Abstract:The phase-retrieval method with delayed calibration is widely used in fiber-optic sensing structures to extract the distributed vibration messages. Yet, the performance of this method is not satisfactory when sudden changes are introduced in sensing path, for the DC compensation is not a slow variable under this situation. To improve the adjustment of interferometric fiber-optic structure, a self-tracking phase retrieval method is proposed. In the novel algorithm, the static state is tracked by calibrating DC … Show more
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