CN203350478U - High temperature resistant fiber - Google Patents
High temperature resistant fiber Download PDFInfo
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- CN203350478U CN203350478U CN 201320221901 CN201320221901U CN203350478U CN 203350478 U CN203350478 U CN 203350478U CN 201320221901 CN201320221901 CN 201320221901 CN 201320221901 U CN201320221901 U CN 201320221901U CN 203350478 U CN203350478 U CN 203350478U
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- fiber
- temperature resistant
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- high temperature
- optical fiber
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Abstract
The utility model discloses a high temperature resistant fiber comprising a glass fiber core, a cladding wrapping the outside of the glass fiber core, and an acrylic resin coating on the cladding. The glass fiber core employs single mode fiber, multi-mode fiber, polarization maintaining fiber, rare earth doped fiber or large numerical pore diameter fiber. The high temperature resistant fiber has a screening intensity of 100kpsi or 200kpsi, the Nd typical value is larger than 20, a commercial segment length of over 60km can be provided, and the fiber is applicable to long distance and long span. One-time single-layer coating is performed by the adoption of acrylic resin, and the manufacturing process of fiber coating is simplified. Besides, the homogeneity of single-coating materials can guarantee the stability of the high temperature resistant performance of the fiber at an environmental temperature of 150 degrees, and the fiber can be used in harsh environment in a long term and can be used in a short term at a temperature of 200 degrees.
Description
Technical field
The utility model relates to a kind of optical fiber, is 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 meet the reliability under 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 manufactures, meet the usability under different temperatures.
Chinese patent CN101726792A; CN102360096A etc. have announced and have used high-temperature resistant optical fiber and the job operation thereof of polyimide as 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, be suitable for the long-term use at 150 ℃ of temperature.
The utility model content
The deficiency existed for prior art, the utility model purpose is to provide a kind of under 150 ℃ of environment temperatures, the high-temperature resistant optical fiber that still has high stability.
To achieve these goals, the utility model is to realize by the following technical solutions:
The utility model comprises glass core, is wrapped in the covering of glass core periphery and is coated in the acryl resin coating on 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 utility model has the proof strength of 100kpsi or 200kpsi, and the Nd representative value is greater than 20, and can provide over the commercial segment length more than 60km, is applicable at a distance the long span application.The utility model 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, guaranteed under 150 ℃ of environment temperatures the stability of optical fiber heat resistance, can in rugged surroundings, use for a long time, under 200 ℃ of environment, short-term is used.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with embodiment, further set forth utility model of the present invention.
Embodiment 1:
Referring to Fig. 1, high-temperature resistant optical fiber of the present utility model comprises glass core 1, is wrapped in the covering 2 of glass core 1 periphery and is coated in the acryl resin coating 3 on covering 2.
Acryl resin coating 3 is individual layer.Acryl resin coating 3 adopts ultraviolet light polymerization, and acryl resin coating 3 Young moduluss after solidifying are 0.6～1GPa, and refractive index is 1.4～1.6.
The manufacturing process of the utility model high-temperature resistant optical fiber comprises following step,
(1) adopt graphite furnace to carry out melting wire drawing to optical wand, wherein, heating-up temperature is 1700～2200 ℃; Wherein, for the optical wand of wire drawing, can be dissimilar optical wand, its outside dimension scope is 45～200mm, the speed of wire drawing is 200～1500m/min.
(2) annealed coolingly after melt drawing, then enter the single layer coating mould and carry out primary coating acryl resin coating 3, obtained optical fiber.Coating is controlled from storage tank and is injected mould by air pressure.The optical fiber of different coating thickness, corresponding different coating outlet mold sizes, to guarantee to apply the accurate of size.
