CN101105447A - Gas cell device for photon crystal optical fibre gas sensing - Google Patents
Gas cell device for photon crystal optical fibre gas sensing Download PDFInfo
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- CN101105447A CN101105447A CNA2007100619100A CN200710061910A CN101105447A CN 101105447 A CN101105447 A CN 101105447A CN A2007100619100 A CNA2007100619100 A CN A2007100619100A CN 200710061910 A CN200710061910 A CN 200710061910A CN 101105447 A CN101105447 A CN 101105447A
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- gas
- air chamber
- cell device
- optical fibre
- photon crystal
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Abstract
The invention discloses an air chamber device for the optical fiber gas sensing of photonic crystal. An air inlet (3), an air outlet (6) and two optical fiber clamps (4) are provided on a cylindrical glass air chamber cavity (5). An air pressure gauge is arranged at the air outlet (6), and air chamber end caps (2) are arranged on the two sides of the air outlet (6). The optical fiber clamps (4) is a hollow structure with gaps, a round hole is provided on the middle part of the hollow structure, and a rubber plug (11) which has a small hole in the center is put into the round hole. Screwed holes (7) are processed on the center of the air chamber end caps (2), and the Screwed holes (7) are matched with an outer screwed ring (8) which is arranged with a lens (9) which can be changed. The optical fiber replacing of the light quantum crystal bodies which have different outer diameters can be realized in one gas sensing process, and the replacing of coupling lens of different light wave bands also can be realized.
Description
Technical field
The present invention relates to a kind of gas cell device that is used for photon crystal optical fibre gas sensing.
Background technology
Along with industrialized development and various discharge of harmful gases, need timely and effectively these gases to be detected, the weak high-sensitivity detection that absorbs gas that appears as of photonic crystal fiber provides new opportunity, but associated gas cell device is not well developed, for this reason, the inventor has designed a kind of lens adjustable gas chamber device that is suitable for utilizing the various outer diameter photonic crystal fiber to carry out the gas sensing test in different optical bands, makes the photon crystal fiber-optic fiber gas detection technique can obtain using more widely.
Summary of the invention
Because its porosity characteristic photonic crystal fiber has advantage in the gas sensing context of detection, in order to adapt to the different photonic crystal fiber of external diameter carries out sensing detection research in different optical bands needs, the invention provides a kind of gas cell device that is used for photon crystal optical fibre gas sensing, this invention can realize that the various outer diameter optical-fibre adjustable is changed and at different optical bands transposing coupled lens.
The technical solution adopted for the present invention to solve the technical problems is: the cylindrical glass air chamber has an air intake opening, a gas outlet and two fibre clip, the air chamber end cap is installed at its two ends, a barometer is installed at the place, gas outlet, between air chamber end cap and cylindrical glass air chamber sealing gasket is set so that increase the sealing of air chamber; Described fibre clip is done engraved structure at interval, and there is a circular hole centre, foraminate rubber plug in the middle of filling in the circular hole, and the rubber consent is used to insert the photonic crystal fiber of different size.The center of air chamber end cap is processed with threaded hole, and threaded hole matches with the external thread ring that lens are housed, and the lens in the external thread ring can be changed according to the characteristic absorption wavelength of gas with various.
The invention has the beneficial effects as follows: can detect various harmful gases such as methane, acetylene, can change the lens of different focal according to the characteristic absorption wavelength of gas with various, the photonic crystal fiber of also replaceable various outer diameter or structure reaches the purpose of gas with various being carried out high-sensitivity detection.Advantages such as the present invention has simple in structure, and controllability is strong.
Description of drawings
Fig. 1 is the structural representation of the gas cell device of photon crystal optical fibre gas sensing;
Fig. 2 is an external thread ring structure synoptic diagram;
Fig. 3 is that the A of air chamber end cap is to view;
Fig. 4 is the B-B view of fibre clip.
In above-mentioned accompanying drawing, 1. screw, 2. air chamber end cap, 3. air intake opening, 4. fibre clip, 5. air chamber, 6. gas outlet, 7. internal thread hole, 8. external thread ring, 9. lens, 10. through hole, 11. rubber plugs, 12. fan ring hollow outs.
