CN215375845U - Gold-plated optical fiber - Google Patents
Gold-plated optical fiber Download PDFInfo
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- CN215375845U CN215375845U CN202021713968.6U CN202021713968U CN215375845U CN 215375845 U CN215375845 U CN 215375845U CN 202021713968 U CN202021713968 U CN 202021713968U CN 215375845 U CN215375845 U CN 215375845U
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Abstract
The utility model relates to the technical field of optical fibers, in particular to a gold-plated optical fiber, which comprises: the optical fiber core layer, the optical fiber cladding layer, the buffer layer and the metal coating layer; the optical fiber core layer is configured as a medium for light transmission, and the optical fiber cladding layer is arranged on the outer side of the optical fiber core layer and used for limiting light to be transmitted in the optical fiber core layer; the buffer layer is tightly combined at the outer side of the optical fiber cladding and is used for bonding the optical fiber cladding and the metal coating layer; the metal coating layer is tightly combined on the outer side of the buffer layer and used for protecting the internal structure of the optical fiber. According to the gold-plated optical fiber provided by the utility model, the buffer layer can be used for bonding the optical fiber cladding and the metal coating layer, and the buffer layer can be used for diffusing metal materials, so that the metal coating layer gold is firmly attached to the buffer layer. According to the gold-plated optical fiber provided by the utility model, the structure of the buffer layer and the metal coating layer is adopted to replace the traditional double-layer metal coating structure, the buffer layer and the surface of the optical fiber cladding layer can not form a large gap, the flatness and stability of the optical fiber are improved, and the internal structure of the optical fiber can be protected compactly.
Description
Technical Field
The utility model relates to the technical field of optical fibers, in particular to a gold-plated optical fiber.
Background
With the expansion of the application environment of the optical fiber, the common optical fiber cannot adapt to the use condition of a special environment, particularly under a high-temperature corrosion working environment, the common ultraviolet curing coating is easy to be subjected to thermal aging and thermal-oxidative aging, the protection effect of the coating on the optical fiber is reduced, and finally the optical fiber can be caused to fail. In order to cope with this situation, optical fiber manufacturers at home and abroad have developed high temperature resistant optical fibers.
The existing common high-temperature resistant optical fiber has the following defects and shortcomings: first, the international mainstream high temperature resistant optical fiber mainly includes: the high temperature resistant acrylic resin coated optical fiber, the organic silica gel coated optical fiber, the polyimide coated optical fiber and the metal coated optical fiber. By means of different characteristics in manufacturing process and performance, the high-temperature resistant optical fibers are already used in the fields of oil and gas well detection, aerospace military industry, optical fiber energy transmission and the like. However, in practical use, the stability and the long-term property of the four materials are not guaranteed, and the transmission of optical signals is greatly influenced. Secondly, in the existing four kinds of coated optical fibers, due to the difference and limitation of the manufacturing level, the optical fibers are easy to be subjected to thermal aging, thermal-oxygen aging and hydrogen loss under the environment of 200 ℃ and the optical loss is gradually increased, and finally the optical fibers can be failed along with the time. And because the temperature environment fluctuation is large, in the environment of 400 ℃, only the gold-plated optical fibers of the four materials meet the requirement of the environment with the ultra-high temperature (400 ℃ to 800 ℃), and the method has a very large application prospect.
The gold-plated coated optical fiber has the advantages that the thermal expansion coefficient of the metal coating layer is low and is basically in the same order of magnitude as that of the optical fiber; the corrosion resistance and the stress resistance of the metal coating layer are optimal; the low temperature resistance is good, and the continuous operation can be carried out at the temperature of 269 ℃ below zero; the metal coating layer is tightly combined with the optical fiber coating layer, and the mechanical strength is high; the fatigue resistance, the water resistance and the hydrogen resistance are good; the metal coating can be welded by metal, so that the continuity and the universality of the optical fiber and other materials are improved.
The prior art discloses a multilayer metal coating high temperature and corrosion resistant optical fiber, and the metal coating protects the optical fiber and enhances the effects of high temperature and corrosion resistance, but still has the following defects: firstly, a multilayer metal protection design is adopted, but an inner metal coating layer is made of macromolecular metal materials, so that a large gap can be formed on the surface of a quartz optical fiber cladding layer, and the flatness and stability of the optical fiber are influenced. Secondly, the design of multilayer metal coating is adopted, the thickness of metal is increased to a certain extent, and in optical signal transmission, the expansion coefficient difference between quartz materials and multilayer metal is too large, so that bending is increased, and self loss is caused. Thirdly, the multilayer metal increases the production cost of the optical fiber and the difficulty of the manufacturing process, which is not favorable for popularization and application.
SUMMERY OF THE UTILITY MODEL
The utility model provides a gold-plated optical fiber aiming at the technical problems of low flatness and stability of the optical fiber, large self-loss of the optical fiber and high production cost in the prior art.
