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Opt Express. 2011 Oct 10;19(21):20115-21. doi: 10.1364/OE.19.020115.

CMOS compatible reconfigurable filter for high bandwidth non-blocking operation.

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  • 1School of Electrical and Computer Engineering, Cornell University, Ithaca, N.Y. 14853, USA.


We design, fabricate and characterize a CMOS-compatible, Mach-Zehnder-coupled, second-order-microring-resonator filter with large Free Spectral Range and demonstrate non-blocking thermo-optical filter reconfiguration. The device consists of 10-μm radius silicon microring resonators, with an FSR equivalent to that of a structure consisting of 5-μm radii microrings. The structure is reconfigurable over an 8.5 nm range without blocking other channels in the network.

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