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Virtually Isotropic Transmission Media With Fiber Raman Amplifier

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3 Author(s)
Sergey Sergeyev ; Optics Research Group, Waterford Institute of Technology, Waterford, Ireland ; Sergei Popov ; Ari T. Friberg

We report a theoretical study and simulations of a novel fiber-spin tailoring technique to suppress the polarization impairments, namely polarization mode dispersion and polarization dependent gain (PDG), in fiber Raman amplifiers. Whereas use of depolarizer or multiplexing pump laser diodes with a final degree of pump polarization of 1% for periodically spun fiber results in PDG of about 0.3 dB, we demonstrate that application of just a two-section fiber (where the first part is short and has no spin, and the second one is periodically spun) can reduce the PDG to as low as below 0.1 dB.

Published in:

IEEE Journal of Quantum Electronics  (Volume:46 ,  Issue: 10 )