Title :
Investigation of FEC improvement in a dispersion limited direct modulated 2.5 Gb/s transmission experiment
Author :
Mobilon, Eduardo ; de Barros, M.R.X. ; Bordonalli, Aldáario C.
Author_Institution :
CPqD-Telecom & IT Solutions, Campinas, Brazil
Abstract :
The use of forward error correction (FEC) coding to reduce power penalties caused by dispersion induced intersymbol interference in direct modulated optical systems is experimentally investigated in this work. For a fiber span length of up to 300 km, the system performance was observed for coded and uncoded direct modulation of a semiconductor laser. The FEC technique improved the system performance, as a result of the correction of the dispersion induced bit errors, in such a way that it made possible for a 2.5 Gb/s direct modulated transmission experiment to reach a former nonviable 300 km fiber span with a "better than back-to-back" performance, at 10-10 BER.
Keywords :
compensation; error statistics; forward error correction; intersymbol interference; optical fibre communication; optical fibre dispersion; optical modulation; wavelength division multiplexing; 2.5 Gbit/s; 300 km; BER; DWDM; FEC coding; chromatic dispersion; coded direct modulation; direct modulated optical systems; dispersion compensation; dispersion induced bit errors; dispersion induced intersymbol interference; dispersion limited direct modulated transmission; fiber span length; forward error correction coding; semiconductor laser; uncoded direct modulation; Fiber nonlinear optics; Forward error correction; Interference; Nonlinear optics; Optical buffering; Optical fiber dispersion; Optical fiber networks; Optical modulation; Optical refraction; Semiconductor lasers;
Conference_Titel :
Microwave and Optoelectronics Conference, 2003. IMOC 2003. Proceedings of the 2003 SBMO/IEEE MTT-S International
Print_ISBN :
0-7803-7824-5
DOI :
10.1109/IMOC.2003.1242708
