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Conferences > ECEOC > 2012 > Tu.4.A > Tu.4.A.4

DAC Enabled Spectrally Efficient CP-QPSK at 28Gbaud

T. Duthel, C. Raabe, P. Hermann, J. E. A. Whiteaway, J. C. Geyer, C. R. S Fludger, and T. Kupfer

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Abstract

We present channel spacing measurements on a 28Gbaud CP-QPSK transmitter applying Nyquist-like signal shaping without using optical filters. This is enabled by a single sample per symbol digital-to-analog converter in combination with strong analog electrical filtering. OSNR performance is evaluated against a commercial real-time receiver.

© 2012 Optical Society of America

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