TY - Front. Optoelectron. A1 - Xiang ZHOU T1 - Enabling technologies and challenges for transmission of 400 Gb/s signals in 50 GHz channel grid Y1 - 2013-03-05 JF - Frontiers of Optoelectronics JO - Front. Optoelectron. SP - 30 EP - 45 VL - 6 IS - 1 UR - https://journal.hep.com.cn/foe N1 - 10.1007/s12200-012-0298-2 ER -