Slope-Assisted Brillouin Optical Correlation-Domain Reflectometry: Proof of Concept

Abstract

Exploiting the slope of the Brillouin gain spectrum, we develop a new configuration of Brillouin optical correlation-domain reflectometry, which can measure strain (or temperature) and optical loss distributions simultaneously with a high sampling rate. The strain, temperature, and loss dependence coefficients of the output signal are measured to be 1.95 × 10-4 dB/με, 4.42 × 10-3 dB/K, and 0.191, respectively, which are consistent with the theoretical predictions. We also verify the basic operation of simultaneous measurement of the three parameters.

Keywords

• Brillouin scattering
• optical fiber sensors
• distributed measurement
• correlation-domain techniques