The technical scheme for solving the technical problems is as follows:
a gold-plated optical fiber comprising:
-a core layer of optical fiber configured as a light transmitting medium;
-a fiber cladding disposed outside the fiber core layer for limiting light transmission within the fiber core layer;
-a buffer layer closely coupled to an outer side of the optical fiber cladding for bonding the optical fiber cladding and the metal coating layer;
-a metallic coating layer tightly bonded outside the buffer layer for protecting the optical fiber inner structure.
Furthermore, the outer surface of the optical fiber cladding is provided with a plurality of uniformly distributed micropore structures.
Further, the buffer layer is a nickel plating layer.
Further, the thickness of the nickel plating layer is 0.005 mm-0.010 mm; the thickness of the coating layer is 0.2-1.5 mu m.
Further, the optical fiber core layer is of an annular structure made of homogeneously doped quartz glass or pure quartz glass material.
Further, the optical fiber cladding is an annular structure made of doped quartz glass or pure quartz glass material.
Further, the metal coating layer is an annular structure of a composite material doped with gold or a gold polymer.
Furthermore, the refractive index of the optical fiber core layer is 1.42-1.50, and the diameter of the optical fiber core layer is 0.045 mm-0.115 mm.
Furthermore, the refractive index of the optical fiber cladding is 1.41-1.45, and the diameter of the optical fiber cladding is 0.123-0.126 mm.
The gold-plated optical fiber provided by the utility model at least has the following beneficial effects or advantages:
the gold-plated optical fiber provided by the utility model is provided with an optical fiber core layer, an optical fiber cladding layer, a buffer layer and a metal coating layer; the optical fiber core layer is configured as a medium for light transmission, and the optical fiber cladding layer is arranged on the outer side of the optical fiber core layer and used for limiting light to be transmitted in the optical fiber core layer; the buffer layer is tightly combined at the outer side of the optical fiber cladding and is used for bonding the optical fiber cladding and the metal coating layer; the metal coating layer is tightly combined on the outer side of the buffer layer and used for protecting the internal structure of the optical fiber. According to the gold-plated optical fiber provided by the utility model, the buffer layer can be used for bonding the optical fiber cladding and the metal coating layer, and the buffer layer can be used for diffusing metal materials, so that the metal coating layer gold is firmly attached to the buffer layer. According to the gold-plated optical fiber provided by the utility model, a structure of the buffer layer and the metal coating layer is adopted to replace a traditional double-layer metal coating structure, the buffer layer and the surface of the optical fiber cladding layer can not form a large gap, the flatness and stability of the optical fiber are improved, and the internal structure of the optical fiber can be protected compactly; the design of the structure of the buffer layer and the metal coating layer is adopted, the thickness of metal is reduced, in optical signal transmission, the difference of expansion coefficients of the optical fiber cladding layer and the buffer layer is small, the bending degree of the optical fiber is reduced, and further the loss of the optical fiber is reduced. Compared with a double-metal-layer structure, the design of the structure of the buffer layer and the metal coating layer is adopted, and the production cost is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a gold-plated optical fiber according to an embodiment of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1-optical fiber core layer, 2-optical fiber cladding layer, 3-buffer layer and 4-metal coating layer.
Detailed Description
The utility model provides a gold-plated optical fiber aiming at the technical problems of low flatness and stability of the optical fiber, large self-loss of the optical fiber and high production cost in the prior art.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an embodiment of the present invention provides a gold-plated optical fiber, including: the optical fiber core layer 1, the optical fiber cladding layer 2, the buffer layer 3 and the metal coating layer 4; wherein:
the optical fiber core layer 1 is configured as a medium for light transmission; the optical fiber core layer 1 is of an annular structure made of a homogeneous doped quartz glass or pure quartz glass material; the refractive index of the optical fiber core layer 1 is 1.42-1.50 (such as 1.42, 1.47 or 1.50), and the diameter of the optical fiber core layer 1 is 0.045 mm-0.115 mm (such as 0.045mm, 0.085mm or 0.115 mm).
The optical fiber cladding 2 is arranged outside the optical fiber core layer 1 and used for limiting light to be transmitted in the optical fiber core layer 1; the optical fiber cladding 2 is an annular structure made of doped quartz glass or pure quartz glass material; the refractive index of the optical fiber cladding 2 is 1.41-1.45 (such as 1.41, 1.43 or 1.45), and the diameter of the optical fiber cladding 2 is 0.123-0.126 mm (such as 0.123mm, 0.125mm or 0.126 mm).
The buffer layer 3 is tightly combined at the outer side of the optical fiber cladding 2 and is used for bonding the optical fiber cladding 2 and the metal coating layer 4; in this embodiment, the buffer layer 3 is a nickel plating layer; the thickness of the nickel-plated layer is 0.005 mm-0.010 mm (such as 0.005mm, 0.007mm or 0.010 mm).
The metal coating layer 4 is tightly combined on the outer side of the buffer layer 3 and used for protecting the internal structure of the optical fiber; the metal coating layer 4 is an annular structure of a composite material doped with gold or a gold polymer; the thickness of the metal coating layer 4 is 0.2-1.5 μm (such as 0.2 μm, 0.8 μm or 1.5 μm).
