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A feed-forward heterodyne scheme is shown to simultaneously reduce the phase noise of many comb lines from a quantum-dash mode-locked laser diode (QD-MLLD). This enables the first coherent data transmission using QD-MLLD as multi-wavelength source.
An optical frequency comb generated by an InAs/InP quantum dash based passively mode-locked laser is investigated. The comb spans ~1.1THz, with 110 modes spaced by ~10GHz, and shows a long-term stability of 3x10-9 over 1000s.
We report for the first time the passive mode-locking of single section Fabry-Perot (FP) lasers based on InAs quantum dots grown on (113)B InP substrate. Devices under study are a 1 and 2 mm long laser diodes emitting around 1.58 µm. Self-starting pulses with repetition rates around 39 and 23 GHz and pulse widths down to 1.5 ps are observed after propagation through a suitable length of single-mode...
Mode-locking of single-section Fabry-Pérot lasers based on InAs/InP quantum dashes is studied by second-harmonic generation frequency-resolved optical gating (SHG-FROG). The devices take advantage of an optimized epitaxial structure with modal gain of 50 cm−1 showing a broad and flat emission spectrum of width in excess of 14 nm. Self-starting pulses of a width down to 430 fs are observed after intracavity...
Pulse generation from single-section Fabry-Pérot InAs/GaAs edge-emitting quantum dot lasers is reported at 1.3μm. Mode-locking performances of the devices are studied as function of injection current and optical spectrum shape.
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