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We have devised and fabricated high-speed silicon-on-insulator resonant microring photodiodes. The detectors comprise a p-i-n junction across a silicon rib waveguide microring resonator. Light absorption at 1550 nm is enhanced by implanting the diode intrinsic region with boron ions at 350 keV with a dosage of 1 × 1013cm−2. We have measured 3-dB bandwidths of 2.4 and 3.5 GHz at 5 and 15 V reverse bias, respectively, and observed an open-eye diagram at 5 gigabit/s with 5 V bias.
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Jason J. Ackert, Marco Fiorentino, Dylan F. Logan, Raymond Beausoleil, Paul E. Jessop, Andrew P. Knights, "Silicon-on-insulator microring resonator defect-based photodetector with 3.5-GHz bandwidth," J. Nanophoton. 5(1) 059507 (1 January 2011) https://doi.org/10.1117/1.3666059