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Conferences > OFC > 1990 > FD > FD2

Demonstration of a 4-ary FSK coherent optical communication system

STEPHEN B. ALEXANDER, R. BARRY, D. M. CASTAGNOZZI, V. W. S. CHAN, D. M. HODSDON, L. L. JEROMIN, J. E. KAUFMANN, D. M. MATERNA, R. J. PARR, M. L. STEVENS, and D. W. WHITE

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Abstract

Frequency shift keying (FSK) has proved one of the most popular modulations for use in coherent optical communication systems. FSK systems typically use a binary signaling format where one of two possible tones is transmitted corresponding to data bits one and zero. Demodulation can be accomplished with a frequency discriminator, a two-filter demodulator, or if a 3-dB loss in theoretical performance is acceptable, a single filter receiver.

© 1990 Optical Society of America

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