CN207317936U - A kind of light wave detection device - Google Patents
A kind of light wave detection device Download PDFInfo
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- CN207317936U CN207317936U CN201721253617.XU CN201721253617U CN207317936U CN 207317936 U CN207317936 U CN 207317936U CN 201721253617 U CN201721253617 U CN 201721253617U CN 207317936 U CN207317936 U CN 207317936U
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- coupler
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- fiber
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Abstract
The utility model discloses a kind of light wave detection device, including wideband light source, single mode optical fiber, three-dB coupler, micro-nano Bragg grating, edge filter, PIN avalanche diodes, capture card, amplifying circuit and computer, the wideband light source is connected by the single mode optical fiber with the three-dB coupler, the three-dB coupler is connected by the single mode optical fiber with the micro-nano Bragg grating, and the three-dB coupler also passes sequentially through data cable and be connected with the edge filter, PIN avalanche diodes, capture card, amplifying circuit, computer；The micro-nano Bragg grating includes micro-nano bragg fiber, is symmetricly set on the light fibre core at the micro-nano bragg fiber both ends and the fibre cladding being coated on the light fibre core.
Description
Technical field
Sensor technical field is the utility model is related to, specifically a kind of light wave detection device.
Background technology
In real life, sensor plays an important role in many fields, wherein, fibre optical sensor is because of its volume
Small, light weight, be not easy the advantages that burn into high sensitivity, good in anti-interference performance and enjoy favor.Fibre optical sensor can be divided into function
Type（Sensing type）Sensor nand function type（Light transmission type）Sensor.Feature sensor can be divided into pressure, stress, temperature again
The different types of sensors such as degree, refractive index.These sensors are wide in every field such as environment measuring, chemical industry, medicine, space flight
General application.
And the apparatus structure of existing detection light wave is complicated, production cost is high, and detection structure is not directly perceived enough, sensitivity not
It is high.
Utility model content
For the deficiency of above-mentioned technology, the utility model proposes the system of a kind of light wave detection device and spr sensor
Preparation Method.
A kind of light wave detection device of the utility model, including wideband light source, single mode optical fiber, three-dB coupler, micro-nano cloth
Glug grating, edge filter, PIN avalanche diodes, capture card, amplifying circuit and computer, the wideband light source pass through institute
State single mode optical fiber to be connected with the three-dB coupler, the three-dB coupler passes through the single mode optical fiber and described micro-nano Prague light
Grid connect, the three-dB coupler also with the edge filter, PIN avalanche diodes, capture card, amplifying circuit, computer according to
It is secondary to be connected by data cable；The micro-nano Bragg grating includes micro-nano bragg fiber, is symmetricly set on the micro-nano Bradley
The light fibre core at lattice optical fiber both ends and the fibre cladding being coated on the light fibre core.
Further technical solution, the micro-nano bragg fiber pass through fibre cladding described in chemical attack and light fibre core
It is made.
The beneficial effects of the utility model are：
The light that wideband light source is sent is passed to micro-nano Bragg grating by three-dB coupler.The change of exterior environment can change
Become the parameter of the light wave of micro-nano area transmission, on each grid face of micro-nano Bragg grating, meet the light of Mode Coupling condition
It will be reflected, these light are constantly accumulated in reflection process, and the centre wavelength of the reflection peak of Bragg grating has been sent out at this time
Raw drift.Edge filter is transferred to by three-dB coupler again, optical signal is received in output terminal, using opto-electronic conversion, light is believed
Number electric signal is converted into, amplifies by signal, handle, can finally obtain data on computers；
The utility model can be simplerly to wavelength change be detected, by the processing of computer to data into
The functional relation of corresponding wavelength and external environment condition parameter is obtained after row analysis, can so make the presentation of data（The drift of wavelength）
It is more visual and clear.And change of the micro-nano bragg fiber to exterior parameter is very sensitive；It is certain in fibre core diameter, refractive index
In the case of, the drift of micro-nano Bragg grating reflection spectral line is only related with the external refractive index change；And cause the external refractive index
The factor of change includes concentration, temperature etc..As long as the change of exterior parameter can cause micro-nano fiber sensing unit effective refractive index
Change, which can all detect the change of wavelength.Therefore the application range of the device is wide and possesses the sensitive of higher
Degree, detection result are good.
Brief description of the drawings
In order to illustrate more clearly of utility model embodiment or technical solution of the prior art, below will to embodiment or
Attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
Some embodiments of utility model, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to these attached drawings.
Fig. 1 is a kind of structure diagram of light wave detection device of the utility model；
Fig. 2 is the structure diagram of micro-nano Bragg grating in Fig. 1.
Embodiment
All features disclosed in this specification, or disclosed all methods or during the step of, except mutually exclusive
Feature and/or step beyond, can combine in any way.
