1. [1] J. Yu, X. Zhou, M.F. Huang, Y. Shao, D. Qian, T. Wang, M. Cvijetic, P. Magill, L. Nelson, M. Birk, S. Ten, H.B. Matthew, and S.K. Mishra, “17Tb/s (161×114Gb/s) PolMux-RZ-8PSK transmission over 662km of ultra-low-loss fiber using C-band EDFA amplification and digital coherent detection,” Proc. Europ. Conf. Optical Communications, Th3.E.2, 2008.
2. [2] N. Kikuchi, K. Mandai, K. Sekine, and S. Sasaki, “First experimental demonstration of single-polarization 50-Gbit/s 32-level (QASK and 8-DPSK) incoherent optical multilevel transmission,” Proc. Conf. Optical Fiber Communications, PDP21, 2007.
3. Carrier synchronization for 3- and 4-bit-per-symbol optical transmission
4. 20 Msymbol∕s, 64 and 128 QAM coherent optical transmission over 525 km using heterodyne detection with frequency-stabilised laser
5. [5] M. Nakamura, Y. Kamio, and T. Miyazaki, “Linewidth-tolerant 10-Gbit/s 16 QAM transmission using a pilot-carrier based phase-noise canceling technique,” Opt. Express, vol.16, pp.10611-10616, 2007.