Optical fiber temperature distribution measuring device

摘要

An optical fiber temperature distribution measuring device measures a temperature distribution along an optical fiber by using backward Raman scattering light generated in the optical fiber. The device includes an arithmetic controller that changes a plurality of calibration parameters in conjunction with each other on the basis of a measured temperature value and a reference temperature value at a to-be-measured point, thereby converging a calibrated value of the measured temperature to a true value.