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arXiv · 1308.2846

Si3N4 ring resonator-based microwave photonic notch filter with an ultrahigh peak rejection

David Marpaung·Blair Morrison·Ravi Pant·Chris Roeloffzen·Arne Leinse·Marcel Hoekman·Rene Heideman·Benjamin J. Eggleton
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Abstract

We report a simple technique in microwave photonic (MWP) signal processing that allows the use of an optical filter with a shallow notch to exhibit a microwave notch filter with anomalously high rejection level. We implement this technique using a low-loss, tunable Si3N4 optical ring resonator as the optical filter, and achieved an MWP notch filter with an ultra-high peak rejection > 60 dB, a tunable high resolution bandwidth of 247-840 MHz, and notch frequency tuning of 2-8 GHz. To our knowledge, this is a record combined peak rejection and resolution for an integrated MWP filter.

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David Marpaung, Blair Morrison, Ravi Pant, Chris Roeloffzen, Arne Leinse, Marcel Hoekman, Rene Heideman, Benjamin J. Eggleton. 2013-08-13. Si3N4 ring resonator-based microwave photonic notch filter with an ultrahigh peak rejection. https://doi.org/10.1364/oe.21.023286

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