CN108332654B - A kind of long controllable mini optical fibre Fabry-platinum Luo Gan's interferometer production method of chamber - Google Patents
A kind of long controllable mini optical fibre Fabry-platinum Luo Gan's interferometer production method of chamber Download PDFInfo
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- CN108332654B CN108332654B CN201810091247.7A CN201810091247A CN108332654B CN 108332654 B CN108332654 B CN 108332654B CN 201810091247 A CN201810091247 A CN 201810091247A CN 108332654 B CN108332654 B CN 108332654B
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 34
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 229910052697 platinum Inorganic materials 0.000 title claims abstract description 13
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 239000000835 fiber Substances 0.000 claims abstract description 35
- 238000003466 welding Methods 0.000 claims description 21
- 230000004323 axial length Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 241001149930 Protura <class> Species 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 17
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 abstract 1
- 239000000523 sample Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B9/00—Measuring instruments characterised by the use of optical techniques
- G01B9/02—Interferometers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/353—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
- G01D5/35306—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using an interferometer arrangement
- G01D5/35309—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using an interferometer arrangement using multiple waves interferometer
- G01D5/35312—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using an interferometer arrangement using multiple waves interferometer using a Fabry Perot
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Abstract
The invention belongs to optical fibre device manufacture technology fields, disclose a kind of long controllable mini optical fibre Fabry-platinum Luo Gan interferometer (Fabry-Perot Interferometer, FPI) production method of chamber.Cone method is drawn to make miniature air chamber FPI using single mode optical fiber splicing hollow optic fibre (HCF) and electric discharge.Structure size can be controlled by adjusting series of parameters, such as HCF length and various splicing parameters, such as taper length, and two fiber overlap margins and discharge parameter and discharge time.This method can be obtained that size is controllable, repeatable, efficient mini air chamber Fabry-platinum Luo Gan's interferometer, play a crucial role in based on Fabry-platinum sieve interference sensor.This method can make the horizontal and vertical length of FPI microcavity that efficient production may be implemented from low-down value to very high value.The method can be required according to user, manufacture the miniature air chamber FPI of arbitrary dimension.In addition, miniature air chamber FPI probe can be used for the parameter detections such as axial stress, temperature.
Description
Technical field
The invention belongs to optical fibre device manufacture technology fields, are related to a kind of long controllable mini optical fibre Fabry-platinum sieve of chamber
Interferometer (Fabry-Perot Interferometer, FPI) production method.
Background technique
Since the 1970s, low loss fiber was succeeded in developing, optical fiber begins to gradually be developed to by the communications field
Sensory field.Optical fiber sensing technology is using light wave as carrier, and optical fiber is perceived and transmitted to extraneous parameter as medium
New Sensing Technology.Compared with traditional sensors, fibre optical sensor have high sensitivity, anti-interference, structure is simple, it is small in size,
Light weight, optical path are flexible, influence the advantages that small, convenient for forming network to measured medium, oneself warp of optical fiber sensing technology is wide at present
General is applied to the fields such as national defence, space flight, aviation, energy environment protection, industrial measurement and control, biomedicine, hygiene medical treatment, metrology and measurement.
In many kinds of fibre optical sensor, it is based on Fabry-platinum Luo Gan interferometer (Fabry-Perot Interferometer, FPI)
The novel Microstructure optical fiber FPI sensor of structure, due to simple, essential safety, high sensitivity, bandwidth, anti-electricity with structure
The advantages that magnetic disturbance, high temperature resistant and favor by domestic and foreign scholars, research temperature increase year by year.Especially suitable for high temperature, Qiang Ci
Measurement under interference and the adverse circumstances such as inflammable and explosive to the physical quantitys such as static low-voltage, minute-pressure and sound wave, vibration.Production at present
The method of micro- air chamber FPI sensor mainly has (1) femtosecond laser drilling method (2) hollow optic fibre hi-precision cutting welding process
(3) interconnection method in single mode optical fiber capillary.Method (1) needs expensive femtosecond system of processing, and method (2) needs to use
Expensive high-precision optical fiber diced system, method (3), which is generally required using glue, fixes docking structure, inevitably introduces
Temperature crosstalk.Therefore, how to realize that the low cost of miniature air chamber FPI, high-precision make, have become current optical fiber FPI and pass
One research hotspot in sense field.
