attenuation less than 12dB/km.
Above demonstration 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 describes in above-described embodiment and the instructions 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 (4)
1. a high-temperature resistant optical fiber is characterized in that, comprises glass core, is wrapped in the covering of glass core periphery and is coated in acryl resin coating on the covering.
2. high-temperature resistant optical fiber according to claim 1 is characterized in that, what described glass core adopted is single-mode fiber, multimode optical fiber, polarization maintaining optical fibre, rare-earth doped optical fibre or large-numerical aperture optical fiber.
3. high-temperature resistant optical fiber according to claim 1 is characterized in that, described acryl resin coating is individual layer.
4. high-temperature resistant optical fiber according to claim 1 is characterized in that, the thickness of described acryl resin coating is 20～40um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101516412A CN103323906A (en) | 2013-04-27 | 2013-04-27 | High-temperature-resisting optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101516412A CN103323906A (en) | 2013-04-27 | 2013-04-27 | High-temperature-resisting optical fiber |
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| CN103323906A true CN103323906A (en) | 2013-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013101516412A Pending CN103323906A (en) | 2013-04-27 | 2013-04-27 | High-temperature-resisting optical fiber |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020043042A1 (en) * | 2018-08-31 | 2020-03-05 | 江苏亨通光纤科技有限公司 | High temperature resistant optical fiber and preparation method therefor |
| CN113816599A (en) * | 2021-09-28 | 2021-12-21 | 中天科技光纤有限公司 | Temperature-resistant optical fiber and preparation method thereof |
| CN116915321A (en) * | 2023-09-12 | 2023-10-20 | 威海威信光纤科技有限公司 | Rapid test method and system for optical fiber bus |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1047104A (en) * | 1990-04-17 | 1990-11-21 | 湖北省化学研究所 | Ultraviolet rapid solidified tri compound single layer optical fiber paint |
| CN101849204A (en) * | 2007-08-31 | 2010-09-29 | 滕索利特公司 | Fiber-optic cable and method of manufacture |
| CN102654603A (en) * | 2011-03-01 | 2012-09-05 | 中国电子科技集团公司第二十三研究所 | Realization method of air gap clad optical fiber |
| CN203350478U (en) * | 2013-04-27 | 2013-12-18 | 江苏亨通光纤科技有限公司 | High temperature resistant fiber |
-
2013
- 2013-04-27 CN CN2013101516412A patent/CN103323906A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1047104A (en) * | 1990-04-17 | 1990-11-21 | 湖北省化学研究所 | Ultraviolet rapid solidified tri compound single layer optical fiber paint |
| CN101849204A (en) * | 2007-08-31 | 2010-09-29 | 滕索利特公司 | Fiber-optic cable and method of manufacture |
| CN102654603A (en) * | 2011-03-01 | 2012-09-05 | 中国电子科技集团公司第二十三研究所 | Realization method of air gap clad optical fiber |
| CN203350478U (en) * | 2013-04-27 | 2013-12-18 | 江苏亨通光纤科技有限公司 | High temperature resistant fiber |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020043042A1 (en) * | 2018-08-31 | 2020-03-05 | 江苏亨通光纤科技有限公司 | High temperature resistant optical fiber and preparation method therefor |
| CN113816599A (en) * | 2021-09-28 | 2021-12-21 | 中天科技光纤有限公司 | Temperature-resistant optical fiber and preparation method thereof |
| CN113816599B (en) * | 2021-09-28 | 2023-04-14 | 中天科技光纤有限公司 | Temperature-resistant optical fiber and preparation method thereof |
| CN116915321A (en) * | 2023-09-12 | 2023-10-20 | 威海威信光纤科技有限公司 | Rapid test method and system for optical fiber bus |
| CN116915321B (en) * | 2023-09-12 | 2023-12-01 | 威海威信光纤科技有限公司 | Rapid test method and system for optical fiber bus |
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Application publication date: 20130925 |