Frequency chirp reducing of a colorless laser diode for 40-Gbit/s 256-QAM OFDM transmission

Abstract

A wavelength controlled and frequency chirp reduced colorless laser diode is directly modulated by 256-QAM-OFDM data to achieve a high spectral efficiency of 8 bit/sec/Hz at 40 Gbit/s with an optimized BER of 3.7×10-3. 

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