CN102981226A - Optical fiber - Google Patents
Optical fiber Download PDFInfo
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- CN102981226A CN102981226A CN2012104810418A CN201210481041A CN102981226A CN 102981226 A CN102981226 A CN 102981226A CN 2012104810418 A CN2012104810418 A CN 2012104810418A CN 201210481041 A CN201210481041 A CN 201210481041A CN 102981226 A CN102981226 A CN 102981226A
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- optical fiber
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- teflon sleeve
- teflon
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Abstract
The invention discloses an optical fiber. The scheme is that the optical fiber comprises a fiber core, wherein the fiber core is provided with at least two wrapping layers wrapped on the periphery of the fiber core. The two wrapping layers are respectively are a soft layer and a hard layer. The outer layer structure of the fiber core is a Teflon sleeve structure with the diameter to be 0.9, and the soft layer and the hard layer are sequentially wrapped on the periphery of the Teflon sleeve structure with the diameter to be 0.9. The soft layer is made of Kevlar materials, and the hard layer is made of Teflon materials. The optical fiber has the advantages that the traditional silica gel sheath are replaced by the Teflon sleeve; abrasion resistant, high temperature resistant and tension resistant effects of the optical fiber are improved by aid of the characteristics of the Teflon sleeve; and the use range of the normal optical fibers in the special fields is enlarged. Simultaneously, communication and transmission loss of the optical fiber are not affected. The optical fiber is simple in structure, easy to assemble, simple in construction steps and low in cost.
Description
Technical field
The invention belongs to the optical fiber technology field, be specifically related to a kind of bending loss etc. of in hot environment, can not increasing and transmit loss and optical fiber wear-resistant, high temperature resistant, anti-tension.
Background technology
Ordinary optic fibre generally has structure as shown in Figure 1.Optical fiber comprise the glass fibre made by silicon dioxide and be coated on the glass fibre periphery by the resin-coated clad of making.The effect of described clad is to prevent that fiber strength from descending.Usually with ultraviolet curing resin, particularly carbamate-acrylic ester type or epoxy-acrylate type resin are used as optical fiber with resin-coated.Optical fiber increases transmission loss owing to external carbuncle and the microbend that caused by this external carbuncle, avoids this external carbuncle impact in order to protect optical fiber, usually utilizes two material layers (soft layer and hard layer) that optical fiber is coated.For the internal layer that directly contacts with silica glass, will have the barras of low Young modulus as cushion (hereinafter referred to as primary layer); And for skin, will have the animi resin of high Young's modulus as protective seam (hereinafter referred to as secondary layer).Usually, with Young modulus be resin below the 3MPa as primary layer, and be that resin more than the 500MPa is as secondary layer with Young modulus.
This optical fiber is made by the following method.At first, by in fiber drawing furnace, precast body being heated, by silica glass precast body drawn glass fiber.Then aqueous ultraviolet curing resin is coated on the silicon dioxide fibre of drawing via coating die and uses ultraviolet light polymerization.The method that forms primary layer and secondary layer has two kinds, and a kind of is that primary layer and secondary layer are coated with simultaneously, then both is solidified simultaneously; Another kind is after coating and solidifying primary layer, is coated with and solidifies secondary layer.
In recent years along with optical fiber popularize and the application quantity of fiber optic cables increases, the applied environment of fiber optic cables is also more diversified, and the long-term reliability of fiber optic cables is required also to become stricter.Aforesaid situation when optical fiber is immersed in the water for a long time, considers how to increase as few as possible transmission loss.For example, Japanese kokai publication hei 9-5587 communique discloses a kind of optical fiber, and it is owing to the reinforcement between primary layer and the glass fibre adheres to, even can not increase transmission loss when optical fiber is immersed in the water also for a long time.
Known, when being exposed to high humidity environment or being immersed in the water, can increase in the optical fiber of transmission loss, can observe in the contact bed between clad and glass fibre and peel off.When the power that applies in order to peel off clad in the interface between glass fibre and clad during greater than the Interface Adhesion power between glass fibre and the clad, peeling off between clad and the glass fibre occurs.When peeling off at the interface between glass fibre and clad, the power that is applied to glass fibre becomes inhomogeneous.The inhomogeneous microbend that causes of power, optical fiber increases transmission loss as a result.
When being immersed in the water, optical fiber causes that the mechanism that the adhesion between glass fibre and the clad reduces is presumed as follows.When optical fiber being immersed in the water or being exposed to high humidity environment, moisture see through clad and arrive glass fibre and clad between the interface.Adhesion is present between glass fibre and the clad at the interface, and the chemical bond that generally comprises the hydrogen bond between the functional group in glass fibre and the resin and be derived from adhesion promoter is (referring to for example, the people such as N.Akasaka, " design of optical fibre packages coating (Design of Optical Fiber Coating) ", the 19th Australian optical fiber technology meeting proceedings (Proc.of 19th Australian Conference on Optical Fibre Technology) (ALOFT), the 375th page, 1994).
