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Light-current curves for (a) and (b) long devices. The inset gives the optical spectrum.
SSM response for (a) and (b) long devices at three different currents, showing experimental (symbols) and fitted (line) data.
vs , for a (a) device and a (b) device. The gradient of which gives the -factor as (a) 1.4 ns and (b) 0.6 ns.
-factor limited - cavity loss curves [after Ishida et al. (Ref. 15)] for the GS and the ES fitted to experimental determined -factor limited 3 dB bandwidths. Squares/circles give GS/ES data respectively. Dashed lines are fit with of 6.5, 5.5, and 4.5 ps (increasing modulation bandwidth) for the GS and 3.5, 2.8, 2.3 ps for the ES.
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