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This work reports the optimization of the design 1.55μm QDashes directly modulated lasers. Non-amplified 10Gb/s transmission in standard single mode fibre is demonstrated from back-to-back up to 65km at constant operating conditions.
Static and dynamic properties of InP-based Quantum Dashes of 1.55μm directly modulated lasers are reported. Using growth and design optimization, we demonstrate linewidth enhancement factor above threshold as low as 2 and decreasing with injected current. This unique chirp behavior leads to uncompensated and non-amplified SMF 10Gb/s transmissions at a constant bias current from back-to-back up to...
The effect of p-doping on both temperature and dynamic performances of 1.55mum Quantum Dashes lasers is investigated in detail. A relaxation frequency up to 13.5GHz and a damping factor as low as 0.22ns are demonstrated. The origin of this drastic improvement of the dynamic properties of Quantum Dashes lasers is discussed.
We report on comb generation at 1.55 mum using a mode-locked quantum-dash-based laser. A flat optical spectrum with a ~10-nm width consisting of eight 100-GHz-spaced channels is demonstrated. Separate error-free transmission of each channel is achieved at 10 Gb/s over 50-km-long single-mode fiber. Compared to an ideal external cavity continuous-wave laser, a penalty of only 1.5 dB is measured for...
Error-free transmission over 50 km single mode fiber of 8 WDM ITU channels with 100 GHz channel spacing is demonstrated at 10 Gbit/s by using comb generation in a quantum dash mode-locked laser.
A modulation bandwidth up to 10 GHz in continuous wave mode operation is demonstrated using optimized 1.55 mum InAs/InP (100) quantum dashes based lasers.
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