D. Lesterlin

76-km transmission over standard dispersion fiber at 10 Gbit/s using a high-power integrated laser modulator and a PIN receiver without any optical amplifier

We report a high output power (20 mW) integrated laser-modulator device, which allows 10-Gbit/s transmission with a negative alpha parameter over 76 km of standard fiber without any optical amplifier as a result of an average launched power of +3.6 dBm under modulation conditions.

From 40 to 80 10 Gbit/s DWDM transmission for ultra long-haul terrestrial transmission above 3000 km

We report transmission results of 40 to 80 channels at 10 Gbit/s over a terrestrial SMF fiber map with above 80 km spans. From 3000 to 4000 km can be reached while leaving about a 4 dB system margin.

Experimental demonstration of the combined phase and amplitude facet reflectivity effects on the chirp of a 10 Gbit/s integrated laser-modulator source

Summary form only. We experimentally show that laser and modulator facet phases with respect to the DFB laser grating are as important for the chirp as the modulator facet reflectivity given a 10 Gbit/s integrated laser-modulator source. We have presented a way to assess not only the modulator induced chirp but also the laser induced chirp of an integrated laser-modulator device. We have shown the influence of the modulator facet reflectivity and the major role of the facet phase versus the DFB laser grating on the chirp. We conclude that the facet reflectivity determines the 10 Gbit/s performance yield rather than individual chip behaviour.

High FM Bandwidth of a DBR laser with electro-optical tuning sections

Distributed-Bragg-reflector (DBR) laser diodes (LDs) look attractive for frequency modulation (FM) light sources.1 Nevertheless, they suffer from limitation of the — 3-dB cutoff frequency when the phase section is modulated by carrier injection.2 Taking into account high index variations measured on a superlattice (SL) modulator when it is reverse biased,3 we realized a high-frequency voltage-controlled FM source with a butt-jointed intracavity SL modulator in a multiple-quantum-well (MQW) DBR laser.

Three-section PDBR lasers with narrow spectral linewidth (less than 10 Mhz) under tuning

The spectral linewidth behavior under wavelength tuning of tunable lasers is a key point as far as local oscillator applications for a coherent multichannel (CMC) system is foreseen. At this time, spectral linewidth broadening under tuning operation has been observed and this is the main problem for monolithic tunable lasers as well as for DBR type lasers1 or TTG2 structures.