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Pre-amplified 64-QAM-OFDM modulation of a colorless laser diode for 30 Gbit/s transmission with enhanced SNR

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Abstract

A directly-modulated colorless laser diode based pre-amplified 64-QAM-OFDM transmission at 30Gbit/s is demonstrated with optimized SNR of 21.6 dB and EVM of 8.3 % to provide spectral efficiency of 6 bit/sec/Hz and BER of <2.5×10−3.

© 2014 Optical Society of America

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