Optical fiber end face integrated fluorescence and absorption spectrum testing device for detection of water pollution

Abstract

The invention relates to an optical fiber end face integrated fluorescence and absorption spectrum testing device for the detection of water pollution, and belongs to the technical fields of spectroscopy application and environmental monitoring. An optical fiber end face integrated efficient optical feedback mirror and a preparation method thereof are provided. A method for designing a fluorescence and absorption spectrum testing microcavity structure in combination with the feedback mirror and for integrating with an end face of an optical fiber is further provided. The advantage of an optical fiber sensor is taken to integrate an excitation light source used for testing a fluorescence spectrum, a lighting source for testing an absorption spectrum, and a spectrum data acquisition functionon the end face of the optical fiber through a shunt optical fiber, and the optical fiber sensor is connected with the microcavity structure to form a sensor probe, therefore, the optical fiber sensing function based on the same probe is achieved. The device has the characteristics and advantages of integration of fluorescence emission and testing of the absorption spectrum on a single device, real-time field test, miniature integration of elements, and portable instruments and equipment.

Description

technical field [0001] The invention belongs to the technical fields of spectroscopy application and environmental monitoring. Using the advantages of optical fiber sensing technology, the fluorescence spectrum and absorption spectrum testing technology is applied to real-time / on-site monitoring of water quality and pollution evaluation. Background technique [0002] As a mature, stable and flexible optical waveguide material used in communication signal transmission and sensor technology, optical fiber not only has the ability to shield electromagnetic interference, but also has strong anti-corrosion and anti-interference functions for harsh environmental conditions. Especially in the water environment, not only can it maintain its excellent optical response characteristics, but it is not limited by the depth of the water body, the distribution width, and the complexity of the water environment. Therefore, optical fiber sensing technology is an ideal way to realize the eva...

AI Technical Summary

Problems solved by technology

However, at present, there are no optical fiber sensor technology methods and portable real-time and on-site detection instruments with the above functions and for water quality detection, as well as rapid evaluation methods

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