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E. A. De Souza, M. C. Nuss, W. H. Knox, and
D. A. B. Miller, "Wavelength-division multiplexing with femtosecond
pulses," Optics Letters, 20, 1166-1168 (1995). Loaded and unloaded
ring-oscillator circuits with an electrical and surface-normal 850 nm optical readout are
fabricated using a hybrid 0.8 mu m silicon-CMOS/GaAs-AlGaAs MQW process. Measurements of
the oscillation frequency of these circuits show total capacitance associated with the
flip-chip-bonded optical MQW modulators as low as 52 fF
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