Fine structure of frequency-chirping and FM sideband generation in single- longitudinal-mode semiconductor lasers under 10 GHz direct intensity modulation.
01 January 1985
The fine structure of the dynamically broadened spectral line of a single- longitudinal-mode InGaAsP laser under large-signal direct intensity-modulation at 10 GHz was studied. It is shown that the frequency-chirped spectral line has a characteristic FM modulation spectrum with many sidebands at 10 GHz intervals and with an asymmetry due to the superposition of the AM modulation.