Title :
Intermodulation distortions of broad-band modulated laser diodes
Author_Institution :
Inst. fur Hochfrequenztech., Tech. Univ., Berlin, Germany
fDate :
12/1/1992 12:00:00 AM
Abstract :
For modulation frequencies with arbitrary frequency spacing the intermodulation distortions of laser diodes have been investigated both theoretically and experimentally. The second-order distortions only depend on the resulting intermodulation frequency, whereas for the third-order distortions the position of each modulation frequency must be considered. With respect to subcarrier multiplexed (SCM) communication systems, it was found that carriers with large frequency differences can increase the third-order intermodulation distortions up to 15 dB compared to those for closely spaced carriers
Keywords :
intermodulation; laser theory; multiplexing equipment; optical communication equipment; optical modulation; semiconductor lasers; subcarrier multiplexing; arbitrary frequency spacing; broad-band modulated laser diodes; communication systems; intermodulation distortions; intermodulation frequency; large frequency differences; modulation frequencies; second-order distortions; subcarrier multiplexed; third-order distortions; Charge carrier density; Charge carrier lifetime; Diode lasers; Distortion measurement; Electron emission; Equations; Frequency modulation; Harmonic analysis; Intermodulation distortion; Laser noise;
Journal_Title :
Lightwave Technology, Journal of
