Polarization attributes of stimulated Brillouin scattering slow light in fiber

Avi Zadok; Avishay Eyal; Moshe Tur; Luc Thevenaz

doi:10.1117/12.880790

17 February 2011 Polarization attributes of stimulated Brillouin scattering slow light in fiber

Avi Zadok, Avishay Eyal, Moshe Tur, Luc Thevenaz

Proceedings Volume 7949, Advances in Slow and Fast Light IV; 79490A (2011) https://doi.org/10.1117/12.880790
Event: SPIE OPTO, 2011, San Francisco, California, United States

Abstract

The polarization-related properties of stimulated Brillouin scattering (SBS) processes in long, randomly birefringent, standard optical fibers are examined. Evolution equations for the pump and signal waves, in the presence of both birefringence and SBS, are provided in Jones and Stokes spaces. It is shown that in the undepleted pump regime, the amplification of the SBS signal wave is equivalent to that of a linear medium with polarization-dependent gain. The process is associated with a pair of orthogonal states of polarizations (SOPs) of the signal wave, which undergo maximum and minimum amplification. In long, standard fibers, the Jones vector of the probe SOP which corresponds to maximum amplification is aligned with the complex conjugate of the pump wave Jones vector. The maximum and minimum SBS gain coefficients in such fibers equal two-thirds and one-third of the gain coefficient that is predicted by scalar theory, respectively. The large differential gain of the SBS process gives rise to an effective pulling of the amplified Stokes probe wave SOP, towards that of maximum amplification. Lastly, Stokes wave pulses that are aligned for maximum and minimum amplification experience different group delays, which manifest as polarization-related distortions in SBS slow light setups.

Citation Download Citation

Avi Zadok, Avishay Eyal, Moshe Tur, and Luc Thevenaz "Polarization attributes of stimulated Brillouin scattering slow light in fiber", Proc. SPIE 7949, Advances in Slow and Fast Light IV, 79490A (17 February 2011); https://doi.org/10.1117/12.880790

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