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We report a novel fiber-optic hybrid-structured Fabry–Perot interferometer (HSFPI) based on large lateral offset splicing for simultaneous measurement of strain and temperature with advantages of high sensitivity, low cost, and easy fabrication. The high-strain sensitivity of 28.95 pm/μϵ and low-temperature sensitivity of 0.54 pm/°C are obtained for air cavity, and strain sensitivity of 28.95 pm/μϵ...
We propose a coupled add-drop ring resonator configuration for highly sensitive sensing. We theoretically examine the asymmetric Fano lineshapes of the two output ports of the proposed structure. The sharpness and the asymmetricity of the Fano resonance are linked to the high sensitivity. We theoretically calculate the sensitivity of the proposed coupled add-drop ring resonator as a sensor. The sensitivities...
A highly sensitive Mach-Zehnder(M-Z) interferometer coupled with nested fiber ring resonators is theoretically demonstrated. The experimental results show that the sensitivity of the interferometer is significantly enhanced by strong dispersive response of resonators and reach its maximum value at resonance, which agree well with theoretical predictions.
A sagnac-like interferometer is discussed. Its phase shift between the two counterpropagating light beams is realized by two outputs of a fiber-ring resonator. Calculation result shows this interferometer has an enhanced sensitivity.
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