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Temperature-insensitive intensity-modulation liquid refractive index sensor based on fiber-optic Michelson probe structure

  • Chen Zheng , Wenlin Feng EMAIL logo , Xiaozhan Yang , Guojia Huang , Lian Wang and Bangxing Li
Published/Copyright: May 21, 2021
Zeitschrift für Naturforschung A
From the journal Zeitschrift für Naturforschung A Volume 76 Issue 8

Abstract

A novel liquid refractive index sensor based on the connected single-mode fiber (SMF), no-core fiber (NCF), four-core fiber (FCF), and silver mirror (SM) to form an SMF–NCF–FCF–SM Michelson probe structure is proposed and fabricated. The change of light field in the probe structure has been simulated by the light-beam propagation method. The theoretical results show that light is excited in the NCF and couples into the cores and cladding of FCF at the junction of NCF and FCF. The interference fringes are generated between the cladding modes and core modes of FCF. The sensitivities of the probe in NaCl, sucrose, and glycerol are 171.75 dB/RIU, 121.41 dB/RIU, and 207.50 dB/RIU, respectively. The temperature sensitivity is 0.05 nm/°C, and the intensity change of temperature (≤0.046 dB/°C) is very small and has little effect on the liquid refractive index. Thus, the cross-sensitivity of temperature for the liquid refractive index can be removed. The proposed probe structure has the advantages of easy fabrication, good stability, and linear response, having potential application in the liquid refractive index monitoring environments.

Keywords: fiber-optic sensor; four-core fiber; Michelson interference; no-core fiber; refractive index
Corresponding author: Wenlin Feng, College of Science, Chongqing University of Technology, Chongqing400054, China; and Chongqing Key Laboratory of Green Energy Materials Technology and Systems, Chongqing400054, China, E-mail:

  1. Author contribution: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: The research was supported by the National Natural Science Foundation of China (No. 51574054), Chongqing Municipal Education Commission (Nos. KJZD-M201901102 and KJQN201801133), Chongqing Science and Technology Bureau (Nos. cstc2018jcyjAX0294 and CSTCCXLJRC201905), and Guangzhou Science and Technology Bureau (No. 20202030053).

  3. Conflict of interest statement: The authors declare no conflicts of interest.

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Received: 2021-04-12
Revised: 2021-05-03
Accepted: 2021-05-04
Published Online: 2021-05-21
Published in Print: 2021-08-26

© 2021 Walter de Gruyter GmbH, Berlin/Boston

Articles in the same Issue

  1. Frontmatter
  2. General
  3. Temperature-insensitive intensity-modulation liquid refractive index sensor based on fiber-optic Michelson probe structure
  4. Dynamical Systems & Nonlinear Phenomena
  5. Impact of non-thermal electrons on spatial damping: a kinetic model for the parallel propagating modes
  6. Role of entropy in ηi-mode driven nonlinear structures obtained by homotopy perturbation method in electron–positron–ion plasma
  7. Study of ferrofluid flow and heat transfer between cone and disk
  8. Solid State Physics & Materials Science
  9. Structural, electronic, magnetic and mechanical properties of the full-Heusler compounds Ni2Mn(Ge,Sn) and Mn2NiGe
  10. Exothermic behaviour of aluminium and graphene as a fuel in Fe2O3 based nanothermite
  11. Surface levels of organic conductors in a tilted in-plane magnetic field
  12. Thermodynamics & Statistical Physics
  13. Adiabatic compressibility of biphasic salt melts
  14. Stochastic thermodynamics of a finite quantum system coupled to a heat bath
https://doi.org/10.1515/zna-2021-0094
Keywords for this article
fiber-optic sensor; four-core fiber; Michelson interference; no-core fiber; refractive index

Articles in the same Issue

  1. Frontmatter
  2. General
  3. Temperature-insensitive intensity-modulation liquid refractive index sensor based on fiber-optic Michelson probe structure
  4. Dynamical Systems & Nonlinear Phenomena
  5. Impact of non-thermal electrons on spatial damping: a kinetic model for the parallel propagating modes
  6. Role of entropy in ηi-mode driven nonlinear structures obtained by homotopy perturbation method in electron–positron–ion plasma
  7. Study of ferrofluid flow and heat transfer between cone and disk
  8. Solid State Physics & Materials Science
  9. Structural, electronic, magnetic and mechanical properties of the full-Heusler compounds Ni2Mn(Ge,Sn) and Mn2NiGe
  10. Exothermic behaviour of aluminium and graphene as a fuel in Fe2O3 based nanothermite
  11. Surface levels of organic conductors in a tilted in-plane magnetic field
  12. Thermodynamics & Statistical Physics
  13. Adiabatic compressibility of biphasic salt melts
  14. Stochastic thermodynamics of a finite quantum system coupled to a heat bath
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