This specification（Including any accessory claim, summary and attached drawing）Disclosed in any feature, except non-specifically chatting
State, can be replaced by other alternative features that are equivalent or have similar purpose.I.e., unless specifically stated, each feature
It is an example in a series of equivalent or similar characteristics.
As shown in Figure 1 to Figure 2, a kind of light wave detection device of the utility model device, including wideband light source 1, single-mode optics
Fibre 2, three-dB coupler 3, micro-nano Bragg grating 4, edge filter 5, PIN avalanche diodes 6, capture card 7,8 and of amplifying circuit
Computer 9, the wideband light source 1 are connected by the single mode optical fiber 2 with the three-dB coupler 3, and the three-dB coupler 3 passes through
The single mode optical fiber 2 is connected with the micro-nano Bragg grating 4, the three-dB coupler 3 also with the edge filter 5, PIN
Avalanche diode 6, capture card 7, amplifying circuit 8, computer 9 pass sequentially through data cable connection；The micro-nano Bragg grating 4 wraps
Micro-nano bragg fiber 41 is included, the light fibre core 42 at 41 both ends of micro-nano bragg fiber is symmetricly set on and is coated on institute
State the fibre cladding 43 on light fibre core 42.
Further technical solution, the micro-nano bragg fiber 41 pass through fibre cladding described in chemical attack 43 and light
Fibre core 42 is made, and after corrosion, is fully cleaned with deionized water, so that the micro-nano bragg fiber 41 is exposed to air
In.
The beneficial effects of the utility model are：The light that wideband light source is sent is passed to micro-nano Prague light by three-dB coupler
Grid.The change of exterior environment can change the parameter of the light wave of micro-nano area transmission, in each grid face of micro-nano Bragg grating
On, meet that the light of Mode Coupling condition can all be reflected, these light are constantly accumulated in reflection process, at this time Bragg grating
The centre wavelength of reflection peak has occurred and that drift.Edge filter is transferred to by three-dB coupler again, light letter is received in output terminal
Number, using opto-electronic conversion, electric signal is converted optical signal into, amplifies by signal, handle, can finally be obtained on computers
Data；
The utility model can be simplerly to wavelength change be detected, by the processing of computer to data into
The functional relation of corresponding wavelength and external environment condition parameter is obtained after row analysis, can so make the presentation of data（The drift of wavelength）
It is more visual and clear.And change of the micro-nano bragg fiber to exterior parameter is very sensitive；It is certain in fibre core diameter, refractive index
In the case of, the drift of micro-nano Bragg grating reflection spectral line is only related with the external refractive index change；And cause the external refractive index
The factor of change includes concentration, temperature etc..As long as the change of exterior parameter can cause micro-nano fiber sensing unit effective refractive index
Change, which can all detect the change of wavelength.Therefore the application range of the device is wide and possesses the sensitive of higher
Degree, detection result are good.
The advantages of basic principle, main feature and the utility model of the utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the present utility model is not limited to the above embodiments, described in above embodiments and description
Simply the utility model principle, on the premise of not departing from the spirit and scope of the utility model, the utility model also has
Various changes and modifications, these changes and improvements are both fallen within claimed the utility model.The requires of the utility model is protected
Scope is defined by the appending claims and its equivalent thereof.
Claims (2)
1. a kind of light wave detection device, including the filter of wideband light source, single mode optical fiber, three-dB coupler, micro-nano Bragg grating, edge
Ripple device, PIN avalanche diodes, capture card, amplifying circuit and computer, it is characterised in that：The wideband light source passes through the list
Mode fiber is connected with the three-dB coupler, and the three-dB coupler is connected by the single mode optical fiber and the micro-nano Bragg grating
Connect, the three-dB coupler also leads to successively with the edge filter, PIN avalanche diodes, capture card, amplifying circuit, computer
Cross data cable connection；The micro-nano Bragg grating includes micro-nano bragg fiber, is symmetricly set on described micro-nano Prague light
The light fibre core at fine both ends and the fibre cladding being coated on the light fibre core.
A kind of 2. light wave detection device according to claim 1, it is characterised in that：The passing through of micro-nano bragg fiber
Learn the corrosion fibre cladding and light fibre core is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721253617.XU CN207317936U (en) | 2017-09-28 | 2017-09-28 | A kind of light wave detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721253617.XU CN207317936U (en) | 2017-09-28 | 2017-09-28 | A kind of light wave detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207317936U true CN207317936U (en) | 2018-05-04 |
Family
ID=62428004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721253617.XU Expired - Fee Related CN207317936U (en) | 2017-09-28 | 2017-09-28 | A kind of light wave detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207317936U (en) |
-
2017
- 2017-09-28 CN CN201721253617.XU patent/CN207317936U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180504 Termination date: 20180928 |
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| CF01 | Termination of patent right due to non-payment of annual fee |