AI 中文总结
该研究设计了受光子 lantern 启发的天文光子学芯片，通过 ANSYS Lumerical FDTD 仿真优化其几何结构，获得了吞吐量与波长分辨能力提升的紧凑型光谱传感器，适用于天文光子学应用。
AI 中文摘要
紧凑型天文光子传感器可在小型集成 footprint 中，以通用光谱覆盖范围换取任务特定的波长分辨能力。本芯片由加州大学圣巴巴拉分校 Mazin 实验室开发，将单模输入耦合至多模干涉区域及七端口扇出，生成与波长相关的输出功率指纹用于光谱检索。采用 ANSYS Lumerical FDTD 仿真（基于氮化硅），对比对称与交错释放几何结构，量化了745nm设计点附近的吞吐量、七端口输出分布的波长相关变化及灵敏度；在测试的几何参数空间中优化后，得到吞吐量和波长分辨能力提升的设计，其吞吐量加权 Fisher 信息较基线更高。这些结果表明，受 lantern 启发的集成光子学可实现适用于天文光子学应用的紧凑型任务特定光谱传感器。
英文摘要
Compact astrophotonic sensors can trade general-purpose spectral coverage for task-specific wavelength discrimination in a small integrated footprint. Developed with the Mazin Lab at UC Santa Barbara, this chip couples a single-mode input into a multimode interference region and seven-port fanout, producing wavelength-dependent output power fingerprints for spectral retrieval. Using ANSYS Lumerical FDTD simulations in silicon nitride, we compare symmetric and staggered-release geometries and quantify throughput, wavelength-dependent changes in the seven-port output distribution, and sensitivity near a 745 nm design point. We optimize over the tested geometric parameter space and identify designs with improved throughput and wavelength discrimination, including increased throughput-weighted Fisher information relative to the baseline. These results suggest that lantern-inspired integrated photonics can enable compact, task-specific spectral sensors for astrophotonic applications.
Commentssubmitted to SPIE Astronomical Telescopes and Instrumentation 2026, paper number 14154-227
