Optimization of all-optical network testbed regarding NRZ and RZ modulation

Author

Zeng, Hongqing ; Vukovic, Alex ; Savoie, J. Michel ; Huang, Changcheng

Author_Institution

Commun. Res. Centre, Ottawa, Ont., Canada

Volume

1

fYear

2004

Firstpage

429

Abstract

The non-return-to-zero (NRZ) and return-to-zero (RZ) formats are two well-known cost-effective candidates for the optimum modulation in all-optical networks (AON). This paper focuses on the effects of novel active/passive optical devices, such as photonic switches and erbium doped fibre amplifiers (EDFA), and the effects of modulation formats on the overall system performance, under metropolitan environments without dispersion control/compensation. The overall system performance of an AON metropolitan WDM testbed is investigated by numerical simulation while using NRZ and RZ modulation respectively. Q factor (equivalent to bit error ratio) is selected as the criterion for the comparison. The testbed is based on commercially available photonic switches, which support dynamic wavelength switching. The testbed operates at 10 Gbit/s per channel. The effects of transmitter optical powers and the extinction ratios are numerically analyzed. Based on these results the system parameters, such as transmitter power and extinction ratio are optimized for the AON testbed.

Keywords

error statistics; metropolitan area networks; numerical analysis; optical fibre amplifiers; optical fibre networks; optical modulation; optical switches; optical testing; optical transmitters; telecommunication equipment testing; wavelength division multiplexing; 10 Gbit/s; AON testbed; EDFA; NRZ modulation; Q factor; RZ modulation; WDM; active/passive optical devices; all-optical network testbed; bit error ratio; dynamic wavelength switching; erbium doped fibre amplifiers; extinction ratios; nonreturn-to-zero format; numerical simulation; optimization; photonic switches; return-to-zero formats; system performance; transmitter optical powers; All-optical networks; Doped fiber amplifiers; Erbium; Extinction ratio; Optical devices; Optical signal processing; Optical switches; Optical transmitters; System performance; System testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Computer Engineering, 2004. Canadian Conference on

ISSN

0840-7789

Print_ISBN

0-7803-8253-6

Type

conf

DOI

10.1109/CCECE.2004.1345047

Filename

1345047