Patent ID: 8496376

Claim:
A method of auto-correcting a temperature measurement using a fiber optic distributed temperature sensor system comprising the steps of: a. injecting primary light energy into a sensing fiber of the fiber optic distributed temperature sensor system using a primary light source; b. collecting back-scattered light energy at the Raman anti-Stokes wavelength of the primary light energy and measuring its intensity; c. injecting secondary light energy into the sensing fiber of the fiber optic distributed temperature sensor system at the Raman anti-Stokes wavelength of the primary light energy using a secondary light source; d. collecting back-scattered light energy at the Raman Stokes wavelength of the secondary light energy and measuring its intensity; and e. autocorrecting the temperature measurement using the back-scattered anti-Stokes signal intensity of the primary light energy and the back-scattered Stokes signal intensity of the secondary light energy.