Charateristics of ultrashort optical pulses based on electroabsorption modulation lasers were investigated by numerical simulations and experiments.

Based on the character of photoelectric mixing in electro-absorption modulator in- tegrated distributed-feedback semiconductor laser (EAM-DFB),the equivalent circuit model in- cluding spontaneous emission,Auger recombination,parasitic efforts and isolation resistance is established.

Novel 40 Gbit/s optical 3R regenerator using electroabsorption modulators;

60μm laser diode and electroabsorption modulator monolithically integrated with a novel dual-waveguide spot-size converter output for low-loss coupling to a cleaved single-mode optical fiber are demonstrated.

The switch window of demultiplexer using an electroabsorption modulator (EAM) is simulated and analyzed theoretically combined with the channel crosstalk and intensity fluctuations (synchronization deviation and time jitter).

EAMs and their applications to modern photonic technology;

1、We study the working mechanism of EAM and the principe of the demultiplexer based on EAM.

Gain-switched distributed-feedback laser (GS-DFB) and comb-like dispersion profiled fiber (CDPF) are employed to generate the ultra-short optical pulses; chirped fiber grating for dispersion compensation; electro-absorption modulator (EAM) for de-multiplexing the 40 Gbit/s data stream.

Optical pulse generated by external electro-absorption modulator (EAM) in virtue of the method of fringe-resolved second harmonic generation correlation (FRSHG) was measured.

Optical gate based on electro-absorption modulator (EAM) now plays an important role in all-optical 3R regeneration, multiplexing, logic gates, and wavelength conversion for its polarization insensitivity and weak pattern effect.