CN210181264U - Radiation-resistant optical fiber - Google Patents
Radiation-resistant optical fiber Download PDFInfo
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- CN210181264U CN210181264U CN201920484381.3U CN201920484381U CN210181264U CN 210181264 U CN210181264 U CN 210181264U CN 201920484381 U CN201920484381 U CN 201920484381U CN 210181264 U CN210181264 U CN 210181264U
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- optical fiber
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Abstract
The utility model discloses an irradiation-resistant optical fiber, its structure includes the external coating, buffer coating, undercoating, fibre core and cladding, the fibre core outside is equipped with the cladding, the cladding outside is equipped with the undercoating, the undercoating outside is equipped with buffer coating, the buffer coating outside is equipped with the external coating. The optical fiber is coated on the optical fiber for multiple times through multiple coating materials to form the optical fiber with an inner, middle and outer three-layer coating structure, the buffer layer is made of high-temperature-resistant modified silicon-containing or fluorine-containing acrylic resin, the buffer layer can play a role in buffer protection after the optical fiber is stressed, and the optical fiber has a good isolation effect when being subjected to irradiation and high temperature, so that the inner coating is prevented from being damaged, the optical fiber coating is protected, and the optical transmission performance of the optical fiber is ensured.
Description
Technical Field
The utility model belongs to the technical field of the optic fibre and specifically relates to an irradiation resistant optic fibre.
Background
Optical fibers have the advantages of high bandwidth, electromagnetic interference resistance, light weight, and easy wiring, and have gradually become key transmission media and devices constituting high-speed communication networks and sensing system networks. Since 2011 nuclear accidents in fukushima, people pay close attention to nuclear energy safety, especially to information communication in and around nuclear power plants; due to the fact that a large number of rays exist in the inner portion and the peripheral area of the containment vessel of the nuclear power plant, loss of common communication optical fibers is increased, communication is not smooth, and even communication is interrupted. Therefore, for the reasons mentioned above, it is very important to develop a radiation-resistant optical fiber.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an irradiation resistant optic fibre mainly solves the problem that current communication optic fibre does not have irradiation resistance and temperature resistance ability. The optical fiber can play a role in buffer protection after the optical fiber is stressed, and has a good isolation effect when being subjected to irradiation and high temperature, so that the inner coating is prevented from being damaged, the optical fiber cladding is protected, and the optical transmission performance of the optical fiber is ensured.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides an irradiation-resistant optical fiber, its structure includes external coating, buffer coating, undercoating, fibre core and cladding, the fibre core outside is equipped with the cladding, the cladding outside is equipped with the undercoating, the undercoating outside is equipped with buffer coating, the buffer coating outside is equipped with the external coating.
Furthermore, the fiber core of the optical fiber is low-hydroxyl high-purity silica quartz glass.
Further, the optical fiber cladding is quartz glass highly doped with fluorine.
Further, the optical fiber outer coating is coated by polyimide, the optical fiber buffer layer is coated by modified acrylic resin containing silicon or fluorine, and the inner coating is coated by common acrylic resin for communication.
The utility model has the advantages that:
the utility model discloses an optic fibre carries out a lot of coatings to optic fibre through multiple coating material, forms the optic fibre of inside, in, outer three-layer coating structure, and the buffer layer adopts the modified siliceous or fluorine-containing acrylic resin of high temperature resistance, not only can play the effect of buffer protection after the optic fibre atress, when receiving the effect of irradiation, high temperature moreover, optic fibre has fine isolation, avoids the destruction to the inner coating, protects the optic fibre covering, guarantees the light transmission performance of optic fibre.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
in the figure:
1 outer coating, 2 buffer coating, 3 inner coating, 4 core, 5 cladding
Detailed Description
The following detailed description of an irradiation-resistant optical fiber according to the present invention is made with reference to the accompanying drawings.
As shown in fig. 1, the utility model discloses an irradiation-resistant optical fiber, its structure includes external coating 1, buffer coating 2, undercoating 3, fibre core 4 and covering 5, 4 outsides of fibre core are equipped with covering 5, 5 outsides of covering are equipped with undercoating 3, the 3 outsides of undercoating are equipped with buffer coating 2, buffer coating 2 outsides are equipped with external coating 1, and the fibre external coating adopts the polyimide resin, can improve irradiation-resistant performance, the heat resistance of optic fibre.
A buffer coating 2 is arranged between the outer coating 1 and the inner coating 3, and modified acrylic resin containing silicon or fluorine is used as a buffer coating of the second coating, so that the heat-insulating property and the mechanical property of the optical fiber are improved.
