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Effect of semiconductor laser phase noise on BER performance in an optical DPSK heterodyne-type experiment

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2 Author(s)
F. Favre ; CNET, LAB/MER/FOG, Lannion, France ; D. Le Guen

We report the first experimental investigation of the effect of laser-diode phase noise on the error-rate performance in a PSK heterodyne differential detection fibre communication experiment. A newly designed AlGaAs laser emitter with adjustable linewidth is used as both the signal carrier and the local oscillator. Error rate is measured for 25 Mbit/s and 50 Mbit/s signals at an intermediate frequency of 250 MHz, and a BER (bit error rate) of 10¿10 has been achieved.

Published in:

Electronics Letters  (Volume:18 ,  Issue: 22 )