The dynamic wavelength chirping observed in modulated semiconductor lasers can be reduced in three-terminal coupled-cavity structures by appropriately splitting the modulation signal to the two cavities. In a 1.3-μm wavelength GaInAsP/InP cleaved-coupled-cavity laser, the 90% modulation-depth linewidth was reduced to ∼0.2 Å for modulation frequencies up to 1.7 GHz.
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Coldren et al. (1985) studied this question.
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