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Reduction of pulse-to-pulse interaction using alternative RZ formats in 40-Gb/s systems

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2 Author(s)
Cheng, K.S. ; Dept. of Electr. & Comput. Eng., Alberta Univ., Edmonton, Alta., Canada ; Conradi, J.

We show that pulse-to-pulse interaction at 40 Gb/s can be reduced by alternating the optical phase of adjacent bits by using either a modified-duobinary return-to-zero (RZ) modulation format or RZ with alternating phase. Also, the generation of ghost pulses can be greatly suppressed using the modified-duobinary and duobinary RZ format.

Published in:

Photonics Technology Letters, IEEE  (Volume:14 ,  Issue: 1 )