CN206990779U - The sensor of small core single mode single-mode fiber structure is drawn based on single mode - Google Patents
The sensor of small core single mode single-mode fiber structure is drawn based on single mode Download PDFInfo
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- CN206990779U CN206990779U CN201720931111.3U CN201720931111U CN206990779U CN 206990779 U CN206990779 U CN 206990779U CN 201720931111 U CN201720931111 U CN 201720931111U CN 206990779 U CN206990779 U CN 206990779U
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Abstract
The utility model discloses a kind of sensor that small core single mode single-mode fiber structure is drawn based on single mode, including：First single-mode fiber；Draw small core single mode, the output end welding of its input and the first single-mode fiber；Draw the surface attachment giant magnetostrictive material layer of small core single-mode fiber；Second single-mode fiber, its input and the output end welding for drawing small core single-mode fiber.In the utility model, 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 giant magnetostrictive material that miniature deformation and waveguide index occurs so as to influence the change of Waveguide interference condition when the small core single-mode fiber of drawing with giant magnetostrictive material layer is in magnetic field environment, cause the skew of resonance wavelength, the offset of foundation resonance wavelength, obtain the variable quantity in magnetic field.
Description
Technical field
The utility model belongs to magnetic field intensity detection means, and in particular to one kind is based on the small core single mode-single mode of single mode-drawing
The magnetic field intensity detection sensor of optical fiber structure.
Background technology
Magnetic-field measurement is all significant for fields such as science, military affairs, commercial Applications.Traditional magnetic field sensor be with
Based on electrical testing principle, such as electromagnetic induction principle and Hall effect, but often easily done as the sensor of Electrical Measuring Instrument by electromagnetism
Disturb, it is perishable, it can not be operated under rugged environment.Thus the magnetic field sensor of optical profile type increasingly comes concerned.Optical fiber is made
Be a kind of material of essence insulation there is the advantages of exclusive in terms of magnetic field sensing, except not by electromagnetic interference also have small volume,
It is in light weight, precision is high, the advantages that being easily formed distributed measurement, can also be operated in high temperature, high pressure, high-intensity magnetic field, corrosive atmosphere
Deng special occasions, there are some unique advantages compared with electrical sensor.
The method that current published fibre optic magnetic field sensor is typically combined using optical fiber with magnetic fluid, the light of this method
Fine magnetic field sensor needs complicated and accurate manufacture craft mostly, and integrated level is not high causes its less stable, therefore,
It is a kind of make simple, high sensitivity, integrated level is high and reliable and stable magnetic field sensor urgently solves as those skilled in the art
Technical problem certainly.
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 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 giant magnetostrictive material 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 giant magnetostrictive material layer is terbium dysprosium ferrum giant magnetostrictive material layer.
Preferably, the thickness of the giant magnetostrictive material layer is 1~10 μm.
Preferably, the giant magnetostrictive material layer be attached to using mounting method or vacuum magnetic-control sputtering method draw it is small
The surface of core single-mode fiber.
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.
The utility model comprises at least following beneficial effect：Magnetic field detection sensor of the present utility model, when superradiance is sent out
The light that optical diode light source is sent is transmitted in the first single-mode fiber, and multiple-mode interfence is formed into drawing in small core single-mode fiber,
The light of part wavelength forms trough wherein, then into the second single-mode fiber relaying resume it is defeated, when with ultra-magnetic telescopic material
The small core single-mode fiber of drawing of the bed of material, which is in magnetic field environment, causes giant magnetostrictive material that miniature deformation and waveguide refraction occurs
Rate change causes the skew of resonance wavelength, according to resonance so as to influence to draw the change of the Waveguide interference condition of small core single-mode fiber
The offset of wavelength, obtain the variable quantity in magnetic field.
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 the structural representation of sensor of the utility model based on the small core single mode-single-mode fiber structure of single mode-drawing
Figure.
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 a kind of sensor based on the small core single mode-single-mode fiber structure of single mode-drawing of the present utility model,
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 giant magnetostrictive material 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.
In this technical scheme, the magnetic field intensity detection sensor for being attached with giant magnetostrictive material layer is placed in magnetic field
In, magnetic field intensity occurs increase or reduced, and can cause to have that giant magnetostrictive material film elongates or shortens and waveguide reflects
Rate is changed, and small core single-mode fiber longitudinal length generation miniature deformation is drawn so as to cause so that and resonance wavelength shifts,
Causing to draw the interference signal formed in small core single-mode fiber and change, last signal is received by indium gallium arsenic-photodetector,
External environment condition magnetic field intensity counter can be pushed away by carrying out processing to reception signal.
