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Opt Express. 2010 Oct 25;18(22):23079-87. doi: 10.1364/OE.18.023079.

High bandwidth on-chip silicon photonic interleaver.

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  • 1School of Electrical and Computer Engineering, Cornell University, Ithaca, New York 14853, USA.


We demonstrate a 120 GHz 3-dB bandwidth on-chip silicon photonic interleaver with a flat passband over a broad spectral range of 70 nm. The structure of the interleaver is based on an asymmetric Mach-Zehnder interferometer (MZI) with 3 ring resonators coupled to the arms of the MZI. The transmission spectra of this device depict a rapid roll-off on the band edges, where the 20-dB bandwidth is measured to be 142 GHz. This device is optimized for operation in the C-band with a channel crosstalk as low as -20 dB. The device also has full reconfiguration capability to compensate for fabrication imperfections.

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