Title :
Performance comparison of single carrier and OFDM in coherent optical long-haul communication systems
Author :
Lobato, Adriana ; Kuschnerov, M. ; Diaz, Alberto ; Napoli, Antonio ; Spinnler, Bernhard ; Lankl, Berthold
Author_Institution :
Fed. Armed Forces Univ. Munich, Neubiberg, Germany
Abstract :
We investigate the nonlinear tolerance of coherent detected 50 Gbit/s dual-polarization binary-phase-shift-keying (DP-BPSK), 100 Gbit/s dual-polarization quaternary-phase-shift-keying (DP-QPSK), and 200 Gbit/s dual-polarization 16-ary quadrature amplitude modulation (DP-16-QAM) for single carrier with pulse shaping and orthogonal frequency division multiplexing (OFDM). The performance of these systems is compared and tested in two different scenarios: dispersion managed and unmanaged links. The results show that employing return-to-zero with 50 % of duty cycle (RZ50) as pulse shaping has a superior performance, especially in dispersion unmanaged links.
Keywords :
OFDM modulation; differential phase shift keying; light polarisation; nonlinear optics; optical communication equipment; optical dispersion; optical links; optical pulse shaping; optical testing; quadrature amplitude modulation; quadrature phase shift keying; DP-16-QAM; DP-BPSK; DP-QPSK; OFDM; bit rate 100 Gbit/s; bit rate 200 Gbit/s; bit rate 50 Gbit/s; coherent detected dual-polarization binary-phase-shift-keying; coherent optical long-haul communication systems; dispersion managed links; dispersion unmanaged links; dual-polarization 16-ary quadrature amplitude modulation; dual-polarization quaternary-phase-shift-keying; duty cycle; nonlinear tolerance; orthogonal frequency division multiplexing; pulse shaping; return-to-zero signal; single carrier; Abstracts; Lead; OFDM; Optical filters; Optical polarization; Optical signal processing; Wavelength division multiplexing; Coherent detection; Return-to-zero with 50 % of duty cycle (RZ50); non-return-to-zero (NRZ); orthogonal frequency division multiplexing (OFDM); root raisedcosine filter (RRC); wavelength division multiplexing (WDM);
Conference_Titel :
Communications and Photonics Conference and Exhibition, 2011. ACP. Asia
Conference_Location :
Shanghai
Print_ISBN :
978-0-8194-8961-6
