A novel method for estimating the linewidth enhancement factor a of semiconductor lasers is developed. The correlation between AM and FM noises of a CSP-type AlGaAs laser was measured in the frequency range above 1 MHz. From the measured correlation, the linewidth enhancement factor α is estimated to be approximately -2.2 to -2.8.
Published in:
Electronics Letters
(Volume:20
,
Issue:
11
)
Date of Publication: May 24 1984