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Date of Publication:2022-10-10

Journal:光电子 激光

Volume:23

Issue:4

Page Number:649-653

ISSN No.:1005-0086

Abstract:Based on the principle of Michelson interferometer and the
   characteristics of fiber optic sensors,this paper has developed a novel
   single-mode core-offset fiber optic interferometer sensor,and uses it
   for the refractive index measurement in sugar solution.Experimental
   results show that when the sensing range is from 1.33 to 1.39,there will
   be a better progressive decrease relationship between the characteristic
   wavelength and the refractive index;the refractive index change of 0.01
   of the sucrose will lead to an approximate average variation of 0.12 nm
   in the characteristic wavelength.This sensor can be used for on-line
   liquid refractive index and concentration monitoring with simple
   structure and high sensitivity.

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