CSO/CTB performances improvement by using optical VSB modulation technique

This study presents an externally modulated NTSC AM-vestigial side-band (VSB) erbium-doped fiber amplifier-repeated system that uses the optical VSB modulation technique to improve the systems' composite second order (CSO) and composite triple beat (CTB) performances. In comparison with conventional externally modulated fiber optical CATV systems, excellent performances of carrier-to-noise ratio /spl ges/50 dB, CSO /spl ges/69 dB, and CTB /spl ges/68 dB were achieved for the full channel band over a 100-km single-mode fiber transport. This proposed system is suitable for fiber optical CATV systems in long-haul transport.