Tesis
Shaping ultra-short optical pulses by semiconductor structures in the mode-locking regime and technique of measuring their parameters
Autor
PEDRO MORENO ZARATE
Institución
Resumen
We discuss an approach for characterizing the train-average parameters of low-power
picosecond optical pulses with the frequency chirp, arranged in high-repetition-frequency
trains, in both time and frequency domains. This approach had been previously applied to
rather important case of pulse generation when a single-mode semiconductor heterolaser
operates in a multi-pulse regime of the active mode-locking with an external single-mode
fiber cavity. This approach involves the joint Wigner time-frequency distributions, which
can be created for those pulses due to exploitation of a novel interferometric technique.
Also the modified scanning Michelson interferometer has been chosen for obtaining the
field-strength auto-correlation functions, with the joint time frequency distribution approach
for the pulses reconstruction. In fact, we have presented the key features of a new
experimental technique for accurate and reliable measurements of the train-average temporal
width and the frequency chirp of picosecond optical pulses in high-repetition rate
trains. The InGaAsP/InP-heterolasers, operating at 1320 nm wavelength range, have
been used within the experiments.
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