(3) optical fiber that will apply acryl resin coating 3 adopts ultraviolet light to be cured;
(4) adopt auto take-up that optical fiber is around in to fiber reel, complete the manufacture 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.The polarization maintaining optical fibre optical wand that diameter is 45mm melting in the pyrographite stove of 2100 ℃, wire drawing; Under the drawing speed of 200～300m/min, enter the single layer coating mould, apply high temperature resistant acrylic materials, by 6 groups of UV lamps, be cured.This optical fiber mode field diameter under 1310 wavelength is 6um, and decay is less than 0.6dB/km; Covering 2 diameters of glass are 80um; It is 160um that acryl resin applies diameter, and monolateral coating thickness is 40um.
Embodiment 2:
In embodiment 1, fiber type is high temperature resistant G.652D single-mode fiber.The single-mode fiber optical wand that diameter is 180mm or 200mm melting in the high temperature induction graphite furnace of 2200 ℃, under the drawing speed of 1000～1500m/min, enter 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; Covering 2 diameters of glass are 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 weight-loss ratio under 150 ℃ of conditions is 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:
In embodiment 1, fiber type is high temperature resistant large core diameter energy-transmission optic fibre.The optical wand that diameter is 60mm melting in the pyrographite stove of 2100 ℃, wire drawing, its glass sandwich layer diameter is 200um; Covering 2 diameters of glass are 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; Be less than 12dB/km in 850nm wavelength attenuation.
Case study on implementation 4:
In embodiment 1, fiber type is high temperature resistant large core diameter energy-transmission optic fibre.The optical wand that diameter is 60mm melting in the pyrographite stove of 2100 ℃, wire drawing, its glass sandwich layer diameter is 600um; Covering 2 diameters of glass are 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; Be less than 12dB/km in 850nm wavelength attenuation.
Above demonstration and described ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and instructions, describes just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. a high-temperature resistant optical fiber, is characterized in that, comprises glass core (1), be wrapped in the peripheral covering (2) of glass core (1) and be coated in the acryl resin coating (3) on covering (2).
2. high-temperature resistant optical fiber according to claim 1, is characterized in that, described acryl resin coating (3) is individual layer.
3. high-temperature resistant optical fiber according to claim 1, is characterized in that, the thickness of described acryl resin coating (3) is 20～40um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320221901 CN203350478U (en) | 2013-04-27 | 2013-04-27 | High temperature resistant fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320221901 CN203350478U (en) | 2013-04-27 | 2013-04-27 | High temperature resistant fiber |
Publications (1)
| Publication Number | Publication Date |
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| CN203350478U true CN203350478U (en) | 2013-12-18 |
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| CN 201320221901 Expired - Fee Related CN203350478U (en) | 2013-04-27 | 2013-04-27 | High temperature resistant fiber |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103323906A (en) * | 2013-04-27 | 2013-09-25 | 江苏亨通光纤科技有限公司 | High-temperature-resisting optical fiber |
| US10823624B2 (en) * | 2017-07-03 | 2020-11-03 | Yangtze Optical Fibre And Cable Joint Stock Limited Company | Multimode optical fiber, application thereof and temperature-measuring system |
-
2013
- 2013-04-27 CN CN 201320221901 patent/CN203350478U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103323906A (en) * | 2013-04-27 | 2013-09-25 | 江苏亨通光纤科技有限公司 | High-temperature-resisting optical fiber |
| US10823624B2 (en) * | 2017-07-03 | 2020-11-03 | Yangtze Optical Fibre And Cable Joint Stock Limited Company | Multimode optical fiber, application thereof and temperature-measuring system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: JIANGSU HENGTONG PHOTOELECTRIC CO., LTD. Effective date: 20140418 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140418 Address after: 215200, No. 100, Heng Tong Road, Wujiang District, Jiangsu, Suzhou Patentee after: Hengtong Optical Fibre Science and Technology Co., Ltd., Jiangsu Address before: 215200 No. 100, Heng Tong Road, Wujiang economic and Technological Development Zone, Suzhou, Jiangsu Patentee before: Hengtong Optical Fibre Science and Technology Co., Ltd., Jiangsu Patentee before: Jiangsu Hengtong Photoelectric Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131218 Termination date: 20170427 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |