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- W2300988249 abstract "Interconnect architectures based on high-Q silicon photonic microring resonator devices offer a promising solution toaddress the dramatic increase in datacenter I/O bandwidth demands due to their ability to realize wavelength-divisionmultiplexing (WDM) in a compact and energy efficient manner. However, challenges exist in realizing efficientreceivers for these systems due to varying per-channel link budgets, sensitivity requirements, and ring resonancewavelength shifts. This paper reports on adaptive optical receiver design techniques which address these issues and havebeen demonstrated in two hybrid-integrated prototypes based on microring drop filters and waveguide photodetectorsimplemented in a 130nm SOI process and high-speed optical front-ends designed in 65nm CMOS. A 10Gb/s powerscalablearchitecture employs supply voltage scaling of a three inverter-stage transimpedance amplifier (TIA) that isadapted with an eye-monitor control loop to yield the necessary sensitivity for a given channel. As reduction of TIAinput-referred noise is more critical at higher data rates, a 25Gb/s design utilizes a large input-stage feedback resistorTIA cascaded with a continuous-time linear equalizer (CTLE) that compensates for the increased input pole. Whentested with a waveguide Ge PD with 0.45A/W responsivity, this topology achieves 25Gb/s operation with -8.2dBmsensitivity at a BER=10-12. In order to address microring drop filters sensitivity to fabrication tolerances and thermalvariations, efficient wavelength-stabilization control loops are necessary. A peak-power-based monitoring loop whichlocks the drop filter to the input wavelength, while achieving compatibility with the high-speed TIA offset-correctionfeedback loop is implemented with a 0.7nm tuning range at 43μW/GHz efficiency." @default.
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- W2300988249 date "2016-03-07" @default.
- W2300988249 modified "2023-09-25" @default.
- W2300988249 title "Adaptive gain, equalization, and wavelength stabilization techniques for silicon photonic microring resonator-based optical receivers" @default.
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- W2300988249 doi "https://doi.org/10.1117/12.2214888" @default.
- W2300988249 hasPublicationYear "2016" @default.
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