Title :
Improved filter concatenation tolerance using duobinary modulation format for metropolitan area networks
Author :
Zacharopoulos, Ioannis ; Tzanakaki, Anna ; Parcharidou, Despoina ; Tomkos, Ioannis
Author_Institution :
Opt. Commun. Syst. & Networks group, Athens Inf. Technol. Center, Greece
Abstract :
In this paper a simulation study of a metropolitan area networks (MAN) scenario is carried out. The MAN is incorporating a number of nodes with optical add-drop-multiplexers (OADMs) each one incorporating two filters. The work focuses on the filter concatenation using standard nonreturn-to-zero (NRZ) and DBR modulation formats and compares their system performance. The filters used in the simulations were 3rd order Bessel (AWG transfer function) and Butterworth (TTF transfer function) filters. Results are taken for 10 Gb/s systems with 100, 50 and 25 GHz channel spacing. The 3 dB filter bandwidth in all cases is assumed to be 65% of the channel spacing, which is consistent with commercially available components.
Keywords :
channel spacing; metropolitan area networks; optical communication equipment; optical filters; optical modulation; optical transfer function; simulation; telecommunication channels; tolerance analysis; wavelength division multiplexing; 10 Gbit/s; 100 GHz; 25 GHz; AWG transfer function; Bessel filter; Butterworth filter; DBR; NRZ modulation format; OADM; TTF transfer function; channel spacing; duobinary modulation format; filter concatenation tolerance; metropolitan area network; optical add-drop-multiplexer; standard nonreturn-to-zero modulation format; Bandwidth; Channel spacing; Distributed Bragg reflectors; Metropolitan area networks; Optical add-drop multiplexers; Optical filters; Optical modulation; Optical signal processing; System performance; Transfer functions;
Conference_Titel :
Lasers and Electro-Optics Society, 2003. LEOS 2003. The 16th Annual Meeting of the IEEE
Print_ISBN :
0-7803-7888-1
DOI :
10.1109/LEOS.2003.1252983