Embodiment
Fig. 1 is an embodiment disclosed by the invention, according to detecting needs, makes cylindrical air chamber 5 with glass material according to template, has air intake opening 3, gas outlet 6 on it.Make circular air chamber end cap 2 with metal material, be fixed on the two ends of air chamber 5, an internal thread hole 7 is arranged on the air chamber end cap 2, be used for fixing metal external thread ring 8 with screw 1.External thread ring 8 matches with internal thread hole 7 on the air chamber end cap 2, and metal external thread ring 8 internal diameter fixed lenss 9 as required, can select the lens 9 of different focal to be loaded in the metal external thread ring 8, have realized lens scalable function.Fibre clip 4 usefulness glass materials are made into engraved structure, can help gas and circulate in air chamber, and the intracardiac rubber consent 11 that is provided with in the fibre clip 4 is used to insert the photonic crystal fiber of different size.The two ends of photonic crystal fiber are fixing by fibre clip 4 and rubber consent 5, the lens 9 of corresponding size are bumped into metal external thread ring 8, be screwed in the internal thread hole 7 of air chamber end cap 2.According to the focal length of known lens 9, scalable optical fiber makes end centre of optic fibre overlap with the focus of lens 9, opens light source, measures and does not charge into the transmission spectrum of tested gas time through lens 9 and optical fiber.Whether detect air chamber 5 seals, insert gas to be measured by air intake opening 3 then, can be in the gas outlet 6 the absorption spectras that a barometer detects gas under different air pressure be installed, can calculate the concentration of gas, reach the purpose of gas detection according to no gas transmission spectrum when gas is arranged.
Claims (5)
1. gas cell device that is used for photon crystal optical fibre gas sensing, it is characterized in that: described cylindrical glass air chamber (5) has an air intake opening (3), a gas outlet (6) and two fibre clip (4), and air chamber end cap (2) is installed at its two ends.
2. the gas cell device that is used for photon crystal optical fibre gas sensing according to claim 1 is characterized in that: fibre clip (4) is done engraved structure at interval, and there is a circular hole centre, foraminate rubber plug (11) in the middle of filling in the circular hole.
3. the gas cell device that is used for photon crystal optical fibre gas sensing according to claim 1 and 2 is characterized in that: the center of air chamber end cap (2) is processed with threaded hole (7), and threaded hole (7) matches with the external thread ring (8) that lens (9) are housed.
4. the gas cell device that is used for photon crystal optical fibre gas sensing according to claim 3 is characterized in that: gas outlet (6) locate to install barometer.
5. the gas cell device that is used for photon crystal optical fibre gas sensing according to claim 3 is characterized in that: lens (9) interchangeable in the external thread ring (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100619100A CN101105447A (en) | 2007-05-18 | 2007-05-18 | Gas cell device for photon crystal optical fibre gas sensing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100619100A CN101105447A (en) | 2007-05-18 | 2007-05-18 | Gas cell device for photon crystal optical fibre gas sensing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101105447A true CN101105447A (en) | 2008-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100619100A Pending CN101105447A (en) | 2007-05-18 | 2007-05-18 | Gas cell device for photon crystal optical fibre gas sensing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101105447A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279154A (en) * | 2011-06-23 | 2011-12-14 | 天津大学 | Hollow photon crystal optical fiber-based optical fiber-connected low-pressure gas chamber device |
| CN104165882A (en) * | 2014-08-29 | 2014-11-26 | 四川九高科技有限公司 | Gas input device and Raman spectrometer comprising gas input device |
| CN106768859A (en) * | 2016-12-09 | 2017-05-31 | 中国科学院物理研究所 | A kind of spectrum widening device based on large mode field antiresonance hollow-core photonic crystal fiber |
| CN112198116A (en) * | 2020-09-28 | 2021-01-08 | 杭州永特信息技术有限公司 | Optical fiber detection auxiliary device |
-
2007
- 2007-05-18 CN CNA2007100619100A patent/CN101105447A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279154A (en) * | 2011-06-23 | 2011-12-14 | 天津大学 | Hollow photon crystal optical fiber-based optical fiber-connected low-pressure gas chamber device |
| CN104165882A (en) * | 2014-08-29 | 2014-11-26 | 四川九高科技有限公司 | Gas input device and Raman spectrometer comprising gas input device |
| CN104165882B (en) * | 2014-08-29 | 2018-04-27 | 四川九高科技有限公司 | Raman spectrometer including gas input device |
| CN106768859A (en) * | 2016-12-09 | 2017-05-31 | 中国科学院物理研究所 | A kind of spectrum widening device based on large mode field antiresonance hollow-core photonic crystal fiber |
| CN106768859B (en) * | 2016-12-09 | 2019-03-19 | 中国科学院物理研究所 | A kind of spectrum widening device based on large mode field antiresonance hollow-core photonic crystal fiber |
| CN112198116A (en) * | 2020-09-28 | 2021-01-08 | 杭州永特信息技术有限公司 | Optical fiber detection auxiliary device |
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