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A scaled 40 Gb/s optical receiver incorporating a transimpedance amplifier (TIA), a limiting amplifier (LA), a clock and data recovery (CDR), and a 1:4 demultiplexer was proposed in 65 nm CMOS technology. The TIA employs a regulated cascode structure to achieve low input resistance and a stable dc operating point, whereas the LA adopts the third-order interleaving active feedback technique to obtain...
Besides dispersion engineering, idler-band distributed loss provides a new synthesis freedom to flatten and broaden the gain spectrum for fiber-optic parametric amplifier. The pump-to-signal conversion efficiency is kept high in spite of the loss.
This paper presents a 1.2V CMOS RSSI based on successive detection structure. An equation estimating the maximum nonlinear error is derived and the simulation results show it is more accurate than the former one proposed by P. C. Huang. The RSSI achieves a wide bandwidth from 1MHz to 500MHz. The linear dynamic range is at least 80dB. The nonlinear error based on single frequency curve fitting is within...
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