Title :
Enabling complex modulation using the frequency chirp of directly modulated lasers
Author :
Di Che;Qian Hu;Feng Yuan;William Shieh
Author_Institution :
National ICT Australia - Victoria Research Laboratory
Abstract :
We demonstrate the first complex modulation and detection of PAM-4 and PAM-8 using a directly modulated laser with frequency chirp. Through coherent detection and differential phase assisted Viterbi decoding, PAM-4 system shows >9-dB OSNR sensitivity advantage over the intensity-only decision.
Keywords :
"Chirp","Optical transmitters","Digital signal processing","Optical receivers","Frequency modulation","Coherence"
Conference_Titel :
Optical Communication (ECOC), 2015 European Conference on
DOI :
10.1109/ECOC.2015.7341666
