Thin-walled column symmetrical microcavity trace liquid phase concentration sensor

A concentration sensor, symmetrical technology, applied in the field of sensors, can solve the problems of repeatability, stable measurement speed improvement, etc., and achieve the effects of fast detection speed, high symmetry, and small size

Inactive Publication Date: 2018-11-13
NANJING UNIV OF POSTS & TELECOMM
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  • Thin-walled column symmetrical microcavity trace liquid phase concentration sensor
  • Thin-walled column symmetrical microcavity trace liquid phase concentration sensor
  • Thin-walled column symmetrical microcavity trace liquid phase concentration sensor

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[0028] Objects, advantages and features of the present invention will be illustrated and explained by the following non-limiting description of preferred embodiments. These embodiments are only typical examples of applying the technical solutions of the present invention, and all technical solutions formed by adopting equivalent replacements or equivalent transformations fall within the protection scope of the present invention.

[0029] The invention discloses a thin-wall column symmetrical microcavity micro-liquid phase concentration sensor, such as figure 1 As shown, the liquid phase concentration sensor includes a wavelength-tunable narrow-band light source 1 , a micro-nano optical fiber 2 , a thin-walled cylindrical symmetric microcavity 3 , a photodetector 4 and a feedback control unit 5 . The wavelength tunable narrowband light source 1, the micro-nano optical fiber 2, and the photodetector 4 are connected to each other through optical fiber fusion coupling, and the fee...

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Abstract

The invention discloses a thin-walled column symmetrical microcavity trace liquid phase concentration sensor. The liquid phase concentration sensor comprises a wavelength turnable narrow band light source, micro-nano optical fiber, a thin-walled column symmetrical microcavity, a photoelectric detector and a feedback control unit; the wavelength turnable narrow band light source, the micro-nano optical fiber and the photoelectric detector are in molten coupling connection through the optical fiber; the feedback control unit is electrically connected with the photoelectric detector and the wavelength turnable narrow band light source separately; and the micro-nano optical fiber maintains different surface vertical to the central axis of the thin-walled column symmetrical microcavity. The thin-walled column symmetrical microcavity serving as a sensing unit and a trace liquid phase channel, an echo wall type resonance effect and a microfluidic technology are combined, the interaction strength and time of a light field and a liquid phase sample are enhanced, and high-sensitivity and rapid detection of liquid phase concentration is realized.

Description

technical field [0001] The invention relates to a thin-wall column symmetrical microcavity micro-liquid phase concentration sensor, which can be used in the technical field of sensors. Background technique [0002] Liquid-phase concentration trace detection technology has important scientific significance for the research and development of modern industry, agriculture, medicine and other fields. Among them, the precise concentration detection technology represented by water salinity is widely used in marine fishery and other aquaculture, natural environment monitoring and governance, oceanography and earth climate research and prediction, mineral detection, industrial production and military applications, etc. aspects are of great importance. [0003] Currently common salinity measurement methods include: conductivity method, refractive index method, microwave remote sensing technology and surface plasmon resonance method, etc. Among them, the conductivity method needs to...

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Application Information

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IPC IPC(8): G01N9/24
CPCG01N9/24
Inventor 万洪丹周权曹涵赵玉浩陈瑶张祖兴
Owner NANJING UNIV OF POSTS & TELECOMM
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