Abstract

We investigate the transmission characteristics of a two-level optically labeled signal with amplitude-shift keying (ASK) and differential phase-shift keying (DPSK) modulation. Theoretical analysis suggests that a precompensation scheme has a better transmission performance for a 10-Gbit/s ASK payload and 2.5-Gbit/s DPSK label compared with postcompensation, which has been confirmed by our transmission experiment. The limitations resulting from the extinction ratio and the laser linewidth are also discussed.

© 2002 Optical Society of America

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