Yet, it is reported that when the interface between water infiltration glass fibre and the clad, hydrogen bond disconnects.As mentioned above, by inference, the adhesion at the interface between glass fibre and clad reduces because hydrogen bond disconnects, and the less optical fiber that may increase transmission loss when various being immersed in the water is provided.Yet as shown in Japanese kokai publication hei 9-5587 communique, the known method that the adhesiveness by each contact bed of balance suppresses transmission loss and increases has limitation, and these methods also can't provide enough reliabilities.
Therefore, be necessary to provide a kind of optical fiber, when optical fiber is exposed in the hot environment, can establishment owing to environment or the year in year out deteriorated transmission loss that causes increase.
Summary of the invention
In order to solve problems of the prior art, the invention provides a kind of optical fiber, in hot environment, can not increase bending loss etc. and transmit loss, and effectively realize the effect of wear-resistant, the high temperature resistant and anti-tension of optical fiber.
In order to achieve the above object, the present invention adopts following technical scheme: a kind of optical fiber, comprise fibre core, and described fibre core has at least two clads that are coated on its periphery, and described clad comprises soft layer and hard layer.
The layer structure of described fibre core itself is the Teflon sleeve structure of φ 0.9, and it is two-layer that the periphery of the Teflon sleeve structure of described φ 0.9 coats successively is respectively soft layer and hard layer.
Described soft layer adopts Kev to draw material.Described Kev material draws the periphery of the Teflon sleeve structure of filling the described φ 0.9 that is laid in, and fibre core is closely wrapped up.
Described Kev draws as a kind of new material, has that density is low, intensity is high, a good toughness, resistant to elevated temperatures characteristic.
The φ 2.0 Teflon sleeve pipes of described hard layer for adopting the Teflon material to make.Described φ 2.0 Teflon sleeve pipes are nested in the periphery that Kev draws.
The characteristics such as that the Teflon sleeve pipe of described φ 2.0 has is high temperature resistant, corrosion-resistant, high insulation, physical strength are good, it is high temperature resistant to reach 260 ℃.
The Teflon sleeve pipe of described φ 2.0, its material characteristic is as follows:
Resistant of high or low temperature---it is little changed by the impact of temperature, and the temperature range scope is wide, but serviceability temperature-190～260 ℃.
Mar proof---under high capacity, have good anti-wear performance.Under certain load, possesses wear-resistant and inadhesive two-fold advantage.
Corrosion-resistant---to most of chemicalss and solvent, show inertia, energy strong alkali-acid resistance, water and various organic agent.
High lubricated---be friction factor the lowest in the solid material.
Do not adhere to---be surface tension minimum in the solid material, do not adhere to any material.
Nonhazardous---have the physiology inertia, implanting for a long time as artificial blood vessel and internal organs has no adverse reaction.
Insulativity---be not subjected to the impact of environment and frequency, volume resistance can reach 1018 ohmcms, and dielectric loss is little, and voltage breakdown is high.
Resistance to weathering, radiation-resistant property and lower perviousness---long term exposure is in atmosphere, and surface and property retention are constant.
The optical fiber of the Teflon sleeve structure of the described φ of having 0.9 and the Teflon sleeve pipe of φ 2.0 can use in 150 ℃ of short-terms, long-term 120 ℃ working temperature situation, and does not increase bending loss etc. and transmit loss.
The present invention compared with prior art beneficial effect is embodied in: traditional silica gel sheath is replaced with the Teflon sleeve pipe, utilize the characteristic of Teflon sleeve pipe to strengthen the effect of wear-resistant, the high temperature resistant and anti-tension of optical fiber, enlarged the usable range of ordinary optic fibre at special dimension.Simultaneously, do not affect communication and the loss of optical fiber itself.This invention is simple in structure, easily assembling, and construction procedure is simple, has reduced input cost.
Description of drawings
Fig. 1 is ordinary optic fibre structure cross sectional representation.
Fig. 2 is optical fiber structure cross sectional representation of the present invention.
Embodiment
Describe specific implementation process of the present invention in detail below in conjunction with accompanying drawing.
Embodiment one: as shown in Figure 2, a kind of optical fiber, comprise fibre core, described fibre core has at least two layers that are coated on its periphery, the layer structure of described fibre core itself is the Teflon sleeve structure of φ 0.9, and it is two-layer that the periphery of the Teflon sleeve structure of described φ 0.9 coats successively is respectively that Kev draws the Teflon sleeve pipe with φ 2.0.
Described Kev draws the periphery of the Teflon sleeve structure of filling the described φ 0.9 that is laid in, and fibre core is closely wrapped up.
Described Kev draws as a kind of new material, has that density is low, intensity is high, a good toughness, resistant to elevated temperatures characteristic.
The Teflon sleeve pipe of described φ 2.0 is nested in the periphery that described Kev draws, and makes fibre core and φ 2.0 Teflon sleeve pipes centre be full of Kev and draws, and has strengthened the mar proof of optical fiber and the function of using in hot environment.
