CN112462155A - Optical fiber electric field detection device - Google Patents
Optical fiber electric field detection device Download PDFInfo
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- CN112462155A CN112462155A CN202011265669.5A CN202011265669A CN112462155A CN 112462155 A CN112462155 A CN 112462155A CN 202011265669 A CN202011265669 A CN 202011265669A CN 112462155 A CN112462155 A CN 112462155A
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- electric field
- optical fiber
- conjugated polymer
- polymer material
- core
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/12—Measuring electrostatic fields or voltage-potential
Abstract
The invention provides an optical fiber electric field detection device which comprises a heating part, a fiber core and an organic conjugated polymer material, wherein the fiber core is arranged on the heating part, a hole is formed in the fiber core and is positioned at the top of the heating part, and the hole is filled with the organic conjugated polymer material. The invention has the advantage of high electric field detection sensitivity.
Description
Technical Field
The invention relates to the field of electric field detection, in particular to an optical fiber electric field detection device.
Background
The measurement of the electric field has great significance for launching missiles, rockets and aircrafts, and also has wide application in places which are easy to cause static electricity and are easy to be damaged by static electricity and radars on the ground, such as urban environmental pollution, ultra-clean laboratories, oil refineries, oil storage stations and the like. The traditional electric field measuring device has low sensitivity, and the exploration of an electric field detection technology based on a new principle has important significance for improving the sensitivity of electric field measurement.
Disclosure of Invention
In order to solve the above problems, the present invention provides an optical fiber electric field detection device, which includes a heating portion, a fiber core, and an organic conjugated polymer material, wherein the fiber core is disposed on the heating portion, a hole is disposed in the fiber core, the hole is located at the top of the heating portion, and the hole is filled with the organic conjugated polymer material.
Further, the organic conjugated polymer material is poly-3-hexylthiophene.
Further, the core size is less than 1 micron.
Further, the hole penetrates the core.
Further, the holes are rectangular.
Further, the long side of the rectangle is along the core direction.
Further, the rectangle is inclined with respect to the direction of the core.
Furthermore, a noble metal material is arranged on the side wall of the hole, and the organic conjugated polymer material fills the space surrounded by the noble metal material.
Further, the noble metal material is gold or silver.
Still further, the noble metal material has a thickness of less than 20 nanometers.
The invention has the beneficial effects that: the invention provides an optical fiber electric field detection device which comprises a heating part, a fiber core and an organic conjugated polymer material, wherein the fiber core is arranged on the heating part, a hole is formed in the fiber core and is positioned at the top of the heating part, and the hole is filled with the organic conjugated polymer material. When the method is applied, firstly, the transmission characteristic of the fiber core is measured in a space without an electric field, and the heating part is at normal temperature; then, the invention is placed in an electric field to be tested, meanwhile, the heating part heats the organic conjugated polymer material, after the organic conjugated polymer material is heated for a period of time, the organic conjugated polymer material is cooled, the transmission characteristic of the fiber core is measured again, and the electric field to be tested is determined according to the change of the transmission characteristics of the front fiber core and the rear fiber core. In the heating process, the electric field to be measured changes the direction of the molecular chain of the organic conjugated polymer material, so that the dielectric environment in the hole is changed, and the transmission characteristic of the fiber core is changed. The invention has the advantage of high electric field detection sensitivity because the direction of the molecular chain of the organic conjugated polymer material is heavily dependent on the electric field in which the organic conjugated polymer material is positioned during heating, and the transmission characteristic of the fiber core is heavily dependent on the dielectric environment in the hole.
The present invention will be described in further detail below with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of an optical fiber electric field detection device.
FIG. 2 is a schematic view of another optical fiber electric field detection device.
FIG. 3 is a schematic diagram of another optical fiber electric field detection device.
In the figure: 1. a heating section; 2. a fiber core; 3. a hole; 4. a noble metal material.
Detailed Description
To further explain the technical means and effects of the present invention adopted to achieve the intended purpose, the following detailed description of the embodiments, structural features and effects of the present invention will be made with reference to the accompanying drawings and examples.
Example 1
The invention provides an optical fiber electric field detection device. As shown in fig. 1, the optical fiber electric field detection device includes a heating portion 1, a fiber core 2, and an organic conjugated polymer material. The core 2 is placed on the heating portion 1. The heating part 1 may generate a high temperature by a method of connecting other high temperature objects, or may generate a high temperature by generating heat through a resistance, and is not particularly limited herein. The size of the core 2 is less than 1 micron, that is to say the diameter of the core 2 is less than 1 micron. The fiber core 2 is provided with a hole 3. The shape of the hole 3 is rectangular, and the long side direction of the rectangle is along the direction of the fiber core 2. In addition, the shape of the hole 3 may be circular, and the diameter of the circle is larger than one half of the diameter of the fiber core 2, so as to enhance the influence of the hole 3 on the transmission characteristic of the fiber core 2. The hole 3 penetrates the core 2. Further, the hole 3 is located at the top of the heating part 1. The organic conjugated polymer material fills the pores 3. That is, the hole 3 is disposed on the heating part 1, so that the heating part 1 can better heat the organic conjugated polymer material in the hole 3. Specifically, the organic conjugated polymer material is poly-3-hexylthiophene. When the electric field is heated, the micro appearance of the poly-3-hexylthiophene is easier to be regulated and controlled by the electric field to be measured.
