4.7 Article

An Asymmetrical Dual Sagnac Distributed Fiber Sensor for High Precision Localization Based on Time Delay Estimation

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Summary: The distributed fiber-optic sensor based on a hybrid configuration of dual-Sagnac interferometer utilizes a polarization compensation module to stabilize the polarization state for sensing, achieving a maximum sensing distance of 150 km with a positioning error within +/- 30 m. It is easy to install and suitable for long-distance security monitoring.

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