Abstract
A single-end fiber-optic vibration sensor based on an over-coupled fused-fiber loop reflector is demonstrated for the first time, which takes advantage of the change of the reflectivity spectrum when the coupling region is applied with a different strain. The interrogation system is designed for the sensor, and consists of a low-cost laser diode, a 3-dB fiber coupler, a detector, and an electronic circuit to the process signal. The output of the sensor system when the sensor is applied with vibration is shown. The system is simple and low cost, and, thus, feasible for practical use.
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Chang, J., Wang, Q., Zhang, X. et al. Single-end vibration sensor based on an over-coupled fiber-loop reflector. Laser Phys. 18, 452–454 (2008). https://doi.org/10.1134/S1054660X0804018X
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DOI: https://doi.org/10.1134/S1054660X0804018X