AI Article Synopsis
- - A new dual-parameter sensor is developed using a hollow core Bragg fiber filled with magnetic fluid, combined with single-mode fiber sections, to measure both magnetic field intensity and temperature simultaneously.
- - The sensor leverages a specific relationship between resonant dips in its transmission spectrum and anti-resonant modes, enabling it to detect shifts due to changes in magnetic fields and temperature.
- - Experimental results indicate high sensitivities, with 86.43 pm/mT for magnetic fields (0-12 mT) and 17.8 pm/℃ for temperatures (20-60 ℃), highlighting its compact design, low cost, and potential for use in complex sensing environments.
Article Abstract
A simple and compact magnetic field and temperature dual-parameter sensor is proposed, which is based on a sandwich structure consisting of a section of hollow core Bragg fiber (HCBF) filled with magnetic fluid (MF) and two sections of single-mode fiber (SMF). The corresponding relationship between the resonant dip with different periods in the transmission spectrum and specific anti-resonant (AR) mode in the HCBF is determined. The resonant dips based on different AR modes shift differently when the magnetic field intensity and temperature change. Then, the simultaneous measurement of the magnetic field intensity and temperature can be achieved by utilizing a cross matrix. The experimental results show that the maximum magnetic field sensitivity in the range of 0-12 mT is 86.43 pm/mT, and the maximum temperature sensitivity in the range of 20-60 ℃ is 17.8 pm/℃. The proposed sensor has the advantages of compact structure, easy fabrication and low cost, thus, it has great potential applications in the field of simultaneous sensing of magnetic field intensity and temperature in complex environments.
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| http://dx.doi.org/10.1364/OE.439444 | DOI Listing |
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