CN207036690U - The molecular state organic pollutant monitoring sensor of small core single mode single-mode fiber structure is drawn based on single mode - Google Patents
The molecular state organic pollutant monitoring sensor of small core single mode single-mode fiber structure is drawn based on single mode Download PDFInfo
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- CN207036690U CN207036690U CN201720930489.1U CN201720930489U CN207036690U CN 207036690 U CN207036690 U CN 207036690U CN 201720930489 U CN201720930489 U CN 201720930489U CN 207036690 U CN207036690 U CN 207036690U
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Abstract
The utility model discloses a kind of molecular state organic pollutant monitoring sensor that small core single mode single-mode fiber structure is drawn based on single mode, including：First single-mode fiber；The small core single mode of drawing of surface attachment sol-gel silica film layer, the output end welding of its input and the first single-mode fiber；Second single-mode fiber, its input and the output end welding for drawing small core single-mode fiber.When the light that super-radiance light emitting diode light source is sent transmits in the first single-mode fiber, interference is formed in small core single-mode fiber into drawing, the light of part wavelength forms trough wherein, then resumed into the second single-mode fiber relaying defeated, cause to draw small core single-mode fiber environment variations in refractive index when the small core single-mode fiber of drawing with sol-gel silica film layer is in monitored environment, so as to influence the change of Waveguide interference condition, cause the skew of resonance wavelength, according to the offset of resonance wavelength, molecular state organic pollution concentration in monitored environment is obtained.
Description
Technical field
The utility model belongs to molecular state organic pollutant monitoring sensor, and in particular to one kind is small based on single mode-drawing
The molecular state organic pollution on-line monitoring sensor of core single mode-single-mode fiber structure.
Background technology
With the fast development of modern technologies, to the environmental requirement more and more higher tested and produced.Molecular state pollutant pair
Semiconductor production, medical treatment, space industry particularly device of high power laser etc. has quite very big influence.One side molecule
State organic pollution has a strong impact on semiconductor yield；Another aspect molecular state organic pollution produces poly- under light laser effect
Collection, causes the reduction of optical element surface damage threshold, so as to influence the load capacity of whole device.Therefore to optical element
Manufacture, cleaning, installation and material have carried out strict regulation, to ensure laser aid in installation, running as far as possible
Reduce molecular state organic pollution.Clean control is far from being enough in selection, cleaning, installation and running, mainly due to
Device of high power laser is huge and complicated vacuum system, it is necessary to substantial amounts of adhesive, lubricant, high polymer material, packing ring
Etc..In the case of low vacuum, these materials can produce volatilizable molecular state organic pollution, can aggravate under strong illumination
On the one hand these volatilizations, these pollutants are deposited on optical element surface and form film, influence beam quality, and an another aspect absorbs
Light energy produces microburst, causes optical element threshold value to decline.To ensure the continual and steady work of high power laser system, it is necessary to
Molecular state organic pollution in laser aid is monitored on-line.The measuring method of organic pollution mainly has following several at present
Kind mode：(1) gas chromatography-mass spectrometry.This method needs to use the degree of accuracy high, but needs first with clean gas production tank to quilt
Measuring environment carries out gas collecting, and needs professional to be measured using gas chromatograph-mass spectrometer (GC-MS), and this kind of method is taken
When, it is laborious, analysis time is longer, while can not realize on-line monitoring and vacuum environment monitoring requirements.(2) quartz crystal microbalance
Method.This method is a kind of resonant mode measuring instrument, coordinates sensitive material to carry out the measurement of micro- quality, and cost is cheap.But by
It is body resonant mode sensing in this method, is limited to resonant frequency, its precision is nanogram magnitude, while this method realizes distributed pass
Sense is more difficult.(3) surface acoustic wave method.This method resonant frequency is hundred MHz magnitudes, can obtain comparing quartz crysta l microbalance
Higher precision, the surface area larger (several square millimeters) of this method and to lithography requirement height.With other detection methods
Compare, this kind of detection method, which has, avoids secondary pollution, can monitor on-line, sensitivity is higher, be easy to extend, be easy to it is integrated and with
The advantages that ordinary optic fibre is easily attached, it is particularly suitable in sensory field application.
Utility model content
A purpose of the present utility model is that solve at least the above and/or defect, and provides and at least will be described later
The advantages of.
