Measurement Of Temperature-Dependent Linewidth Enhancement Factor In A 1550 Nm Vcsel

In this paper, we have investigated experimentally measured temperature-dependent Linewidth Enhancement Factor (alpha) of solitary 1550 nm InAlGaAs-InP multi-quantum-well vertical-cavity surface-emitting lasers (VCSELs). The temperature effects on (alpha) are investigated for a temperature range of -20 degrees C to 60 degrees C. Comparison is made between the experimental observations and theoretical predictions of similar VCSELs and with those different in wavelength or materials or in both.