Square of resonance frequency against output power and fit by Eq. (1) .
Damping coefficient against square of resonance frequency and fit by Eq. (2) .
2β/m ratio against modulation frequency at different injection currents.
Corner frequency and linewidth enhancement factor against the output power extracted from 2β/m-frequency plots at 25 °C.
Gain compression coefficient against output power extracted by different methods at 25 °C and result of calculation.
Gain compression coefficient against output power extracted from the 2β/m-frequency plots at 85 °C and results of calculations.
Nonlinear gain coefficient reported for QD lasers emitting around 1.3 μm.
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