Two-pole microring weight banks

Optics Letters
Alexander N TaitPaul R Prucnal

Abstract

Weighted addition is an elemental multi-input to single-output operation that can be implemented with high-performance photonic devices. Microring (MRR) weight banks bring programmable weighted addition to silicon photonics. Prior work showed that their channel limits are affected by coherent inter-channel effects that occur uniquely in weight banks. We fabricate two-pole designs that exploit this inter-channel interference in a way that is robust to dynamic tuning and fabrication variation. Scaling analysis predicts a channel count improvement of 3.4-fold, which is substantially greater than predicted by incoherent analysis used in conventional MRR devices. Advances in weight bank design expand the potential of reconfigurable analog photonic networks and multivariate microwave photonics.

References

Nov 28, 2007·Optics Letters·A Melloni
Jul 13, 2011·Optics Express·Mattia MancinelliLorenzo Pavesi
May 15, 2013·Optics Express·Mark T Wade, Miloš A Popović
May 3, 2014·Optics Express·Jared C MikkelsenJoyce K S Poon
May 4, 2016·Optics Express·Alexander N TaitPaul R Prucnal
Nov 15, 2016·Optics Letters·Yang LiuBenjamin J Eggleton
Aug 9, 2017·Scientific Reports·Alexander N TaitPaul R Prucnal
Sep 25, 2017·Nature Communications·Daniel PérezJosé Capmany

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Citations

Mar 4, 2020·Optics Express·Philip Y MaPaul R Prucnal
Nov 25, 2018·Optics Express·Alexander N TaitPaul R Prucnal
Jun 30, 2019·Optics Express·Philip Y MaPaul R Prucnal

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