Title :
Hybrid QAM transmission techniques for single-carrier ultra-dense WDM systems
Author :
Peng, Wei-Ren ; Morita, Itsuro ; Tanaka, Hideaki
Author_Institution :
KDDI R&D Labs. Inc., Fujimino, Japan
Abstract :
We demonstrate a hybrid QAM transmission technique for single-carrier ultra-dense wavelength division multiplexing (UD-WDM) systems. With 112-Gb/s per channel on 25-GHz grid, we found the hybrid 4 and 8QAM technique shows a much better performance than the pure 4QAM and exhibits an ~0.9-dB OSNR benefit over the pure 8QAM.
Keywords :
quadrature amplitude modulation; wavelength division multiplexing; 8QAM technique; UD-WDM; bit rate 112 Gbit/s; frequency 25 GHz; hybrid 4QAM technique; hybrid QAM transmission techniques; single-carrier ultradense wavelength division multiplexing; Optical distortion; Optical noise; Optical sensors; Quadrature amplitude modulation; Signal to noise ratio; Wavelength division multiplexing;
Conference_Titel :
Opto-Electronics and Communications Conference (OECC), 2011 16th
Print_ISBN :
978-1-61284-288-2
Electronic_ISBN :
978-986-02-8974-9
