Abstract
DPSK, P-DPSK, RZ-DQPSK and coherent PDM-QPSK are compared over the same testbed by sending a 40Gb/s channel, either surrounded by 10Gb/s legacy or 40Gb/s channels. DPSK and P-DPSK are most the robust to nonlinear effects.
© 2009 Optical Society of America
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