LOCKING BANDWIDTH OF ACTIVELY MODE-LOCKED SEMICONDUCTOR-LASERS

Citation
Z. Ahmed et al., LOCKING BANDWIDTH OF ACTIVELY MODE-LOCKED SEMICONDUCTOR-LASERS, IEEE journal of quantum electronics, 29(6), 1993, pp. 1714-1721
Citations number
46
Categorie Soggetti
Engineering, Eletrical & Electronic","Physics, Applied
ISSN journal
00189197
Volume
29
Issue
6
Year of publication
1993
Pages
1714 - 1721
Database
ISI
SICI code
0018-9197(1993)29:6<1714:LBOAMS>2.0.ZU;2-N
Abstract
The locking bandwidth of an actively mode-locked semiconductor laser i s a measure of its tolerance to variations in the input drive frequenc y. At frequencies outside the locking bandwidth, the output pulses fro m the laser exhibit large amplitude fluctuations and timing jitter. Th is paper investigates the locking bandwidths of fundamentally driven a nd harmonically driven high-repetition-rate actively mode-locked semic onductor lasers. We show that the locking bandwidth is maximized when the cavity length is minimized. The locking bandwidth is related to an important constant, the ''pull-in time''. Experimental data and numer ical modeling show that the pull-in time is a function of the optical bandwidth of the system and the RF drive level.