Title :
Second-order distortion and electronic compensation in analog links containing fiber amplifiers
Author :
Kuo, C.Y. ; Bergmann, E.E.
Author_Institution :
AT&T Bell Lab., Breinigsville, PA, USA
fDate :
11/1/1992 12:00:00 AM
Abstract :
A detailed, wide-frequency-range analysis of the second-order distortions in optically amplified subcarrier-multiplexed lightwave video transport systems is presented. It is found that the three major system distortions are from the DFB laser´s intrinsic dynamic nonlinearity, the fiber amplifier´s nonuniform gain profile, and the fiber´s chromatic dispersion. A generic electronic circuit is proposed to compensate the distortions from all three mechanisms simultaneously. A low-distortion, amplified, 1.55-μm system in which the fiber amplifier and dispersive distortions are suppressed using the proposed circuitry is discussed
Keywords :
compensation; distributed feedback lasers; fibre lasers; optical communication equipment; optical dispersion; optical links; semiconductor lasers; subcarrier multiplexing; video signals; 1.55 micron; DFB laser diode nonlinearity; IR; analog links; chromatic dispersion; distortion compensation; electronic compensation; fiber amplifiers; generic electronic circuit; intrinsic dynamic nonlinearity; lightwave video transport systems; low-distortion; nonlinear optics; nonuniform gain profile; optical fibre dispersion; optical links; optically amplified; second-order distortions; subcarrier-multiplexed; system distortions; wide-frequency-range analysis; Fiber lasers; Frequency; Laser noise; Linearity; Optical distortion; Optical fiber amplifiers; Power amplifiers; Semiconductor device noise; Semiconductor lasers; Semiconductor optical amplifiers;
Journal_Title :
Lightwave Technology, Journal of
