A 4x4 MIMO Equalizer for Polarization Crosstalk Cancellation in 160 Gb/s DP-QPSK/16QAM Coherent Optical Receivers. - Mohamed Saad Aly; Mohamed Osama Selim; Mostafa Gamal Ahmed; Ruhao Xia; Ahmed Hegazi; Sujay Sanjiv Patel; Mohamed Badr Younis; Mahmoud A. Khalil; Ahmed E. AbdelRahman; John Burns; Pavan Kumar Hanumolu (CICC, 2026)