宜居世界观测站的光子集成电路：科学驱动、材料平台、阵列波导光谱仪与空间合格性路线图
Photonic Integrated Circuits for the Habitable Worlds Observatory: Science Drivers, Material Platforms, Arrayed-Waveguide Spectrographs, and a Space-Qualification Roadmap
- Leibniz Institute for Astrophysics Potsdam (AIP)（波茨坦莱布尼茨天体物理研究所）
机构由 AI 辅助整理，请以论文原文为准。
AI总结：
本文探讨光子集成电路如何满足宜居世界观测站（HWO）的科学需求，涵盖材料、阵列波导光谱仪及空间合格性，提出统一光子预算框架和分阶段路线图，将关键组件从TRL 2-5提升至TRL 6。
AI中文摘要：
NASA的宜居世界观测站（HWO）将需要同时具备紧凑、机械和热稳定性、高通量以及可大规模复制通道数的紫外、光学和近红外仪器。通过空间合格性验证的光子集成电路（PIC）和光纤是关键平台，能够提供这些特性：它们在微米级单模波导电路内以衍射极限操纵光。天文光子学仪器将星光从焦平面到探测器全程导引，消除散射和鬼像，并提供无移动部件的优异稳定性。本文通过四个主题探讨天文光子学如何应对HWO的主要科学驱动：（I）最适合用光子仪器实现的HWO观测模式；（II）能够覆盖HWO苛刻的100nm-2.5μm波长范围的波导和光纤材料；（III）阵列波导光栅（AWG）光谱仪达到HWO科学所需分辨率和通量的潜力；以及（IV）针对辐射、热循环、真空和发射载荷对PIC和光纤进行空间合格性验证所需步骤。针对每个主题，提取了具体技术要求，并评估了当前技术就绪水平（TRL）。本文的主要贡献在于将这些科学驱动、候选孔径光子预算、紫外到近红外材料平台、AWG架构和空间合格性要求统一在一个单一光子预算框架内，该框架将每项声称的收益与可测量的要求、TRL以及能够消除该风险的 environmental test 配对。一个分阶段路线图将关键光子组件从当前TRL 2至5（取决于平台和应用）推进到HWO仪器定义关口所需的TRL 6。
英文摘要：
NASA's Habitable Worlds Observatory (HWO) will require ultraviolet, optical, and near-infrared instruments that are simultaneously compact, mechanically and thermally stable, high-throughput, and replicable at large channel counts. Space-qualified photonic integrated circuits (PICs) and optical fibres are key platforms that can deliver these properties: they manipulate light at the diffraction limit within micron-scale single-mode waveguide circuits. An astrophotonic instrument fully guides the starlight from focal plane to detector, eliminating scatter and ghosts and offering excellent stability with no moving parts. This paper examines how astrophotonics can address the principal science drivers of HWO through four topics: (I) the HWO observing modes best implemented with photonic instruments; (II) the waveguide and fibre materials that can span the demanding 100nm-2.5μm HWO wavelength range; (III) the potential of arrayed-waveguide-grating (AWG) spectrographs to reach the resolving powers and throughputs HWO science requires; and (IV) the steps needed to space-qualify PICs and fibres against radiation, thermal cycling, vacuum, and launch loads. For each topic, concrete technical requirements are extracted and the current Technology Readiness Level (TRL) is assessed. The main contribution of this paper is to unify these science drivers, candidate-aperture photon budgets, UV-to-near-infrared material platforms, AWG architectures, and space-qualification requirements within a single photon-budget framework that pairs each claimed benefit with a measurable requirement, a TRL, and an environmental test that can retire it. A phased roadmap advances the critical photonic components from their present TRL~2 to -5, depending on platform and application, to the TRL~6 needed at HWO's instrument-definition gate.
