Inverse design of the multimode Bragg grating based on time-domain layer peeling method

Xiaofei Wang; Hui Yu; Nannan Ning; Qikai Huang; Yuehai Wang Sr.; Xiaoqing Jiang; Jianyi Yang

doi:10.1117/12.2644810

23 January 2023 Inverse design of the multimode Bragg grating based on time-domain layer peeling method

Xiaofei Wang, Hui Yu, Nannan Ning, Qikai Huang, Yuehai Wang Sr., Xiaoqing Jiang, Jianyi Yang

Proceedings Volume 12556, AOPC 2022: Optoelectronics and Nanophotonics; 125560F (2023) https://doi.org/10.1117/12.2644810
Event: Applied Optics and Photonics China 2022 (AOPC2022), 2022, Beijing, China

Abstract

Multimode waveguide Bragg gratings filters with square shape amplitude responses and well-controlled dispersion characteristics are achieved by the Time-Domain Layer Peeling method for the first time, the Bragg grating structures can be mapped by the complementary lateral-misalignment modulation apodization. Three filters with different amplitude and phase responses are demonstrated. For the dispersion-less filter, the dispersion compensation filter and the three-channel dispersionless filter, the 3 dB bandwidth and the group delay of the realizable spectral responses are 4.0 nm, 4.7 nm, 2.1 nm and 0 ps/nm, 5.7 ps/nm, 0 ps/nm, the group delay ripples have a standard deviation of 1.7 ps, 1.5 ps, and 2.0 ps. The multimode relaxes the fabrication requirement in terms of both the lithography resolution and minimum feature size/spacing while maintaining the advantages of low insertion loss.

Citation Download Citation

Xiaofei Wang, Hui Yu, Nannan Ning, Qikai Huang, Yuehai Wang Sr., Xiaoqing Jiang, and Jianyi Yang "Inverse design of the multimode Bragg grating based on time-domain layer peeling method", Proc. SPIE 12556, AOPC 2022: Optoelectronics and Nanophotonics, 125560F (23 January 2023); https://doi.org/10.1117/12.2644810

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