Optical reflectometer
OBR 4600 LUNA Innovations

Luna Technologies' Distributed Temperature and Strain Sensing Software, when combined with the Optical Backscatter Reflectometer™ (OBR), transforms your standard telecom-grade fiber into a high spatial-resolution strain and temperature sensor.

The OBR uses swept wavelength interferometry (SWI) to measure the Rayleigh backscatter as a function of length in optical fiber with high spatial resolution. An external stimulus (like a strain or temperature change) causes temporal and spectral shifts in the local Rayleigh backscatter pattern. The OBR measures these shifts and scales them to give a distributed temperature or strain measurement. The SWI approach enables robust and practical distributed temperature and strain measurements in standard fiber with centimeter-scale spatial resolution up to 70 meters of fiber with strain and temperature resolution as fine as 1 µstrain and 0.1 °C.