The characteristics such as that the Teflon sleeve pipe of described φ 2.0 has is high temperature resistant, corrosion-resistant, high insulation, physical strength are good, it is high temperature resistant to reach 260 ℃.
Here description of the invention and application is illustrative, is not to want with scope restriction of the present invention in the above-described embodiments.Here the distortion of disclosed embodiment and change is possible, and the various parts of the replacement of embodiment and equivalence are known for those those of ordinary skill in the art.Those skilled in the art are noted that in the situation that does not break away from spirit of the present invention or essential characteristic, and the present invention can be with other form, structure, layout, ratio, and realize with other assembly, material and parts.In the situation that does not break away from the scope of the invention and spirit, can carry out other distortion and change to disclosed embodiment here.
Claims (4)
1. an optical fiber comprises fibre core, it is characterized in that: described fibre core has at least two clads that are coated on its periphery, and described clad comprises soft layer and hard layer.
2. a kind of optical fiber according to claim 1, it is characterized in that: the layer structure of described fibre core itself is the Teflon sleeve structure of φ 0.9, and the periphery of the Teflon sleeve structure of described φ 0.9 coats soft layer and hard layer successively.
3. a kind of optical fiber according to claim 1 and 2 is characterized in that: described soft layer adopts Kev to draw material.
4. a kind of optical fiber according to claim 1 and 2 is characterized in that: described hard layer employing Teflon material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104810418A CN102981226A (en) | 2012-11-23 | 2012-11-23 | Optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104810418A CN102981226A (en) | 2012-11-23 | 2012-11-23 | Optical fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102981226A true CN102981226A (en) | 2013-03-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104810418A Pending CN102981226A (en) | 2012-11-23 | 2012-11-23 | Optical fiber |
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| Country | Link |
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| CN (1) | CN102981226A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103293621A (en) * | 2013-06-25 | 2013-09-11 | 南京烽火藤仓光通信有限公司 | Tight-buffered optical fiber and manufacture method thereof |
| CN103645141A (en) * | 2013-11-16 | 2014-03-19 | 中山欧麦克仪器设备有限公司 | Optical fiber pH meter |
| CN106468599A (en) * | 2016-07-19 | 2017-03-01 | 国网电力科学研究院武汉南瑞有限责任公司 | Oil-immersed type transformer fiber optic temperature measuring probe fixing device |
| JP2017187761A (en) * | 2016-03-31 | 2017-10-12 | オーエフエス ファイテル，エルエルシー | Tight-buffered optical fiber with improved fiber access |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010009993A (en) * | 1999-07-15 | 2001-02-05 | 윤종용 | Outside optical fiber cable |
| CN201780399U (en) * | 2010-09-03 | 2011-03-30 | 宁波汉迪传感技术有限公司 | Optical cable |
| CN102246077A (en) * | 2008-10-06 | 2011-11-16 | 加尔文·H·伍斯兰 | Communications cable and method of making same |
| CN102257420A (en) * | 2009-03-19 | 2011-11-23 | 古河电气工业株式会社 | Optical fiber |
| CN202119954U (en) * | 2011-07-04 | 2012-01-18 | 东捷光电科技(苏州)有限公司 | Disaster resistant optical cable |
-
2012
- 2012-11-23 CN CN2012104810418A patent/CN102981226A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010009993A (en) * | 1999-07-15 | 2001-02-05 | 윤종용 | Outside optical fiber cable |
| CN102246077A (en) * | 2008-10-06 | 2011-11-16 | 加尔文·H·伍斯兰 | Communications cable and method of making same |
| CN102257420A (en) * | 2009-03-19 | 2011-11-23 | 古河电气工业株式会社 | Optical fiber |
| CN201780399U (en) * | 2010-09-03 | 2011-03-30 | 宁波汉迪传感技术有限公司 | Optical cable |
| CN202119954U (en) * | 2011-07-04 | 2012-01-18 | 东捷光电科技(苏州)有限公司 | Disaster resistant optical cable |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103293621A (en) * | 2013-06-25 | 2013-09-11 | 南京烽火藤仓光通信有限公司 | Tight-buffered optical fiber and manufacture method thereof |
| CN103293621B (en) * | 2013-06-25 | 2015-11-18 | 南京华信藤仓光通信有限公司 | A kind of tight tube fiber and preparation method thereof |
| CN103645141A (en) * | 2013-11-16 | 2014-03-19 | 中山欧麦克仪器设备有限公司 | Optical fiber pH meter |
| JP2017187761A (en) * | 2016-03-31 | 2017-10-12 | オーエフエス ファイテル，エルエルシー | Tight-buffered optical fiber with improved fiber access |
| CN106468599A (en) * | 2016-07-19 | 2017-03-01 | 国网电力科学研究院武汉南瑞有限责任公司 | Oil-immersed type transformer fiber optic temperature measuring probe fixing device |
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Application publication date: 20130320 |