Title :
Fundamental second-order nonlinear distortions in analog AM CATV transport systems based on single frequency semiconductor lasers
Author_Institution :
AT&T Bell Lab., Breinigsville, PA, USA
fDate :
2/1/1992 12:00:00 AM
Abstract :
The author analyzes the fundamental second-order nonlinearities and their composite distortions in lightwave analog AM CATV transport systems based on single frequency semiconductor lasers. The nonlinear interaction between the photons and the electrons in the laser, the nonlinear dynamics of laser spatial hole burning, and the nonlinear interaction of fiber chromatic dispersion and laser frequency chirping are strongly dependent on the CATV carrier frequencies. The author found that the overall distortions increase for higher carrier frequencies and longer fiber spans. The distortion levels, however, are within the critical requirements for current and future CATV transport systems
Keywords :
amplitude modulation; cable television; laser frequency stability; nonlinear optics; optical communication equipment; optical hole burning; optical links; optical modulation; semiconductor junction lasers; CATV carrier frequencies; analog AM CATV transport systems; diode laser frequency stability; distortion levels; electrons; fiber chromatic dispersion; fiber spans; fundamental second-order nonlinearities; laser frequency chirping; laser spatial hole burning; nonlinear distortions; nonlinear dynamics; nonlinear interaction; optical modulation; photons; single frequency semiconductor lasers; Distributed feedback devices; Erbium-doped fiber lasers; Fiber lasers; Frequency; Laser feedback; Laser noise; Linearity; Nonlinear distortion; Optical distortion; Semiconductor lasers;
Journal_Title :
Lightwave Technology, Journal of
