CN205176320U - Pressure optic fibre - Google Patents
Pressure optic fibre Download PDFInfo
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- CN205176320U CN205176320U CN201520968294.7U CN201520968294U CN205176320U CN 205176320 U CN205176320 U CN 205176320U CN 201520968294 U CN201520968294 U CN 201520968294U CN 205176320 U CN205176320 U CN 205176320U
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- pressure
- optical fiber
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- fibre
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Abstract
The utility model relates to a pressure optic fibre, pressure optic fibre includes that fibre core and cover locate the peripheral annular coat of fibre core, the internal diameter of coat is greater than the diameter of fibre core to form the air bed between fibre core and coat, both ends are equipped with the covering that is used for sealing the air bed respectively around the pressure optic fibre. This pressure optic fibre is favorable to improving temperature measurement under the prerequisite of suitable temperature measurement distance, the degree of difficulty of lowering the temperature signal extraction.
Description
Technical field
The utility model relates to optic fibre manufacturing technology field, particularly a kind of pressure optical fiber.
Background technology
Optical fiber has that volume is little, lightweight, flexible bending, electrical insulating property are good, measurement range is large, corrosion-resistant, sensitivity high, and optical fiber is easily subject to extraneous factor, as the impact of temperature, pressure, magnetic field, electric field etc., the variable quantity of extraneous factor will cause light wave amount, as the change of light intensity, phase place, frequency etc.Along with the development of optical fiber technology and optical sensing, the distributed temperature measuring system based on different mechanism is developed in different field.But the back scattering light intensity obtained from fiber optic materials is far weaker than incident light, causes temperature signal to extract difficulty, cost is not suitable for little engineering field.
Summary of the invention
The purpose of this utility model is to provide a kind of pressure optical fiber, and this pressure optical fiber is conducive to, under the prerequisite keeping suitable thermometric distance, improving temperature measurement accuracy, reduces the difficulty that temperature signal extracts.
The purpose of this utility model is achieved in that a kind of pressure optical fiber, comprise fibre core and the coat being sheathed on fibre core peripheral annular, the internal diameter of described coat is greater than the diameter of fibre core, to form air layer between fibre core and coat, the rear and front end of described pressure optical fiber is respectively equipped with the covering for sealing air layer.
Further, fibre core described in complex root is provided with in described coat.
Further, described covering offers the pressure running through covering and detect through hole, to detect by described pressure the pressure that through hole detects air layer.
Further, described covering offers the connector connector running through covering, on the joints of optical fibre that described pressure optical fiber arranges, correspondence is provided with jointing, accurately docks with the joints of optical fibre to make optical fiber.
Further, the diameter of described fibre core is 9 ~ 50 μm, and the internal diameter of described coat is 120 ~ 130 μm.
The beneficial effects of the utility model there is provided a kind of novel pressure optical fiber being applied to Raman back scattering distributed sensor, this pressure optical fiber replaces original covering by the air layer of innovative design, optical fiber is made both to have kept the low-loss advantage of long-distance sand transport, turn improve optical fiber back scattering light intensity, reduce the difficulty that temperature signal extracts to a certain extent, optical fiber sensing technology can be applied in more multiple-project, there is very strong economy and practicality.
Accompanying drawing explanation
Fig. 1 is the structural representation of the pressure optical fiber of the utility model embodiment one.
Fig. 2 is the structural representation of the joints of optical fibre of the utility model embodiment one.
Fig. 3 is the structural representation of the pressure optical fiber of the utility model embodiment two.
Embodiment
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.
Fig. 1 is the structural representation of the pressure optical fiber of the utility model embodiment one.As shown in Figure 1, pressure optical fiber of the present utility model comprises fibre core 1 and is sheathed on the coat 2 of fibre core 1 peripheral annular, the internal diameter of coat 2 is greater than the diameter of fibre core 1, to form air layer 3 between fibre core 1 and coat 2, the rear and front end of pressure optical fiber is respectively equipped with the covering 4 for sealing air layer 3.
Covering 4 offers the pressure running through covering 4 and detect through hole 5, to detect by pressure the pressure that through hole 5 detects air layer 3.Pressure detects through hole for laying electronic device wire, pressure information displaying is detected interface in computer temperature, detects pressure in real time, exceeding setting ultimate value can automatic early-warning, avoid pressure excessive, certain destruction is caused to fibre core, affect thermometric accuracy.
