Optical 4-ary FSK modulation and demodulation experiment

13 October 1988

journal article
Published by Institution of Engineering and Technology (IET) in Electronics Letters

Vol. 24 (21) , 1310-1311
https://doi.org/10.1049/el:19880890

Abstract

Experimental results of the new 4-ary FSK modulation and demodulation systems are reported. Two binary signals are directly injected into different electrodes of a 3-electrode DFB-LD, producing an optical 4-ary FSK signal with 1 GHz frequency spacing. For demodulation, two differential detectors convert the 4-ary FSK signal into two binary signals.

Keywords

BINARY SIGNALS
FSK
DEMODULATION
DFB-LD
OPTICAL 4-ARY FSK SIGNAL
ELECTRODES
MODULATION
FREQUENCY SPACING
DIFFERENTIAL DETECTORS

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