The operating mechanism of OTDR-based spiral distributed fiber-optic sensor is analyzed and the fitting curve of macrobend optical loss versus shift and its relationship with the operating wavelength and spiral bar diameter obtained by experiments.The research results show that the sensor is characteristic of large monitoring range and highly accurate location and its monitoring range and performances can be further improved by optimizing its working wavelength and spiral bar size.
关键词
光纤通信分布式光纤传感光时域反射仪宏弯曲损耗
Keywords
fiber-optic communicationsdistributed fiber-optic sensorOTDRmacrobend loss