Abstract
We propose and demonstrate optical hexadecimal coding/decoding of 16-QAM using degenerate four-wave mixing (FWM) in highly nonlinear fibers (HNLFs). Constellation manipulation for variable coding/decoding of a 10-Gbaud/s 16-QAM signal is implemented with an OSNR penalty of <1.1 dB with CW pump and <1.2 dB with phase-modulated pump Key.
© 2011 Optical Society of America
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