Title :
Nonlinear distortion due to optical amplifiers in subcarrier-multiplexed lightwave communications systems
Author :
Saleh, A.A.M. ; Darcie, Thomas ; Jopson, R.M.
Author_Institution :
AT&T Bell Lab., Crawford Hill Lab., Holmdel, NJ, USA
Abstract :
Shows that an optically amplified, subcarrier-modulated lightwave signal suffers both a compression of the optical modulation indices and second-order nonlinear distortion (NLD). Expressions are derived which show that the NLD can seriously degrade performance, unless the lowest subcarrier frequency is larger than several gigahertz. System implications of these effects are discussed.
Keywords :
cable television; community antenna television; electric distortion; frequency division multiplexing; optical communication equipment; semiconductor junction lasers; lightwave communications systems; optical amplifiers; optical modulation indices compression; performance degradation; second-order nonlinear distortion; subcarrier frequency; subcarrier-modulated lightwave signal; subcarrier-multiplexed; system implications;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19890057
