Published November 12, 2018
| Published
Journal Article
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Multi-layer silicon nitride-on-silicon polarization-independent grating couplers
Abstract
A polarization-independent grating coupler is proposed and demonstrated in a 3-layer silicon nitride-on-silicon photonic platform. Polarization independent coupling was made possible by the supermodes and added degrees of geometric freedom unique to the 3-layer photonic platform. The grating was designed via optimization algorithms, and the simulated peak coupling efficiency was −2.1 dB with a 1 dB polarization dependent loss (PDL) bandwidth of 69 nm. The fabricated grating couplers had a peak coupling efficiency of −4.8 dB with 1 dB PDL bandwidth of over 100 nm.
Additional Information
© 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement. Received 14 Aug 2018; revised 29 Sep 2018; accepted 9 Oct 2018; published 7 Nov 2018. Funding: Natural Sciences and Engineering Research Council (NSERC); Huawei Technologies Canada.Attached Files
Published - oe-26-23-30623.pdf
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Additional details
- Eprint ID
- 91517
- Resolver ID
- CaltechAUTHORS:20181205-145145838
- Natural Sciences and Engineering Research Council of Canada
- Huawei Technologies Canada
- Created
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2018-12-05Created from EPrint's datestamp field
- Updated
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2021-11-16Created from EPrint's last_modified field
- Caltech groups
- Kavli Nanoscience Institute