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We theoretically and experimentally investigated the performance of silicon-on-insulator (SOI) microring add-drop filters in the limit of extreme miniaturization for potential application in very dense integration of silicon photonic devices. Rigorous numerical analyses were performed to predict the theoretical limit of achievable intrinsic quality factors as the microring radius is scaled down to...
We design a silicon MMI crossing laterally coupled microring resonator-based cross-connect filter. Numerical simulations suggest our design exhibits reduced insertion loss, reduced crosstalk, and more symmetric Lorentzian lineshapes as compared with the conventional plain-crossing-microring design.
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