Nonlinear Equalizer Based on Absolute Operation for IM/DD System Using DML Yu, Yukui ; Choi, Myeong Ryeol ; Bo, Tianwai ; Che, Yi ; Kim, Daeho ; Kim, Hoon Abstract Publication: IEEE Photonics Technology Letters Pub Date: April 2020 DOI: 10.1109/LPT.2020.2978222 Bibcode: 2020IPTL...32..426Y