In order to realize according to these purposes of the present utility model and further advantage, there is provided one kind is small based on single mode-drawing
The molecular state organic pollutant monitoring sensor of core single mode-single-mode fiber structure, including：
First single-mode fiber；
Draw small core single-mode fiber, the output end welding of its input and first single-mode fiber；It is described to draw small core
The surface attachment sol-gel silica film layer of single-mode fiber；
Second single-mode fiber, its input and the output end welding for drawing small core single-mode fiber.
Preferably, the diameter of first single-mode fiber and the second single-mode fiber be 125 μm, core diameter be 8~10 μ
m。
Preferably, the small core fibre model SM450 drawn used in small core single-mode fiber, core diameter are 2~3
μm。
Preferably, the small core single-mode fiber lumbar region length of described drawing is 3~10mm, a diameter of 10~20 μm.
Preferably, the sensitive film material is sol-gel silica film layer.
Preferably, the thickness of the sol-gel silica film layer is 1~10 μm.
Preferably, the sol-gel silica film layer is attached to using lifting coating method and draws small core single-mode optics
Fine surface.
Preferably, first single-mode fiber is carried out without acceptance of persons with drawing small core single-mode fiber using optical fiber fusion welding technology
Welding；Second single-mode fiber carries out welding without acceptance of persons with drawing small core single-mode fiber using optical fiber fusion welding technology.
Preferably, the sol-gel silica film layer is attached to using method of electrostatic spinning and draws small core single-mode optics
Fine surface.
The utility model comprises at least following beneficial effect：Molecular state organic pollution on-line monitoring of the present utility model passes
Sensor, when the light that super-radiance light emitting diode light source is sent transmits in the first single-mode fiber, into drawing small core single-mode fiber
Middle formation multiple-mode interfence, the light of part wavelength form trough wherein, then resume defeated into the second single-mode fiber relaying, work as band
The small core single-mode fiber of drawing for having sol-gel silica film layer, which is in monitored environment, to be caused to draw small core single-mode fiber
Ambient refractive index changes, and so as to influence the change of Waveguide interference condition, causes the skew of resonance wavelength, the skew according to resonance wavelength
Amount, obtain molecular state organic pollution concentration in monitored environment.
Further advantage, target and feature of the present utility model embody part by following explanation, and part will also pass through
Research of the present utility model and practice are understood by the person skilled in the art.
Brief description of the drawings：
Fig. 1 is that molecular state organic pollution of the utility model based on the small core single mode-single-mode fiber structure of single mode-drawing exists
Line monitors the structural representation of sensor.
Embodiment：
The utility model is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to explanation
Book word can be implemented according to this.
It should be appreciated that such as " having ", "comprising" and " comprising " term used herein do not allot one or more
The presence or addition of individual other elements or its combination.
Fig. 1 shows that a kind of molecular state based on the small core single mode-single-mode fiber structure of single mode-drawing of the present utility model has
Organic pollutants monitor sensor, including：
First single-mode fiber 1；
Draw small core single-mode fiber 2, the output end welding of its input and first single-mode fiber 1；The drawing is small
The surface attachment sol-gel silica film layer 3 of core single-mode fiber 2；
Second single-mode fiber 4, its input and the output end welding for drawing small core single-mode fiber 2；
Wherein, the diameter of first single-mode fiber and the second single-mode fiber be 125 μm, core diameter be 8~10 μm；Institute
The small core single-mode fiber model SM450 used in the small core single-mode fiber of drawing is stated, core diameter is 2~3 μm；The small core is drawn
The lumbar region length of small core single-mode fiber is 3~10mm, a diameter of 10~20 μm.
The preparation for drawing small core single-mode fiber is that single-mode fiber SM450 is placed on into D translation platform, utilizes hydrogen-oxygen
Flame would be heated to more than 1000 DEG C, and control stepper motor elongates single-mode fiber SM450, and heating part fibre diameter is reduced, shape
The single-mode fiber of pyramidal structure in pairs, prepare and draw small core single-mode fiber.
It is in this technical scheme, the molecular state organic pollution for being attached with sol-gel silica film layer is online
Monitoring sensor is placed in monitored environment, when the molecular state organic pollution concentration of monitored environment changes, causes to draw
Small core single-mode fiber environment variations in refractive index is made, so as to influence the change of Waveguide interference condition, causes the skew of resonance wavelength, foundation
The offset of resonance wavelength, obtain molecular state organic pollution concentration in monitored environment.
