A Compact, 4-Channel CWDM Demultiplexer Optimized Using Energy Constrained Inverse Design
A four-channel coarse wavelength division multiplexing (CWDM) (de)multiplexer with 50 nm channel spacing and <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$10\mu\mathrm{m}\times 10\mu\mathrm{m}$</tex> footprint is designed with an energy constrained inverse design method, providing low loss, crosstalk. Specifically, the optimized design has a <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$< 0.8$</tex> IL, <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$<-14\text{dB}$</tex> crosstalk. The optimization takes approximately 40 hours with a multi-GPU Maxwell equation solver. The optimized design validates the benefits of the proposed topological inverse design with energy constraint for more complex devices.
Authors
- Xiaojian Hong (ORCID: https://orcid.org/0000-0002-0789-8453)
- Jingshu Guo (ORCID: https://orcid.org/0000-0003-3623-6990)
- Chao Fei (ORCID: https://orcid.org/0000-0002-8654-7984)
- Guowu Zhang (ORCID: https://orcid.org/0000-0001-5166-7380)
- Liu Liu (ORCID: https://orcid.org/0000-0002-3651-544X)
- Daoxin Dai
Institutions
- Zhejiang University (CN)
Publication Details
- Published
- 2024-11-02
- DOI
- https://doi.org/10.1109/acp/ipoc63121.2024.10809663
- Primary Topic
- Photonic and Optical Devices
- Type
- article
- Field-Weighted Citation Impact
- 0.00