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Polarization-dependent loss and its effect on the signal-to-noise ratio in fiber-optic systems

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2 Author(s)
M. Shtaif ; Dept. of Phys. Electron, Tel-Aviv Univ., Israel ; A. Mecozzi

We study the effect of polarization-dependent loss (PDL) on the signal-to-noise ratio in fiber-optic systems. We show that in most cases of interest PDL-induced penalties result primarily from the coupling of noise generated with a polarization state orthogonal to that of the signal into the signals' state of polarization. This mechanism sets a limit to the improvement that can be expected to result from the periodic use of dynamic gain equalizers along the link.

Published in:

IEEE Photonics Technology Letters  (Volume:16 ,  Issue: 2 )