In the above-mentioned technical solutions, the thickness of the sol-gel silica film layer is 1~10 μm；The sensitive material
Material film layer is sol-gel silica film layer, using this material layer, organic pollution can be made to be produced on coreless fiber surface
Enrichment, influence the refractive index of waveguiding structure.
In the above-mentioned technical solutions, the sol-gel silica film layer uses lifting coating method to be attached to drawing small
The surface of core single-mode fiber, in this way, sol-gel silica film layer can be securely attached to draw small core list
The surface of mode fiber, and molecular state organic pollution on-line monitoring precision can be improved.
In the above-mentioned technical solutions, the sol-gel silica film layer is hollow ball silica coating；It is described to carry
Draw coating method process be：Compound concentration is 3~5wt% hollow ball silicon dioxide colloid, will draw small core single-mode fiber and consolidate
It is scheduled on the support of lifting coating machine, in the case where pull rate is 300~500mm/min, the surface to drawing small core single-mode fiber
Lifting plated film is carried out, the preparation method of the hollow ball silicon dioxide colloid is：By weight, 0.1~0.5 part of polyacrylic acid is taken
It is dissolved in 5~10 parts of ammonia spirit, is then added in 150~200 parts of ethanol, then by 1~3 part in 3~5 hours
Tetraethyl orthosilicate adds, and continues stirring 3~5 hours, stands 1~3 day, obtains hollow ball silicon dioxide colloid.
In the above-mentioned technical solutions, first single-mode fiber is entered with drawing small core single-mode fiber using optical fiber fusion welding technology
Row welding without acceptance of persons；Second single-mode fiber is melted without acceptance of persons with drawing small core single-mode fiber using optical fiber fusion welding technology
Connect.
In another technical solution, the sol-gel silica film layer is attached to drawing using method of electrostatic spinning
The surface of small core single-mode fiber；The process of the electrostatic spinning is：The silicon dioxide colloid that concentration is 0.5~3wt% is injected
In spray containers with stainless steel shower nozzle, then applied the voltage on stainless steel shower nozzle, and utilized and injection with high voltage power supply
The propulsion pump of container connection sprays the silicon dioxide colloid in spray containers to the small core of drawing of rotation by stainless steel shower nozzle
In single-mode fiber reception device, make the small core single-mode fiber surface attachment silicon dioxide fibrous membrane layer of drawing；The electrostatic spinning
Injection conditions is：Environment temperature is 40~60 DEG C, the output voltage of high voltage power supply is 15~25kv, draw small core single-mode fiber with
Distance is 15~20cm between stainless steel shower nozzle, flow velocity is 10~20mL/h, the rotation for drawing small core single-mode fiber reception device
Speed is 50~150r/min.
Electrospinning process of the present utility model is used silicon dioxide gel is attached to drawing in the form of micro-nano fiber
Small core single-mode fiber surface, the specific surface area of silicon dioxide fibrous membrane layer is big, more preferable to the adsorption effect of organic pollution, makes to have
The Detection results of organic pollutants are more excellent.
Molecular state organic pollution of the present utility model monitors sensor on-line, when super-radiance light emitting diode light source is sent
Light transmitted in the first single-mode fiber, draw small core single mode interference, part wavelength into drawing to be formed in small core single-mode fiber
Light form trough wherein, then into the second single-mode fiber relaying resume it is defeated, when with sol-gel silica film layer
The small core single-mode fiber of drawing be in monitored environment, the molecular state organic pollution concentration of monitored environment changes
When, cause to draw small core single-mode fiber environment variations in refractive index, so as to influence the change of Waveguide interference condition, cause resonance wavelength
Skew, according to the offset of resonance wavelength, obtain molecular state organic pollution concentration in monitored environment.
Number of devices and treatment scale described herein are for simplifying explanation of the present utility model.To the utility model
Based on the small core single mode-single-mode fiber structure of single mode-drawing molecular state organic pollution on-line monitoring sensor application, repair
Change and change will be readily apparent to persons skilled in the art.
Although embodiment of the present utility model is disclosed as above, it is not restricted in specification and embodiment
Listed utilization, it can be applied to various suitable fields of the present utility model completely, for those skilled in the art,
Other modification is easily achieved, therefore under the universal limited without departing substantially from claim and equivalency range, this reality
Specific details is not limited to new and shown here as the legend with description.
