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近年来,分布式光纤传感由于其体小质轻、响应快、精度高、动态范围宽,具有抗电磁干扰、电绝缘和耐腐蚀性等优点,在许多领域得到了广泛的应用。目前光纤传感器已经可以探测到许多物理量,如温度、应力、位移、电流、加速度、电压等。分布式光纤振动传感器就是其中的一种,利用光波在光纤中传输时相位、偏振等对振动敏感的特性,连续实时地监测光纤
In recent years, distributed optical fiber sensing has been widely used in many fields due to its advantages of light weight, fast response, high precision, wide dynamic range, anti-electromagnetic interference, electrical insulation and corrosion resistance. At present, fiber optic sensors have been able to detect many physical quantities, such as temperature, stress, displacement, current, acceleration, voltage and so on. Distributed optical fiber vibration sensor is one of them, the use of light in the optical fiber transmission phase, polarization and other vibration-sensitive characteristics of continuous real-time monitoring of optical fiber