Title :
CSO/CTB performances improvement by using optical VSB modulation technique
Author_Institution :
Inst. of Electro-Opt. Eng., Nat. Taipei Univ. of Technol., Taiwan
Abstract :
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.
Keywords :
amplitude modulation; cable television; optical fibre amplifiers; optical fibre networks; optical modulation; 100 km; CSO/CTB performances improvement; carrier-to-noise ratio; composite second order performance; composite triple beat performance; externally modulated NTSC AM-vestigial side-band erbium-doped fiber amplifier-repeated system; fiber optical CATV systems; full channel band; long-haul transport; optical VSB modulation technique; single-mode fiber transport; Erbium-doped fiber amplifier; Fiber nonlinear optics; Nonlinear optics; Optical attenuators; Optical distortion; Optical filters; Optical modulation; Optical scattering; Optical transmitters; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2002.802391
