Abstract
An analytic expression is derived for the output signal spectrum from a semiconductor laser amplifier using an approach analogous to the Langevin equations of laser noise analysis. The signal linewidth is shown to increase with input linewidth and amplifier gain. There is an optimum facet reflectivity which gives the smallest linewidth increase. The results have significant implications in weakly coherent systems utilizing cascades of optical amplifiers.
Original language | English |
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Pages (from-to) | 2397-2403 |
Number of pages | 7 |
Journal | IEEE Journal of Quantum Electronics |
Volume | 27 |
Issue number | 11 |
DOIs | |
Publication status | Published - Nov 1991 |
Externally published | Yes |