Temparature drift of modulation characteristics in semiconductor lasers

Origin of link gain fluctuations in analog radio over single-mode fiber systems

“…Moreover, the index of refraction of the fiber span will be influenced by the variation of T, leading to changes of β and eventually of τ 0 . In response to monothonic variations of T, these quantities exhibit a monothonically varying behavior [15,16]. The same monothonic behavior is then expected for I DC and I RF , and can be typically put into account at the design and/or post processing stages exploiting either ad hoc characterizations performed on the components utilized and/or the information given by the suppliers.…”

Research of Frequency Characteristics and Temperature Drift Power Quantum-Well Lasers

“…Therefore it is an issue of great interest to estimate potential frequency characteristics and АFC and PFC temperature drift of QW power lasers with wavelengths of 0,85 -1,05 μm, which correspond to maximum quantum efficiency of modern photodetectors modulated directly with a radio-frequency signal. However, nowadays only frequency characteristics and their temperature drift of low-power DH lasers of various types have been well-studied under direct modulation with a radio-frequency signal [4][5][6]. This is due to a much greater complexity in construction of a dynamic model of QW power lasers, as it is necessary to simultaneously take into consideration a lot of parameters, neglecting of which facilitated considerably the analysis of low-power lasers.…”

Temperature-dependent threshold and modulation characteristics in InGaAs/GaAs quantum-well ridge-waveguide lasers

“…For the temperaturedependent calculation, we assume that the temperature effect on I leak is dominated by the threshold carrier density. 20,21 The dashed curve shown in Fig. The solid curve beside the data is the theoretical result which has incorporated the above-mentioned temperaturedependent optical confinement factor, gain curves, and lateral leakage currents.…”