Title :
Experimental verification of self-phase-modulation-induced nonlinear distortion in externally modulated AM-VSB lightwave systems
Author :
Willems, F.W. ; Muys, W. ; van der Plaats, J.C.
Author_Institution :
AT&T Network Syst. Netherlands B.V., Huizen, Netherlands
Abstract :
Self-phase-modulation (SPM) in intensity-modulated systems causes frequency chirp, which in combination with fiber dispersion generates second-order distortion. It has been shown theoretically that in externally modulated systems, this effect can cause intolerable amounts of composite second-order (CSO) distortion, if the length of the feeder section between the CATV head-end and the local exchange exceeds a few tens of kilometers. We will for the first time present experimental data, supporting the theoretical analysis.
Keywords :
amplitude modulation; cable television; nonlinear optics; optical fibre subscriber loops; optical modulation; optical noise; phase modulation; CATV head-end; composite second-order distortion; externally modulated AM-VSB lightwave systems; externally modulated systems; feeder section; fiber dispersion; frequency chirp; intensity-modulated systems; local exchange; second-order distortion; self-phase-modulation; self-phase-modulation-induced nonlinear distortion; Filters; Noise figure; Nonlinear distortion; Optical amplifiers; Optical attenuators; Optical distortion; Optical fiber amplifiers; Optical transmitters; Power amplifiers; Power generation;
Conference_Titel :
Optical Fiber Communications, 1996. OFC '96
Print_ISBN :
1-55752-422-X
DOI :
10.1109/OFC.1996.908295
