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Measurements and calculations of intermodulation and harmonic distortion in 1.3 mu m high-speed distributed feedback lasers at multi GHz modulation frequencies are presented. The observed frequency and power dependence of the distortion levels are well explained by a perturbation analysis of the laser rate equations using parameters derived from the measured small-signal optical response of the laser...
High-performance AlInAs/GaInAs HBTs for low-power digital circuits have been demonstrated. Large-area devices exhibit high current gain (up to 600), observable down to low currents. Small-area devices display f/sub t/ up to 78 GHz and f/sub max/ up to 45 GHz. Fitting S-parameter measurements to an equivalent circuit model shows that f/sub max/ is limited by a large R/sub b/C/sub bc/ time constant...
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