3D printed multicore fiber-tip discriminative sensor for magnetic field and temperature measurements

• DOI: 10.37188/lam.2024.018
• Publication Date: 2024-03-22T08:02:27Z
• Authors: Cong Xiong; Caoyuan Wang; Ruowei Yu; Wei Ji; Yu Qin; Yichun Shen; Wei Chen; Ai-Qun Liu; Limin Xiao
• Keywords: 3d printed; Multi-core processor

Miniaturized fiber-optic magnetic field sensors have attracted considerable interest owing to their superiorities in anti-electromagnetic interference and compactness.However, the intrinsic thermodynamic properties of material make temperature cross-sensitivity a challenging problem terms sensing accuracy reliability.In this study, an ultracompact multicore fiber (MCF) tip sensor was designed discriminatively measure temperature, which subsequently evaluated experimentally.The novel 3D printed component consists bowl-shaped microcantilever polymer microfluid-infiltrated microcavity on end-facet MCF, acting as two miniaturized Fabry-Perot interferometers.The sensitivity implemented by incorporating iron micro ball into microcantilever, enhanced capability highly sensitive sensing.Using tiny fiber-facet device channels MCF allows discriminative measurements determining coefficient matrix parameters.The exhibited high intensity sensitivity, approximately 1805.6 pm/mT with fast response time ~213 ms 160.3 pm/ ℃ .Moreover, had low condition number 11.28, indicating reliability two-parameter measurements.The proposed MCF-tip probes, detect multiple signals through within single fiber, can provide ultracompact, sensitive, reliable scheme for also provides useful platform microstructures functional materials, extending multi-parameter scenarios promoting application MCFs.