AI Article Synopsis
- Weighted addition is a key process in photonic devices, allowing multiple inputs to be combined into one output efficiently.
- Researchers have created two-pole microring weight banks that take advantage of unique inter-channel interference to enhance performance and adaptability.
- Their design forecasting suggests a significant increase in channel capacity (3.4 times more) compared to traditional methods, broadening the applications of reconfigurable analog photonic networks.
Article 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.
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| http://dx.doi.org/10.1364/OL.43.002276 | DOI Listing |
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