Design of Si3N4 microring array for optical pulse differentiation at multiple orders

Yijian Zhang; Chao Mei

doi:10.1117/12.2692944

24 November 2023 Design of Si₃N₄ microring array for optical pulse differentiation at multiple orders

Yijian Zhang, Chao Mei

Proceedings Volume 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023); 1293508 (2023) https://doi.org/10.1117/12.2692944
Event: Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 2023, Xi’an, China

Abstract

Si₃N₄ microring (MR) stands out as a promising platform in the integrated photonics for optical filter, optical delay lines, generation of Kerr frequency comb and optical computing. In this work, we study the optical temporal differentiation in a designed Si₃N₄ MR array. In order to avoid the limitations of a single MR, which can not reproduce the third peak at the trailing edge when differentiation order is between 1 and 2, a MR array consisting of two add-drop MRs and one all-pass MR is designed. Simulation results show that by reusing the drop port of add-drop MRs, differential orders between 0 to 2 can be obtained from different output ports. Furthermore, we propose an optimization algorithm to select the parameters of MRs. As a result, the differentiation deviations for 4-ps input Gaussian pulse can be minimized when the interior-point method is employed. Calculation results show that the differentiation deviations for orders between 1 and 2 are reduced to around 10%, and for orders between 0 to 1 are reduced to within 33%.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Yijian Zhang and Chao Mei "Design of Si₃N₄ microring array for optical pulse differentiation at multiple orders", Proc. SPIE 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 1293508 (24 November 2023); https://doi.org/10.1117/12.2692944

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