The performance of coherent polarization- multiplexed optical systems is evaluated in the presence of polarization-dependent loss (PDL) for linear and maximum- likelihood receivers and lumped noise at the receiver. The boundaries of PDL mitigation methods are discussed.
Kuschnerov, M., Chouayakh, M., Piyawanno, K., Spinnler, B., Alfiad, M. S., Napoli, A., & Lankl, B. (2010). On the performance of coherent systems in presence of polarization-dependent loss for linear and maximum likelihood receivers. IEEE Photonics Technology Letters, 22(12), 920-922. https://doi.org/10.1109/LPT.2010.2047717