Claims (8)
1. a kind of molecular state organic pollutant monitoring sensor based on the small core single mode-single-mode fiber structure of single mode-drawing, it is special
Sign is, including：
First single-mode fiber；
Draw small core single-mode fiber, the output end welding of its input and first single-mode fiber；It is described to draw small core single mode
The surface attachment sol-gel silica film layer of optical fiber；
Second single-mode fiber, its input and the output end welding for drawing small core single-mode fiber.
2. the molecular state organic pollution prison based on the small core single mode-single-mode fiber structure of single mode-drawing as claimed in claim 1
Survey sensor, it is characterised in that the diameter of first single-mode fiber and the second single-mode fiber is 125 μm, core diameter be 8~
10μm。
3. the molecular state organic pollution prison based on the small core single mode-single-mode fiber structure of single mode-drawing as claimed in claim 1
Survey sensor, it is characterised in that the small core fibre model SM450 drawn used in small core single-mode fiber, core diameter 2
~3 μm.
4. the molecular state organic pollution prison based on the small core single mode-single-mode fiber structure of single mode-drawing as claimed in claim 1
Survey sensor, it is characterised in that the small core single-mode fiber lumbar region length of described drawing is 3~10mm, a diameter of 10~20 μm.
5. the molecular state organic pollution prison based on the small core single mode-single-mode fiber structure of single mode-drawing as claimed in claim 1
Survey sensor, it is characterised in that the thickness of the sol-gel silica film layer is 1~10 μm.
6. the molecular state organic pollution prison based on the small core single mode-single-mode fiber structure of single mode-drawing as claimed in claim 1
Survey sensor, it is characterised in that the sol-gel silica film layer is attached to using lifting coating method and draws small core single mode
The surface of optical fiber.
7. the molecular state organic pollution prison based on the small core single mode-single-mode fiber structure of single mode-drawing as claimed in claim 1
Survey sensor, it is characterised in that first single-mode fiber carries out nothing with drawing small core single-mode fiber using optical fiber fusion welding technology
Eccentric welding；Second single-mode fiber carries out welding without acceptance of persons with drawing small core single-mode fiber using optical fiber fusion welding technology.
8. the molecular state organic pollution prison based on the small core single mode-single-mode fiber structure of single mode-drawing as claimed in claim 1
Survey sensor, it is characterised in that the sol-gel silica film layer is attached to using method of electrostatic spinning and draws small core single mode
The surface of optical fiber.
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| CN201720930489.1U CN207036690U (en) | 2017-07-28 | 2017-07-28 | The molecular state organic pollutant monitoring sensor of small core single mode single-mode fiber structure is drawn based on single mode |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107271401A (en) * | 2017-07-28 | 2017-10-20 | 中国工程物理研究院激光聚变研究中心 | The molecular state organic pollutant monitoring sensor of small core single mode single-mode fiber structure is drawn based on single mode |
| CN111272772A (en) * | 2020-03-18 | 2020-06-12 | 中国工程物理研究院激光聚变研究中心 | Organic pollutant online monitoring device and method based on micro-nano optical fiber long-period grating |
| CN112378857A (en) * | 2020-11-13 | 2021-02-19 | 暨南大学 | Micro-nano fiber grating photo-thermal test strip sensor and detection method thereof |
-
2017
- 2017-07-28 CN CN201720930489.1U patent/CN207036690U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107271401A (en) * | 2017-07-28 | 2017-10-20 | 中国工程物理研究院激光聚变研究中心 | The molecular state organic pollutant monitoring sensor of small core single mode single-mode fiber structure is drawn based on single mode |
| CN111272772A (en) * | 2020-03-18 | 2020-06-12 | 中国工程物理研究院激光聚变研究中心 | Organic pollutant online monitoring device and method based on micro-nano optical fiber long-period grating |
| CN112378857A (en) * | 2020-11-13 | 2021-02-19 | 暨南大学 | Micro-nano fiber grating photo-thermal test strip sensor and detection method thereof |
| CN112378857B (en) * | 2020-11-13 | 2023-08-01 | 暨南大学 | Micro-nano fiber grating photo-thermal test strip sensor and detection method thereof |
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