Covering 4 offers the connector connector 6 running through covering 4, on the joints of optical fibre 7 that pressure optical fiber arranges, correspondence is provided with jointing 8, accurately docks with the joints of optical fibre to make optical fiber.Fibre-optic connector structure as shown in Figure 2.Connector connector is used for being connected with the joints of optical fibre, realizes optical fiber multistage and measures, and some process excessive to air portion partial pressure, plays a part to safeguard and conducting.When long distance thermometric, utilize the joints of optical fibre being suitable for pressure optical fiber optical fiber to be divided into multistage and detect.The design of connector connector had both been conducive to dredging air portion partial pressure, also be conducive to the position of fixed fiberoptic connector connecting fiber, have extraordinary coupling effect, reduce the transverse off set loss of generation, and section clearance loss, better can realize the areal survey of optical fiber.
The diameter of fibre core 1 is 9 ~ 50 μm, and the internal diameter of coat 2 is 120 ~ 130 μm.
Fibre core and covering all use quartz as stock, and fibre core is by high-purity SiO
2+ adulterant, as GeO
2etc. making, (object of fibre core adulterant is to increase SiO
2refractive index).Covering is by high-purity SiO
2+ adulterant, as B
2o
3etc. making (object of fibre core adulterant is in order to reduce SiO2 refractive index).Coat is mainly used in by aeroseal between fibre core and coat, and general material is epoxy resin, silicon rubber and nylon etc.Its size of dopant atom and the difference between valence state and host atoms, significantly change the physical property of crystal by the impurity defect of trace.The effect of therefore adulterating is because of the difference of the character of adulterant, and the refractive index size changing fibre core is also different.
In other embodiments of the utility model, can arrange complex root fibre core 1 in coat 2, to make full use of space in optical fiber, its structure as shown in Figure 3 simultaneously.
Be more than preferred embodiment of the present utility model, all changes done according to technical solutions of the utility model, when the function produced does not exceed the scope of technical solutions of the utility model, all belong to protection domain of the present utility model.
Claims (5)
1. a pressure optical fiber, it is characterized in that, comprise fibre core and the coat being sheathed on fibre core peripheral annular, the internal diameter of described coat is greater than the diameter of fibre core, to form air layer between fibre core and coat, the rear and front end of described pressure optical fiber is respectively equipped with the covering for sealing air layer.
2. a kind of pressure optical fiber according to claim 1, is characterized in that, be provided with fibre core described in complex root in described coat.
3. a kind of pressure optical fiber according to claim 1, is characterized in that, described covering offers the pressure running through covering and detects through hole, to detect by described pressure the pressure that through hole detects air layer.
4. a kind of pressure optical fiber according to claim 1, it is characterized in that, described covering offers the connector connector running through covering, on the joints of optical fibre that described pressure optical fiber arranges, correspondence is provided with jointing, accurately docks with the joints of optical fibre to make optical fiber.
5. a kind of pressure optical fiber according to claim 1, is characterized in that, the diameter of described fibre core is 9 ~ 50 μm, and the internal diameter of described coat is 120 ~ 130 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520968294.7U CN205176320U (en) | 2015-11-30 | 2015-11-30 | Pressure optic fibre |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520968294.7U CN205176320U (en) | 2015-11-30 | 2015-11-30 | Pressure optic fibre |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205176320U true CN205176320U (en) | 2016-04-20 |
Family
ID=55740296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520968294.7U Active CN205176320U (en) | 2015-11-30 | 2015-11-30 | Pressure optic fibre |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205176320U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301694A (en) * | 2015-11-30 | 2016-02-03 | 福建江夏学院 | Pressure fiber and pressure cable formed by pressure fiber |
| CN107167406A (en) * | 2017-07-10 | 2017-09-15 | 西石（厦门）科技有限公司 | A kind of preceding scattering dust instrument optical system based on light cone |
-
2015
- 2015-11-30 CN CN201520968294.7U patent/CN205176320U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301694A (en) * | 2015-11-30 | 2016-02-03 | 福建江夏学院 | Pressure fiber and pressure cable formed by pressure fiber |
| CN105301694B (en) * | 2015-11-30 | 2018-01-12 | 福建江夏学院 | Pressure optical fiber and the pressure optical cable using its composition |
| CN107167406A (en) * | 2017-07-10 | 2017-09-15 | 西石（厦门）科技有限公司 | A kind of preceding scattering dust instrument optical system based on light cone |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |