Frederic Seguineau

Optical regeneration at 40 Gb/s and beyond

As optical amplifiers have opened new perspectives for optical communication systems with ultrahigh capacities and long-haul transmission distances (more than 1 Tb/s over 10 000 km), fundamental limits are being felt. In order to overcome these propagation impairments, another technology revolution is soon required. Promising developments concern in-line all-optical regeneration, which makes it possible to transmit optical data over virtually unlimited distances. In this paper, we recall the basic principles of optical regeneration in optical communication systems and review the current technology alternatives foreseen for future 40-Gb/s transmission system implementation, as investigated in Alcatel Research and Innovation. The alternative offered by optoelectronic regeneration is also discussed, so as to identify and highlight the advantages of the all-optical approach.

40 Gbit/s optical 2R regenerator based on passive saturable absorber for WDM long-haul transmissions

A semiconductor saturable absorber based on ion-irradiated quantum-well vertical cavity is implemented in a 40 Gbit/s dispersion-managed RZ loop, yielding a Q-factor of 13 dB and 11.3 dB at 7600 km distance in single-channel and in WDM environment with five 200 GHz-spaced 40 Gbit/s channels, respectively.

Efficiency of highly nonlinear fiber in soliton converter for 40 Gbit/s 10,000 km fiber transmission

We show that highly nonlinear fiber is essential to reduce the input power, length, loss, and noise of a soliton converter, and that it actually halves the input power and length compared with a conventional DSF in 40 Gbit/s 10,000 km transmission.

Associating optical regeneration and dispersion management for 43Gbit/s long-haul transmissions

We review different techniques for 43Gbit/s Optical Regeneration targeting ultra long-haul transmissions or/and terrestrial networking applications in association with Dispersion Management. Principles of operation and recent system experiments are described.

Optical signal regeneration for 40Gbit/s transmission systems

In this paper, we review different techniques for Optical Regeneration targeting either ultra long-haul transmission or/and terrestrial networking applications. Principles of operation as well as recent system experiments are described.