Low-loss broadband multiport optical splitters

Paloma Vildoso; Rodrigo A. Vicencio; Jovana Petrovic

doi:10.1117/12.2677821

4 October 2023 Low-loss broadband multiport optical splitters

Paloma Vildoso, Rodrigo A. Vicencio, Jovana Petrovic

Proceedings Volume 12673, Optics and Photonics for Information Processing XVII; 126730K (2023) https://doi.org/10.1117/12.2677821
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States

Abstract

Efficiently achieving platform nonspecific designs with multiple functional requirements, such as arbitrary splitting ratio, low insertion losses, broad bandwidth, and small footprint, poses a significant challenge in the inverse design of optical Splitters. Traditional designs often fall short in meeting all the necessary criteria, while more successful nanophotonic inverse designs often demand substantial time and energy resources per device. Here, we present an efficient inverse design algorithm which provides universal designs of Splitters compliant with all the above constraints and offers significantly greater throughput compared to nanophotonic inverse design. To demonstrate the effectiveness of our method, we designed Splitters with various splitting ratios and fabricated 1×N power Splitters using direct laser writing in a borosilicate platform, which shows zero loss within marginal error, competitive imbalance of < 0.5 dB and a broad bandwidth range of 20 − 60 nm around 640 nm. Notably, our designs can be easily tuned to achieve different splitting ratios. Furthermore, we discussed the scalability of the Splitter footprint.

Conference Presentation

Citation Download Citation

Paloma Vildoso, Rodrigo A. Vicencio, and Jovana Petrovic "Low-loss broadband multiport optical splitters", Proc. SPIE 12673, Optics and Photonics for Information Processing XVII, 126730K (4 October 2023); https://doi.org/10.1117/12.2677821

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