Hybrid structure interferometer sensor for three-parameter measurement

A hybrid structure and interferometer technology, applied in the direction of converting sensor output, instruments, measuring devices, etc., can solve the problems of high price and complicated sensor manufacturing process, and achieve the effect of improving the sensitivity of the refractive index

Active Publication Date: 2020-07-14
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above sensors all suffer from some disadvantages such as complicated manufacturing process and high price.

Method used

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  • Hybrid structure interferometer sensor for three-parameter measurement
  • Hybrid structure interferometer sensor for three-parameter measurement
  • Hybrid structure interferometer sensor for three-parameter measurement

Examples

Experimental program
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Embodiment

[0021] like figure 1 As shown, a hybrid structure interferometer sensor for three-parameter measurement in this embodiment includes a first single-mode optical fiber 1, a coreless optical fiber microsphere cavity 2, a photonic crystal optical fiber 3 and a second single-mode optical fiber fused sequentially from left to right. Mode fiber4.

[0022] When making this embodiment, firstly, the first single-mode optical fiber 1 is cut flat and ready for use, and then the first single-mode optical fiber 1 and the coreless optical fiber are fused by using an optical fiber fusion splicer. After fusion splicing, keep the coreless fiber at a length of 200 microns, and perform two arc discharges on the end of the coreless fiber on the fusion splicer, so that the silica layer at the end of the coreless fiber is fused together to form a coreless fiber microsphere cavity 2 , the coreless fiber microsphere cavity 2 is filled with air. The contact surface of the core of the first single-mod...

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Abstract

The invention relates to a hybrid structure interferometer sensor for three-parameter measurement. The hybrid structure interferometer sensor comprises a first single-mode optical fiber, a coreless optical fiber microsphere cavity, a photonic crystal fiber and a second single-mode optical fiber which are sequentially welded from left to right. Through the coreless optical fiber microsphere cavityand the small section of photonic crystal fiber taper, the sensor not only has the function of a Fabry-Perot interferometer, but also has the function of a Mach-Zehnder interferometer. The interferometer sensor provided by the invention has the advantages of simple structure manufacturing, high sensitivity, good stability and the like. Meanwhile, the sensor can also measure three parameters of transverse pressure, temperature and refractive index.

Description

technical field [0001] The invention relates to a hybrid structure interferometer sensor for three-parameter measurement, in particular to a Fabry-Perot / Mach-Zehnder hybrid structure interferometer sensor for three-parameter measurement, which belongs to the field of optical fiber sensors. Background technique [0002] Optical fiber sensors have attracted much attention due to their advantages such as low transmission loss, corrosion resistance, large measurement dynamic range, small size, and anti-electromagnetic interference. And in harsh environments such as strong electromagnetic interference, fiber optic sensors have great advantages over traditional electrical sensors. Due to their unique advantages, they can measure various physical quantities, such as: temperature, refractive index, lateral pressure, strain, humidity and so on. Among them, the measurement of lateral pressure and refractive index becomes more and more important because they have very important applic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D5/353G01D21/02
CPCG01D5/35312G01D5/35329G01D21/02
Inventor 吴泳锋刘博吴婧赵立龙孙婷婷毛雅亚
Owner NANJING UNIV OF INFORMATION SCI & TECH
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