The fiber core 4 is low-hydroxyl high-purity silica quartz glass. The optical fiber cladding 5 is quartz glass highly doped with fluorine. The low-hydroxyl high-purity silica quartz glass is used as the fiber core of the optical fiber, and the quartz glass highly doped with fluorine is used as the fiber cladding, so that the optical fiber has good gamma-ray, X-ray and other ray irradiation resistance.
The optical fiber outer coating is coated by polyimide, the optical fiber buffer layer is coated by modified acrylic resin containing silicon or fluorine, and the inner coating is coated by common acrylic resin for communication.
The optical fiber buffer layer 2 is made of high-temperature-resistant modified silicon-containing or fluorine-containing acrylic resin, so that the buffer protection effect can be achieved after the optical fiber is stressed, and when the optical fiber is subjected to the irradiation and high temperature, the optical fiber has a good ray and high-temperature isolation effect, the damage to an inner coating is avoided, the optical fiber cladding is protected, and the transmission performance of the optical fiber is guaranteed.
The optical fiber is designed by special waveguide, namely low-hydroxyl high-purity silica glass is adopted as an optical fiber core, and highly fluorine-doped quartz glass is adopted as an optical fiber cladding; the optical fiber is coated for many times by various coating materials to form the optical fiber with an inner-middle-outer 3 coating structure, namely, the bare optical fiber is coated by low-modulus common acrylic resin as an inner coating, a middle buffer layer is made of modified high-temperature acrylic resin, and the outermost layer is coated by polyimide resin.
Firstly, (1) heating the optical fiber preform to 1500-2500 ℃ through a high-temperature graphite furnace for melting, and preferably heating the optical fiber preform to 2000 ℃ through the high-temperature graphite furnace for melting. Drawing into bare optical fiber of 125 mu m +/-2 mu m by gravity and traction drawing, wherein the drawing speed is 5-40 m/min.
(2) The bare optical fiber is naturally cooled, firstly, acrylic resin with the thickness of 25 mu m is coated outside the optical fiber for the first time, and the coating is finished by ultraviolet light curing, and the outer diameter of the coating after primary coating is 175 mu m +/-5 mu m.
(3) The second coating is coated by adopting modified high-temperature acrylic resin paint, the thickness of the coating layer is 20 mu m, and the outer diameter of the coated buffer layer is 215 mu m +/-5 mu m.
(4) The outermost layer was coated with a polyimide resin, an outer coating layer 15 μm thick was applied, and heat cured in a resistance furnace, two coating-heat curing cycles were performed to achieve the optimum coating thickness, the outer diameter of the outer coating layer being 245 μm + -5 μm.
(5) And after the optical fiber is finally coated, winding the finished optical fiber on an optical fiber take-up reel, wherein the production length can be set according to the requirements of customers.
The utility model discloses an optic fibre carries out a lot of coatings to optic fibre through multiple coating material, forms the optic fibre of inside, in, outer three-layer coating structure, and the buffer layer adopts the modified siliceous or fluorine-containing acrylic resin of high temperature resistance, not only can play the effect of buffer protection after the optic fibre atress, when receiving the effect of irradiation, high temperature moreover, optic fibre has fine isolation, avoids the destruction to the inner coating, protects the optic fibre covering, guarantees the light transmission performance of optic fibre.
The foregoing is merely illustrative of some of the principles of the present invention and the description is not intended to limit the invention to the specific constructions and applications shown, so that all modifications and equivalents that may be utilized are within the scope of the invention.
Other technical features than those described in the specification are known to those skilled in the art.
Claims (3)
1. The irradiation-resistant optical fiber is characterized by comprising an outer coating, a buffer coating, an inner coating, a fiber core and a cladding, wherein the cladding is arranged outside the fiber core, the inner coating is arranged outside the cladding, the buffer coating is arranged outside the inner coating, and the outer coating is arranged outside the buffer coating; the optical fiber outer coating is coated by polyimide, the optical fiber buffer coating is coated by modified acrylic resin containing silicon or fluorine, and the optical fiber inner coating is coated by common acrylic resin for communication.
2. The radiation-resistant optical fiber of claim 1 wherein the core of said fiber is low-hydroxyl high-purity silica glass.
3. The radiation-resistant optical fiber of claim 1 wherein said fiber cladding is highly fluorine-doped silica glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920484381.3U CN210181264U (en) | 2019-04-11 | 2019-04-11 | Radiation-resistant optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920484381.3U CN210181264U (en) | 2019-04-11 | 2019-04-11 | Radiation-resistant optical fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210181264U true CN210181264U (en) | 2020-03-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920484381.3U Active CN210181264U (en) | 2019-04-11 | 2019-04-11 | Radiation-resistant optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210181264U (en) |
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2019
- 2019-04-11 CN CN201920484381.3U patent/CN210181264U/en active Active
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Effective date of registration: 20230613 Granted publication date: 20200324 |