Ultra-low-loss broadband multiport optical splitters
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A major challenge in inverse design of optical splitters is to efficiently reach platform nonspecific designs constrained to multiple functional requirements: arbitrary splitting ratio, low insertion loss, broad bandwidth and small footprint. While the traditional designs fail to fulfill all these requirements, the more successful nanophotonic inverse designs require substantial time and energy resources per device. Here, we present an efficient inverse design algorithm that provides universal designs of splitters compliant with all above constraints. To demonstrate the capabilities of our method, we design splitters with various splitting ratios and fabricate 1 × N power splitters in a borosilicate platform by direct laser writing. The splitters show zero loss within the experimental error, competitive imbalance of <0.5 dB and broad bandwidth in the range 20 − 60 nm around 640 nm. Remarkably, the splitters can be tuned to achieve different ...splitting ratios. We further demonstrate scaling of the splitter footprint and apply the universal design to silicon nitride and silicon-on-insulator platforms to achieve 1 × 5 splitters with the footprints as small as 3.3 µm × 8 µm and 2.5 µm × 10.3 µm, respectively. Owing to the universality and speed of the design algorithm (several minutes on a standard PC) our approach renders 100 greater throughput than nanophotonic inverse design.
Извор:
Optics Express, 2023, 31, 8, 12703-12716Финансирање / пројекти:
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200017 (Универзитет у Београду, Институт за нуклеарне науке Винча, Београд-Винча) (RS-MESTD-inst-2020-200017)
- Fondo Nacional de Desarrollo Científico y Tecnológico [1191205]
- Millennium Science Initiative Program [ICN17_012]
Институција/група
VinčaTY - JOUR AU - Vildoso, Paloma AU - Vicencio, Rodrigo A. AU - Petrović Jovana PY - 2023 UR - https://vinar.vin.bg.ac.rs/handle/123456789/10857 AB - A major challenge in inverse design of optical splitters is to efficiently reach platform nonspecific designs constrained to multiple functional requirements: arbitrary splitting ratio, low insertion loss, broad bandwidth and small footprint. While the traditional designs fail to fulfill all these requirements, the more successful nanophotonic inverse designs require substantial time and energy resources per device. Here, we present an efficient inverse design algorithm that provides universal designs of splitters compliant with all above constraints. To demonstrate the capabilities of our method, we design splitters with various splitting ratios and fabricate 1 × N power splitters in a borosilicate platform by direct laser writing. The splitters show zero loss within the experimental error, competitive imbalance of <0.5 dB and broad bandwidth in the range 20 − 60 nm around 640 nm. Remarkably, the splitters can be tuned to achieve different splitting ratios. We further demonstrate scaling of the splitter footprint and apply the universal design to silicon nitride and silicon-on-insulator platforms to achieve 1 × 5 splitters with the footprints as small as 3.3 µm × 8 µm and 2.5 µm × 10.3 µm, respectively. Owing to the universality and speed of the design algorithm (several minutes on a standard PC) our approach renders 100 greater throughput than nanophotonic inverse design. T2 - Optics Express T1 - Ultra-low-loss broadband multiport optical splitters VL - 31 IS - 8 SP - 12703 EP - 12716 DO - 10.1364/OE.486855 ER -
@article{ author = "Vildoso, Paloma and Vicencio, Rodrigo A. and Petrović Jovana", year = "2023", abstract = "A major challenge in inverse design of optical splitters is to efficiently reach platform nonspecific designs constrained to multiple functional requirements: arbitrary splitting ratio, low insertion loss, broad bandwidth and small footprint. While the traditional designs fail to fulfill all these requirements, the more successful nanophotonic inverse designs require substantial time and energy resources per device. Here, we present an efficient inverse design algorithm that provides universal designs of splitters compliant with all above constraints. To demonstrate the capabilities of our method, we design splitters with various splitting ratios and fabricate 1 × N power splitters in a borosilicate platform by direct laser writing. The splitters show zero loss within the experimental error, competitive imbalance of <0.5 dB and broad bandwidth in the range 20 − 60 nm around 640 nm. Remarkably, the splitters can be tuned to achieve different splitting ratios. We further demonstrate scaling of the splitter footprint and apply the universal design to silicon nitride and silicon-on-insulator platforms to achieve 1 × 5 splitters with the footprints as small as 3.3 µm × 8 µm and 2.5 µm × 10.3 µm, respectively. Owing to the universality and speed of the design algorithm (several minutes on a standard PC) our approach renders 100 greater throughput than nanophotonic inverse design.", journal = "Optics Express", title = "Ultra-low-loss broadband multiport optical splitters", volume = "31", number = "8", pages = "12703-12716", doi = "10.1364/OE.486855" }
Vildoso, P., Vicencio, R. A.,& Petrović Jovana. (2023). Ultra-low-loss broadband multiport optical splitters. in Optics Express, 31(8), 12703-12716. https://doi.org/10.1364/OE.486855
Vildoso P, Vicencio RA, Petrović Jovana. Ultra-low-loss broadband multiport optical splitters. in Optics Express. 2023;31(8):12703-12716. doi:10.1364/OE.486855 .
Vildoso, Paloma, Vicencio, Rodrigo A., Petrović Jovana, "Ultra-low-loss broadband multiport optical splitters" in Optics Express, 31, no. 8 (2023):12703-12716, https://doi.org/10.1364/OE.486855 . .