The effect of pump or Stokes field polarization-state changes on Brillouin gain is investigated in standard (non-polarization-maintaining) single-mode fibers with a modal birefringence of ~10−7. The Brillouin gain change due to polarization azimuth variation of the input pump or Stokes field reaches ±31% of the average gain expected for a completely scrambled polarization state. This polarization effect on the Brillouin gain may lead to cross-talk fluctuation in bidirectional coherent transmission systems and to degradation of Brillouin amplifier performance.
© 1989 Optical Society of America
Original Manuscript: June 22, 1988
Manuscript Accepted: January 11, 1989
Published: March 15, 1989
T. Horiguchi, N. Shibata, Y. Azuma, and M. Tateda, "Brillouin gain variation due to a polarization-state change of the pump or Stokes fields in standard single-mode fibers," Opt. Lett. 14, 329-331 (1989)