Spectrally-efficient 448-Gb/s dual-carrier PDM-16QAM channel in a 75-GHz grid

We improved 448-Gb/s dual-carrier PDM-16QAM spectral efficiency by using optical pre-filtering and RZ pulse-shaping, allowing it to operate in a 75-GHz WDM grid transmission system at 5.6-b/s/Hz without the use of Nyquist filtering or OFDM.

[1]  Simon Poole,et al.  Flexible and grid-less wavelength selective switch using LCOS technology , 2011, 2011 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference.

[2]  S. Savory,et al.  Pulse-shaping versus digital backpropagation in 224Gbit/s PDM-16QAM transmission. , 2011, Optics express.

[3]  Tetsuya Kawanishi,et al.  16 QAM synthesis by angular superposition of polarization using dual-polarization QPSK modulator , 2010, 36th European Conference and Exhibition on Optical Communication.

[4]  S. Chandrasekhar,et al.  Generation and 1,200-km transmission of 448-Gb/s ETDM 56-Gbaud PDM 16-QAM using a single I/Q modulator , 2010, 36th European Conference and Exhibition on Optical Communication.

[5]  P. Winzer,et al.  Capacity Limits of Optical Fiber Networks , 2010, Journal of Lightwave Technology.

[6]  Hideaki Tanaka,et al.  400-Gbit/s optical OFDM transmission over 80 km in 50-GHz frequency grid , 2010, 36th European Conference and Exhibition on Optical Communication.

[7]  Xiang Zhou,et al.  400G WDM Transmission on the 50 GHz Grid for Future Optical Networks , 2012, Journal of Lightwave Technology.

[8]  H. de Waardt,et al.  Transmission of 448-Gb/s dual-carrier POLMUX-16QAM over 1230 km with 5 flexi-grid ROADM passes , 2012, OFC/NFOEC.

[9]  Dirk van den Borne,et al.  Towards 400G and beyond: How to design the next generation of ultra-high capacity transmission systems , 2011, 16th Opto-Electronics and Communications Conference.