Title :
Reduction of pulse-to-pulse interaction using alternative RZ formats in 40-Gb/s systems
Author :
Cheng, K.S. ; Conradi, Jan
Author_Institution :
Dept. of Electr. & Comput. Eng., Alberta Univ., Edmonton, Alta., Canada
Abstract :
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.
Keywords :
optical communication; optical modulation; optical pulse generation; phase modulation; telecommunication signalling; 40 Gbit/s; RZ formats; adjacent bits; alternating phase return-to-zero; duobinary; duobinary RZ format; modified-duobinary RZ format; modified-duobinary return-to-zero modulation; modulation formats; optical communication systems; optical phase; pulse-to-pulse interaction; pulse-to-pulse interaction reduction; Amplitude modulation; Fiber nonlinear optics; Nonlinear optics; Optical distortion; Optical mixing; Optical modulation; Optical receivers; Optical signal processing; Optical transmitters; Signal generators;
Journal_Title :
Photonics Technology Letters, IEEE
