Title :
Generation and Detection of a 56 Gb/s Signal Using a DML and Half-Cycle 16-QAM Nyquist-SCM
Author :
Karar, A.S. ; Cartledge, J.C.
Author_Institution :
Department of Electrical and Computer Engineering, Queen´´s University, Kingston, Canada
Abstract :
A 16-QAM signal is generated using subcarrier modulation with a subcarrier frequency of half the symbol rate, Nyquist pulse shaping, and a directly modulated passive feedback laser at bit rates of 14, 28, and 56 Gb/s. Using polarization multiplexing emulation, a pre-amplified direct detection receiver and digital signal processing, loss margins of 12.6 and 8 dB are achieved for a 112 Gb/s dual polarization signal at back-to-back and after 4 km transmission, respectively.
Keywords :
Bandwidth; Optical feedback; Optical modulation; Optical polarization; Optical pulse shaping; Optical transmitters; Digital signal processing; digital-to-analog conversion; intensity modulation; semiconductor laser;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2013.2249059
