Theoretical investigation of tunable pulse broadening cancellation via doublet Brillouin gain lines in an optical fiber

Tunable pulse broadening cancellation via doublet Brillouin gain lines in a silica fiber was theoretically investigated. Minimum broadening factor of 0.96 with time delay of 134.5 ps is achieved by optimizing doublet Brillouin lines for 200 ps Gaussian pulse with pulse distortion. Frequency separation between two gain lines and spectrum bandwidth of single gain line and peak gain values are optimized and considered in the present paper.