In the above-mentioned technical solutions, the thickness of the giant magnetostrictive material layer is 1~10 μm；The ultra-magnetic telescopic material
The bed of material is rare earth material terbium dysprosium ferrum (Terfenol-D) giant magnetostrictive material layer, and using this material layer, it is each at normal temperatures
Anisotropy constant is almost nil, shows huge magnetostrictive effect, and magnetostriction coefficient is up to 1500-2000ppm, can
Sensitive detection is realized in magnetic field.
In the above-mentioned technical solutions, the giant magnetostrictive material layer is adhered to using mounting method or vacuum magnetic-control sputtering method
On the surface of the small core single-mode fiber of drawing, sputtering target material is 99.9% terbium dysprosium using purity in the vacuum magnetic-control sputtering method
Iron target, 1 × 10-3Under Pa high vacuum, argon gas is as process gas, air pressure 0.5Pa, using radio-frequency sputtering technique, initial power
70W, sputtering power 150W.In this way, giant magnetostrictive material layer can be securely attached to draw small core single-mode optics
Fine surface, and the accuracy of detection in magnetic field can be improved.
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.
Magnetic field detection sensor of the present utility model, when the light that super-radiance light emitting diode light source is sent is in the first single-mode optics
Transmitted in fibre, draw small core single mode interference into drawing to be formed in small core single-mode fiber, the light of part wavelength forms ripple wherein
Paddy, then into the second single-mode fiber relaying resume it is defeated, at the small core single-mode fiber of drawing with giant magnetostrictive material layer
Cause giant magnetostrictive material that miniature deformation occurs in magnetic field environment and occur so as to influence to draw the overall length of small core single-mode fiber
Change, causes the skew of resonance wavelength, according to the offset of resonance wavelength, obtains the variable quantity in magnetic field.
Number of devices and treatment scale described herein are for simplifying explanation of the present utility model.To the utility model
The application of the magnetic field intensity detection sensor based on the small core single mode-single-mode fiber structure of single mode-drawing, modifications and variations are to this
It is obvious for the technical staff in field.
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)
- A kind of 1. sensor based on the small core single mode-single-mode fiber structure of single mode-drawing, it is characterised in that 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 giant magnetostrictive material layer of optical fiber；Second single-mode fiber, its input and the output end welding for drawing small core single-mode fiber.
- 2. the sensor as claimed in claim 1 based on the small core single mode-single-mode fiber structure of single mode-drawing, it is characterised in that The diameter of first single-mode fiber and the second single-mode fiber is 125 μm, core diameter is 8~10 μm.
- 3. the sensor as claimed in claim 1 based on the small core single mode-single-mode fiber structure of single mode-drawing, it is characterised in that The small core fibre model SM450 drawn used in small core single-mode fiber, core diameter are 2~3 μm.
- 4. the sensor as claimed in claim 1 based on the small core single mode-single-mode fiber structure of single mode-drawing, 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 sensor as claimed in claim 1 based on the small core single mode-single-mode fiber structure of single mode-drawing, it is characterised in that The giant magnetostrictive material layer is terbium dysprosium ferrum giant magnetostrictive material layer.
- 6. the sensor as claimed in claim 1 based on the small core single mode-single-mode fiber structure of single mode-drawing, it is characterised in that The thickness of the giant magnetostrictive material layer is 1~10 μm.
- 7. the sensor as claimed in claim 1 based on the small core single mode-single-mode fiber structure of single mode-drawing, it is characterised in that The giant magnetostrictive material layer is attached to the surface for drawing small core single-mode fiber using mounting method or vacuum magnetic-control sputtering method.
- 8. the sensor as claimed in claim 1 based on the small core single mode-single-mode fiber structure of single mode-drawing, it is characterised in that First single-mode fiber carries out welding without acceptance of persons with drawing small core single-mode fiber using optical fiber fusion welding technology；Second single mode Optical fiber carries out welding without acceptance of persons with drawing small core single-mode fiber using optical fiber fusion welding technology.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720931111.3U CN206990779U (en) | 2017-07-28 | 2017-07-28 | The sensor of small core single mode single-mode fiber structure is drawn based on single mode |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720931111.3U CN206990779U (en) | 2017-07-28 | 2017-07-28 | The sensor of small core single mode single-mode fiber structure is drawn based on single mode |
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|---|---|
| CN206990779U true CN206990779U (en) | 2018-02-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115566518A (en) * | 2022-11-07 | 2023-01-03 | 中国航天三江集团有限公司 | Method and device for inhibiting MI (Mimi) effect in optical fiber laser by using magnetostrictive material |
-
2017
- 2017-07-28 CN CN201720931111.3U patent/CN206990779U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115566518A (en) * | 2022-11-07 | 2023-01-03 | 中国航天三江集团有限公司 | Method and device for inhibiting MI (Mimi) effect in optical fiber laser by using magnetostrictive material |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180209 Termination date: 20180728 |