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2611344 
Journal Article 
A Novel Scheme to Generate 112.8-Gb/s PM-RZ-64QAM Optical Signal 
Yu, J; Zhou, X; Gupta, S; Huang, YueKai; Huang, MF 
2010 
Yes 
I E E E Photonics Technology Letters
ISSN: 1041-1135 
22 
2 
115-117 
WOS:000273566000007 
We propose and experimentally demonstrate a novel scheme to generate eight-level electrical signals for a high-speed 64 quadrature amplitude modulation (64QAM) optical signal. The required optical signal-to-noise ratio at a bit-error rate of 2 x 10(-3) for the single-(56.4 Gb/s) and dual-polarization (112.8 Gb/s) return-to-zero 64QAM is 21 and 26.5 dB, respectively. 
Digital coherent detection; eight-level electrical signal; polarization multiplexing (PDM); return-to-zero 64 quadrature amplitude modulation (RZ-64QAM); spectral efficiency