D.M. Patrick

TL;DR: In this article, all-optical clock recovery at bit rates up to 40 Gbit/s using a model-ocked fiber ring laser is demonstrated, where the configuration simultaneously performs timing extraction and pulse reshaping to give a continuous stream of closely transform limited picosecond duration pulses.

TL;DR: In this article, an erbium-doped fiber ring laser with an all-optical active modelocking element consisting of a travelling wave semiconductor laser amplifier was used for clock recovery at bit rates up to 20 Gbit/s.

TL;DR: The use of semiconductor amplifiers in high speed communications systems is reviewed and the role of carrier density modulation, long believed to be a detrimental effect, and its useful exploitation is paid.

TL;DR: In this article, an all-optical demultiplexing operation using polarisation rotation due to nonlinear effects in a traveling wave semiconductor laser amplifier was performed using a 10 Gbit/s channel.

TL;DR: In this paper, a polarisation insensitive wavelength conversion of 20 Gbit/s data signals over a range of 12 nm has been demonstrated using nonlinear processes (cross-phase modulation) in a travelling wave semiconductor laser amplifier and a polarization nulling technique.