Summary of the invention
The present invention solves the problems such as current optical fiber miniature air chamber FPI production is difficult, and structure size control is difficult, proposes
A kind of size is controllable, repeatable, efficient mini air chamber FPI production method, passes in the interference formula based on Fabry Perot
It is played a crucial role in sensor.Draw the method production of cone micro- using single mode optical fiber splicing hollow optic fibre (HCF) and electric discharge
Type air chamber FPI.Structure size can be controlled by adjusting series of parameters with target requirement, such as HCF length and various molten
Parameter is connect, such as taper length, two fiber overlap margins and discharge parameter have low in cost, high mechanical strength, production method letter
Single advantage.
The specific technical proposal of the invention is:
A kind of long controllable mini optical fibre Fabry-platinum Luo Gan's interferometer production method of chamber, includes the following steps:
(1) the hollow optic fibre other end is cut in single mode optical fiber and the welding of hollow optic fibre one end, so that hollow optic fibre is specified length
Degree, then in another section single-mould fiber of hollow optic fibre other end welding；
(2) cone is drawn in electric discharge at the axial centre of hollow optic fibre, and is fused；
(3) to discharging at the conehead of hollow optic fibre fusing, with the increase of discharge time, miniature air chamber axial length by
Gradual change is small, and the ratio of miniature air chamber axial length and radical length changes therewith, so that realization is controllable in linear dimension, obtains mesh
Miniature air chamber Fabry-platinum Luo Gan's interferometer of dimensioning.
Welding in above-mentioned steps (1) is without welding of collapsing.
Discharge operation in above-mentioned steps (2), (3) is completed by heat sealing machine.
The invention has the following advantages:
(1) present invention using optical fiber splicer carry out welding, welding process is simple, splicing parameter is adjustable, discharge time and
Strength of discharge can be controlled flexibly.
(2) welding process that the present invention uses is hollow optic fibre without welding of collapsing, and can effectively improve FPI end face reflection rate,
High mechanical strength, miniature air chamber FPI structure size are controllable.
Detailed description of the invention
Fig. 1 is the miniature air chamber FPI schematic diagram of manufacturing method based on hollow optic fibre welding electric discharge, wherein a is single-mode optics
Fine and hollow optic fibre welding figure；B is single mode optical fiber and hollow optic fibre welding effect picture；C is single mode optical fiber-hollow optic fibre section welding
Another single mode optical fiber schematic diagram；D is that hollow optic fibre draws cone fusing schematic diagram；E is that hollow optic fibre draws effect picture after cone fusing；F is
The molten ball that discharges makes air chamber FPI schematic diagram.In figure: 1 single mode optical fiber A；2 hollow optic fibres；3 single mode optical fiber B；4 single mode optical fibers with
Hollow optic fibre section；5 discharge electrodes.
Fig. 2 is the miniature air chamber FPI microscope figure of various sizes of hollow optic fibre welding electric discharge, a length of 190 μm of (a) chamber
(b) a length of a length of 47.5 μm of 77 μm of (d) chambers of a length of 107 μm of (c) chambers of chamber.
Fig. 3 is a length of 77 μm of chamber of miniature air chamber FPI interference spectrum.
Specific embodiment
To keep above-mentioned purpose, advantage more understandable, with reference to the accompanying drawing and specific embodiment is further to the present invention
Explanation.
