Title :
Third-order intermodulation distortion in coherent subcarrier-multiplexed systems
Author :
Gross, Richard ; Olshansky, Robert
Author_Institution :
GTE Lab. Inc., Waltham, MA, USA
fDate :
4/1/1989 12:00:00 AM
Abstract :
Distortion due to third-order intermodulation products in coherent optical subcarrier-multiplexed communication systems is investigated. It is shown that intermodulation distortion limits both the number of data channels and the maximum obtainable carrier-to-noise ratio. Analysis is restricted to systems operating over one octave. Experimental results on the optimal phase modulation (PM) index based on the number and frequency allocation of the microwave channels are discussed. The conditions for optimal performance with respect to channel number and phase modulation index are given.<>
Keywords :
intermodulation; multiplexing equipment; optical communication equipment; optical modulation; phase modulation; channel number; coherent optical subcarrier-multiplexed communication systems; data channels; frequency allocation; maximum obtainable carrier-to-noise ratio; microwave channels; optimal phase modulation index; third-order intermodulation distortion; Frequency shift keying; Intermodulation distortion; Optical distortion; Optical filters; Optical mixing; Optical modulation; Optical receivers; Optical sensors; Optical transmitters; Phase modulation;
Journal_Title :
Photonics Technology Letters, IEEE
