Inverse design of a dual-band wavelength demultiplexing power splitter based on two-step hybrid binary-analog optimization

Aolong Sun; Sizhe Xing; An Yan; Xuyu Deng; Zhongya Li; Guoqiang Li; Penghao Luo; Nan Chi; Junwen Zhang

doi:10.1117/12.3003635

21 December 2023 Inverse design of a dual-band wavelength demultiplexing power splitter based on two-step hybrid binary-analog optimization

Aolong Sun, Sizhe Xing, An Yan, Xuyu Deng, Zhongya Li, Guoqiang Li, Penghao Luo, Nan Chi, Junwen Zhang

Author Affiliations +

Proceedings Volume 12966, AOPC 2023: AI in Optics and Photonics ; 1296605 (2023) https://doi.org/10.1117/12.3003635
Event: Applied Optics and Photonics China 2023 (AOPC2023), 2023, Beijing, China

Abstract

We demonstrated the inverse design of a multifunctional silicon photonic device named wavelength demultiplexing power splitter (WDPS) which can realize dual-band (1310/1550 nm) demultiplexing and 1:1 power splitting simultaneously. We proposed a novel two-step hybrid binary-analog optimization (TH-BAO) method that combines two distinct optimization techniques: direct binary search (DBS) for binary pixel-state optimization and particle swarm optimization (PSO) for analog pixel-position optimization. Compared with the traditional DBS method, the TH-BAO method achieves comparable optimization performance with a reduction of the total simulation runs by 29.2%. The inverse-designed WDPS achieves insertion losses of 0.76 dB and 1.19 dB, as well as channel crosstalks of -17.96 dB and -11.20 dB at 1310 nm and 1550 nm, respectively. Furthermore, the dual-band functionality of our device can efficiently support the development of next-generation passive optical networks.

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

Citation Download Citation

Aolong Sun, Sizhe Xing, An Yan, Xuyu Deng, Zhongya Li, Guoqiang Li, Penghao Luo, Nan Chi, and Junwen Zhang "Inverse design of a dual-band wavelength demultiplexing power splitter based on two-step hybrid binary-analog optimization", Proc. SPIE 12966, AOPC 2023: AI in Optics and Photonics , 1296605 (21 December 2023); https://doi.org/10.1117/12.3003635

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