Specific implementation process of the present invention is as follows:
Single mode optical fiber A1 is cut flat with using cutter first, single mode optical fiber A1 and hollow optic fibre 2 are then used into heat sealing machine
It realizes and constitutes single mode optical fiber and hollow optic fibre section 4 without welding of collapsing, later single mode optical fiber and hollow optic fibre section 4 and single mode optical fiber B3
Without welding of collapsing, the good structure of welding is discharged at hollow optic fibre center using heat sealing machine and draws cone, electrical discharge arc parameter setting are as follows:
Strength of discharge 80unit, discharge time 200ms, it is 3 μm that electrode single, which promotes length,.Until fusing, discharges at conehead, with
The increase of discharge time, FP chamber length gradually become smaller, the change of cavity length of air chamber FPI, so that realization is controllable in linear dimension, by adopting
With different inner diameters hollow optic fibre, also may be implemented high to air chamber FPI chamber controllable.
As shown in Figure 2, with the increase of discharge time, air chamber FPI chamber is long to be presented decline trend, gives respectively in Fig. 2
Gone out chamber it is 190 μm a length of, 107 μm, 77 μm, 47.5 μm be practical FPI structure chart, and by the transmission light of 77 μm of air chamber FPI
Spectrum shows that in Fig. 3, spectrum is presented the sinusoidal trend of standard FPI and has biggish fringe contrast (4.9dB), therefore, this
Method may be implemented that size is controllable, repeatable, efficient mini air chamber FPI production.
Claims (3)
1. a kind of long controllable mini optical fibre Fabry-platinum Luo Gan's interferometer production method of chamber, include the following steps: single mode optical fiber with
The hollow optic fibre other end is cut in the welding of hollow optic fibre one end, so that hollow optic fibre is designated length, then in the hollow optic fibre other end
Another section single-mould fiber of welding；It is characterized in that, the production method further includes following steps:
(1) cone is drawn in electric discharge at the axial centre of hollow optic fibre, and is fused；
(2) to discharging at the conehead of hollow optic fibre fusing, with the increase of discharge time, miniature air chamber axial length gradually becomes
Small, the ratio of miniature air chamber axial length and radical length changes therewith, so that realization is controllable in linear dimension, obtains target ruler
Very little miniature air chamber Fabry-platinum Luo Gan's interferometer.
2. the long controllable mini optical fibre Fabry-platinum Luo Gan's interferometer production method of a kind of chamber according to claim 1, special
Sign is that the welding is without welding of collapsing.
3. the long controllable mini optical fibre Fabry-platinum Luo Gan's interferometer production method of a kind of chamber according to claim 1 or 2,
It is characterized in that, discharge operation described in step (1), (2) is completed by heat sealing machine.
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| CN108332654B true CN108332654B (en) | 2019-06-28 |
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| CN108982415B (en) * | 2018-08-14 | 2020-03-24 | 东北大学 | GQDs-PVA filling-based FPI cascaded optical fiber humidity sensor and preparation method thereof |
| CN110470328B (en) * | 2019-07-29 | 2021-07-09 | 东北大学 | Optical fiber FP sensor with low temperature drift and filling function and preparation method thereof |
| CN110726374B (en) * | 2019-09-17 | 2021-12-07 | 天津大学 | Optical fiber Fabry-Perot strain sensor based on single-mode optical fiber, manufacturing method and measuring method |
| CN110597321B (en) * | 2019-09-19 | 2020-10-16 | 东北大学 | Temperature control device for leather grade liquid |
| CN112748076B (en) * | 2020-12-02 | 2023-03-17 | 北京信息科技大学 | Micro-pressure calcium ion detection optical pole based on optical fiber interference structure surface film modification |
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| CN113432750A (en) * | 2021-05-20 | 2021-09-24 | 武汉工程大学 | High-sensitivity temperature sensor based on hollow optical fiber and manufacturing method thereof |
| CN113483794B (en) * | 2021-09-08 | 2021-11-09 | 西北工业大学 | F-P sensor preparation facilities convenient to monitoring angle regulation and length |
| CN116125597A (en) * | 2023-04-13 | 2023-05-16 | 南京信息工程大学 | High-temperature sensor based on hollow fiber, preparation and use methods |
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