In a preferred embodiment of the present invention, referring to fig. 1, the outer surface of the optical fiber cladding 2 is provided with a plurality of uniformly distributed micro-porous structures, so that the outer surface of the optical fiber cladding 2 becomes uneven for more closely adhering the nickel plating layer. The buffer layer 3 adopts a special process flow and is divided into two steps: firstly, roughening the optical fiber cladding 2, namely soaking the outer wall of the optical fiber cladding 2 by adopting glass abrasive liquid or solution prepared from hydrogen fluoride, sulfuric acid and other liquid medicines to form a plurality of uniformly distributed micropore structures on the outer surface of the optical fiber cladding 2; after the outer surface of the optical fiber cladding 2 is roughened, the outer surface of the optical fiber cladding 2 is uneven, and various substances can be better adsorbed. And after the optical fiber cladding 2 is subjected to roughening treatment, cleaning the roughened optical fiber cladding 2, and naturally drying the cleaned optical fiber. Secondly, nickel plating is carried out on the basis of coarsening to form a nickel plating layer, the method is chemical plating, and other methods can also be adopted for plating, such as sputtering and the like; the nickel plating layer can be mutually adsorbed with the metal coating layer 4, so that the diffusion of gold is prevented, and the metal coating layer 4 is firmly attached to the optical fiber.
Referring to fig. 1, the gold-plated optical fiber provided by the embodiment of the utility model has at least the following beneficial effects or advantages:
the gold-plated optical fiber provided by the embodiment of the utility model is provided with an optical fiber core layer 1, an optical fiber cladding layer 2, a buffer layer 3 and a metal coating layer 4; the optical fiber core layer 1 is configured as a medium for light transmission, and the optical fiber cladding layer 2 is arranged outside the optical fiber core layer 1 and used for limiting light transmission in the optical fiber core layer 1; the buffer layer 3 is tightly combined at the outer side of the optical fiber cladding 2 and is used for bonding the optical fiber cladding 2 and the metal coating layer 4; the metal coating layer 4 is tightly combined outside the buffer layer 3 for protecting the internal structure of the optical fiber. According to the gold-plated optical fiber provided by the embodiment of the utility model, the buffer layer 3 can be bonded with the optical fiber cladding layer 2 and the metal coating layer 4, and the buffer layer 3 can be diffused by metal materials, so that the metal coating layer 4 is firmly attached to the buffer layer 3. According to the gold-plated optical fiber provided by the embodiment of the utility model, the structure of the buffer layer 3 and the metal coating layer 4 is adopted to replace the traditional double-layer metal coating structure, so that a large gap is not formed between the buffer layer 3 and the surface of the optical fiber cladding layer 2, the flatness and stability of the optical fiber are improved, and the internal structure of the optical fiber can be protected compactly; the design of the structure of the buffer layer 3 and the metal coating layer 4 is adopted, the thickness of metal is reduced, in optical signal transmission, the difference of expansion coefficients of the optical fiber cladding layer 2 and the buffer layer 3 is small, the bending degree of the optical fiber is reduced, and further the loss of the optical fiber is reduced. Compared with a double-metal-layer structure, the design of the structure of the buffer layer 3 and the metal coating layer 4 is adopted, and the production cost is reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. A gold-plated optical fiber, comprising:
-a core layer (1) of optical fiber configured as a transmission medium for light;
-a fiber cladding (2) arranged outside the fiber core layer (1) for limiting the transmission of light within the fiber core layer (1);
-a buffer layer (3) tightly bonded to the outside of the fiber cladding (2) for bonding the fiber cladding (2) and the metal coating layer (4);
-a metallic coating layer (4) tightly bonded outside said buffer layer (3) for protecting the internal structure of the optical fiber;
the outer surface of the optical fiber cladding (2) is provided with a plurality of uniformly distributed micropore structures.
2. The gold-plated optical fiber according to claim 1, wherein the buffer layer (3) is a nickel-plated layer.
3. The gold-plated optical fiber according to claim 2, wherein the thickness of the nickel-plated layer is 0.005mm to 0.010 mm; the thickness of the coating layer is 0.2-1.5 mu m.
4. The gold-plated optical fiber according to any one of claims 1 to 3, wherein the refractive index of the optical fiber core layer (1) is 1.42 to 1.50, and the diameter of the optical fiber core layer (1) is 0.045mm to 0.115 mm.
5. The gold-plated optical fiber according to any one of claims 1 to 3, wherein the refractive index of the fiber cladding (2) is 1.41 to 1.45, and the diameter of the fiber cladding (2) is 0.123mm to 0.126 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021713968.6U CN215375845U (en) | 2020-08-17 | 2020-08-17 | Gold-plated optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021713968.6U CN215375845U (en) | 2020-08-17 | 2020-08-17 | Gold-plated optical fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215375845U true CN215375845U (en) | 2021-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021713968.6U Active CN215375845U (en) | 2020-08-17 | 2020-08-17 | Gold-plated optical fiber |
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|---|---|
| CN (1) | CN215375845U (en) |
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- 2020-08-17 CN CN202021713968.6U patent/CN215375845U/en active Active
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