Reconfigurable Silicon Photonic Processor Based on SCOW Resonant Structures

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Abstract

Reconfigurable photonic processors, which can be programmed to perform multiple photonic processing tasks by using the same hardware platform, own the advantages of higher flexibility and more cost-effectiveness compared with application-specific photonic integration circuits (ASPICs). In this paper, we present a novel programmable photonic processor based on two-dimensional meshes of self-coupled optical waveguide (SCOW) resonant structures. The proposed processor can be configured for realizing various basic optical components, as well as cascaded and coupled components. As a proof-of-principle, we experimentally demonstrate the concept with a 3 × 1 SCOW-based processor on the silicon platform, including tunable couplers, variable optical attenuators, and phase shifters. We implement eight different configurations using the chip, including ring resonators, Mach-Zehnder interferometers, Fabry-Perot resonators, and composite structures built of these basic components. These results demonstrate that the proposed processor can be a promising candidate for multi-functional photonic processors.

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Lu, L., Shen, L., Gao, W., Zhou, L., & Chen, J. (2019). Reconfigurable Silicon Photonic Processor Based on SCOW Resonant Structures. IEEE Photonics Journal, 11(6). https://doi.org/10.1109/JPHOT.2019.2949268

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