Abstract

Optical-Time-Division-Multiplexing (OTDM) is an attractive technology to realize higher-bit-rate systems, since it requires lower-speed electronics than ETDM. Owing to this nature, there have been many reports demonstrating ultra-high-bit-rate transmission using OTDM, such as single-channel 1.28 Tbit/s transmission experiment.¹ Another good feature of OTDM is that the relative optical phase between the adjacent pulses can be precisely controlled by adjusting the delay in the OTDM process. By taking the advantage of this feature, carrier-suppressed RZ (CS-RZ) signals was found to be easily generated with OTDM.² So far, however, how the relative optical phase condition affects the transmission performance has not been clarified yet. In addition, the difference between the conventional CS-RZ signals and OTDM CS-RZ signals has not yet well studied.

© 2002 Optical Society of America