Hybrid Polarization Pulling and Pushing Effects for Eliminating Brillouin Gain Fluctuation in Golay-Coded BOTDA Sensor

A scheme based on hybrid polarization pulling and pushing effects is utilized for eliminating Brillouin gain fluctuation in Golay-coded BOTDA sensor. Maximum Brillouin gain fluctuation is reduced from ∼ 0.31% to ∼ 0.04%.