Empirical Mode Decomposition-Based Detection of Bend-Induced Error and Its Correction in a Raman Optical Fiber Distributed Temperature Sensor

The calibration of Raman scattering-based optical fiber distributed temperature sensor (OFDTS) is performed using temperature of the integrated reference (calibration) loop located at the start of the sensing fiber. OFDTS measures distributed temperature profile assuming that sensing fiber is free from any discontinuity, so that anti-Stokes (AS) and Stokes (St) lights have uniform decay. However, ...