Abstract
The common method of modulating the laser radiation amplitude by varying the pumping current suffers from two drawbacks First, it is limited to relatively low frequencies (f ≤ 10 GHz). Second, for f ≥ > 1 GHz, it is plagued by oscillations in the wavelength of the dominant mode (chirp), A new approach, proposed in this work, allows an enhancement of the coding frequency, suppressing the chirp at the same time. The key idea consists of a coherent combination of two independent means of controlling the output radiations the pumping current I and the effective carrier temperature Te in the laser active region.
© 1993 Optical Society of America
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