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Lightwave CATV Systems Using a Frequency-Modulated Laser and Interferometer

01 January 1989

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The feasibility of using a frequency-modulated laser followed by an interferometer in a subcarrier multiplexed system is considered. It is found that a Fabry-Perot is not sufficiently linear for multi-channel AM-VSB systems. A Mach-Zehnder has acceptable performance only if the losses in each arm of the interferometer are balanced, and a high power laser diode is used.