期刊
OPTICS EXPRESS
卷 31, 期 20, 页码 32543-32553出版社
Optica Publishing Group
DOI: 10.1364/OE.500576
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An optical fiber sensor based on a hole-assisted dual-core fiber has been proposed for dual-parameter measurements, achieving simultaneous measurement of salinity and temperature. The sensor offers advantages of simplicity in fabrication, high integration, and potential applications in marine environment measurements.
An optical fiber sensor based on a hole-assisted dual-core fiber (HADCF) has been proposed and experimentally demonstrated for dual-parameter measurements. The dual-mode interferometer created uses the LP01 mode and LP11 mode in the suspended core of a specialist optical fiber, combined with a directional coupler formed by using the suspended core and the center core in a 16 mm long HADCF. Using this, the simultaneous measurement of salinity (due to the presence of NaCl) and temperature has been achieved through monitoring the interference dip and resonance dip. The sensitivities of the measurement of salinity and temperature are 190.7 pm/%0 and-188.2 pm/degrees C, respectively. The sensor developed has the advantages of simplicity of fabrication, a high level of integration and the potential for measurement of dual parameters, supporting its potential applications in marine environment measurements.(c) 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
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