Abstract
AbstractA sensor based on 2 hollow core microspheres is proposed. Each microsphere was produced separately through fusion splicing and then joined. The resultant structure is a Fabry‐Perot interferometer with multiple interferences that can be approximated to a 4‐wave interferometer. Strain characterization was attained for a maximum of 1350 με, achieving a linear response with a sensitivity of 3.39 ± 0.04 pm/με. The fabrication technique, fast and with no chemical hazards, as opposed to other fabrication techniques, makes the proposed sensor a compelling solution for strain measurements in hash environments.
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