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In this paper, we review optical switching experiments of Nyquist superchannel with flexible bit rate. The various switching data capacities of 40,100 and 400-Gb/s are achieved by employing adaptive multi-level or hybrid quadrature amplitude modulation (QAM) formats. We aggregate superchannels with enough guard bands for optical superchannel switching with slight error vector magnitude (EVM) penalty...
We experimentally demonstrate reconfigurable optical add-drop multiplexer functionality with less than 0.5-dB error vector magnitude penalty in a Nyquist superchannel system based on single carrier frequency domain equalization with polarization division multiplexing 16 QAM format.
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