In application, first, the transmission characteristics of the core 2 are measured in an electric field-free space, and the heating portion 1 is at room temperature. Specifically, the light source emits continuous spectrum laser, the continuous spectrum laser is coupled into one end of the fiber core 2, and the other end of the fiber core 2 is provided with the optical detector to detect the transmission spectrum of the fiber core 2, so that the transmission characteristic of the fiber core 2 is determined; then, the invention is placed in an electric field to be tested, the heating part 1 heats the organic conjugated polymer material at the same time, after the organic conjugated polymer material is heated for a period of time, the organic conjugated polymer material is cooled, the transmission characteristic of the fiber core 2 is measured again, and the electric field to be tested is determined according to the change of the transmission characteristics of the front and the back fiber cores 2. The heating is carried out at a temperature greater than 130 degrees celsius for a time greater than 30 minutes to facilitate sufficient modification of the microstructure of the organic conjugated polymer material. In the heating process, the electric field to be measured changes the direction of the molecular chain of the organic conjugated polymer material, so that the dielectric environment in the hole 3 is changed, and the transmission characteristic of the fiber core 2 is changed. Since the direction of the molecular chain of the organic conjugated polymer material is heavily dependent on the electric field in which the organic conjugated polymer material is exposed during heating, and the transmission characteristic of the fiber core 2 is heavily dependent on the dielectric environment in the hole 3, the present invention has the advantage of high electric field detection sensitivity.
Example 2
In example 1, as shown in fig. 2, the holes 3 are rectangular. The long side of the rectangle is along the direction of the fiber core 2. The side wall of the hole 3 is provided with a noble metal material 4, and the organic conjugated polymer material fills the space surrounded by the noble metal material 4. The noble metal material 4 is gold or silver. That is, the noble metal material 4 is attached to the wall of the hole 3, and the organic conjugated polymer material is further provided inside the noble metal material 4. Under the excitation of light in the fiber core 2, the noble metal material 4 can generate surface plasmons, a strong electric field is generated near the noble metal material 4, and when the direction of a molecular chain of the organic conjugated polymer material is changed, the surface plasmon resonance of the noble metal material 4 is changed, so that the transmission characteristic of the fiber core 2 is changed greatly, and the electric field detection with higher sensitivity is realized.
Further, the noble metal material 4 is a noble metal thin film, and the thickness of the noble metal thin film is less than 20 nanometers. Therefore, the noble metal film not only can generate surface plasmon resonance, but also has good heat conduction effect, and when the heating part 1 is used for heating, the heat can be better transferred to the organic conjugated polymer material, so that the molecular chain direction of the organic conjugated polymer material can be better changed, the transmission characteristic of the fiber core 2 can be more changed, and the electric field detection with higher sensitivity can be realized.
Example 3
In example 2, as shown in fig. 3, the rectangle is inclined with respect to the direction of the core 2. That is, the long side of the rectangle is not parallel to the direction of the core 2. The holes 3 concentrate the energy propagating in the core 2 to a smaller cross-sectional size within the core 2. Therefore, the change of the molecular chain direction of the organic conjugated polymer material in the hole 3 greatly changes the transmission characteristic of the fiber core 2, and the electric field detection with higher sensitivity is realized.
Further, the noble metal material 4 is noble metal particles having a size of less than 20 nm. Therefore, the contact area between the organic conjugated polymer material and the noble metal particles is larger, and when the molecular chain direction of the organic conjugated polymer material changes, namely the effective refractive index of the organic conjugated polymer material changes, the surface plasmon resonance of the noble metal particles changes more, so that the transmission characteristic of the fiber core 2 is changed more, and the electric field detection with higher sensitivity is realized.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (10)
1. The optical fiber electric field detection device is characterized by comprising a heating part, a fiber core and an organic conjugated polymer material, wherein the fiber core is arranged on the heating part, a hole is formed in the fiber core and is positioned at the top of the heating part, and the hole is filled with the organic conjugated polymer material.
2. The optical fiber electric field detecting device according to claim 1, wherein: the organic conjugated polymer material is poly-3-hexylthiophene.
3. The optical fiber electric field detecting device according to claim 2, wherein: the core has a size of less than 1 micron.
4. The optical fiber electric field detecting device according to claim 3, wherein: the hole penetrates through the fiber core.
5. The optical fiber electric field detecting device according to claim 4, wherein: the holes are rectangular.
6. The optical fiber electric field detecting device according to claim 5, wherein: the long side of the rectangle is along the fiber core direction.
7. The optical fiber electric field detecting device according to claim 5, wherein: the rectangle is inclined with respect to the direction of the core.
8. The optical fiber electric field detecting device according to any one of claims 1 to 7, wherein: and a precious metal material is arranged on the side wall of the hole, and the organic conjugated polymer material fills a space surrounded by the precious metal material.
9. The optical fiber electric field detecting device according to claim 8, wherein: the noble metal material is gold or silver.
10. The optical fiber electric field detecting device according to claim 9, wherein: the noble metal material has a thickness of less than 20 nanometers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011265669.5A CN112462155A (en) | 2020-11-13 | 2020-11-13 | Optical fiber electric field detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011265669.5A CN112462155A (en) | 2020-11-13 | 2020-11-13 | Optical fiber electric field detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112462155A true CN112462155A (en) | 2021-03-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011265669.5A Withdrawn CN112462155A (en) | 2020-11-13 | 2020-11-13 | Optical fiber electric field detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112462155A (en) |
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2020
- 2020-11-13 CN CN202011265669.5A patent/CN112462155A/en not_active Withdrawn
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Application publication date: 20210309 |
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