Title :
111-Gb/s PolMux-Quadrature Duobinary for Robust and Bandwidth Efficient Transmission
Author :
Machi, F. ; Alfiad, M.S. ; Kuschnerov, M. ; Wuth, T. ; van den Borne, D. ; Hanik, N. ; de Waardt, H.
Author_Institution :
Tech. Univ. Munchen, Munich, Germany
fDate :
6/1/2010 12:00:00 AM
Abstract :
We investigate, by means of simulations, polarization-multiplexed (PolMux) quadrature duobinary (QDB) as a modulation format for transmitting 111-Gb/s signals with high spectral efficiency (SE) and acceptable system complexity. We show that PolMux-QDB can be used to transmit 111-Gb/s signals with an SE of 4-b/s/Hz, but at the same time has a higher tolerance to nonlinear transmission effects and local oscillator laser linewidth compared to PolMux-16QAM at the same data rate and SE.
Keywords :
electromagnetic wave polarisation; multiplexing equipment; quadrature amplitude modulation; spectral analysis; PolMux-16QAM; PolMux-quadrature duobinary; acceptable system complexity; bandwidth efficient transmission; bit rate 111 Gbit/s; local oscillator laser linewidth; nonlinear transmission effects; polarization multiplexed quadrature duobinary; quadrature amplitude modulation; spectral efficiency; Coherent detection; polarization multiplexing (PolMux); quadrature amplitude modulation (QAM); quadrature duobinary (QDB); quadrature phase-shift keying (QPSK);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2010.2045495
