Plasma resonance tilted fiber grating sensor, detection system and method

A technology of tilted fiber grating and plasmon resonance, which is applied in gas detection and liquid fields, can solve problems such as limitations and inability to realize gas detection, and achieve high-precision measurement results

Active Publication Date: 2019-09-17
JINAN UNIVERSITY
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Problems solved by technology

However, due to the limitations of grating writing efficiency and sensing mode, SPR sensors based on tilted gratings are only sensitive to samples in liquid environments (refractive index about 1.33-1.45), and cannot detect gases (refractive index is about 1.0RIU). To some extent, it limits the wider application of this technology

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  • Plasma resonance tilted fiber grating sensor, detection system and method
  • Plasma resonance tilted fiber grating sensor, detection system and method
  • Plasma resonance tilted fiber grating sensor, detection system and method

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Embodiment 1

[0053] Such as figure 1 As shown, the present embodiment provides a plasmon resonance tilted fiber grating detection system, the system includes a light source 1, a polarizer 2, a polarization controller 3, a plasmon resonance (SPR) tilted fiber grating sensor 4, a photoelectric (PD ) detector 5, oscilloscope 6 and sound field signal source, described sound field signal source comprises loudspeaker 7, audio frequency amplifier 8 and signal generator 9, described light source 1, polarizer 2, polarization controller 3, plasmon resonance The tilted fiber grating sensor 4, photodetector 5 and oscilloscope 6 are connected in sequence, and the loudspeaker 7, audio amplifier 8 and signal generator 9 are connected in sequence.

[0054] Such as figure 1 with figure 2 As shown, the plasmon resonance tilted fiber grating sensor 4 includes an optical fiber engraved with a tilted fiber grating 10, the outer surface of the fiber cladding is coated with a nanometer-scale metal film 11, an...

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Abstract

The invention discloses a plasma resonance inclined fiber bragg grating sensor and a detection system and method. The system comprises a light source, a polarizer, a polarizing controller, a plasma resonance inclined fiber bragg grating sensor, a photoelectric detector, an oscilloscope and a sound field signal source. The light source, the polarizer, the plasma resonance inclined fiber bragg grating sensor, the photoelectric detector and the oscilloscope are successively connected. The sensor comprises an optical fiber engraved with an inclined fiber bragg grating, a nanometer level metal film is plated to the outer surface of the optical fiber coating, the angle of the inclined fiber bragg grating is greater than 30 degrees, and a lot of pectiniform cladding modes with effective refractive index coverage of 0.9-1.45RIU and corresponding plasma resonance wave excitation. The system can realize dynamic and static high-precision detection of various media of covered gas and liquids and the refractive index measuring precision can reach 10<-8>RIU.

Description

technical field [0001] The invention relates to a sensor, a detection system and a method, in particular to a plasma resonance inclined fiber grating sensor, a detection system and a method, and belongs to the field of liquid and gas detection. Background technique [0002] Since the mid-20th century, bioinformatics has developed rapidly, and various biological and gas sensing technologies have also been developed accordingly. In 1982, after Liedberg et al. reported on the detection of gas and biological samples by the surface plasmon resonance tilted fiber grating sensor, it has the characteristics of convenient and rapid detection process, no need for labeling, real-time monitoring, and high precision. Surface plasmon resonance Tilted fiber grating sensors are widely used in the field of sensing. [0003] Plasma, also known as plasma, is an ionized gaseous substance composed of atoms deprived of some electrons and negative electrons generated after atoms are ionized. Whe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/41G01N21/552
Inventor 郭团刘甫关柏鸥
Owner JINAN UNIVERSITY
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