Abstract

Motivated by the increasing demand for high capacity optical networks, many groups have performed ultrahighspeed transmission experiments such as 160 Gbit/s OTDM transmission. Intensive efforts have recently been made to extend the transmission distance and increase the system margin by employing polarization multiplexing or advanced modulation formats such as DPSK. However, the OTDM system employing ultrashort pulses under single polarization and the OOK format has been limited to a distance of several hundred kilometers, because such short pulse transmission is very sensitive to even small perturbations in optical fibers, such as second and higher order dispersion, PMD, and time-varying dispersion. In this talk, we review first recent progress on ultrafast OTDM transmission up to 1 Tbit/s. Then, we describe a new technique for distortion-free transmission employing time-domain optical Fourier transformation (OFT) which we proposed recently [1]

© 2007 IEEE