Optical pulse generation at 4 Gb/s was achieved without chirping by using direct phase
modulation of a DFB laser diode and an optical self-homodyne technique. The authors …

A scheme for gigabit range modulation without wavelength chirping is proposed. This
technique uses the direct phase modulation property of a laser diode, and an optical …

Compares four intensity modulation schemes in terms of their spectrum broadening and
transmission characteristics. The schemes examined are direct modulation, Mach-Zehnder …

For high speed and long haul direct detection optical transmission systems, low chirp
transmitters are necessary to avoid waveform degradation from fiber chromatic dispersion …

A new method to manipulate the chirp characteristics of laser-diode pulses is proposed,
utilising the cross-phase modulation in optical fibres. Chirping manipulation of a red-shift …

Beyond 10 Gbit/s, the fiber dispersion becomes an increasingly difficult barrier to overcome.
A number of optical techniques have been demonstrated to overcome the dispersion …

The authors demonstrate that an injection locking technique suppresses the chirp in
wavelength conversion using a laser diode. Waveform patterns of a 2.5 Gbit/s intensity …

Applying cascaded phase modulation after widely dispersing a short pulse with reverse
frequency chirp at each stage can effectively compensate higher-order chromatic dispersion …

A pulse-compression phenomenon of a chirp pulse transmitted through a long single-mode
fibre is presented. The chirp pulse is obtained by using a carrier density change in a DFB …

Wavelength shifting of a 21.4-Gbaud 64-QAM signal is achieved using Bragg scattering with
dither-free pumping in a longitudinally stressed highly nonlinear silica fiber. Three …