Title :
Lightwave multi-channel analog AM video distribution systems
Author :
Darcie, T.E. ; Bodeep, G.E.
Author_Institution :
AT&T Bell Lab., Holmdel, NJ, USA
Abstract :
Device linearity and noise requirements for multichannel amplitude-modulated subcarrier-multiplexing (AM-SCM) lightwave systems are discussed. Laser nonlinearity, most notably second-order distortion, is found to limit the maximum modulation, that can be applied to the laser. The resultant composite second- and third-order distortion can be predicted from conventional two-tone laser linearity measurements. The carrier-to-noise ratio (CNR) for the modulation depth allowed by linearity requirements is found to be limited by intensity noise and noise from the receiver preamplifier
Keywords :
amplitude modulation; multiplexing; optical links; optical noise measurement; video signals; CNR; carrier-to-noise ratio; device linearity; intensity noise; lightwave systems; maximum modulation; modulation depth; multichannel amplitude-modulated subcarrier-multiplexing; noise requirements; receiver preamplifier; second-order distortion; third-order distortion; two-tone laser linearity measurements; Costs; Fiber lasers; Frequency; Intensity modulation; Laboratories; Laser feedback; Laser noise; Linearity; Optical modulation; Power lasers;
Conference_Titel :
Communications, 1989. ICC '89, BOSTONICC/89. Conference record. 'World Prosperity Through Communications', IEEE International Conference on
Conference_Location :
Boston, MA
DOI :
10.1109/ICC.1989.49836
