Digital PDL Compensation in 3D Stokes Space
Muga, N. J.
Pinto, A. N.
Journal of Lightwave Technology Vol. 31, Nº 13, pp. 2122 - 2130, July, 2013.
ISSN (print): 0733-8724
Scimago Journal Ranking: 1,62 (in 2013)
Digital Object Identifier: 10.1109/JLT.2013.2263849
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A Stokes space based technique for digital polarization-dependent losses (PDL) monitoring and compensation is proposed. The channel PDL monitoring is carried out with a resolution of 0.15~dB by computing the mean point of the signal samples represented in the three-dimensional Stokes space. The presented compensation technique is based on rotations and translations of the signal samples in the Stokes space, and provides a PDL compensation up to 2.5~dB. Error vector magnitude results show a gain of about 3~dB (assuming a PDL value equal to 1.5~dB) to a Stokes space based polarization demultiplexing technique without PDL compensation.