Dispersion compensation in externally modulated transport system using chirped fiber grating as well as large effective area fiber

We propose and demonstrate, for the first time, an externally modulated NTS C AM-VSB erbium-doped fiber amplifier repeated system in the 1550-nm region , which uses a chirped fiber grating as well as a large effective area fibe r as the dispersion compensation devices. In comparison with the convention al externally modulated fiber optical CATV system, excellent performances o f carrier-to-noise ratio greater than or equal to 50 dB, composite second o rder greater than or equal to 78 dB, and composite triple beat greater than or equal to 68 dB were obtained for the full channel band after a 100-km f iber span transmission. (C) 2001 Society of Photo-Optical instrumentation E ngineers.