Near-infrared band-based double-peak PCF magnetic field and stress double-parameter sensing system
A sensing system, near-infrared technology, applied in measuring devices, material analysis through optical means, instruments, etc., can solve the problems of sensor sensitivity not reaching the theoretical eyeball, limited spectrometer, etc., to increase birefringence characteristics and dispersion characteristics, increase stability, and facilitate the effect of maintaining the polarization state
Pending Publication Date: 2022-05-27
HARBIN UNIV OF SCI & TECH
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Limited by the performance of the spectrometer, most PCF-SPR sensors currently only exist in simulation theory, and the sensitivity of the sensor in actual manufacturing often cannot reach the theoretical eyeball
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0033] The specific implementation of the near-infrared band bimodal PCF magnetic field and stress dual-parameter sensing system proposed by the present invention will be described below with reference to the accompanying drawings.
[0034] like figure 1 As shown, the present invention provides a device diagram of a near-infrared band bimodal PCF magnetic field and stress dual-parameter sensing system. The light source (1) emits an optical signal and transmits it to the sensing unit (3) through a single-mode optical fiber (1). When transmitted to the silver film (3-6), since the refractive index of the analysis solution (3-7) and the cladding layer (3-2) are inconsistent, a surface plasmon phenomenon occurs at the silver film (3-6), and the light appears Two confinement loss peaks. The sensing unit (3) is output to the spectrum analyzer (4) and the photoelectric converter (5), and the photoelectric converter (5) converts the optical signal into an electrical signal and output...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
| length | aaaaa | aaaaa |
Login to View More
Abstract
The invention provides a near-infrared band double-peak PCF magnetic field and stress double-parameter sensing device and method. The near-infrared band double-peak PCF magnetic field and stress double-parameter sensing device comprises a light source (1), a single-mode optical fiber (2), a sensing unit (3), a spectrum analyzer (4), a photoelectric converter (5), a signal processing module (6) and a computer (7). According to the surface plasma resonance principle, the magnetic field and the stress are detected through the distance between two formants of a photonic crystal fiber of a special structure, and the result is displayed in a computer. According to the invention, a traditional wavelength sensitivity calculation method is replaced by a bimodal sensitivity formula, and the proposed novel sensing device adopts a bimodal sensitivity sensing method, has the advantages of high sensitivity, flexible design, compact structure, strong stability and the like, and has extremely high use value in the fields of industrial application, medical treatment and public health, consumer electronics, science and technology research and development and the like.
Description
technical field [0001] The invention belongs to the technical field of optical fiber sensing, and in particular relates to a dual-parameter sensing system based on near-infrared waveband bimodal PCF magnetic field and stress. Background technique [0002] As one of the top ten technologies to be prioritized for development in the 21st century, sensing technology will develop in the direction of miniaturization, integration, multi-function and systematization in the future. Metal surface plasmons (SPs) can not only break the diffraction limit of traditional optics and realize light transmission at nanometer scales, but also are extremely sensitive to changes in the refractive index of surrounding dielectrics. Photonic crystal fibers (PCFs) have the advantages of light weight, small size, and resistance to electromagnetic interference. Therefore, the combination of metal surface plasmon resonance (SPR) technology and optical fiber technology provides a new research idea for r...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/359G01N21/552
CPCG01N21/359G01N21/553
Inventor 孙菲菲李堃沈涛陈文建
Owner HARBIN UNIV OF SCI & TECH