Endless polarisation control using a LiNbO/sub 3/ device in a 140 Mbit/s dual filter FSK transmission experiment

Endless polarisation control with a LiNbO/sub 3/ device consisting of two optical retarders has been tested in a heterodyne transmission experiment. For simulation of polarisation fluctuations, the temperature of a 12 km fibre has been varied from -10 degrees C to 60 degrees C.<
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