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A high-sensitivity, fully-differential optical receiver for high-density photonic interconnects is presented. To realize fully-differential operation, a 3-dB power splitter and SiGe photodetector are integrated with the receiver, all in a CMOS 45nm SOI process. The proposed receiver improves sensitivity by suppressing common-mode and supply noise through fully-differential (FD) operation, achieving...
Silicon-photonics is an emerging technology that can overcome the tradeoffs faced by traditional electrical I/O. Due to ballooning development costs for advanced CMOS nodes, however, widespread adoption necessitates seamless photonics integration into mainstream processes, with as few process changes as possible. In this work, we demonstrate a silicon-photonic link with optical devices and electronics...
The first monolithic process flow integrating silicon photonics on operational bulk CMOS has been developed. Features include deep-trench isolation, polysilicon waveguides, grating couplers, filters, modulators, and detectors. Fully functional on-chip CMOS enables Tx/Rx operation while minimizing interconnect parasitics. With the addition of an external 1280nm source, a fully functional optical link...
By requiring zero process changes and by complying with established electronic circuit design rules, photonic devices formed with 3dB/cm waveguides were fabricated alongside transistors achieving 4ps stage delay in a 45nm thin-SOI CMOS foundry.
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