Abstract

We investigated and compared the effect of SOA nonlinearities on 12.5 Gsymbol/s RZ-OOK, RZ-DQPSK, and polarization-bit-interleaved RZ-DQPSK DWDM channels with 20-GHz spacing. Our results showed that polarization-bit-interleaved RZ-DQPSK is overall most tolerant to SOA nonlinearities.

© 2004 Optical Society of America

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