Performance of Brillouin Optical Time Domain Reflectometry with a Reference Brillouin Ring Laser

Abstract

A Brillouin optical time domain reflectometry (BOTDR) with the reference Brillouin laser for distributed measurement over long range fiber is experimentally demonstrated. A passive configuration using Mach- Zehnder interferometer is used to eliminate the polarization noise in the BOTDR. Experimental results show that the new system can effectively reduce the polarization noise. The Brillouin frequency shift induced by heated can be accurately detected by the BOTDR over 53km, and the temperature measurement error is lessthan 1.00C.