Optical fiber surface plasmon sensor based on plasmonic cavity
A sensor and plasma technology, used in instruments, scientific instruments, material analysis by optical means, etc., can solve the problems of high cost of fiber SPR sensor measurement process, complex structure and data processing, low intensity detection sensitivity, etc., to avoid wavelength The use of detection equipment, high resolution, and the effect of improving conversion efficiency
Active Publication Date: 2017-02-15
鞍山峰澜科技有限公司
View PDF8 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] In order to overcome the problems of high cost of optical fiber SPR sensor measurement process, complex structure and data processing, low intensity detection sensitivity and poor practicability, the present invention proposes a simple structure, high sensitivity intensity detection, and strong practicability based on plasma resonant cavity fiber optic surface plasmon sensor
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
[0016] The invention is further described below in conjunction with the accompanying drawings.
[0017] Such as figure 1 As shown, the optical fiber surface plasmon sensor based on plasmonic cavity, including broadband light source 1, optical isolator 2, polarization controller 3, 2×1 coupler 4, transmission fiber 5, fiber Bragg grating (FBG) 6, cone region A tapered optical fiber SPR sensor 7 coated with a gold film, a total reflection film 8 , a photodetector 9 , a data acquisition card (DAC) 10 , a PC 11 and a pulse modulator 12 . The output end of the broadband light source 1 is connected to the optical isolator 2, the output end of the optical isolator 2 is connected to the polarization controller 3, and one end of the two ports of the 2×1 coupler 4 is respectively connected to the output end of the polarization controller 3 and the photodetector Connected to the input end of the 2×1 coupler 4, one port of the 2×1 coupler 4 is connected to one end of the transmission fib...
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 |
|---|---|---|
| diameter | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
| diameter | aaaaa | aaaaa |
Login to View More
Abstract
The invention relates to a plasma resonance chamber-based fiber surface plasma sensor. The plasma resonance chamber-based fiber surface plasma sensor includes a broadband light source, an optical isolator, a polarization controller, a 2*1 coupler, a transmission fiber, a fiber Prague grating (FBG), a tapered fiber SPR sensor with the cone areas coated with gold films, a total reflection film, a photoelectric detector, a data acquisition card (DAC), a PC machine and a pulse modulator; the above plasma chamber is composed of the fiber Prague grating (FBG), the tapered fiber SPR sensor with the cone areas coated with the gold films, and the total reflection film, the tapered fiber cones of the gold coated films comprise a plasma generating region and an SPR sensing area, and P polarized lights oscillate back and forth in the chamber, so the SPR incidence rate of resonant wavelength is increased, and the detection sensitivity of the SPR coupling efficiency and intensity is improved; and the gold films of the SPR sensing area are coated with a specific film in order to realize the high sensitivity and strength detection of specific substances. The plasma resonance chamber-based fiber surface plasma sensor has the advantages of practicality, low cost, high sensitivity, and strength detection.
Description
technical field [0001] The invention belongs to the technical field of optical fiber sensing, in particular to an optical fiber surface plasmon sensor based on a plasma resonant cavity. Background technique [0002] Surface Plasmon Resonance (SPR) means that when the P-type polarized polychromatic light emitted by the light source passes through the interface between the thin film metal and the medium, if the incident angle is greater than the critical angle of total reflection, an electron concentration is formed on the surface. Due to the existence of the surface evanescent wave field and the complex refractive index of the metal, the light that satisfies the resonance wavelength is partially absorbed, and the light of the remaining wavelengths is reflected. [0003] In 1902, Wood discovered anomalous diffraction phenomenon in optical experiments; in 1968, German physicists Otto and Kretschmann each used the (Attenuated Total Reflection, ATR) method to realize the excitati...
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 Patents(China)
IPC IPC(8): G01N21/552G01N21/41
Inventor 赵春柳王小明董前民沈常宇
Owner 鞍山峰澜科技有限公司